CN201588934U - No-leakage mechanical seal device used for rotating shaft - Google Patents
No-leakage mechanical seal device used for rotating shaft Download PDFInfo
- Publication number
- CN201588934U CN201588934U CN2009202141314U CN200920214131U CN201588934U CN 201588934 U CN201588934 U CN 201588934U CN 2009202141314 U CN2009202141314 U CN 2009202141314U CN 200920214131 U CN200920214131 U CN 200920214131U CN 201588934 U CN201588934 U CN 201588934U
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- CN
- China
- Prior art keywords
- hoop
- rotary sleeve
- spacer ferrule
- sealing cover
- angle
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- 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 - Lifetime
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to the field of sealing devices for conveying pipelines for fluid mediums, in particular to a no-leakage mechanical seal device used for a rotating shaft. The no-leakage mechanical seal device used for the rotating shaft comprises a stationary ring component 11, a rotating ring component 12, a cover body 13 and a positioning hoop 5; the no-leakage mechanical seal device is characterized in that the device also comprises a blocking hoop 1, a sealing housing 2, a bolt 3 and a seal ring 4; the blocking hoop 1 is sleeved on a flange neck of the positioning hoop 5 and is also fixedly connected with a flange chassis of the positioning hoop 5; the sealing housing 2 is sleeved out of the blocking hoop 1 and is also fixedly connected with a cover body 13; hook-shaped reverse-guiding corners 21 are respectively formed on the outer side of the blocking hoop 1 and the inner side of the sealing housing 2; and the seal ring 4 is embedded in a gap between the positioning hoop 5 and the blocking hoop 1. The no-leakage mechanical seal device can effectively control the pollution caused by dielectric leakage, improves the environmental protection level, and has wide application.
Description
Technical field
The utility model relates to flowing medium delivery line seal arrangement field, is specially a kind of no-leakage mechanical sealing device that is used for rotating shaft.
Background technique
At present, be used for mechanical seal of a great variety of rotating shaft, model is different, all is made of static components and moving ring assembly usually.Static components is made up of stationary ring, stationary seat, bellows and corrugated header, is fixed on mechanically to be fixed with metal bellows; Moving ring assembly is made up of rotating ring and rotating seat, is fixed on the rotary sleeve.Sliding contact between rotating ring and the stationary ring.But, through after a while use,, will inevitably occur leaking and manifest along with the wearing and tearing of seal point, main leakage point can be summarized as follows: the leakage point between a. rotating ring and stationary ring; B. the leakage point of moving ring assembly and shaft room; C. the leakage point of axle sleeve and running shaft cooperation place; D. the leakage point between static components and the lid.As shown in Figure 1, fixedly connected in the flange-like termination of moving ring assembly 12 and rotary sleeve 10, moving ring assembly 12 and static components 11 are slidingly connected, and lid 13 is enclosed within the middle part of rotary sleeve 10 and also and between the rotary sleeve 10 leaves the gap, and lid 13 just is fixed on mechanically usually.Behind the mechanical seal leakage, medium just flow to behind the can earial drainage everywhere along rotary component, causes the seriously polluted of equipment and environment.
Summary of the invention
In order to overcome the defective of prior art, a kind of good seal performance, shaft sealing device that dielectric leakage is few are provided, the utility model discloses a kind of no-leakage mechanical sealing device that is used for rotating shaft.
The utility model reaches goal of the invention by following technical solution:
A kind of no-leakage mechanical sealing device that is used for rotating shaft, comprise static components, moving ring assembly, lid and spacer ferrule, fixedly connected in the flange-like termination of moving ring assembly and rotary sleeve, rotational slide is connected moving ring assembly with static components, spacer ferrule is a flange, the through hole of spacer ferrule by the center be enclosed within rotary sleeve cylindrical side an end and and rotary sleeve fix, the through hole at spacer ferrule center and rotary sleeve form interference fit so that the neck flange locking rotary sleeve of spacer ferrule, lid is enclosed within the middle part of rotary sleeve and also and between the rotary sleeve leaves the gap, it is characterized in that: also comprise resistance envelope hoop, sealing cover, screw and seal ring, the resistance envelope is bound round on the neck flange that is enclosed within spacer ferrule and by the flange chassis of screw and spacer ferrule and is fixedlyed connected, form interference fit between the through hole of resistance envelope hoop and the neck flange of spacer ferrule, sealing cover is enclosed within the outside and the sealing cover that hinder the envelope hoop and fixedlys connected with lid, on the outside of resistance envelope hoop a cross section of stretching to sealing cover being arranged is hook-shaped anti-angle of deflection, it is hook-shaped anti-angle of deflection that there is a cross section of stretching to resistance envelope hoop the inboard of sealing cover, the anti-angle of deflection of resistance envelope hoop and the anti-angle of deflection of sealing cover are hook-shaped relative and stagger mutually, constituting the cross section is the path of meander line, and the gap between spacer ferrule and the resistance envelope hoop is embedded in seal ring.
The described no-leakage mechanical sealing device that is used for rotating shaft is characterized in that: the cross section is hook-shaped anti-angle of deflection, and its sectional shape is the groove shaped of an opening, and the both sides of groove and the angle on base are between 60 °～90 °.
When the utility model uses, the resistance envelope is bound round by the leakage point of positioning and fixing at rotary sleeve, as between rotating ring and the stationary ring, between rotating ring and the axle sleeve, between axle sleeve and the axle and between stationary ring and the stationary seat, form tortuous labyrinth between the reverse lead angle of resistance envelope hoop and the reverse lead angle of sealing cover, outside rotary sleeve, the resistance envelope space that hoop, sealing cover and lid enclosed forms collection and leaks box.If the medium of mechanical seal take place to leak and along after the rotary component earial drainage is to rotary sleeve, the resistance envelope hoop that together rotates with rotary sleeve can form pressure reduction in sealing cover, the medium that leaks is leaked in the box along labyrinth " wind drift " to collection, because the tortuosity in labyrinth, the medium that leaks can effectively be sealed, and leaks thereby reach not have.
The beneficial effects of the utility model are: guarantee that mechanical seal is after the leakage that takes place to a certain degree, still effectively control media leaks the pollution that causes, significantly reduce medium and revealed the environmental pollution that causes, improved Environmental Protection Level, the utility model is widely used, can be used for nuclear power, chemical industry, thermal power generation field, and can progressively be generalized to the every field of seal request.
Description of drawings
Fig. 1 is the schematic cross-section of existing machinery sealing;
Fig. 2 is a schematic cross-section of the present utility model.
Embodiment
Below further specify the utility model by specific embodiment.
Embodiment 1
A kind of no-leakage mechanical sealing device that is used for rotating shaft, comprise resistance envelope hoop 1, sealing cover 2, screw 3, seal ring 4, spacer ferrule 5, static components 11, moving ring assembly 12 and lid 13, as shown in Figure 2, concrete structure is: fixedly connected in the flange-like termination of moving ring assembly 12 and rotary sleeve 10,11 rotational slides are connected moving ring assembly 12 with static components, spacer ferrule 5 is a flange, the through hole of spacer ferrule 5 by the center be enclosed within rotary sleeve 10 cylindrical sides an end and and rotary sleeve 10 fix, the through hole at spacer ferrule 5 centers and rotary sleeve 10 form interference fit so that the neck flange locking rotary sleeve 10 of spacer ferrule 5, lid 13 is enclosed within the middle part of rotary sleeve 10 and also and between the rotary sleeve 10 leaves the gap, and lid 13 just is fixed on mechanically usually.Resistance envelope hoop 1 is enclosed within on the neck flange of spacer ferrule 5 and by the flange chassis of screw 3 and spacer ferrule 5 fixedlys connected, form interference fit between the through hole of resistance envelope hoop 1 and the neck flange of spacer ferrule 5, sealing cover 2 is enclosed within the outside and the sealing cover 2 that hinder envelope hoop 1 and fixedlys connected with lid 13, on the outside of resistance envelope hoop 1 cross section of stretching to sealing cover 2 being arranged is hook-shaped anti-angle of deflection 21, it is hook-shaped anti-angle of deflection 21 that there is a cross section of stretching to resistance envelope hoop 1 inboard of sealing cover 2, the sectional shape of anti-angle of deflection 21 is the groove shaped of an opening, the both sides of groove and the angle on base can be between 60 °～90 °, present embodiment is got 90 °, the anti-angle of deflection 21 of resistance envelope hoop 1 and the anti-angle of deflection of sealing cover 2 21 are hook-shaped relative and stagger mutually, constituting the cross section is the path of meander line, and the gap between spacer ferrule 5 and the resistance envelope hoop 1 is embedded in seal ring 4.
When present embodiment uses, the resistance envelope is bound round 1 by the leakage point of positioning and fixing at rotary sleeve 10, as between rotating ring and the stationary ring, between rotating ring and the axle sleeve, between axle sleeve and the axle and between stationary ring and the stationary seat, if the medium of mechanical seal takes place to leak mostly by earial drainage outside these joints are after the rotation of rotary sleeve.Form tortuous labyrinth between the reverse lead angle 21 of resistance envelope hoop 1 and the reverse lead angle 21 of sealing cover 2, outside rotary sleeve 10, the space that resistance envelope hoop 1, sealing cover 2 and lid 13 are enclosed forms collection and leaks box.If the medium of mechanical seal take place to leak and along after the rotary component earial drainage is to rotary sleeve, the resistance envelope hoop 1 that together rotates with rotary sleeve 10 can form pressure reduction in sealing cover 2, the medium that leaks is leaked in the box along labyrinth " wind drift " to collection, because the tortuosity in labyrinth, the medium that leaks can effectively be sealed, thereby reaches leak free effect.
Claims (2)
1. no-leakage mechanical sealing device that is used for rotating shaft, comprise static components (11), moving ring assembly (12), lid (13) and spacer ferrule (5), moving ring assembly (12) is fixedlyed connected with the flange-like termination of rotary sleeve (10), rotational slide is connected moving ring assembly (12) with static components (11), spacer ferrule (5) is a flange, the through hole of spacer ferrule (5) by the center be enclosed within rotary sleeve (10) cylindrical side an end and and rotary sleeve (10) fix, the through hole at spacer ferrule (5) center and rotary sleeve (10) form interference fit, lid (13) is enclosed within the middle part of rotary sleeve (10) and also and between the rotary sleeve (10) leaves the gap, it is characterized in that: also comprise resistance envelope hoop (1), sealing cover (2), screw (3) and seal ring (4), resistance envelope hoop (1) is enclosed within on the neck flange of spacer ferrule (5) and by screw (3) fixedlys connected with the flange chassis of spacer ferrule (5), form interference fit between the through hole of resistance envelope hoop (1) and the neck flange of spacer ferrule (5), sealing cover (2) is enclosed within the outside and the sealing cover (2) that hinder envelope hoop (1) and fixedlys connected with lid (13), on the outside of resistance envelope hoop (1) cross section of stretching to sealing cover (2) being arranged is hook-shaped anti-angle of deflection (21), it is hook-shaped anti-angle of deflection (21) that there is a cross section of stretching to resistance envelope hoop (1) inboard of sealing cover (2), the anti-angle of deflection (21) of resistance envelope hoop (1) and the anti-angle of deflection (21) of sealing cover (2) are hook-shaped relative and stagger mutually, constituting the cross section is the path of meander line, and the gap between spacer ferrule (5) and the resistance envelope hoop (1) is embedded in seal ring (4).
2. the no-leakage mechanical sealing device that is used for rotating shaft as claimed in claim 1 is characterized in that: the cross section is hook-shaped anti-angle of deflection (21), and its sectional shape is the groove shaped of an opening, and the both sides of groove and the angle on base are between 60 °～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202141314U CN201588934U (en) | 2009-11-24 | 2009-11-24 | No-leakage mechanical seal device used for rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202141314U CN201588934U (en) | 2009-11-24 | 2009-11-24 | No-leakage mechanical seal device used for rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588934U true CN201588934U (en) | 2010-09-22 |
Family
ID=42748714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202141314U Expired - Lifetime CN201588934U (en) | 2009-11-24 | 2009-11-24 | No-leakage mechanical seal device used for rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588934U (en) |
-
2009
- 2009-11-24 CN CN2009202141314U patent/CN201588934U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |