CN203532750U - Silicon carbide rubber bellows-type mechanical seal device - Google Patents
Silicon carbide rubber bellows-type mechanical seal device Download PDFInfo
- Publication number
- CN203532750U CN203532750U CN201320647288.2U CN201320647288U CN203532750U CN 203532750 U CN203532750 U CN 203532750U CN 201320647288 U CN201320647288 U CN 201320647288U CN 203532750 U CN203532750 U CN 203532750U
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- China
- Prior art keywords
- spring
- ring
- rubber bellows
- mechanical seal
- seal device
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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
Links
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a silicon carbide rubber bellows-type mechanical seal device. The silicon carbide rubber bellows-type mechanical seal device comprises a static ring (1) fixed to a pump, a rubber bellows (3) in close fit with a rotating shaft (2), a spring (4), a movable ring (5) and a transmission ring (6). The inner wall of the tail of the rubber bellows is in close fit with the rotating shaft (2). The head of the rubber bellows is in close fit with the movable ring (5). One end face of the movable ring (5) is in press fit with one end face of the static ring (1) through the spring (4). The silicon carbide rubber bellows-type mechanical seal device is characterized in that the spring (4) is a drum-shaped spring, a gap exists between the head of the rubber bellows (3) and the rotating shaft (2), the transmission ring (6) is in interference fit with the rubber bellows (3), and the spring (4) is in interference fit with the transmission ring (6). According to the silicon carbide rubber bellows-type mechanical seal device, the service life of the rubber bellows (3) and even the service life of the whole mechanical seal device can be prolonged, and friction between the spring and the rubber bellows can be avoided.
Description
Technical field
The utility model relates to mechanical seal device, is specifically a kind of silicon carbide rubber bellows type mechanical seal device.
Background technique
The stationary ring that has at present a kind of mechanical seal device to comprise to be fixed on the pump housing, with rubber corrugated pipe, spring, the rotating ring of rotating shaft close-fitting; Described spring housing is connected on outside rubber corrugated pipe, the inwall close-fitting of one end of described rubber corrugated pipe is in rotating shaft, the other end and rotating ring close-fitting, one end end face of rotating ring is force-fitted on one end end face of stationary ring by spring, when fluid machinery is worked, rubber corrugated pipe assembly will rotate with running shaft, and the pump housing is static relatively for stationary ring, and then between two seal rings, form boundary friction or semi-fluid friction, finally realize the sealing between running shaft and body.
There is following shortcoming in the mechanical seal device of above prior art:
1, between rubber corrugated tube head and rotating shaft, contact, make the friction of rubber corrugated tube head and rotating shaft, increased frictional loss, reduced the working life of rubber corrugated pipe and even whole mechanical seal.Described in 2, the spring of mechanical seal is conventional spiral cylindrical spring.When rubber corrugated pipe is deformed by axial compression, spring is subject to its radial deformation, and spring and rubber corrugated pipe rub, and stable elastic force cannot be provided.
Model utility content
The technical problems to be solved in the utility model is that providing a kind of can increase the working life of rubber corrugated pipe and even whole mechanical seal, the silicon carbide rubber bellows type mechanical seal device of avoiding spring and rubber corrugated pipe generation to rub.
The technical solution of the utility model is, a kind of a kind of silicon carbide rubber bellows type mechanical seal device with following structure is provided, comprise the stationary ring that is fixed on the pump housing, with rubber corrugated pipe, spring, rotating ring and the transmission ring of rotating shaft close-fitting; Described transmission ring is socketed in outside rubber corrugated pipe, and described spring housing is connected on outside transmission ring, the inwall close-fitting of the afterbody of described rubber corrugated pipe in rotating shaft, head and rotating ring close-fitting, one end end face of described rotating ring is force-fitted on one end end face of stationary ring by spring; Described spring is barrel-shaped spring, between described rubber corrugated tube head and rotating shaft, has gap, interference fit between described transmission ring and rubber corrugated pipe, interference fit between described spring and transmission ring.
The middle part sidewall radially outward projection of described spring.
Adopt after said structure, the utility model compared with prior art, have the following advantages: 1, than 0 shape, enclose as auxiliary seal, rubber corrugated pipe has undamped advantage, the laminating degree that has increased sealing surface, has improved the sealability of mechanical seal, allows the spring of selecting elastic force less simultaneously, reduce the initial specific pressure of sealing surface, extended the working life of seal ring.Between rubber corrugated tube head and axle, there is gap, avoided the friction of rubber corrugated tube head and axle, reduced frictional loss, increased the working life of rubber corrugated pipe and even whole mechanical seal.2, the rotating ring rotation torque of described mechanical seal is realized transmission by the interference fit between the interference fit between the interference fit between rubber corrugated pipe and axle, transmission ring and rubber corrugated pipe and barrel-shaped spring and transmission ring, there is reliable transmission, do not hinder the advantage of axle.Elastic element due to described mechanical seal is barrel-shaped spring again, and when rubber corrugated pipe is deformed by axial compression, barrel-shaped spring can bear its radial deformation, avoids barrel-shaped spring and rubber corrugated pipe to rub, and still can provide stable elastic force.
As improvement, the middle part sidewall radially outward projection of described spring, adopts cambered outwards arc structure to connect between rubber corrugated tube head and afterbody, avoid when rubber corrugated pipe is squeezed, and rubber inwardly pushes or ruptures.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of a kind of silicon carbide rubber bellows type mechanical seal device of the present utility model.
As shown in the figure: 1, stationary ring, 2, rotating shaft, 3, rubber corrugated pipe, 4, spring, 5, rotating ring, 6, transmission ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of silicon carbide rubber bellows type mechanical seal device of the present utility model, comprise the stationary ring 1 that is fixed on the pump housing, with rubber corrugated pipe 3, spring 4, rotating ring 5 and the transmission ring 6 of rotating shaft 2 close-fittings; Described transmission ring 6 is socketed in outside rubber corrugated pipe 3, described spring 4 is socketed in outside transmission ring 6, the inwall close-fitting of the afterbody of described rubber corrugated pipe 3 in rotating shaft 2, head and rotating ring 5 close-fittings, one end end face of described rotating ring 5 is force-fitted on one end end face of stationary ring 1 by spring 4; It is characterized in that: described spring 4 is barrel-shaped spring, has gap, interference fit between described transmission ring 6 and rubber corrugated pipe 3, interference fit between described spring 4 and transmission ring 6 between described rubber corrugated pipe 3 heads and rotating shaft 2.
The middle part sidewall radially outward projection of described spring 4.
Claims (2)
1. a silicon carbide rubber bellows type mechanical seal device, comprise the stationary ring (1) that is fixed on the pump housing, with rubber corrugated pipe (3), spring (4), rotating ring (5) and the transmission ring (6) of rotating shaft (2) close-fitting; Described transmission ring (6) is socketed in outside rubber corrugated pipe (3), and described spring (4) is socketed in outside transmission ring (6); The inwall close-fitting of the afterbody of described rubber corrugated pipe (3) is upper in rotating shaft (2), head and rotating ring (5) close-fitting, and one end end face of described rotating ring (5) is force-fitted on one end end face of stationary ring (1) by spring (4); It is characterized in that: described spring (4) is barrel-shaped spring, between described rubber corrugated pipe (3) head and rotating shaft (2), there is gap, interference fit between described transmission ring (6) and rubber corrugated pipe (3), interference fit between described spring (4) and transmission ring (6).
2. a kind of silicon carbide rubber bellows type mechanical seal device according to claim 1, is characterized in that: the middle part sidewall radially outward projection of described spring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320647288.2U CN203532750U (en) | 2013-10-18 | 2013-10-18 | Silicon carbide rubber bellows-type mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320647288.2U CN203532750U (en) | 2013-10-18 | 2013-10-18 | Silicon carbide rubber bellows-type mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532750U true CN203532750U (en) | 2014-04-09 |
Family
ID=50418961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320647288.2U Expired - Lifetime CN203532750U (en) | 2013-10-18 | 2013-10-18 | Silicon carbide rubber bellows-type mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532750U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402104A (en) * | 2015-12-16 | 2016-03-16 | 淄博华舜耐腐蚀真空泵有限公司 | Mechanical sealing element and mechanical sealing structure for vacuum pump |
| CN105987045A (en) * | 2015-03-05 | 2016-10-05 | 无锡大金高精度冷拔钢管有限公司 | Oil-leakage-preventing oil cylinder with rubber corrugated pipe for marine equipment engineering |
-
2013
- 2013-10-18 CN CN201320647288.2U patent/CN203532750U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987045A (en) * | 2015-03-05 | 2016-10-05 | 无锡大金高精度冷拔钢管有限公司 | Oil-leakage-preventing oil cylinder with rubber corrugated pipe for marine equipment engineering |
| CN105402104A (en) * | 2015-12-16 | 2016-03-16 | 淄博华舜耐腐蚀真空泵有限公司 | Mechanical sealing element and mechanical sealing structure for vacuum pump |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315104 Jin Yuan Road, Yinzhou investment and business center, Zhejiang, Ningbo, China, No. 666 Patentee after: NINGBO VULCAN CERAMIC TECHNOLOGY CO.,LTD. Address before: 315104 Jin Yuan Road, Yinzhou investment and business center, Zhejiang, Ningbo, China, No. 666 Patentee before: NINGBO VULCAN MECHANICAL SEALS MANUFACTURING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| 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 TECHNOLOGY Co.,Ltd. Address before: 315104 Jin Yuan Road, Yinzhou investment and entrepreneurship center, Ningbo, Zhejiang 666 Patentee before: NINGBO VULCAN CERAMIC TECHNOLOGY CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |