CN201232656Y - Mechanical sealing device for centrifugal pump - Google Patents
Mechanical sealing device for centrifugal pump Download PDFInfo
- Publication number
- CN201232656Y CN201232656Y CNU2008201180957U CN200820118095U CN201232656Y CN 201232656 Y CN201232656 Y CN 201232656Y CN U2008201180957 U CNU2008201180957 U CN U2008201180957U CN 200820118095 U CN200820118095 U CN 200820118095U CN 201232656 Y CN201232656 Y CN 201232656Y
- Authority
- CN
- China
- Prior art keywords
- ring
- axle sleeve
- centrifugal pump
- mechanical seal
- external member
- 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 title description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 210000005056 cell body Anatomy 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 4
- 210000005069 ears Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical seal device of a centrifugal pump, which includes a shaft sleeve; one end of the shaft sleeve is sheathed and fixed with an elastic transmission device; the other end of the shaft sleeve is provided with a locating device which is fixedly connected with the shaft sleeve; a dynamic ring sleeve and a static ring sleeve are also arranged between the elastic transmission device and the locating device; the static ring sleeve is sheathed outside the shaft sleeve and is connected with the locating device in a pressing way; one end of the dynamic ring sleeve is elastically connected with the elastic transmission device; the other end is connected with the static ring sleeve; the dynamic ring sleeve is also movably connected with the shaft sleeve. The mechanical seal device of a centrifugal pump changes the separate mechanical seal into an integral containing mechanical seal, is more conveniently assembled and changed, has good seal performances, has long service life and is not easy to be damaged.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly a kind of centrifugal pump mechanical seal device.
Background technique
The separate mechanical sealing is adopted in the sealing of existing centrifugal pump.There is following shortcoming in the mechanical seal of this structure:
1. rotating ring and stationary ring are packed into for separating when assembling, if change mechanical seal, need take the machine sealed cover apart, take out rotating ring and stationary ring then respectively, thus in the assembling of mechanical seal and when changing than bothering;
2. in assembly process, personal factor is more, and as circumferencial direction unbalance stress when packing stationary ring into, so spring does not wait in the circumferencial direction decrement, the elastic force inequality causes O RunddichtringO decrement is not waited, and the sealing of machine envelope is poor;
3. existing separate mechanical sealing is subject to the influence of whole pump housing dimensional chain and machining error, also is subject to the moving influence of rotor string;
4. because spring, rotating ring, stationary ring and the O RunddichtringO unbalance stress of existing mechanical sealing, so the machine envelope is fragile.
Summary of the invention
For overcoming the shortcoming that exists in the above prior art, the utility model provides a kind of improved centrifugal pump seal arrangement, changes existing separate mechanical sealing into whole integrated mechanical sealing.
The utility model centrifugal pump mechanical seal device, comprise axle sleeve, fix an elastic transmission device at axle sleeve one end suit, the axle sleeve the other end has a positioning device of fixedlying connected with axle sleeve, between described elastic transmission device and positioning device, also comprise rotating ring external member and stationary ring external member, the stationary ring external member be set in outside the axle sleeve and with described positioning device crimping, rotating ring external member one end is connected with elastic transmission device elasticity, the other end is connected with the stationary ring external member, and the rotating ring external member also flexibly connects with axle sleeve.
In technique scheme, the elastic transmission device can comprise spring seat and spring, and spring seat is fixedlyed connected with axle sleeve, and spring is located between spring seat and the axle sleeve, and with the crimping of rotating ring external member elasticity; The rotating ring external member can comprise rotating seat and rotating ring, and rotating seat is set in outside the axle sleeve, and an end and described spring crimping, and the other end and rotating ring are tightly connected; The stationary ring external member can comprise stationary ring cover and stationary ring, and stationary ring is placed in outside the axle sleeve, and an end contacts with rotating ring, and the other end and stationary ring cover are tightly connected, and stationary ring overlaps and is connected with positioning device; Positioning device can comprise a positioning ring, and positioning ring is fixedlyed connected with axle sleeve.
In technique scheme, the spring seat inner ring can have the uniform driving pawl of symmetry, and the rotating seat outer ring has the uniform cell body of symmetry, and driving pawl and cell body are suitable; Rotating seat one end can have the uniform breach of symmetry, and the rotating ring outer ring can have the uniform transmission ear of symmetry, and the transmission ear is installed between the breach; The axle sleeve inner ring can have first groove, and O type first seal ring is housed in first groove; Stationary ring cover outer ring can have second groove, and O type second seal ring is housed in second groove.
Centrifugal pump mechanical seal device assembling of the present utility model and replacing are convenient, good seal performance, and long service life, not fragile.
Description of drawings
Fig. 1 is a kind of centrifugal pump mechanical seal device of the utility model structural representation;
Fig. 2 is the structural representation of a kind of centrifugal pump mechanical seal device of the utility model Intermediate shaft sleeve;
Fig. 3 is a kind of centrifugal pump mechanical seal device of the utility model medi-spring stand structure schematic representation;
Fig. 4 is a rotating seat structural representation in a kind of centrifugal pump mechanical seal device of the utility model;
Fig. 5 is a rotating ring structural representation in a kind of centrifugal pump mechanical seal device of the utility model;
Fig. 6 is a stationary ring structural representation in a kind of centrifugal pump mechanical seal device of the utility model;
Fig. 7 is a stationary ring nested structure schematic representation in a kind of centrifugal pump mechanical seal device of the utility model;
Fig. 8 is a locating ring structure schematic representation in a kind of centrifugal pump mechanical seal device of the utility model.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-axle sleeve, 2-first seal ring, 3-spring seat, 4-spring, the 5-rotating seat, 6-seal ring of moving ring, 7-rotating ring, 8-stationary ring, 9-stationary ring cover, 10-second seal ring, 11-stationary ring seal ring, 12-positioning ring, the 13-screw, 14-axle, 31-driving pawl, 51-cell body, the 52-breach, 71-transmission ear, 91-second groove, 111-first groove, 112-axle sleeve screw, 121-positioning screw hole.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.
Whole integrated mechanical sealing of the present utility model is installed in the stainless steel multistage centrifugal pump, as shown in Figure 1 and Figure 2, comprise axle sleeve 1, elastic transmission device, rotating ring external member, stationary ring external member and positioning device, the inner ring of axle sleeve 1 one ends has in circle first groove 111, the first grooves 0 type, first seal ring 2 is housed.The elastic transmission device specifically comprises spring seat 3 and spring 4, and the spring seat suit is fixed on the axle sleeve, spring be placed on the axle sleeve and be loaded on spring seat and axle sleeve between.The axle sleeve the other end has three uniform axle sleeve screws 112.The rotating ring external member comprises rotating ring 7 and rotating seat 5, and rotating seat 5 is placed on the axle sleeve and is positioned at (Fig. 1 medi-spring right positions) on the spring, and flexibly connects with axle sleeve.The stationary ring external member comprises stationary ring 8 and stationary ring cover 9, and stationary ring is placed in outside the axle sleeve, and an end contacts with rotating ring, and the other end and stationary ring cover are tightly connected, and stationary ring overlaps and is connected with positioning device; Positioning device can comprise a positioning ring, and positioning ring is fixedlyed connected with axle sleeve.
The spring seat inner ring has two uniform driving pawls 31 of symmetry; The rotating seat outer ring has two uniform cell bodies 51 of symmetry, and driving pawl 31 is suitable with cell body 51, and rotating seat one end has two uniform breach 52 of symmetry.Rotating seat top (right positions among Fig. 1), and be fixed with O type seal ring of moving ring 6 between the rotating ring 7.The outer ring of rotating ring 7 has two uniform transmission ears 71 of symmetry, and rotating ring is stuck between the breach 52 of rotating seat by transmission ear 71.On the stationary ring 8, between stationary ring 8 and stationary ring cover 9, be fixed with O type stationary ring seal ring 11; Stationary ring 8 is enclosed within on the axle sleeve, contacts with the last plane (plane, right side among the figure) of rotating ring 7; Stationary ring cover 9 is fixedlyed connected with stationary ring by the O type stationary ring seal ring on the stationary ring, and stationary ring cover outer ring has a circle second groove 91, the second groove internal fixation connection O type second seal ring 10; Stationary ring cover 9 is fixedlyed connected with positioning ring 12; Positioning ring 12 has three uniform positioning screw holes 121, and this positioning screw hole 121 is suitable with the axle sleeve screw 112 on the axle sleeve, fixedlys connected by axle sleeve screw uniform on hexagonal Cock screw 13 in the tip and the axle sleeve.
This device has adopted whole integrated mechanical sealing, and is easy to loading and unloading, improved sealability effectively, prolonged the working life of product.
More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (9)
1. centrifugal pump mechanical seal device, comprise axle sleeve, it is characterized in that, fix an elastic transmission device at described axle sleeve one end suit, the described axle sleeve the other end has a positioning device of fixedlying connected with axle sleeve, between described elastic transmission device and positioning device, also comprise rotating ring external member and stationary ring external member, described stationary ring external member be set in outside the described axle sleeve and with described positioning device crimping, described rotating ring external member one end is connected with described elastic transmission device elasticity, the other end is connected with described stationary ring external member, and described rotating ring external member also flexibly connects with described axle sleeve.
2. centrifugal pump mechanical seal device according to claim 1, it is characterized in that described elastic transmission device comprises spring seat and spring, described spring seat is fixedlyed connected with described axle sleeve, spring is located between described spring seat and the axle sleeve, and with the crimping of described rotating ring external member elasticity.
3. centrifugal pump mechanical seal device according to claim 2 is characterized in that, described rotating ring external member comprises rotating seat and rotating ring, and rotating seat is set in outside the described axle sleeve, and an end and described spring crimping, and the other end and described rotating ring are tightly connected.
4. centrifugal pump mechanical seal device according to claim 3 is characterized in that, described stationary ring external member comprises stationary ring cover and stationary ring, stationary ring is placed in outside the described axle sleeve, and an end contacts with described rotating ring, and the other end and described stationary ring cover are tightly connected, and described stationary ring cover is connected with described positioning device.
5. according to any described centrifugal pump mechanical seal device of claim 1 to 4, it is characterized in that described positioning device comprises a positioning ring, described positioning ring is fixedlyed connected with axle sleeve.
6. centrifugal pump mechanical seal device according to claim 3 is characterized in that, described spring seat inner ring has the uniform driving pawl of symmetry, and the rotating seat outer ring has the uniform cell body of symmetry, and described driving pawl and cell body are suitable.
7. centrifugal pump mechanical seal device according to claim 3 is characterized in that, described rotating seat one end has the uniform breach of symmetry, and described rotating ring outer ring has the uniform transmission ear of symmetry, and described transmission ear is installed between the described breach.
8. according to any described centrifugal pump mechanical seal device of claim 1 to 4, it is characterized in that described axle sleeve inner ring has first groove, O type first seal ring is housed in described first groove.
9. centrifugal pump mechanical seal device according to claim 4 is characterized in that, described stationary ring cover outer ring has second groove, and O type second seal ring is housed in described second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201180957U CN201232656Y (en) | 2008-06-10 | 2008-06-10 | Mechanical sealing device for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201180957U CN201232656Y (en) | 2008-06-10 | 2008-06-10 | Mechanical sealing device for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232656Y true CN201232656Y (en) | 2009-05-06 |
Family
ID=40619034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201180957U Expired - Fee Related CN201232656Y (en) | 2008-06-10 | 2008-06-10 | Mechanical sealing device for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232656Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985947A (en) * | 2010-10-26 | 2011-03-16 | 蒋敏 | Containerization-type mechanical seal |
| CN102192182A (en) * | 2011-05-17 | 2011-09-21 | 浙江天德泵业有限公司 | Seal combined structure of centrifugal pump |
| CN101655100B (en) * | 2009-09-18 | 2012-07-04 | 浙江飞旋泵业有限公司 | Integrated mechanical sealing device for pump |
| CN102954031A (en) * | 2012-11-30 | 2013-03-06 | 无锡艾比德泵业有限公司 | Mechanical seal of centrifugal pump |
| CN108138969A (en) * | 2015-10-30 | 2018-06-08 | Ksb 股份公司 | Components for shaft seals |
| CN110088479A (en) * | 2016-12-23 | 2019-08-02 | 格兰富控股联合股份公司 | Centrifugal pump |
-
2008
- 2008-06-10 CN CNU2008201180957U patent/CN201232656Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655100B (en) * | 2009-09-18 | 2012-07-04 | 浙江飞旋泵业有限公司 | Integrated mechanical sealing device for pump |
| CN101985947A (en) * | 2010-10-26 | 2011-03-16 | 蒋敏 | Containerization-type mechanical seal |
| CN102192182A (en) * | 2011-05-17 | 2011-09-21 | 浙江天德泵业有限公司 | Seal combined structure of centrifugal pump |
| CN102954031A (en) * | 2012-11-30 | 2013-03-06 | 无锡艾比德泵业有限公司 | Mechanical seal of centrifugal pump |
| CN108138969A (en) * | 2015-10-30 | 2018-06-08 | Ksb 股份公司 | Components for shaft seals |
| CN110088479A (en) * | 2016-12-23 | 2019-08-02 | 格兰富控股联合股份公司 | Centrifugal pump |
| US11162504B2 (en) | 2016-12-23 | 2021-11-02 | Grundfos Holding A/S | Centrifugal pump |
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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: 20090506 Termination date: 20130610 |