CN209340507U - A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer - Google Patents
A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer Download PDFInfo
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- CN209340507U CN209340507U CN201821395174.2U CN201821395174U CN209340507U CN 209340507 U CN209340507 U CN 209340507U CN 201821395174 U CN201821395174 U CN 201821395174U CN 209340507 U CN209340507 U CN 209340507U
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- lip
- spiral
- low power
- rotary shaft
- support frame
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Abstract
A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer, include lip-type packing, support frame, gland, end cap and rotary shaft, lip-type packing includes metallic framework, garter springs and rubbery sealed body, and lip-type packing and support frame are bolted on gland.Spiral stream guidance slot is offered in the part of the surface of posterior lip angle lapping inclined-plane and the support frame cooperation of rubbery sealed body；Support frame cross sectional shape is L-type, is located at air side, offers air inlet on the circumferential surface abutted with rotary shaft, open up gas vent on gland and exposed aerial alien invasion；Air inlet and gas vent are respectively positioned in the fluting section on posterior lip angle lapping inclined-plane.Rotary shaft opens up a pair of oppositely oriented spiral very low power on the surface of lip-type packing air side, it is identical as rotary shaft rotation direction close to its rotation direction of the spiral very low power of lip, oppositely oriented far from its rotation direction of the spiral very low power of lip and rotary shaft, two beam spiral very low powers are gradually reduced along hand of helix groove depth and groove width.
Description
Technical field
The utility model relates to rubber-plastic sealing field, especially a kind of rotating shaft lip-shaped sealing device is pacified in air side
Support frame is filled, opens up spiral stream guidance slot, air inlet and venthole on support frame, matched axis surface opens up spiral very low power, can
For rotating machineries such as various compressors, gearbox, pumps.
Background technique
Lip packing (abbreviation oil sealing) is a kind of form with self sealing action, for preventing oil leak and prevention
Foreign matter enters the elastomeric seal of sealing area.The advantages that simple, cheap because of its structure, it is widely used in all kinds of rotations
In machinery.The basic structure of lip packing generally comprises the three parts such as rubbery sealed body, metallic framework and banding garter springs, according to
By rubbery sealed body lip portion and pairing shaft between interference fit and medium is sealed, and operating pressure compared with
Gao Shi is easy to make oil sealing waist excessive deformation, and lip and axis contact area is caused to increase, and frictional heat generation aggravation is caused to cause to seal
Failure.
According to statistics, caused by the failure of most of oil sealings is the caused high temperature of oil seal lip friction.Oil seal lip and rotation
Shaft surface contact friction generates a large amount of heat, accumulates in contact site, causes temperature at lip sharply to increase, accelerate lip
Aging is hardened and unstable wear.When oil sealing works normally, the lubricating oil film that oil seal lip has one layer very thin with rotation between centers will
Axis and oil seal lip are kept apart, and are not only avoided that axis and lip directly contact, and reduce frictional heat generation, moreover it is possible to effectively prevent lubricating oil
Leakage.When axis high speed rotation, oil seal lip heat amount is sharply increased, and oil pocket and oil seal lip temperature is caused to increase, excessively high
Temperature may cause oil sealing rubber material accelerated ageing and cause seal failure；The reduction of lubricating oil viscosity, oil film thickness can also be made
Reduce, when oil film thickness is less than critical film thickness, oil sealing will appear lubrication failure, further result in seal failure.
In actual use, often because of the suspended matter in the oil liquid adherency air of air side leakage, along with the height of axis
Speed rotation brings these impurity into sealed lip, forms abrasive wear, to aggravate the abrasion of sealed lip and sealing is caused to lose
Effect.Currently, being usually to find more high temperature resistant, anti abrasive oil for the excessively high solution for causing failure of oil seal lip temperature
Closure material, and optimization lip seal configuration increase dustproof lip and oil sealing are made to adapt to higher lip temperature and abrasive wear situation,
But the lip high temperature occurred in use and impurity adhesion wear problem are not can avoid.
Notification number CN1508437A discloses a kind of easy to operate, low-cost wear-resisting knot of compressor crank shaft lip packing
Structure.The patent is by installing a wear sleeve in compressor crank shaft and the adhesion of lip packing contact zone, though lip shape can be reduced
Friction between sealing and compressor crank shaft prevents crankshaft wear, reduces maintenance cost.But the installation leakproofness of sleeve can not protect
Card, and in the presence of the suspended matter that can not be reduced lip packing lip frictional heat and be adhered in the air of lip, avoid lip height
The defect of temperature and impurity adhesion wear.
Summary of the invention
The utility model will overcome the lip temperature occurred in existing lip packing use process excessively high and impurity adheres to out
The shortcomings that existing abrasive wear, propose that a kind of structure is simple, can actively accelerate lip heat dissipation, reduce that impurity adherency enters lip can
The wear-resisting type rotating shaft lip-shaped sealing device of enhanced heat exchange.
The utility model is to be achieved through the following technical solutions:
A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer includes lip-type packing 4, support frame 3, pressure
Lid 2, end cap 1 and rotary shaft 5, the lip-type packing 4 include metallic framework 41, garter springs 42 and rubbery sealed body 43；Institute
41 side of metallic framework is stated as oily side, the other side is air side；The lip-type packing 4 and support frame 3 are connected by bolt 21
It is fixed on gland 2；Spiral shell is offered in the part of the surface that the posterior lip angle lapping inclined-plane and support frame 3 of the rubbery sealed body 43 cooperate
Revolve diversion trench 31；3 cross sectional shape of support frame as described above is L-type, is located at air side, opens on the ring inner peripheral surface abutted with rotary shaft 5
Equipped with air inlet 32, gas vent 33, air inlet 32 and gas vent are offered on gland 2 and exposed aerial alien invasion
33 are respectively positioned in the fluting section on 43 posterior lip angle lapping inclined-plane of rubbery sealed body；The gland 2 is fastened on end by screw 11
On lid 1；The rotary shaft 5 offers a pair of the first oppositely oriented spiral on the surface of 4 air side of lip-type packing
Very low power 51 and the second spiral very low power 52, wherein close to first its rotation direction of spiral very low power 51 and 5 rotation direction of rotary shaft of lip
Identical, second its rotation direction of spiral very low power 52 and rotary shaft 5 far from lip are oppositely oriented, 51 He of the first spiral very low power
Second spiral very low power 52 is gradually reduced along its groove depth of hand of helix and groove width.
Further, the orifice shapes of the air inlet 32 and gas vent 33 are round hole, and diameter is set to dinWith
dout；The dinAnd doutSize it is related with shaft diameter D, relationship is between three: dout=0.6~0.8din, din=0.03
~0.1D.
Further, spiral is offered simultaneously on support frame as described above and the matching surface of lip inclined surface after rubbery sealed body 43
Diversion trench 31, the rotation direction and rotary shaft 5 of spiral stream guidance slot 31 are oppositely oriented.
Further, the cross sectional shape of the spiral very low power 51,52 and spiral stream guidance slot 31 be rectangle, it is triangle, trapezoidal
With it is one of arc-shaped.
Working principle of the utility model is:
The utility model proposes a kind of spiral very low power by rotating shaft surface and support frame and lip packing rubber are close
The spiral stream guidance slot cooperated between envelope body is mating, and guidance gas flowing accelerates to reduce lip temperature and reduces impurity adhesion wear
Can forced-convection heat transfer wear-resisting type rotary shaft lip seal device, specifically describe are as follows: in rotary shaft close to lip packing
Air shaft surface at lip axially opens up a pair of of spiral very low power, and the spiral very low power rotation direction is opposite, along helix side
It is gradually reduced to its groove depth and groove width；Support frame is installed in lip packing air side, support frame as described above cross sectional shape is L-type,
Positioned at air side, cooperation offers spiral in the part of the surface of the posterior lip angle lapping inclined-plane cooperation of support frame as described above and rubbery sealed body
Diversion trench；Air inlet is offered on the ring inner peripheral surface that support frame and rotary shaft above a pair of of spiral very low power intersection abut
Hole offers gas vent on gland and exposed aerial alien invasion.When oil sealing works normally, hydraulic oil is acted on
In lip packing, rubbery sealed body is made to be adjacent to support frame, air inlet, spiral stream guidance slot and venthole is made to form closed channel,
When rotary shaft high speed rotation, axis surface hot-air at the first spiral very low power disturbance lip of lip side drives hot-air
It being moved to atmospheric side, the reversed second spiral very low power disturbance outside cold air far from lip moves it to oil seal lip side,
Promote two strands of air to assemble in groove intersection to air inlet and be moved into spiral stream guidance slot, air flows in spiral stream guidance slot
It is dynamic, it takes away lip and is conducted through the heat come, therefore the temperature rise of lip can be effectively reduced；In addition, axis surface at the lip
Spiral very low power, can accommodate the impurity of adherency, and the air-flow of disturbance is followed to move to far from the atmospheric side of lip, avoid impurity into
Enter lip to cause to wear.
The utility model, which has the advantage that, to be mainly manifested in:
The support frame for offering spiral stream guidance slot with rubbery sealed body waist contact side in the installation of lip packing air side, matches
Air shaft surface of the rotary shaft of set at lip packing lip axially opens up a pair of of spiral very low power, makes the heat at lip
Air moves out and cool ambient air is moved to diversion trench, seals progress heat with lip and exchanges, reduces the temperature rise of lip, lean on simultaneously
The spiral very low power on the axis surface at nearly lip can accommodate the impurity of cleaning adherency, prevent impurity from entering lip and cause to wear, have
Effect extends the service life of lip envelope.
Detailed description of the invention
Fig. 1 is the wear-resisting type rotating shaft lip-shaped sealing apparatus structure schematic diagram of forced-convection heat transfer.
Fig. 2 is the support frame structure diagram of the utility model.
Fig. 3 is the structural schematic diagram of the rotary shaft spiral very low power of the utility model.
Specific embodiment
The technical solution of the utility model is described in detail with reference to the accompanying drawing.
Shown in referring to FIG. 1, FIG. 2 and FIG. 3, in which:
1- end cap；2- gland；3- support frame；4- lip-type packing；5- rotary shaft；11- screw；21- bolt；31- spiral
Diversion trench；32- air inlet；33- gas vent；41- metallic framework；42- garter springs；43- rubbery sealed body；51,52- spiral is micro-
Groove.
A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer includes lip-type packing 4, support frame 3, pressure
Lid 2, end cap 1 and rotary shaft 5, the lip-type packing 4 include metallic framework 41, garter springs 42 and rubbery sealed body 43；Institute
41 side of metallic framework is stated as oily side, the other side is air side；The lip-type packing 4 and support frame 3 are connected by bolt 21
It is fixed on gland 2 together；It is opened in the part of the surface that the posterior lip angle lapping inclined-plane of the rubbery sealed body 43 cooperates with support frame 3
Equipped with spiral stream guidance slot 31；3 cross sectional shape of support frame as described above is L-type, is located at air side, the ring inner periphery abutted with rotary shaft 5
Air inlet 32 is offered on face, and gas vent 33,32 He of air inlet are offered on gland 2 and exposed aerial alien invasion
Gas vent 33 is respectively positioned in the fluting section on 43 posterior lip angle lapping inclined-plane of rubbery sealed body；The gland 2 is fixed on by screw 11
On end cap 1；The rotary shaft 5 offers a pair of the first oppositely oriented spiral shell on the surface of 4 air side of lip-type packing
Very low power 51 and the second spiral very low power 52 are revolved, wherein first its rotation direction of spiral very low power 51 and rotary shaft 5 close to lip are revolved
To identical, second its rotation direction of spiral very low power 52 and rotary shaft 5 far from lip are oppositely oriented, the first spiral very low power 51
It is gradually reduced with the second spiral very low power 52 along its groove depth of hand of helix and groove width.
The orifice shapes of the air inlet 32 and gas vent 33 are circular orifice, and diameter is set to dinAnd dout；Institute
State dinAnd doutSize it is related with shaft diameter D, relationship is between three: dout=0.6~0.8din, din=0.03~
0.1D。
What support frame as described above 3 and 43 posterior lip angle lapping inclined-plane of rubbery sealed body cooperated offers spiral stream guidance slot simultaneously on the surface
31, the rotation direction and rotary shaft 5 of the spiral stream guidance slot 31 are oppositely oriented
The cross sectional shape of the first spiral very low power 51, the second spiral very low power 5152 and spiral stream guidance slot 31 is square
It is shape, triangle, trapezoidal and one of arc-shaped.Close to lip side the first spiral very low power 51 disturbance lip at hot-air to
It being moved far from lip atmospheric side, the second spiral very low power 52 disturbance outside cold air far from lip is moved to oil seal lip side,
The two crosses aggregation into spiral stream guidance slot 31 at air inlet 32, therefore in the first spiral of support frame 3 and 5 surface of rotary shaft
The conduction of lip heat will be accelerated to exchange under the collective effect of very low power 51 and the second spiral very low power 52.
In the present embodiment, in the higher situation of pressure, meeting excessive deformation causes lip and rotary shaft contact surface for lip packing
Product increases, and causes frictional heat generation to be aggravated, causes to fail.By installing support frame in oil sealing air side, oil sealing excessive deformation is prevented
While, accelerate the heat convection of air at lip, effectively slows down lip temperature rise, while the spiral very low power at lip can hold
The impurity that cleaning of receiving adheres to, prevents impurity from entering lip and causes to wear, and effectively extends the service life of oil sealing.
Content described in this specification embodiment is only an enumeration of the implementation forms of the utility model concept, the utility model
Protection scope should not be construed as being limited to the specific forms stated in the embodiments, the protection scope of the utility model also includes
Those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.
Claims (4)
1. a kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer, it is characterised in that: include lip-type packing
(4), support frame (3), gland (2), end cap (1) and rotary shaft (5), the lip-type packing (4) includes metallic framework (41), tight
Bind round spring (42) and rubbery sealed body (43)；Metallic framework (41) side is oily side, and the other side is air side；The lip shape
Sealing ring (4) and support frame (3) are fastened on gland (2) by bolt (21)；The posterior lip of the rubbery sealed body (43)
Spiral stream guidance slot (31) are offered on angle lapping inclined-plane and the surface of support frame (3) cooperation；Support frame as described above (3) cross sectional shape is L
Type is located at air side, offers air inlet (32) on the ring inner peripheral surface abutted with rotary shaft (5), against gland (2) and exposed
It is offered on aerial alien invasion gas vent (33), air inlet (32) and gas vent (33) are respectively positioned on rubbery sealed body (43)
In the fluting section on posterior lip angle lapping inclined-plane；The gland (2) is fixed on end cap (1) by screw (11)；The rotary shaft (5)
A pair of oppositely oriented the first spiral very low power (51) and second is offered on the surface of lip-type packing (4) air side
Spiral very low power (52), wherein first spiral very low power (51) its rotation direction close to lip is identical as rotary shaft (5) rotation direction, it is separate
Second spiral very low power (52) its rotation direction and rotary shaft (5) of lip are oppositely oriented, the first spiral very low power (51) and
Second spiral very low power (52) is gradually reduced along its groove depth of hand of helix and groove width.
2. a kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer according to claim 1, feature exist
In: the orifice shapes of the air inlet (32) and gas vent (33) are circular orifice, and diameter is set to dinAnd dout；Institute
State dinAnd doutSize it is related with shaft diameter D, relationship is between three: dout=0.6~0.8din, din=0.03~
0.1D。
3. a kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer according to claim 2, feature exist
In: spiral stream guidance slot is offered on the surface of support frame as described above (3) and the cooperation of rubbery sealed body (43) posterior lip angle lapping inclined-plane, it is described
The rotation direction of spiral stream guidance slot and the spiral stream guidance slot (31) on the rubbery sealed body posterior lip angle lapping inclined-plane are oppositely oriented.
4. a kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer according to claim 3, feature exist
In: the first spiral very low power (51), the second spiral very low power (52), spiral stream guidance slot (31) and and the rubbery sealed body
(43) cross sectional shape of spiral stream guidance slot is opened up on the surface of posterior lip angle lapping inclined-plane cooperation is rectangle, triangle, trapezoidal and circular arc
One of shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395174.2U CN209340507U (en) | 2018-08-28 | 2018-08-28 | A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395174.2U CN209340507U (en) | 2018-08-28 | 2018-08-28 | A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209340507U true CN209340507U (en) | 2019-09-03 |
Family
ID=67744578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821395174.2U Withdrawn - After Issue CN209340507U (en) | 2018-08-28 | 2018-08-28 | A kind of wear-resisting type rotating shaft lip-shaped sealing device of forced-convection heat transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209340507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058463A (en) * | 2018-08-28 | 2018-12-21 | 浙江工业大学 | A kind of wear-resisting type rotary shaft lip seal device of forced-convection heat transfer |
-
2018
- 2018-08-28 CN CN201821395174.2U patent/CN209340507U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058463A (en) * | 2018-08-28 | 2018-12-21 | 浙江工业大学 | A kind of wear-resisting type rotary shaft lip seal device of forced-convection heat transfer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190903 Effective date of abandoning: 20191224 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190903 Effective date of abandoning: 20191224 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |