CN207961522U - A kind of sealing structure of pump shaft set and between centers - Google Patents
A kind of sealing structure of pump shaft set and between centers Download PDFInfo
- Publication number
- CN207961522U CN207961522U CN201820327315.0U CN201820327315U CN207961522U CN 207961522 U CN207961522 U CN 207961522U CN 201820327315 U CN201820327315 U CN 201820327315U CN 207961522 U CN207961522 U CN 207961522U
- Authority
- CN
- China
- Prior art keywords
- sealing
- seal ring
- drive sleeve
- auxiliary seal
- gradient edge
- 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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- Sealing Devices (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model is related to technical fields of mechanical processing, more particularly to a kind of sealing structure of pump shaft set and between centers, including bolt, axis, axle sleeve, auxiliary seal ring, it further include drive sleeve, auxiliary seal ring is compression type sealing ring, material is solid flexible graphite, the side that cross-sectional shapes are bonded axle sleeve is straight flange, the other side is with gradient edge sealing, gradient edge sealing is two groups, between be integrated the groove-like buffer strip of connection, the one end being connect with drive sleeve offers locking slot, protrusion of the drive sleeve corresponding position due to locking groove shape cooperation.The utility model gradient edge sealing plays the role of being sustained pressure, and mating groove shape buffer strip can buffer abrupt pressure in a short time, uniformly dissipates power, and gradient edge sealing is deformed by external force, can fill gap, further strengthen sealing.One end that auxiliary seal ring is connect with drive sleeve offers locking slot, can be by auxiliary seal ring and drive sleeve clamping, and constant stress squeezes the two relative position, avoiding misplacing influences sealing.
Description
Technical field
The utility model is related to technical field of mechanical processing, more particularly to a kind of sealing structure of pump shaft set and between centers.
Background technology
Mechanical seal for pump is after the end face of the ring of relative motion mutually fits, and the small axial gap performance of generation is close
A kind of device of envelope effect.General mechanical seal includes four components such as rotating ring, stationary ring, clamping element, sealing element, machine
The effect of tool sealing can allow pump in the state of static, keep the fitting between its end face, this allows for the medium of sealing not
Leakage is will produce, and avoids the seal face that impurity enters machinery.Equally, mechanical seal is to hairs such as the vibrations of centrifugal pump
Wave certain pooling feature.Mechanical seal is not an isolated parts during pump operation, but with pump its
What his parts common combination operated together.Mechanical seal for pump type is various, and model is different, but leakage point mainly has：Axis
The failure for being sealed into auxiliary seal ring of set and between centers；The failure of assembling has chip off-falling, breach, damages, crimping and distortion；Non- dress
Failure with property has deformation, hardening, rupture and rotten, the finally appearance in the form of dielectric leakage；Axle sleeve leaks, then is sleeve sealing
It is not compacted when circle assembly or decrement is inadequate or damages.Therefore, this just to mechanical seal, more stringent requirements are proposed.
Common axis is sealed with shaft room.The material of sealing ring is not right, and wear-resisting, corrosion-resistant, heatproof, anti-aging property are too poor,
So that deformation, hardening, rupture, dissolving etc. occurs to early.The axis or axle sleeve for installing sealing ring, on the surface that O-ring seal promotes
Jagged, chamfering is rough or rounding of angle is not big enough.O-ring seal occurs chip off-falling, breach, breaks, crimping or torsional deformation.All
The regular leakage that pump machine can be caused to seal.To consider to solve the problems, such as 3 in the design of Sealing Structure of axle sleeve and between centers:(1)
Make radial compacting force uniformly and consistent with leak pressure rule as possible, so that axle sleeve pressure-bearing surface is pressurized uniform, to make axle sleeve wear
It is small and uniform.(2) make the sealing ring in sealing structure that there is compensation ability, enough lubricity and elasticity.(3) what is sealed fills out
Enclasping force should be uniformly distributed material in an axial direction
Utility model content
In order to solve the above-mentioned technical problem, the utility model discloses a kind of sealing structures of pump shaft set and between centers.
Specific technical solution is as follows：
A kind of sealing structure of pump shaft set and between centers, including bolt, axis, axle sleeve, auxiliary seal ring, further include transmission
Set, the auxiliary seal ring are compression type sealing ring, and material is solid flexible graphite, and the side that cross-sectional shapes are bonded axle sleeve is straight
Side, the other side are with gradient edge sealing, and gradient edge sealing is two groups, between be integrated the groove-like buffer strip of connection, with drive sleeve
One end of connection offers locking slot, and drive sleeve corresponding position has the protrusion with locking groove shape cooperation.
The gradient edge sealing is three ranks, and the ratio between radial distance and axial distance are 1.5:1.
The outer circle of the axle sleeve and the gap of auxiliary seal ring are 0.2mm.
Compared with prior art, the beneficial effects of the utility model are as follows：
The utility model does auxiliary seal ring with flexible graphite packing, and axle sleeve makes overall structure have with this combine of drive sleeve
Have that axially loaded is more uniform, the side of the cross-sectional shapes fitting axle sleeve of auxiliary seal ring is straight flange, and the other side is to be sealed with gradient
Side, gradient edge sealing are two groups, between be integrated the groove-like buffer strip of connection, gradient edge sealing can play the work of sustained release pressure
With mating groove shape buffer strip can buffer abrupt pressure in a short time so that auxiliary seal ring quickly adjusts good position,
Uniformly scattered power, gradient edge sealing are deformed by external force, can fill gap, further strengthen sealing.Soft graphite has resilience good,
Many advantages, such as friction coefficient is low, and outer layer intensity is high, antiscour, is widely used in various sealing occasions.Compression type sealing ring is close
Envelope is to prevent internal flow from releasing because solid flexible graphite is fitted closely with rotary shaft, by drive sleeve by solid flexible graphite
Filler is pressed on axis, and solid flexible graphite packing relies on gland axial compression, is generated radial deformation, is filled up gap, filler exists
When deformation, the radial load generated by radial deformation is close to shaft and sleeve lining surface, realizes sealing.Auxiliary seal ring and biography
One end of dynamic set connection offers locking slot, and drive sleeve corresponding position can will be assisted due to the protrusion of locking groove shape cooperation
Sealing ring and drive sleeve clamping, both timely stress extruding relative position is also constant, and dislocation is avoided to influence sealing.
Description of the drawings
Fig. 1 is the sealed structural representation of the utility model pump shaft set and between centers；
Fig. 2 is the utility model auxiliary seal ring structural schematic diagram.
In figure, 1-bolt；2-axis；3-drive sleeves；4-auxiliary seal rings；5-axle sleeves；6-locking slots；7-bufferings
Band；8-gradient edge sealing.
Specific implementation mode
The utility model is further described below in conjunction with the accompanying drawings, but the scope of protection of the utility model is not limited only to
Attached drawing.
Fig. 1 is the sealed structural representation of the utility model pump shaft set and between centers, and Fig. 2 is the utility model auxiliary seal
Coil structures schematic diagram, as shown, pump shaft set and the sealing structure of between centers include bolt 1, axis 2, axle sleeve 5, auxiliary seal ring
4, further include drive sleeve 3, auxiliary seal ring 4 is compression type sealing ring, and material is solid flexible graphite, and cross-sectional shapes are bonded axle sleeve
5 side is straight flange, and the other side is with gradient edge sealing 8, and gradient edge sealing 8 is two groups, between be integrated connection groove-like it is slow
Band 7 is rushed, the one end being connect with drive sleeve 3 offers locking slot 6, and drive sleeve corresponding position is prominent since 6 shape of locking slot coordinates
It rises.Gradient edge sealing 8 is three ranks, and the ratio between radial distance and axial distance are 1.5:1.Between the outer circle and auxiliary seal ring 4 of axle sleeve 5
Gap is 0.2mm.
Claims (3)
1. a kind of sealing structure of pump shaft set and between centers, including bolt, axis, axle sleeve, auxiliary seal ring, it is characterised in that：Also
Including drive sleeve, the auxiliary seal ring is compression type sealing ring, and material is solid flexible graphite, and cross-sectional shapes are bonded axle sleeve
Side is straight flange, and the other side is with gradient edge sealing, and gradient edge sealing is two groups, between be integrated the groove-like buffer strip of connection,
The one end being connect with drive sleeve offers locking slot, and drive sleeve corresponding position has the protrusion with locking groove shape cooperation.
2. the sealing structure of pump shaft set and between centers according to claim 1, it is characterised in that：The gradient edge sealing is three
Rank, the ratio between radial distance and axial distance are 1.5:1.
3. the sealing structure of pump shaft set and between centers according to claim 1, it is characterised in that：The outer circle of the axle sleeve with
The gap of auxiliary seal ring is 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820327315.0U CN207961522U (en) | 2018-03-10 | 2018-03-10 | A kind of sealing structure of pump shaft set and between centers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820327315.0U CN207961522U (en) | 2018-03-10 | 2018-03-10 | A kind of sealing structure of pump shaft set and between centers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961522U true CN207961522U (en) | 2018-10-12 |
Family
ID=63742442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820327315.0U Expired - Fee Related CN207961522U (en) | 2018-03-10 | 2018-03-10 | A kind of sealing structure of pump shaft set and between centers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024181967A1 (en) * | 2023-02-27 | 2024-09-06 | Halliburton Energy Services, Inc. | Housing joints with compression loaded graphite seals for downhole esp use |
-
2018
- 2018-03-10 CN CN201820327315.0U patent/CN207961522U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024181967A1 (en) * | 2023-02-27 | 2024-09-06 | Halliburton Energy Services, Inc. | Housing joints with compression loaded graphite seals for downhole esp use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |