CN204921989U - Carborundum mechanical seal device for vacuum pump - Google Patents
Carborundum mechanical seal device for vacuum pump Download PDFInfo
- Publication number
- CN204921989U CN204921989U CN201520728152.3U CN201520728152U CN204921989U CN 204921989 U CN204921989 U CN 204921989U CN 201520728152 U CN201520728152 U CN 201520728152U CN 204921989 U CN204921989 U CN 204921989U
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- stationary
- vacuum pump
- ring
- stationary seat
- seal ring
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a carborundum mechanical seal device for vacuum pump, cup joint stationary seat (2) on axle (1) including movable, spacing stationary seal ring (3) in stationary seat (2) of circumference, be equipped with between stationary seat (2) and stationary seal ring (3) ripples spring (4), stationary seat (2) are spacing to stationary seal ring (3) circumference through the recess that lug (2.1) on it imbedded on stationary seal rings (3), the utility model discloses sealed reliable, sealed stability is good, effectively avoid sealed mill flour dry friction.
Description
Technical field
The utility model relates to mechanical seal device field, is specifically a kind of vacuum pump mechanical sealing device of silicon carbide.
Background technique
Current vacuum pump mechanical sealing device of silicon carbide, comprise and being actively socketed on axle and the stationary seat fixing with seal chamber, circumference is limited in the stationary seal ring in stationary seat, and stationary seat is realized with the spacing lug embedding sealing stationary ring upper groove become by stationary seat upper punch swaging of the circumference of stationary seal ring; Stationary seat and vacuum pump Seal cage cavity are fixed, and are provided with ripple spring between stationary seat and stationary seal ring, and axle is provided with is close to stationary seal ring end face and the moving sealing ring linked with axle; Moving sealing ring in this structure rotates along with the rotation of pump shaft, and stationary seal ring and moving sealing ring are formed and seal flour milling to realize to pump inside and extraneous mechanical seal.But there is following shortcoming in the mechanical seal device of above prior art: the lug that stationary seat upper punch swaging becomes makes stationary seat periphery wall correspond to lug place has pit to exist, affect the sealability of stationary seat, unlubricated medium flow guide device on moving sealing ring simultaneously, because lubricant medium in vacuum pump cannot submergence moving sealing ring completely, sealing flour milling can cause dry friction and then cause seal failure due to lack of lubrication.
Model utility content
Technical problem to be solved in the utility model is, overcomes the shortcoming of above prior art: provide a kind of and seal vacuum pump mechanical sealing device of silicon carbide that is reliable, that seal good stability, effectively avoid sealing flour milling dry friction.
Technical solution of the present utility model is as follows: a kind of vacuum pump mechanical sealing device of silicon carbide, comprise the stationary seat be actively socketed on axle, circumference is limited in the stationary seal ring in stationary seat, be provided with ripple spring between described stationary seat and stationary seal ring, described stationary seat is spacing to stationary seal ring circumference by the groove on the lug embedding sealing stationary ring on it; The end face of described stationary seal ring is close on the moving sealing ring that links with axle by ripple spring; The outer side surface of described stationary seat is smooth cylndrical surface, and described moving sealing ring is provided with medium flow guide structure.
Described medium flow guide structure is made up of the external thread section be located on described moving sealing ring periphery wall and the conical surface between described external thread section and the seal face of moving sealing ring or annular stepped face.
The left-handed thread of described external thread section to be pitch be 1-2mm.
Described seal face is the end face that moving sealing ring and stationary seal ring are close to.
Described lug is the axially extended strip bulge along stationary seat.
The beneficial effects of the utility model are: the outer side surface due to the stationary seat of the utility model vacuum pump mechanical sealing device of silicon carbide is cylndrical surface and moving sealing ring is provided with medium flow guide structure, and therefore it has the advantages that sealing is reliable, seal good stability, effectively avoid sealing flour milling dry friction.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model vacuum pump mechanical sealing device of silicon carbide.
Fig. 2 is the structural representation of the utility model vacuum pump mechanical sealing device of silicon carbide stationary seat.
Fig. 3 is the sectional structure schematic diagram in A-A direction in Fig. 2.
In figure: 1, axle; 2, stationary seat; 2.1, lug; 3, stationary seal ring; 4, ripple spring; 5, moving sealing ring; 5.1, external thread section.
Embodiment
With specific embodiment, the utility model is described in further details below, but the utility model is not only confined to following specific embodiment.
Embodiment
As described in Fig. 1-3, a kind of vacuum pump mechanical sealing device of silicon carbide, comprise the stationary seat 2 be actively socketed on axle 1, circumference is limited in the stationary seal ring 3 in stationary seat 2, be provided with ripple spring 4 between described stationary seat 2 and stationary seal ring 3, described stationary seat 2 is spacing to stationary seal ring 3 circumference by the groove on the lug 2.1 embedding sealing stationary ring 3 on it; The end face of described stationary seal ring 3 is close on the moving sealing ring 5 that links with axle 1 by ripple spring 4; The outer side surface of described stationary seat 2 is smooth cylndrical surface, and described moving sealing ring 5 is provided with medium flow guide structure.Due to described stationary seat 2 for vacuum pump seal chamber fix, therefore, described pivot bush unit be spindle 1 through stationary seat 2 center hole, can only through and do not contact.
Described medium flow guide structure is made up of the conical surface between the external thread section 5.1 be located on described moving sealing ring 5 periphery wall and the seal face of described external thread section 5.1 and moving sealing ring 5 or annular stepped face.Lubricant medium effectively evenly can be imported seal face when axle 1 rotates by external thread section 5.1 and the conical surface or annular stepped, thus the seal failure problem that effectively prevent sealing flour milling dry friction and cause.
Described external thread section 5.1 for pitch be the left-handed thread of 1-2mm.
Described seal face is the end face that moving sealing ring 5 is close to stationary seal ring 3.
Described lug 2.1 is the axially extended strip bulge along stationary seat 2.
Described lug 2.1 is formed by punching press, and the outer side surface of the stationary seat 2 after punching press is ground to smooth cylndrical surface removal pit.
Below be only that feature of the present utility model implements example, the utility model protection domain is not constituted any limitation.The technological scheme that all employings exchange on an equal basis or equivalence is replaced and formed, all drops within the utility model rights protection scope.
Claims (5)
1. a vacuum pump mechanical sealing device of silicon carbide, comprise the stationary seat (2) be actively socketed on axle (1), circumference is limited in the stationary seal ring (3) in stationary seat (2), be provided with ripple spring (4) between described stationary seat (2) and stationary seal ring (3), described stationary seat (2) is spacing to stationary seal ring (3) circumference by the groove on lug (2.1) the embedding sealing stationary ring (3) on it; The end face of described stationary seal ring (3) is close on the moving sealing ring (5) that links with axle (1) by ripple spring (4); It is characterized in that: the outer side surface of described stationary seat (2) is smooth cylndrical surface, and described moving sealing ring (5) is provided with medium flow guide structure.
2. vacuum pump mechanical sealing device of silicon carbide according to claim 1, is characterized in that: described medium flow guide structure is made up of the conical surface between the external thread section (5.1) be located on described moving sealing ring (5) periphery wall and the seal face of described external thread section (5.1) and moving sealing ring (5) or annular stepped face.
3. vacuum pump mechanical sealing device of silicon carbide according to claim 2, is characterized in that: described external thread section (5.1) for pitch be the left-handed thread of 1-2mm.
4. vacuum pump mechanical sealing device of silicon carbide according to claim 2, is characterized in that: described seal face is the end face that moving sealing ring (5) is close to stationary seal ring (3).
5. vacuum pump mechanical sealing device of silicon carbide according to claim 1, is characterized in that: described lug (2.1) is the axially extended strip bulge along stationary seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728152.3U CN204921989U (en) | 2015-09-21 | 2015-09-21 | Carborundum mechanical seal device for vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520728152.3U CN204921989U (en) | 2015-09-21 | 2015-09-21 | Carborundum mechanical seal device for vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921989U true CN204921989U (en) | 2015-12-30 |
Family
ID=54971118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520728152.3U Active CN204921989U (en) | 2015-09-21 | 2015-09-21 | Carborundum mechanical seal device for vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303238A (en) * | 2019-07-24 | 2021-02-02 | 江苏鸿胜泵业科技有限公司 | Mechanical sealing device |
-
2015
- 2015-09-21 CN CN201520728152.3U patent/CN204921989U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303238A (en) * | 2019-07-24 | 2021-02-02 | 江苏鸿胜泵业科技有限公司 | Mechanical sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315104 Jin Yuan Road, Yinzhou investment and business center, Zhejiang, Ningbo, China, No. 666 Patentee after: Ningbo fu'erken Ceramic Technology Co. Ltd. Address before: 315104 No. 666 Jin Yuan Road, Yinzhou investment center, Ningbo, Zhejiang, Yinzhou District Patentee before: Ningbo Vulcan Mechanical Seals Manufacturing Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315104 Jin Yuan Road, Yinzhou investment and entrepreneurship center, Ningbo, Zhejiang 666 Patentee after: Ningbo Vulcan Polytron Technologies Inc Address before: 315104 Jin Yuan Road, Yinzhou investment and entrepreneurship center, Ningbo, Zhejiang 666 Patentee before: Ningbo fu'erken Ceramic Technology Co. Ltd. |
|
| CP01 | Change in the name or title of a patent holder |