CN207879679U - Centrifugal pump mechanical sealing device of silicon carbide - Google Patents
Centrifugal pump mechanical sealing device of silicon carbide Download PDFInfo
- Publication number
- CN207879679U CN207879679U CN201721658316.5U CN201721658316U CN207879679U CN 207879679 U CN207879679 U CN 207879679U CN 201721658316 U CN201721658316 U CN 201721658316U CN 207879679 U CN207879679 U CN 207879679U
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- Prior art keywords
- gland
- axle sleeve
- rotating ring
- ring
- sealing
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a kind of centrifugal pump mechanical sealing device of silicon carbide, including the axle sleeve (1) being socketed on axis, the first rotating ring (2) circumferentially limited with axle sleeve (1), the first stationary ring (4) and elastic parts that are located on the first gland (3)；First stationary ring (4) is coordinated by elastic parts and the first rotating ring (2) dynamic sealing；It is characterized in that：It is further fixed on the second gland (5) on the outside of first gland (3), one group of auxiliary sealing structure is additionally provided between second gland (5) and axle sleeve (1).The device can cool down the sealing surface of rotating ring and stationary ring, the impurity for rinsing sealing surface, can guarantee normal leakproofness, has two groups of sealing structures, better tightness.
Description
Technical field
The utility model is related to technical field of mechanical, are especially a kind of centrifugal pump silicon carbide mechanical seal dress
It sets.
Background technology
There is a centrifugal pump mechanical sealing device of silicon carbide at present, including rotating seat, gland are circumferentially limited in rotating seat
On moving sealing ring, the stationary seal ring with gland sealing cooperation, the gland is equipped with carries out circumferential limit to stationary seal ring
With the gasket of axial limiting, gap, side of the gasket radially away from stationary seal ring are equipped between the gland and gasket
The compensation component that at least two pairs of gaskets carry out axial limiting is connected between edge and gland.The edge of the gasket is uniformly set
There are several through-holes circumferentially arranged, the compensation component includes the fixing piece being fixedly connected with gland across through-hole, described
Fixing piece be arranged with the elastic component contradicted respectively with gasket end face and fixing piece tail end, through-hole is uniformly distributed, make fixing piece and
Elastic component is evenly distributed on the end face edge of gasket, and elastic component is made with media contact, not avoid corrosion of the medium to spring, and
Elastic component energy stable and uniform provides compensation elastic force by gasket to stationary ring, and the fixing piece is fixedly connected on gland, Gu
Determine part to play the role of limiting it among circumferentially positioned and described elastic component equipped with fixing piece, fixing to gasket, prevent
Only spring deflects.
Although the mechanically-sealing apparatus compensation component of this above spline structure is arranged in gasket edge, and gasket edge externally protrudes out in
Stationary seal ring makes compensation component with media contact, not avoid corrosion of the medium to compensation component, improves the use of compensation component
Service life；And the compensation component had not only played the extruding on the axial direction to gasket, but also circumferentially positioned work is played to gasket
With that is, compensation component is fixed together with gasket and gland, and the structure installation is complete post-compensation component provides compensation to stationary ring
Elastic force makes entire mechanically-sealing apparatus structure more compact.But still have following deficiency：1, the sealing of rotating ring and stationary ring
Face calorific value is larger, and impurity is easy to accumulate in the sealing surface, to influence normal leakproofness.2, due to the use of in feature
Pump on if, the only sealing mechanism of one group of rotating ring and stationary ring, in case of unexpected, seal failure, medium can be leaked directly.
Utility model content
The technical problems to be solved in the utility model be to provide it is a kind of can cooling rotating ring and stationary ring sealing surface, rinse it is close
The impurity of cover, the centrifugal pump silicon carbide mechanical seal that can guarantee normal leakproofness, have two groups of sealing structures, better tightness
Device.
The technical solution of the utility model is to provide a kind of centrifugal pump having following structure silicon carbide mechanical seal dress
It sets, including the axle sleeve being socketed on axis, the first rotating ring circumferentially limited with axle sleeve, the first stationary ring and bullet that are located on the first gland
Property component；First stationary ring is coordinated by elastic parts and the first rotating ring dynamic sealing；The outside of first gland is also fixed
There is the second gland, one group of auxiliary sealing structure is additionally provided between second gland and axle sleeve.
The auxiliary sealing structure includes the bellows being socketed on axle sleeve, is located at the limit pad of bellows one end, is located at
Second rotating ring of the bellows other end, the second stationary ring for being located at the second gland inner end；Second rotating ring moves close with the second stationary ring
Envelope cooperation, the limit pad axial limiting on axle sleeve, a spring, the both ends of first spring are socketed with outside the bellows
Respectively with the end face of two steps of line pipe outer wall.
It is additionally provided with radially distributed at least one inlet and liquid outlet on first gland, the inlet and goes out liquid
Mouthful cavity formed with the first gland, the second gland and axle sleeve is connected to, the sealing surface of described and the first rotating ring and the first stationary ring with
And second rotating ring be in contact with cavity with the sealing surface of the second stationary ring.
The elastic parts includes that edge is uniformly provided with the gasket of several through-holes circumferentially arranged, the through-hole across gasket
The bolt being threadedly coupled with the first gland and the second spring being socketed on bolt, the both ends of the second spring respectively with gasket
End face and the end face of bolt head offset.
After using the above structure, the utility model technology compared with prior art, has the following advantages：1, due to described
It is additionally provided with radially distributed at least one inlet and liquid outlet on one gland, the inlet and liquid outlet and the first gland,
Second gland is connected to the cavity that axle sleeve is formed, described with the first rotating ring and the sealing surface of the first stationary ring and the second rotating ring and the
The sealing surface of two stationary rings is in contact with cavity, to make two groups of sealing surfaces of the coolant liquid pair come in from inlet be rinsed with it is cold
But, it can guarantee normal leakproofness.2, due to being further added by one group of auxiliary sealing structure, to close in the first rotating ring and the first stationary ring
In the case of envelope failure, auxiliary sealing structure can also play certain sealing effect, considerably increase the close of entire mechanical seal
Envelope property effect；And still having excellent sealing effect under larger axial float, floatability is good, can be certainly when axis or cavity deflection
Dynamic centering.
Description of the drawings
Attached drawing 1 is the cross-sectional view of the centrifugal pump mechanical sealing device of silicon carbide of the utility model.
As shown in the figure：
1, axle sleeve, the 2, first rotating ring, the 3, first gland, the 4, first stationary ring, the 5, second gland, 6, bellows, 7, limit pad,
8, the second rotating ring, the 9, second stationary ring, the 10, first spring, 11, gasket, 12, bolt, 13, second spring.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the centrifugal pump mechanical sealing device of silicon carbide of the utility model, including the axle sleeve that is socketed on axis
1, the first rotating ring 2 circumferentially limited with axle sleeve 1, the first stationary ring 4 and elastic parts that are located on the first gland 3；Described first is quiet
Ring 4 is coordinated by elastic parts and 2 dynamic sealing of the first rotating ring；First rotating ring 2 with the inner face of bolt and axle sleeve 2 by mostly limiting
Position, is equipped with spacing between the inner wall and axle sleeve 1 of first stationary ring 4, the two is not in direct contact.The outside of first gland 3
It is further fixed on the second gland 5, one group of auxiliary sealing structure is additionally provided between second gland 5 and axle sleeve 1.First gland 3,
Two glands 5 and axle sleeve 1 form a cavity.The auxiliary sealing structure is located in the cavity.
The auxiliary sealing structure includes the bellows 6 being socketed on axle sleeve 1, be located at the limit pad 7 of 6 one end of bellows,
It is located at the second rotating ring 8 of 7 other end of bellows, is located at the second stationary ring 9 of 5 inner end of the second gland；Second rotating ring 8 is fixed on ripple
In the groove of 6 one end of pipe, second stationary ring 9 is fixed by a L-type cushion block and the second gland 5.Second rotating ring 8 and
Two stationary rings, 9 dynamic sealing coordinates, and the limit pads 7 axial limitings on axle sleeve 1, and the first spring 10 is socketed with outside the bellows 7,
The both ends of first spring 10 end face with two steps of 7 outer wall of line pipe respectively.
It is additionally provided with radially distributed at least one inlet and liquid outlet on first gland 3, the inlet and goes out
Liquid mouth is connected to the cavity that the first gland 3, the second gland 5 and axle sleeve 1 are formed, it is described with the first rotating ring 2 and the first stationary ring 4 it is close
Cover and the second rotating ring 8 are in contact with the sealing surface of the second stationary ring 9 with cavity.First spring 10 and second spring 13 simultaneously
The flushing that can obtain coolant liquid avoids failing.
The elastic parts includes that edge is uniformly provided with the gasket 11 of several through-holes circumferentially arranged, across gasket 11
The bolt 12 and the second spring 13 being socketed on bolt 12 that through-hole is threadedly coupled with the first gland 3, the second spring 13
End face of the both ends respectively with 12 head of 5 end face of gasket and bolt offsets.It is brought out in gasket 5 quiet equipped with being bent and being embedded in first
In the groove of ring 4.
Claims (2)
1. a kind of centrifugal pump mechanical sealing device of silicon carbide, including the axle sleeve (1) and axle sleeve (1) that are socketed on axis circumferentially limit
The first rotating ring (2) of position, the first stationary ring (4) and elastic parts being located on the first gland (3)；First stationary ring (4) passes through
Elastic parts and the first rotating ring (2) dynamic sealing coordinate；It is characterized in that：It is further fixed on second on the outside of first gland (3)
Gland (5) is additionally provided with one group of auxiliary sealing structure between second gland (5) and axle sleeve (1)；The auxiliary sealing structure packet
It includes the bellows (6) being socketed on axle sleeve (1), the limit pad (7) for being located at bellows (6) one end, be located at bellows (6) other end
The second rotating ring (8), be located at second stationary ring (9) of the second gland (5) inner end；Second rotating ring (8) is dynamic with the second stationary ring (9)
Sealing cooperation, the limit pad (7) axial limiting on axle sleeve (1), a spring (10), institute are socketed with outside the bellows (6)
End face of the both ends of a spring (10) respectively with two steps of bellows (6) outer wall is stated to offset；On first gland (3) also
Equipped with radially distributed at least one inlet and liquid outlet, the inlet and liquid outlet and the first gland (3), the second gland
(5) cavity formed with axle sleeve (1) is connected to, the sealing surface and the second rotating ring with the first rotating ring (2) and the first stationary ring (4)
(8) it is in contact with cavity with the sealing surface of the second stationary ring (9).
2. centrifugal pump mechanical sealing device of silicon carbide according to claim 1, it is characterised in that：The elastic parts packet
Edge is included to be uniformly provided with the gasket (11) of several through-holes circumferentially arranged, pass through the through-hole and the first gland (3) of gasket (11)
The bolt (12) of threaded connection and the second spring (13) being socketed on bolt (12), the both ends difference of the second spring (13)
It offsets with the end face of gasket (11) end face and bolt (12) head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658316.5U CN207879679U (en) | 2017-12-04 | 2017-12-04 | Centrifugal pump mechanical sealing device of silicon carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658316.5U CN207879679U (en) | 2017-12-04 | 2017-12-04 | Centrifugal pump mechanical sealing device of silicon carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207879679U true CN207879679U (en) | 2018-09-18 |
Family
ID=63501947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721658316.5U Active CN207879679U (en) | 2017-12-04 | 2017-12-04 | Centrifugal pump mechanical sealing device of silicon carbide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207879679U (en) |
-
2017
- 2017-12-04 CN CN201721658316.5U patent/CN207879679U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |