CN210949876U - Pressure-adjustable shaft seal - Google Patents
Pressure-adjustable shaft seal Download PDFInfo
- Publication number
- CN210949876U CN210949876U CN201921027432.6U CN201921027432U CN210949876U CN 210949876 U CN210949876 U CN 210949876U CN 201921027432 U CN201921027432 U CN 201921027432U CN 210949876 U CN210949876 U CN 210949876U
- Authority
- CN
- China
- Prior art keywords
- ring
- quiet
- push pedal
- annular push
- cover
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 28
- 230000003068 static effect Effects 0.000 claims description 14
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to a pressure-adjustable shaft seal, including rotating ring cover, rotating ring, quiet ring and quiet ring cover, the rotating ring embedding is moved the rotating ring intracavity of ring cover and is fixed with rotating ring cover through the mounting, and the quiet ring intracavity of quiet ring embedding quiet ring cover, just the rotating ring is inconsistent with quiet ring, still includes annular push pedal, pretension screw and thrust spring, and annular push pedal setting is sheathe in and is inconsistent with quiet ring deviating from the quiet ring of rotating ring one side, and the spacing hole and the quiet ring cover threaded connection of the mobile annular push pedal that passes of pretension screw, thrust spring suit between the nut of pretension screw and annular push pedal and give the push pedal thrust to the right. Through setting up the annular push pedal, make thrust spring not with quiet ring direct contact, and thrust spring directly exposes outside quiet ring cover, can direct observation thrust spring's in the use in the in service behavior, the maintenance and the maintenance in the later stage of being convenient for.
Description
Technical Field
The utility model relates to a mechanical seal technical field, concretely relates to adjustable pressure's bearing seal.
Background
The shaft seal is generally used to prevent fluid leakage between the shaft of the fluid transfer device and the bearing, and a sealing effect is achieved by interference fit between the lip of the shaft seal and the shaft of the device. The existing mechanical seal generally comprises a static ring, a static ring seat, a dynamic ring, a thrust spring, a spring seat, an auxiliary sealing sleeve and a gland. After the sealing end face runs for a long time, the sealing end face is inevitable to prevent some media from being separated out, and if the separated media are cleaned, the separated media can be accumulated on the thrust spring uniformly to cause the elastic force of the thrust spring to lose efficacy, particularly in the industries of petrochemical industry, thermal power generation, sewage treatment, garbage power generation and the like.
SUMMERY OF THE UTILITY MODEL
To the not enough in the background art, the utility model provides a pressure-adjustable shaft seal.
The utility model adopts the technical proposal that: the utility model provides a pressure-adjustable shaft seal, includes movable ring cover, movable ring, quiet ring sum quiet ring cover, the movable ring embedding movable ring cover the movable ring intracavity and fixed with movable ring cover through the mounting, quiet ring embedding quiet ring intracavity of quiet ring cover, just the movable ring is inconsistent with quiet ring, still includes annular push pedal, pretension screw and thrust spring, annular push pedal set up and is just inconsistent with quiet ring in the quiet ring cover that deviates from movable ring one side, pretension screw movably pass the spacing hole and the quiet ring cover threaded connection of annular push pedal, thrust spring suit is between the nut of pretension screw and annular push pedal and gives the push pedal thrust to the right.
Furthermore, rotating ring and quiet ring be hollow "protruding" shape cylinder, and the corner of rotating ring and quiet ring all is equipped with "O" type sealing washer, annular push pedal and quiet ring between be equipped with supplementary sealing washer.
Furthermore, the O-shaped sealing ring and the auxiliary sealing ring are both made of fluorine rubber or polytetrafluoroethylene.
Furthermore, the fixing piece is a pin or a pin shaft.
Furthermore, the movable ring sleeve is provided with a sinking groove for accommodating the annular push plate, an opening of the sinking groove is provided with a sealing cover, and the sealing cover is fixedly connected with the movable ring sleeve through a bolt.
Furthermore, the inner ring of the sealing cover is provided with an observation window made of transparent materials, and the sealing cover on the periphery of the observation window is made of stainless steel.
Furthermore, the number of the pre-tightening screws is at least three, and the pre-tightening screws are uniformly distributed on the outer ring of the annular push plate around the center of the annular push plate.
Furthermore, the movable ring and the static ring are both made of silicon carbide or tungsten carbide materials.
The utility model has the advantages that: the utility model discloses a set up the annular push pedal, make thrust spring not with quiet ring direct contact, and thrust spring directly exposes outside quiet ring cover, in the use can direct observation thrust spring's in service behavior, the maintenance and the maintenance in the later stage of being convenient for, in addition, can also adjust thrust spring's thrust through adjusting pretension screw to indirect conflict pressure of adjusting between quiet ring and the rotating ring, with the operating mode demand that adapts to the difference, improve the application range of bearing seal.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a movable ring sleeve; 2. a moving ring; 3. a stationary ring; 4. a static ring sleeve; 5. a fixing member; 6. a ring-shaped push plate; 7. pre-tightening the screw; 8. a thrust spring; 9. an O-shaped sealing ring; 10. an auxiliary seal ring; 11. sinking a groove; 12. sealing the cover; 13. a bolt; 14. and (4) an observation window.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a pressure-adjustable shaft seal.
In this embodiment, referring to fig. 1, the pressure-adjustable shaft seal includes a movable ring sleeve 1, a movable ring 2, a stationary ring 3, and a stationary ring sleeve 4, the movable ring 2 is embedded in a movable ring cavity of the movable ring sleeve 1 and fixed to the movable ring sleeve through a fixing member 5, the stationary ring 3 is embedded in a stationary ring cavity of the stationary ring sleeve 4, the movable ring 2 abuts against the stationary ring 3, the pressure-adjustable shaft seal further includes an annular push plate 6, a pre-tightening screw 7, and a thrust spring 8, the annular push plate 6 is disposed on the stationary ring sleeve 4 on a side away from the movable ring and abuts against the stationary ring 3, the pre-tightening screw 7 movably penetrates through a limiting hole of the annular push plate 6 to be in threaded connection with the stationary ring sleeve, and the thrust spring 8 is sleeved between a nut of the pre-tightening screw and the annular push plate and applies a thrust to the push.
The rotating ring 2 and the static ring 3 are both hollow convex cylinders, the corners of the rotating ring and the static ring are both provided with O-shaped sealing rings 9, and an auxiliary sealing ring 10 is arranged between the annular push plate and the static ring. The outer surfaces of the movable ring and the static ring naturally form a corner, and an O-shaped sealing ring is arranged at the corner, so that the sealing performance is improved.
The O-shaped sealing ring and the auxiliary sealing ring are both made of fluorine rubber or polytetrafluoroethylene. The fluorine rubber or the polytetrafluoroethylene has stable chemical properties, good gasoline resistance, oil resistance, acid and alkali resistance, high mechanical strength and good wear resistance, thereby prolonging the service life of the mechanical seal.
The fixing piece is a pin or a pin shaft; the movable ring sleeve is provided with a sinking groove 11 for accommodating the annular push plate, an opening of the sinking groove 11 is provided with a sealing cover 12, and the sealing cover 12 is fixedly connected with the movable ring sleeve 1 through a bolt 13; the inner ring of the sealing cover 12 is provided with an observation window 14 made of transparent material, and the sealing cover on the periphery of the observation window 14 is made of stainless steel. The movable ring is sheathe in and is set up heavy groove for hold annular push pedal and the pretension screw and the thrust spring be connected with annular push pedal, and cover with transparent closing cap, the closing cap can reduce the entering of impurity, simultaneously, is convenient for observe, makes things convenient for the maintenance and the maintenance in later stage. Wherein the transparent material can be glass, transparent plastic and the like.
The number of the pre-tightening screws is at least three, and the pre-tightening screws are uniformly distributed on the outer ring of the annular push plate around the center of the annular push plate; the movable ring and the static ring are both made of silicon carbide or tungsten carbide materials. The dynamic ring and the static ring made of silicon carbide or tungsten carbide have better wear resistance and improve the service life of mechanical seal.
The utility model discloses a set up the annular push pedal, make thrust spring not with quiet ring direct contact, and thrust spring directly exposes outside quiet ring cover, in the use can direct observation thrust spring's in service behavior, the maintenance and the maintenance in the later stage of being convenient for, in addition, can also adjust thrust spring's thrust through adjusting pretension screw to indirect conflict pressure of adjusting between quiet ring and the rotating ring, with the operating mode demand that adapts to the difference, improve the application range of bearing seal.
The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.
Claims (6)
1. The utility model provides a pressure-adjustable shaft seal, includes rotating ring cover, rotating ring, quiet ring sum quiet ring cover, the rotating ring embedding rotating ring cover the rotating ring intracavity and fixed with rotating ring cover through the mounting, quiet ring embedding quiet ring intracavity of quiet ring cover, just the rotating ring is inconsistent with quiet ring, its characterized in that: still include annular push pedal, pretension screw and thrust spring, the annular push pedal sets up and sheathes in and inconsistent with quiet ring deviating from quiet ring of rotating ring one side, the spacing hole and the quiet ring cover threaded connection of the mobile annular push pedal that passes of pretension screw, thrust spring suit is between nut and the annular push pedal of pretension screw and gives the push pedal thrust right, the rotating ring cover on be equipped with the heavy groove that is used for holding the annular push pedal, be equipped with the closing cap on the opening in heavy groove, the closing cap passes through the bolt and links firmly with the rotating ring cover, the closing cap inner circle be equipped with the observation window of being made by transparent material, the closing cap of observation window periphery is made by the stainless steel.
2. The adjustable pressure shaft seal of claim 1 wherein: the movable ring and the static ring are both hollow convex cylinders, O-shaped sealing rings are arranged at the corners of the movable ring and the static ring, and auxiliary sealing rings are arranged between the annular push plate and the static ring.
3. The adjustable pressure shaft seal of claim 2 wherein: the O-shaped sealing ring and the auxiliary sealing ring are both made of fluorine rubber or polytetrafluoroethylene.
4. The adjustable pressure shaft seal of claim 1 wherein: the fixing piece is a pin or a pin shaft.
5. The adjustable pressure shaft seal of claim 1 wherein: the number of the pre-tightening screws is at least three, and the pre-tightening screws are uniformly distributed on the outer ring of the annular push plate around the center of the annular push plate.
6. The adjustable pressure shaft seal of claim 1 wherein: the movable ring and the static ring are both made of silicon carbide or tungsten carbide materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027432.6U CN210949876U (en) | 2019-07-03 | 2019-07-03 | Pressure-adjustable shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027432.6U CN210949876U (en) | 2019-07-03 | 2019-07-03 | Pressure-adjustable shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949876U true CN210949876U (en) | 2020-07-07 |
Family
ID=71381609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921027432.6U Expired - Fee Related CN210949876U (en) | 2019-07-03 | 2019-07-03 | Pressure-adjustable shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949876U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943933A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability low-torque zero-leakage steam turbine shaft end sealing device |
| CN112943932A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability zero-leakage steam turbine shaft end sealing method |
-
2019
- 2019-07-03 CN CN201921027432.6U patent/CN210949876U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943933A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability low-torque zero-leakage steam turbine shaft end sealing device |
| CN112943932A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability zero-leakage steam turbine shaft end sealing method |
| CN112943933B (en) * | 2021-02-04 | 2024-01-12 | 宁波维希密封工业有限公司 | High-reliability low-torque zero-leakage steam turbine shaft end sealing device |
| CN112943932B (en) * | 2021-02-04 | 2024-01-19 | 灿因工业技术(宁波)有限公司 | High-reliability zero-leakage steam turbine shaft end sealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 |