CN205136789U - Core shaft sealing mechanism - Google Patents
Core shaft sealing mechanism Download PDFInfo
- Publication number
- CN205136789U CN205136789U CN201520816489.XU CN201520816489U CN205136789U CN 205136789 U CN205136789 U CN 205136789U CN 201520816489 U CN201520816489 U CN 201520816489U CN 205136789 U CN205136789 U CN 205136789U
- Authority
- CN
- China
- Prior art keywords
- fixture
- transition disc
- packing
- platen
- seal 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 Devices (AREA)
Abstract
Core shaft sealing mechanism, including fixture, commentaries on classics mobile core axle and pressure disk, pressure disk and bolted connection for the fixture, core shaft sealing mechanism further includes transition disc, transition disc's a side end cover is established in the vertical portion of pressure disk, and the opposite side inserts downwards to the fixture in to push the packing, wherein the side end that transition disc was keeping away from the fixture is provided with the flange to be provided with 2 springs on this flange, just symmetrically between flange and the fixture apart from more than or equal to the freedom of spring is high. The utility model discloses a structure setting of transition disc and spring for change the mobile core axle and in the long -time back of using, lead to the fact wearing and tearing when changeing the mobile core axle to the packing, still can impel transition disc further to compress tightly the packing downwards through the decurrent strength of spring on the pressure disk, play sealed effect.
Description
Technical field
The utility model relates to a kind of sealing configuration, particularly a kind of stem seal device.
Background technique
Industry valve often adopts stem seal, and as shown in Figure 1, rotation mandrel through fixture, and arranges packing and seals the stem seal device of prior art between fixture and rotation mandrel, and the packing shown in it carries out compressions setting by platen.But, valve when switch, rotation mandrel be upper under carry out back rotation, so if things go on like this can cause wearing and tearing to packing, thus sealing effect weakens, cause reveal medium situation occur.
Model utility content
The utility model object is to provide a kind of stem seal device solved the problems of the technologies described above.
For solving the problems of the technologies described above, the utility model provides a kind of stem seal device, comprises fixture, rotation mandrel and platen, and described rotation mandrel through fixture, and arranges packing between this rotation mandrel and fixture; Described platen is bolted on fixture, and extrudes to realize the sealing operation of this packing to rotation mandrel to packing; Described stem seal device comprises transition disc further, and the side end sleeve of described transition disc is located on the vertical portion of platen, and opposite side is inserted into downwards in fixture, to extrude packing; Wherein said transition disc is provided with flange at the side end away from fixture, and on this flange, be provided with 2 springs symmetrically, and the freedom that the distance between described flange and fixture is more than or equal to described spring is high.
As preferred version of the present utility model, described transition disc is provided with projection on the side end inserting fixture, and the outer of described projection reduces gradually away from the direction of transition disc without leave.
As preferred version of the present utility model, described projection and transition disc are set to integral structure.
As preferred version of the present utility model, described platen is threaded with fixture by the bolt being located at these platen horizontal part both sides.
As preferred version of the present utility model, described platen abuts with gap between transition disc and coordinates.
As preferred version of the present utility model, described transition disc abuts with gap between fixture and coordinates.
As preferred version of the present utility model, described rotation mandrel abuts with gap between platen and coordinates.
As preferred version of the present utility model, described rotation mandrel abuts with gap between transition disc and coordinates.
Due to the utilization of technique scheme, the utility model possesses following advantage:
Stem seal device of the present utility model, by the vibrational power flow of transition disc and spring, make rotation mandrel after a long time use, when rotation mandrel causes wearing and tearing to packing, still impel transition disc to compress packing downwards further by the strength that platen upper spring is downward, play the effect of sealing.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art SMIS shaft sealer.
The structural representation of the stem seal device that Fig. 2 provides for the utility model preferred embodiment.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 2, stem seal device provided by the utility model, comprise rotation mandrel 1, fixture 2, platen 3, packing 4, transition disc 5 and spring 6.Wherein packing 4 is arranged between rotation mandrel 1 and fixture 2, realizes the effect of sealing.
Described platen 3 is fixed on fixture 2 by bolt 9, and extrudes to packing 4 sealing operation realizing these packing 4 pairs of rotation mandrels 1.Be appreciated that described platen 3 comprises the horizontal part 7 be arranged in parallel relative to fixture 2, and be vertically arranged on the middle part of horizontal part 7, realize the vertical portion 8 of packing 4 being carried out to squeeze job.Wherein said platen 3 is that the bolt 9 by running through this platen 3 horizontal part 7 is fixed with fixture 2 and is connected, and the platen 3 of the present embodiment carries out being connected and fixed particular by the bolt 9 being located at these platen 3 horizontal part 7 both sides and fixture 2.
Described transition disc 5 is applied in this stem seal device, and one side end is set on the vertical portion 8 of platen 3, and opposite side is inserted in fixture 3 downwards, to extrude packing 4; Wherein said transition disc 5 is provided with flange 10 at the side end away from fixture 2, described spring 6 is specifically arranged on the flange 10 of described transition disc 5, and be provided with 2 symmetrically, the freedom that distance between described flange 10 and fixture 2 is more than or equal to described spring 6 is high, and this spring 6 can promote transition disc 4 and moves downward like this.The stem seal device of the present embodiment is when installation, transition disc 5 is inserted in fixture 2, is placed on packing 4, adopts Spielpassung, flange 10 on transition disc 5 is arranged on the top of fixture 2, with formed transition disc 5 relatively and fixture continue downward space.Spring 6 is arranged on the flange 10 of transition disc 5, and platen 3 is inserted in transition disc 5, is placed on transition disc 5, and adopt Spielpassung, spring 6 is butted on the horizontal part 7 of platen 3, and rotation mandrel 1 is successively from platen 3, and transition disc 5, deeply in fixture 2, adopts Spielpassung.
As preferred version of the present utility model, described transition disc 5 is provided with projection 11 on the side end inserting fixture 2, and the outer of described projection 11 reduces gradually away from the direction of transition disc 5 without leave.Be appreciated that the position acted on to packing 4 at transition disc 5 is set to sharp-pointed projection 11, which enhance the using effect of transition disc 5 extruding packing 4 downwards.Further, described projection 11 is set to integral structure with transition disc 5.
In use, twist the bolt 9 of platen 3 both sides downwards, platen 3 is to pressing down for the utility model, transition disc 5 is driven to compress packing 4 downwards, sharp projection 11 bottom transition disc 5 compresses into packing 4, makes packing 4 create power to both sides, serves the effect of seal clearance.Continue to tight a bolt 9 downwards, make the spring 6 on platen 3 be compressed to the shortest, stop.During long-time use, the frequent upper and lower activity of rotation mandrel 1, worn and torn packing 4, and packing 4 reduces, height reduction, transition disc 5 is driven also to go deep in fixture 2 further downwards, now, spring 6 is compressed gradually and to the downward power of transition disc 5 one, continues transition disc 5 to be pressed in packing 4 downwards, fill up the space that packing 4 produces after rotation mandrel 1 weares and teares, until the decrement of spring 6 becomes maximum stopping.
In sum, stem seal device of the present utility model, by the vibrational power flow of transition disc and spring, make rotation mandrel after a long time use, when rotation mandrel causes wearing and tearing to packing, still impel transition disc to compress packing downwards further by the strength that platen upper spring is downward, play the effect of sealing.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a stem seal device, comprises fixture, rotation mandrel and platen, and described rotation mandrel through fixture, and arranges packing between this rotation mandrel and fixture; Described platen is bolted on fixture, and extrudes to realize the sealing operation of this packing to rotation mandrel to packing; It is characterized in that: described stem seal device comprises transition disc further, the side end sleeve of described transition disc is located on the vertical portion of platen, and opposite side is inserted into downwards in fixture, to extrude packing; Wherein said transition disc is provided with flange at the side end away from fixture, and on this flange, be provided with 2 springs symmetrically, and the freedom that the distance between described flange and fixture is more than or equal to described spring is high.
2. stem seal device according to claim 1, is characterized in that: described transition disc is provided with projection on the side end inserting fixture, and the outer of described projection reduces gradually away from the direction of transition disc without leave.
3. stem seal device according to claim 2, is characterized in that: described projection and transition disc are set to integral structure.
4. stem seal device according to claim 1, is characterized in that: described platen is threaded with fixture by the bolt being located at these platen horizontal part both sides.
5. stem seal device according to claim 1, is characterized in that: described platen abuts with gap between transition disc and coordinates.
6. stem seal device according to claim 1, is characterized in that: described transition disc abuts with gap between fixture and coordinates.
7. stem seal device according to claim 1, is characterized in that: described rotation mandrel abuts with gap between platen and coordinates.
8. stem seal device according to claim 1, is characterized in that: described rotation mandrel abuts with gap between transition disc and coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520816489.XU CN205136789U (en) | 2015-10-21 | 2015-10-21 | Core shaft sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520816489.XU CN205136789U (en) | 2015-10-21 | 2015-10-21 | Core shaft sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136789U true CN205136789U (en) | 2016-04-06 |
Family
ID=55622583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520816489.XU Expired - Fee Related CN205136789U (en) | 2015-10-21 | 2015-10-21 | Core shaft sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204463A (en) * | 2016-12-20 | 2018-06-26 | 重庆乐迪机车车辆配件有限公司 | For the axle sealing structure of automobile |
-
2015
- 2015-10-21 CN CN201520816489.XU patent/CN205136789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204463A (en) * | 2016-12-20 | 2018-06-26 | 重庆乐迪机车车辆配件有限公司 | For the axle sealing structure of automobile |
| CN108204463B (en) * | 2016-12-20 | 2024-03-01 | 河南省优普密封科技有限公司 | Shaft sealing structure for automobile |
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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: 20160406 Termination date: 20161021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |