CN201368057Y - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
- Publication number
- CN201368057Y CN201368057Y CNU2009201460948U CN200920146094U CN201368057Y CN 201368057 Y CN201368057 Y CN 201368057Y CN U2009201460948 U CNU2009201460948 U CN U2009201460948U CN 200920146094 U CN200920146094 U CN 200920146094U CN 201368057 Y CN201368057 Y CN 201368057Y
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- CN
- China
- Prior art keywords
- spring
- spring seat
- rotating shaft
- ring assembly
- model
- 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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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical sealing device, which comprises a stationary ring assembly, a movable ring assembly, a rotation shaft (12), a spring (8) and a spring seat (11), wherein the stationary ring assembly is sleeved on the rotation shaft (12), and is connected with a pump body (1), the movable ring assembly is connected with the rotation shaft (12), and the spring (8) is connected between the movable ring assembly and the spring seat (11). The mechanical sealing device is characterized in that the spring seat (11) and the rotation shaft (12) are in the clearance fit, and the clearance between the spring seat (11) and the rotation shaft (12) is 0.2mm-0.4mm. The clearance fit ranging from 0.2mm to 0.4mm enables the spring in the utility model to transmit balance force, thereby guaranteeing the operation of the movable ring more stable and reliable, and effectively improving the sealing performance of the mechanical sealing device.
Description
Technical field:
The utility model relates to a kind of pump of water, oil and general weak erosive chemical medium and mechanical seal device in the machinery of being applicable to.
Background technique:
As everyone knows, for guarantee rotating ring when operation steadily, reliable, thereby rotating ring and stationary ring can be fitted tightly and reach the better seal performance, at present, the mechanical seal device of many types all can be provided with a kind of spring between moving ring assembly and spring seat, the stretch compensation by spring guarantees fitting tightly of rotating ring and stationary ring.Yet, because spring seat is to be enclosed within the rotating shaft mostly, and the gap that the external peripheral surface of spring seat and rotating shaft exists is all more than 1mm, therefore, eccentric phenomena can take place in spring seat in the running of mechanical seal device, the power that the existence of eccentric phenomena makes spring can't transmit balance is given rotating ring, thereby causes the rotating ring operation not steady, finally greatly reduces the sealability of mechanical seal device.In addition,
The model utility content:
The technical problems to be solved in the utility model is, a kind of power that can make spring transmit balance is provided, the operation that guarantees rotating ring more steadily, reliable, thereby effectively improve the mechanical seal device of sealability.
Technical solution of the present utility model is, a kind of mechanical seal device with following structure is provided, and it comprises static components, moving ring assembly, rotating shaft, spring and spring seat; Described static components is enclosed within the rotating shaft and with the pump housing and is connected; Described moving ring assembly is connected with rotating shaft; Described spring is connected between moving ring assembly and the spring seat; It between described spring seat and the rotating shaft Spielpassung; Gap between described spring seat and the rotating shaft is 0.2mm～0.4mm.
After adopting above structure, compared with prior art, the utlity model has following advantage: with mechanical seal device employing spring socket sleeve is different in rotating shaft mostly at present, what the annexation between spring abutment and the rotating shaft of being hit by a bullet the utility model adopted is gap fiting mode, and with the gap control between spring seat and the rotating shaft between 0.2mm～0.4mm, because the clearance distance between spring seat and the rotating shaft reduces greatly, therefore, the utility model can prevent effectively that spring seat from the running of mechanical seal device eccentric phenomena taking place, thereby the power that makes spring can transmit balance is given rotating ring, the operation that guarantees rotating ring is more steady, reliably, improve the sealability of mechanical seal device greatly.
Description of drawings:
Accompanying drawing is the structural representation of a kind of mechanical seal device of the utility model.
Spring slot as shown in the figure, 1, the pump housing, 2, the stationary ring cover, 3, convex tendon, 4, stationary ring, 5, rotating ring, 6, rotating seat, 7, fastening ring, 8, spring, 9, rubber corrugated pipe, 10, collar, 11, spring seat, 12, rotating shaft, 13.
Specific embodiment:
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
As shown in drawings, in this specific embodiment, a kind of mechanical seal device of the utility model comprises static components, moving ring assembly, rotating shaft 12, spring 8 and spring seat 11; Described static components comprises stationary ring cover 2 and stationary ring 4; Described stationary ring cover 2 and the pump housing 1 interference fit; Described stationary ring overlaps and is distributed with some convex tendons 3 with diameter on 2 outer round surface, convex tendon 3 the sealing that can further improve between the stationary ring 4 and the pump housing 1 is set; Described stationary ring 4 is enclosed within the rotating shaft 12; Described moving ring assembly comprises rotating ring 5, rotating seat 6, collar 10, fastening ring 7 and rubber corrugated pipe 9; Described rotating ring 5 is contained in 6 li of rotating seats; The working surface of described rotating ring 5 is that the working surface of left side and stationary ring 4 is to fit in the right side, and the non-working surface of described rotating ring 5 is that the left side of right side and rubber corrugated pipe 9 fits tightly; Described rubber corrugated pipe 9 left parts are positioned at rotating seat 6, and its right part and rotating shaft 12 and fastening ring 7 be interference fit simultaneously; Described fastening ring 7 is synchronous to protect circumference with the groove running fit on the rotating seat 6; Described rubber corrugated pipe 9 left part neck support have collar 10; The left end of described spring 8 is plugged on the spring slot 13 of fastening ring 7 in the mode of running fit, and the right-hand member of described spring 8 and spring seat 11 interference fit come off to prevent it; Be Spielpassung between described spring seat 11 and the rotating shaft 12; Gap between described spring seat 11 and the rotating shaft 12 is 0.3mm.Usually be enclosed within on the rotating seat different with spring described in the prior art 8, spring described in the utility model 8 is to be plugged on the spring slot 13 of fastening ring 7 in the running fit mode, therefore, sealing radial dimension of the present utility model has obtained reducing greatly, thereby the utility model can be installed in the less pump of radial dimension and other machinery.
Gap between spring seat described in the utility model 11 and the rotating shaft 12 is not limited to 0.3mm, and it also can be 0.25mm or 0.35mm, so long as in 0.2mm～0.4mm scope, then all fall into protection domain of the present utility model.In addition; moving ring assembly in the utility model and static components also are not limited to described in the foregoing description; it also can adopt other structures, is that Spielpassung and gap are that the scope of 0.2mm～0.4mm then all falls into protection domain of the present utility model as long as guarantee between spring seat 11 and the rotating shaft 12.
Claims (2)
1, a kind of mechanical seal device, it comprises static components, moving ring assembly, rotating shaft (12), spring (8) and spring seat (11); Described static components is enclosed within rotating shaft (12) and upward and with the pump housing (1) is connected; Described moving ring assembly is connected with rotating shaft (12); Described spring (8) is connected between moving ring assembly and the spring seat (11), it is characterized in that: be Spielpassung between described spring seat (11) and the rotating shaft (12); Gap between described spring seat (11) and the rotating shaft (12) is 0.2mm～0.4mm.
2, mechanical seal device according to claim 1 is characterized in that: described spring seat (11) is 0.3mm with the gap of rotating shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201460948U CN201368057Y (en) | 2009-03-24 | 2009-03-24 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201460948U CN201368057Y (en) | 2009-03-24 | 2009-03-24 | Mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201368057Y true CN201368057Y (en) | 2009-12-23 |
Family
ID=41486950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201460948U Expired - Fee Related CN201368057Y (en) | 2009-03-24 | 2009-03-24 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201368057Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352984A (en) * | 2013-07-23 | 2013-10-16 | 天津市联强机械密封技术有限公司 | Rubber corrugated pipe mechanical sealing structure of pump shaft |
| CN103447326A (en) * | 2013-09-03 | 2013-12-18 | 江苏兴达钢帘线股份有限公司 | Mechanical seal structure of main shaft of water tank wire drawing machine |
| CN108506495A (en) * | 2018-05-30 | 2018-09-07 | 北京化工大学 | Sealing ring, seal assembly and mechanical equipment |
-
2009
- 2009-03-24 CN CNU2009201460948U patent/CN201368057Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352984A (en) * | 2013-07-23 | 2013-10-16 | 天津市联强机械密封技术有限公司 | Rubber corrugated pipe mechanical sealing structure of pump shaft |
| CN103352984B (en) * | 2013-07-23 | 2016-01-27 | 天津市联强机械密封技术有限公司 | A kind of rubber bellows mechanical seal structure of pump shaft |
| CN103447326A (en) * | 2013-09-03 | 2013-12-18 | 江苏兴达钢帘线股份有限公司 | Mechanical seal structure of main shaft of water tank wire drawing machine |
| CN108506495A (en) * | 2018-05-30 | 2018-09-07 | 北京化工大学 | Sealing ring, seal assembly and mechanical equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20140324 |
|
| DD01 | Delivery of document by public notice |
Addressee: Lou Hubin Document name: Notification of Termination of Patent Right |