CN108506350A - A kind of sealed bearing assembly and bearing housing - Google Patents
A kind of sealed bearing assembly and bearing housing Download PDFInfo
- Publication number
- CN108506350A CN108506350A CN201810255509.9A CN201810255509A CN108506350A CN 108506350 A CN108506350 A CN 108506350A CN 201810255509 A CN201810255509 A CN 201810255509A CN 108506350 A CN108506350 A CN 108506350A
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- Prior art keywords
- bearing
- ring
- face
- ring seal
- stationary ring
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- 210000004907 gland Anatomy 0.000 claims abstract description 35
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
Abstract
A kind of sealed bearing assembly of present invention offer and bearing housing.The component includes：Bearing, rotating ring, stationary ring, elastic element and bearing gland；Rotating ring has the ring seal end face for offering spiral dynamic pressure groove；Bearing gland is sheathed on outside rotating ring and driving sleeve and closes to form accommodating space with bearing cap, and there is the first gap, the one end of bearing gland far from bearing to be convexly equipped with interconnecting piece to the direction close to bearing between rotating ring and bearing gland；One end of stationary ring has stationary ring seal face, and stationary ring seal face is opposite with ring seal end face, and the section notches of spiral dynamic pressure groove are blocked in orthographic projection of the stationary ring seal face on ring seal end face；Rotating ring remains static, and stationary ring seal face is fitted closely with ring seal end face；Rotating ring is operated with preset rotation speed, and stationary ring seal face and ring seal end face are opened under the fluid shearing force effect at spiral dynamic pressure groove, to provide the channel that air dielectric flows to the first gap.The present invention can preferably ensure the sealing performance of bearing housing.
Description
Technical field
The present invention relates to technical field of engineering machinery more particularly to a kind of sealed bearing assemblies and bearing housing.
Background technology
In technical field of engineering machinery, being widely used for sealing is general, while the requirement to sealing is also higher and higher, especially
It is for bearing housing, and working condition is harsh, and sealing leak amount is big.Therefore, how to ensure the sealing performance pair of bearing housing
It is a urgent problem to be solved for those skilled in the art.
Invention content
A kind of sealed bearing assembly of offer of the embodiment of the present invention and bearing housing, to ensure the sealing performance of bearing housing.
On the one hand, the embodiment of the present invention provides a kind of sealed bearing assembly, is used for bearing housing, and the bearing housing includes transmission
Axis and fixing sleeve are set to the driving sleeve outside the transmission shaft, and the sealed bearing assembly includes：Bearing, rotating ring, stationary ring, elasticity
Element and bearing gland；Wherein,
The bearing and the equal fixing sleeve of the rotating ring are set to outside the transmission shaft, and the rotating ring is located in the bearing and institute
Between stating driving sleeve, also, the rotating ring has ring seal end face, and spiral dynamic pressure is offered on the ring seal end face
Slot；
The bearing gland is sheathed on outside the rotating ring and the driving sleeve and closes to form accommodating sky with the bearing cap
Between, there is the first gap, the bearing gland is far from the axis between the outer wall of the rotating ring and the inner wall of the bearing gland
The one end held is convexly equipped with cricoid interconnecting piece to the direction close to the bearing；
The stationary ring and the elastic element are respectively positioned in the accommodating space and are sheathed on outside the interconnecting piece, described quiet
One end of ring has stationary ring seal face, and the stationary ring seal face is opposite with the ring seal end face, the stationary ring sealing
The section notches of the spiral dynamic pressure groove, the elastic element sandwiched are blocked in orthographic projection of the end face on the ring seal end face
Between the one end of the other end and the bearing gland far from the bearing of the stationary ring；
Also, the rotating ring remains static, then the stationary ring seal face is closely pasted with the ring seal end face
It closes；The rotating ring is operated with preset rotation speed, then the stationary ring seal face and the ring seal end face are in the spiral dynamic pressure
It is opened under fluid shearing force effect at slot, to provide the channel that air dielectric flows to first gap, to by described
Air dielectric is sealed the oil gas medium of first gap location.
Optionally, the preset rotation speed is greater than or equal to 15000 turns per minute.
Optionally, which further includes：Throw-out collar；Wherein, the throw-out collar is sheathed on outside interconnecting piece and is located in
Between the stationary ring and the elastic element.
Optionally, which further includes：O-ring；Wherein, the inner wall of the stationary ring offers the first clamping
Slot, the O-ring are sheathed on outside the interconnecting piece and are connected in first buckling groove.
Optionally, which further includes：Retainer ring；Wherein,
The inner wall of the bearing gland offers the second buckling groove, and the retainer ring is sheathed on outside the stationary ring and is connected in institute
It states in the second buckling groove；
Retainer is set on the stationary ring, the retainer ring for retainer described in block, with limit the stationary ring with it is described
The relative maximum displacement of the one end of bearing gland far from the bearing.
Optionally, the quantity of the spiral dynamic pressure groove is at least two, and the spiral dynamic pressure groove is at the ring seal end
It is uniformly arranged on face.
Optionally, the spiral dynamic pressure groove is logarithmic spiral slot.
Optionally, the parameter of the logarithmic spiral slot includes at least one of following：
Slot number is more than or equal to 6, and is less than or equal to 12；
Groove depth is more than or equal to 4 microns, and is less than or equal to 6 microns；
Slot dam ratio is more than or equal to 0.6, and is less than or equal to 0.7；
Helical angle is more than or equal to 15 degree, and is less than or equal to 20 degree；
Slot weir ratio is more than or equal to 0.45, and is less than or equal to 0.55.
Optionally, the elastic element is waveform spring, bellows springs or compressed spring.
On the other hand, the embodiment of the present invention also provides a kind of bearing housing, including above-mentioned sealed bearing assembly.
As can be seen that by regarding bearing gland as stationary seat, stationary ring, elastic element etc. may be implemented in the embodiment of the present invention
Reliable installation in bearing housing, while the axial space size of bearing housing can be reduced as far as possible.In addition, static in rotating ring
In the case of, the ring seal end face of rotating ring and the stationary ring seal face of stationary ring fit closely, and are may be implemented in this way to oil gas medium
Sealing；In the case where rotating ring runs at high speed, the ring seal end face of rotating ring and the stationary ring seal face of stationary ring are opened, in this way
The sealing to oil gas medium can be realized by way of sealing gland liquid.Therefore, no matter static or in the case of run at high speed,
By the cooperation of rotating ring and stationary ring, the embodiment of the present invention can be effectively prevented the leakage of oil gas medium, to preferably protect
Demonstrate,prove the sealing performance of bearing housing.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of bearing seal assembly provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of rotating ring in bearing seal assembly provided in an embodiment of the present invention.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Sealed bearing assembly provided in an embodiment of the present invention is illustrated first below.
Referring to Fig. 1, the structural schematic diagram of sealed bearing assembly provided in an embodiment of the present invention is shown in figure.Such as Fig. 1 institutes
Show, which is used for bearing housing, and bearing housing includes the driving sleeve of transmission shaft 1 and fixing sleeve outside transmission shaft 1
2.It should be noted that bearing housing can be provided with bearing bore, which can be placed in bearing bore.The present invention is real
It applies in example, which includes：Bearing 3, rotating ring 4, stationary ring 5 (stationary ring 5 is as compensation ring), elastic element 6 and bearing
Gland 7.
Wherein, bearing 3 can be ball bearing, cylinder roller bearing, taper roll bearing or other kinds of bearing, bullet
Property element 6 can be waveform spring, bellows springs, compressed spring or other kinds of elastic element, herein no longer one by one
It enumerates.
In the embodiment of the present invention, bearing 3 and 4 equal fixing sleeve of rotating ring are set to outside transmission shaft 1, and rotating ring 4 is located in bearing 3 and passes
Between moving axis set 2, also, rotating ring 4 has ring seal end face 41 (right end for being particularly located at rotating ring 4 in Fig. 1), as shown in Fig. 2,
Spiral dynamic pressure groove 42 is offered on ring seal end face 41.It should be pointed out that since rotating ring 4 is located in bearing 3 and transmission shaft
Between set 2, it can be reliably achieved the axially position of rotating ring 4 in this way.
When it is implemented, spiral dynamic pressure groove 42 can be logarithmic spiral slot.Optionally, the parameter of logarithmic spiral slot include with
It is at least one of lower：
Slot number is more than or equal to 6, and is less than or equal to 12；
Groove depth is more than or equal to 4 microns, and is less than or equal to 6 microns；
Slot dam ratio is more than or equal to 0.6, and is less than or equal to 0.7；
Helical angle is more than or equal to 15 degree, and is less than or equal to 20 degree；
Slot weir ratio is more than or equal to 0.45, and is less than or equal to 0.55.
Specifically, the slot number of logarithmic spiral slot can be 6,8 or 12, and the groove depth of logarithmic spiral slot can be 4
Micron, 5 microns either 6 microns of logarithmic spiral slots slot dam ratio can be 0.6,0.65 or 0.7, the spiral of logarithmic spiral slot
Angle can be 15 degree, the slot weir ratio of 18 degree of either 20 degree of logarithmic spiral slots can be 0.45,0.50 or 0.55, certainly, logarithm
The slot number of helicla flute can also be between 6 and 12 any other number, the groove depth of logarithmic spiral slot can also be 4 microns
And any other depth between 6 microns, the slot dam of logarithmic spiral slot is than that can also be any other number between 0.6 and 0.7
Value, any other angle that the helical angle of logarithmic spiral slot can also be between 15 degree and 20 degree, the slot weir ratio of logarithmic spiral slot
It can also be any other numerical value between 0.45 to 0.55, can specifically be determined according to actual conditions, the embodiment of the present invention
Than the specific value of, helical angle and slot weir ratio any restriction is not done to the number of logarithmic spiral slot, groove depth, slot dam.
It should be pointed out that when the quantity of spiral dynamic pressure groove 42 is at least two, spiral dynamic pressure groove 42 is at ring seal end
It can be uniformly arranged on face 41, to facilitate the processing of spiral dynamic pressure groove 42.
Bearing gland 7, which is sheathed on outside rotating ring 4 and driving sleeve 2 and is closed with the lid of bearing 3, forms accommodating space 100, rotating ring 4
There is the first gap 200, the one end of bearing gland 7 far from bearing 3 is (shown in Fig. 1 between outer wall and the inner wall of bearing gland 7
Left end) to the direction close to bearing 3 it is convexly equipped with cricoid interconnecting piece 71.
Stationary ring 5 and elastic element 6 are respectively positioned in accommodating space 100 and are sheathed on outside interconnecting piece 71, one end (Fig. 1 of stationary ring 5
Shown in left end) there is stationary ring seal face 51, stationary ring seal face 51 and ring seal end face 41 are opposite, stationary ring sealed end
The section notches of spiral dynamic pressure groove 42 are blocked in orthographic projection of the face 51 on ring seal end face 41, and elastic element 6 is located in stationary ring 5
The one end (right end shown in Fig. 1) of the other end (right end shown in Fig. 1) and bearing gland 7 far from bearing 3 between.
As can be seen that in the embodiment of the present invention, bearing gland 7, can be in addition to playing the role of bearing gland itself
As the stationary seat for installing stationary ring 5, elastic element 6 etc..
Rotating ring 4 remains static, then stationary ring seal face 51 is fitted closely with ring seal end face 41；Rotating ring 4 is with pre-
If rotation speed operation, then under stationary ring seal face 51 and fluid shearing force effect of the ring seal end face 41 at spiral dynamic pressure groove 42
It opens, to provide the channel that air dielectric flows to the first gap 200, to pass through the oil at the first gap of air dielectric pair 200
Gas medium is sealed.
Wherein, preset rotation speed is greater than or equal to 15000 turns per minute.Specifically, preset rotation speed can be per minute 15000
Turn, 20000 turns per minute or 24000 turns per minute, certainly, the specific value of preset rotation speed is not limited to listed above
These three situations can specifically determine that the embodiment of the present invention does not do this any restriction according to actual conditions.It can easily be seen that
Under preset rotation speed, it is believed that rotating ring 4 is in the state that runs at high speed.
Optionally, which further includes：Throw-out collar 8；Wherein, throw-out collar 8 is sheathed on outside interconnecting piece 71 and is located in
Between stationary ring 5 and elastic element 6.It can easily be seen that due to the setting of throw-out collar 8, elastic element 6 will not be contacted directly with stationary ring 5, this
Sample can prevent the surface of stationary ring 5 to be damaged, to extend the service life of stationary ring 5.
Optionally, which further includes：O-ring 9；Wherein, the inner wall of stationary ring 5 offers the first buckling groove, O
Shape circle 9 is sheathed on outside interconnecting piece 71 and is connected in the first buckling groove.Due to the setting of O-ring 9, the embodiment of the present invention can be real
Existing sealing between stationary ring 5 and interconnecting piece 71.
Optionally, which further includes：Retainer ring 10；Wherein, the inner wall of bearing gland 7 offers the second clamping
Slot, retainer ring 10 are sheathed on outside stationary ring 5 and are connected in the second buckling groove；Retainer 52 is set on stationary ring 5, and retainer ring 10 is used for block
Retainer 52, to limit the relative maximum position of stationary ring 5 and the one end (right end shown in Fig. 1) of bearing gland 7 far from bearing 3
It moves.As can be seen that by the setting of retainer ring 10, the embodiment of the present invention can preferably realize the limit to stationary ring 5.
For the ease of those skilled in the art understand that this programme, with reference to Fig. 1, to sealing provided in an embodiment of the present invention
The assembling process and operation principle of bearing assembly illustrate.
When practical set, bearing 3, rotating ring 4 and driving sleeve 2 successively fixation first can be set in transmission shaft by operating personnel
It, will outside 1, and after elastic element 6, throw-out collar 8, O-ring 9 and stationary ring 5 are sheathed on successively outside the interconnecting piece 71 of bearing gland 7
Retainer ring 10 is connected in the first buckling groove of the inner wall of bearing gland 7, is finally closed bearing gland 7 with the lid of bearing 3 and be can be completed
The whole assembly of sealed bearing assembly.It can easily be seen that in the embodiment of the present invention, bearing gland 7 can be used as stationary seat.
After sealed bearing assembly assembles, rotating ring 4 remains static, and rotating ring 4 and the bearing inner race of bearing 3 paste
It closes, the ring seal end face 41 of rotating ring 4 is fitted closely with the stationary ring seal face 51 of stationary ring 5, in this way can be to the first gap 200
The oil gas medium at place is sealed, and area shown in Fig. 1 is leaked to by the first gap 200 to be effectively prevented from the oil gas medium
At the Q of domain, to ensure the sealing performance of bearing housing.Only due to orthographic projection of the stationary ring seal face 51 on ring seal end face 41
Block the section notches of spiral dynamic pressure groove 42, therefore, air dielectric can by ring seal end face 41 not by stationary ring sealed end
The notch position that face 51 is blocked enters in spiral dynamic pressure groove 42.
Later, in the case where transmission shaft 1 is run at high speed and (operated with preset rotation speed), rotating ring 4 can be high with transmission shaft 1
Speed operating, the centrifugal force that 4 high speed rotation of rotating ring generates can prevent the leakage of the oil gas medium at the first gap 200.In addition, due to
The high speed rotation of rotating ring 4, the spiral dynamic pressure groove 42 being arranged on ring seal end face 41 also can high speed rotation, at this moment, spiral dynamic pressure
Air dielectric in slot 42 can generate hydrodynamic shear under the action of spiral dynamic pressure groove 42, to make ring seal end face 41 with
Stationary ring seal face 51 is opened.
Due to the unlatching of ring seal end face 41 and stationary ring seal face 51, ring seal end face 41 and stationary ring seal face
51 end face frictional wear greatly reduces, and can effectively extend the service life of rotating ring 4 and stationary ring 5 in this way.Further, since dynamic
The unlatching of ring seal face 41 and stationary ring seal face 51 can be formed together between ring seal end face 41 and stationary ring seal face 51
Micron-sized fluid film, while air dielectric can be pumped at the first gap 200 by spiral dynamic pressure groove 42.Due to the first gap 200
Place is pumped to air dielectric, which can play barrier effect to oil gas medium, to prevent oil gas medium by between first
It is leaked at gap 200 at region Q shown in Fig. 1.As it can be seen that in the case where rotating ring 4 runs at high speed, the embodiment of the present invention can
The sealing that oil gas medium is realized by way of sealing gland liquid, to ensure the sealing performance of bearing housing.
As can be seen that by regarding bearing gland 7 as stationary seat, stationary ring 5, elastic element may be implemented in the embodiment of the present invention
The 6 equal reliable installations in bearing housing, while the axial space size of bearing housing can be reduced as far as possible.In addition, quiet in rotating ring 4
In the case of only, the ring seal end face 41 of rotating ring 4 and the stationary ring seal face 51 of stationary ring 5 fit closely, and may be implemented in this way
Sealing to oil gas medium；In the case where rotating ring 4 runs at high speed, the ring seal end face 41 of rotating ring 4 and the stationary ring of stationary ring 5 are close
Sealing end face 51 is opened, and can realize the sealing to oil gas medium by way of sealing gland liquid in this way.Therefore, no matter static or
In the case of running at high speed, by the cooperation of rotating ring 4 and stationary ring 5, the embodiment of the present invention can be effectively prevented oil gas medium
Leakage, to preferably ensure bearing housing sealing performance.
Bearing housing provided in an embodiment of the present invention is illustrated below.
The embodiment of the present invention also provides a kind of bearing housing, which includes above-mentioned sealed bearing assembly.Wherein, this is close
The specific implementation process of bearing assembly is sealed with reference to above description, the embodiment of the present invention does not do this any restriction.
Since sealed bearing assembly has above-mentioned technique effect, therefore the bearing housing with the sealed bearing assembly is also with phase
The technique effect answered, details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.Obviously,
Various changes and modifications can be made to the invention by those skilled in the art without departing from the spirit and scope of the present invention.This
Sample, if these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology, then this hair
It is bright to be also intended to include these modifications and variations.
Claims (10)
1. a kind of sealed bearing assembly, which is characterized in that be used for bearing housing, the bearing housing includes that transmission shaft and fixing sleeve are set to
Driving sleeve outside the transmission shaft, the sealed bearing assembly include：Bearing, rotating ring, stationary ring, elastic element and bearing pressure
Lid；Wherein,
The bearing and the equal fixing sleeve of the rotating ring are set to outside the transmission shaft, and the rotating ring is located in the bearing and the biography
Between moving axis set, also, the rotating ring has ring seal end face, and spiral dynamic pressure groove is offered on the ring seal end face；
The bearing gland is sheathed on outside the rotating ring and the driving sleeve and closes to form accommodating space with the bearing cap, institute
State between the outer wall of rotating ring and the inner wall of the bearing gland have the first gap, the bearing gland far from the bearing one
It holds to the direction close to the bearing and is convexly equipped with cricoid interconnecting piece；
The stationary ring and the elastic element are respectively positioned in the accommodating space and are sheathed on outside the interconnecting piece, the stationary ring
One end has stationary ring seal face, and the stationary ring seal face is opposite with the ring seal end face, the stationary ring seal face
The section notches of the spiral dynamic pressure groove are blocked in orthographic projection on the ring seal end face, and the elastic element is located in institute
Between the one end of the other end and the bearing gland far from the bearing for stating stationary ring；
Also, the rotating ring remains static, then the stationary ring seal face is fitted closely with the ring seal end face；Institute
It states rotating ring to operate with preset rotation speed, then the stationary ring seal face and the ring seal end face are at the spiral dynamic pressure groove
It is opened under fluid shearing force effect, to provide the channel that air dielectric flows to first gap, to be situated between by the air
The oil gas medium of first gap location of verifying is sealed.
2. sealed bearing assembly according to claim 1, which is characterized in that the preset rotation speed is greater than or equal to per minute
15000 turns.
3. sealed bearing assembly according to claim 1, which is characterized in that further include：Throw-out collar；Wherein, the throw-out collar set
Outside interconnecting piece and it is located between the stationary ring and the elastic element.
4. sealed bearing assembly according to claim 1, which is characterized in that further include：O-ring；Wherein, the stationary ring
Inner wall offers the first buckling groove, and the O-ring is sheathed on outside the interconnecting piece and is connected in first buckling groove.
5. sealed bearing assembly according to claim 1, which is characterized in that further include：Retainer ring；Wherein,
The inner wall of the bearing gland offers the second buckling groove, and it is outer and be connected in described that the retainer ring is sheathed on the stationary ring
In two buckling grooves；
Retainer is set on the stationary ring, and the retainer ring is for retainer described in block, to limit the stationary ring and the bearing
The relative maximum displacement of the one end of gland far from the bearing.
6. sealed bearing assembly according to claim 1, which is characterized in that the quantity of the spiral dynamic pressure groove is at least two
A, the spiral dynamic pressure groove is uniformly arranged on the ring seal end face.
7. sealed bearing assembly according to claim 1, which is characterized in that the spiral dynamic pressure groove is logarithmic spiral slot.
8. sealed bearing assembly according to claim 7, which is characterized in that the parameter of the logarithmic spiral slot includes following
At least one of：
Slot number is more than or equal to 6, and is less than or equal to 12；
Groove depth is more than or equal to 4 microns, and is less than or equal to 6 microns；
Slot dam ratio is more than or equal to 0.6, and is less than or equal to 0.7；
Helical angle is more than or equal to 15 degree, and is less than or equal to 20 degree；
Slot weir ratio is more than or equal to 0.45, and is less than or equal to 0.55.
9. such as sealed bearing assembly described in any item of the claim 1 to 8, which is characterized in that the elastic element is waveform
Spring, bellows springs or compressed spring.
10. a kind of bearing housing, which is characterized in that including the sealed bearing assembly as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810255509.9A CN108506350A (en) | 2018-03-27 | 2018-03-27 | A kind of sealed bearing assembly and bearing housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810255509.9A CN108506350A (en) | 2018-03-27 | 2018-03-27 | A kind of sealed bearing assembly and bearing housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506350A true CN108506350A (en) | 2018-09-07 |
Family
ID=63378646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810255509.9A Pending CN108506350A (en) | 2018-03-27 | 2018-03-27 | A kind of sealed bearing assembly and bearing housing |
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|---|---|
| CN (1) | CN108506350A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285218A (en) * | 2019-06-27 | 2019-09-27 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of perseverance elastic force plated film involute helicla flute extended life seal device |
| CN111711306A (en) * | 2020-08-24 | 2020-09-25 | 江苏嘉轩智能工业科技股份有限公司 | Explosion-proof structure of drum motor |
| CN112096879A (en) * | 2020-09-30 | 2020-12-18 | 北京化工大学 | Monitoring type dynamic pressure sealing device and method for monitoring opening and closing states of sealing end faces |
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| CN206708086U (en) * | 2017-04-19 | 2017-12-05 | 北京航天普霖科技有限公司 | A kind of pump stuffing box seal structure |
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| US5180173A (en) * | 1990-07-09 | 1993-01-19 | Ebara Corporation | Spiral groove face seal |
| CN102619742A (en) * | 2012-03-07 | 2012-08-01 | 大连华阳光大密封有限公司 | Dry gas sealing device for bidirectional rotary internal pressure pump |
| CN103486268A (en) * | 2013-09-15 | 2014-01-01 | 丹东克隆集团有限责任公司 | Mechanical dry gas sealing device for pumps |
| CN104455456A (en) * | 2014-11-05 | 2015-03-25 | 中国航空动力机械研究所 | Fluid power sealing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110285218A (en) * | 2019-06-27 | 2019-09-27 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of perseverance elastic force plated film involute helicla flute extended life seal device |
| CN111711306A (en) * | 2020-08-24 | 2020-09-25 | 江苏嘉轩智能工业科技股份有限公司 | Explosion-proof structure of drum motor |
| CN112096879A (en) * | 2020-09-30 | 2020-12-18 | 北京化工大学 | Monitoring type dynamic pressure sealing device and method for monitoring opening and closing states of sealing end faces |
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