CN110219989A - A kind of floating seal pair - Google Patents
A kind of floating seal pair Download PDFInfo
- Publication number
- CN110219989A CN110219989A CN201910639708.4A CN201910639708A CN110219989A CN 110219989 A CN110219989 A CN 110219989A CN 201910639708 A CN201910639708 A CN 201910639708A CN 110219989 A CN110219989 A CN 110219989A
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- Prior art keywords
- floating seal
- ring
- anchor ring
- dust
- anchor
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- 238000007667 floating Methods 0.000 title claims abstract description 129
- 239000004519 grease Substances 0.000 claims description 24
- 230000001050 lubricating effect Effects 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 23
- 238000002955 isolation Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 16
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 239000004744 fabric Substances 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 38
- 239000003344 environmental pollutant Substances 0.000 abstract description 9
- 231100000719 pollutant Toxicity 0.000 abstract description 9
- 238000005461 lubrication Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 12
- 238000005299 abrasion Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000005452 bending Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The application discloses a kind of floating seal pair, the floating seal ring being oppositely arranged including two.Bright band, i.e. contact wear-resistant seal anchor ring are set between the opposite end face of two floating seal rings, and the internal diameter of bright band is equal to the nominal bore diameter of floating seal ring.The bright band service life that technical solution provided by the present application can solve existing floating seal pair is short, and the pollutants such as external muddy water, sandy soil are easy to invade in sealing system, the problem of being unfavorable for the stable operation of lubrication, sealing oil film, accelerating the failure of floating seal secondary sealing.
Description
Technical field
This application involves technical field of sealing technology, in particular to a kind of floating seal pair.
Background technique
By a pair of opposing wear-resisting becket (that is: floating seal ring.Inventor is artificially by floating seal ring section
It is divided into sealing surface functional area and supporter functional area, two contacts being oppositely arranged are wear-resisting in sealing surface functional area
Sealing ring surface is known as bright band) and the movable sealing structure sub-assembly of a pair of of rubber seal composition be known as floating seal pair, be assemblied in
(rubber seal is extruded energy storage and is assemblied in supporter outer cone and floating sealing base inner cone for use in Special seal cavity (floating sealing base)
It combines in cavity).
The bright band service life of existing floating seal pair is short, and the pollutants such as external muddy water, sandy soil be easy to invade it is close
In envelope system, the problem of being unfavorable for the stable operation of lubrication, sealing oil film, accelerate the failure of floating seal secondary sealing.
Summary of the invention
This application provides a kind of floating seal pair, the bright band that floating seal pair can solve existing floating seal pair is used
Service life is short, and the pollutants such as external muddy water, sandy soil are easy to invade in sealing system, are unfavorable for lubrication, seal the steady of oil film
The problem of fixed movement, acceleration floating seal secondary sealing failure.
This application provides a kind of floating seal pair, the floating seal ring being oppositely arranged including two.Two floating seals
Bright band, i.e. contact wear-resistant seal anchor ring are set between the opposite end face of ring, and the internal diameter of bright band is equal to the public affairs of floating seal ring
Claim internal diameter.
In above scheme, a kind of floating seal pair is provided, floating seal pair can solve the bright band of existing floating seal pair
Service life is short, and the pollutants such as external muddy water, sandy soil are easy to invade in sealing system, and floating seal secondary sealing is accelerated to lose
The problem of effect.Wherein, inventors have found that secondary (the inventor's reference float grease seal professional standard JB/T8293- of existing floating seal
2014 discoveries) its bright band is proximate to nominal outside diameter, however, floating seal ring in order to accommodate rubber seal have to
Reducing sectional area to sacrifice its strength of materials is cost, and ring wall section is arranged to outer cone and floating sealing base inner conical at combining cavity,
After effect of the bright band by sealed pressure, the sealing surface functional area that material structural strength can be caused relatively low generates bending and answers
Become (close to nominal outside diameter end face bright band with the bending of sealing surface functional area moment of flexure direction caused by the sealed pressure and partially
Turn, meanwhile, the stress point of bright band is mobile to the geometric center of floating seal ring), reduce the forced area of bright band, increases than pressure
Greatly, abrasion aggravation.At this point, the two in the prior art sealing surface functional areas being oppositely arranged can be under the action of reaction force
It respectively bends, nominal outside diameter end is in the bifurcated deformation for being located remotely from each other shape, destroys oil film on bright band, is further exacerbated by
Abrasion and leakage, meanwhile, the pollutants such as external muddy water, sandy soil are easier to invade in sealing system, are unfavorable for lubrication, Seal Oil
The stable operation of film accelerates the seal failure of floating seal pair.
For this purpose, inventor is changed the structure of floating seal ring to solve the problems, such as that inventor has found: two floatings
Bright band, i.e. contact wear-resistant seal anchor ring are set between the opposite end face of sealing ring, but the internal diameter of bright band is equal to floating seal
The nominal bore diameter (bright band be arranged in sectional dimension is relatively large, the end face in the relatively high support function region of the strength of materials) of ring.For
This, when the application floating seal ring when in use, under the premise of same material and sealed pressure because bright band where section
Size is relatively large, and the strength of materials and bearing capacity are opposite to be improved, and deflection is opposite to be reduced, the forced area of bright band, than pressure and oil
Film operating status is relatively stable, so, the abrasion resistance of bright band is opposite to be improved.
Further, since bright band is far from nominal outside diameter, therefore, in floating seal pair rotation work, will reduce naturally
The radius of gyration (or diameter) of bright band reduces revolution linear velocity and opposite sliding distance, reduce heat, abrasion that friction generates
To the adverse effect of lubricating oil film, sealing surface operating status；The probability of external dirt intrusion will be reduced naturally.It will promote naturally
Into bright band wearability improve, the stabilization of its oil film state, improve the service life of floating seal pair.
Optionally, in one possible implementation, it is arranged between the opposite end face of two floating seal rings dust-proof
Band, i.e., contactless anchor ring gap, the outer diameter of dust-proof belt are equal to the nominal outside diameter of floating seal ring, in contactless anchor ring gap
Lubricating oil or lubricating grease are filled to form seal oil ring.
In above scheme, the setting dust-proof belt at the position close to nominal outside diameter, i.e., contactless anchor ring gap, and it is non-
Lubricating oil or lubricating grease are filled in contact anchor ring gap to form seal oil ring, are increased inside pollutant intrusion sealing system
Resistance, reduce external dirt intrusion.
Optionally, in one possible implementation, dust-proof belt includes the first anchor ring for being oppositely arranged and having gap
With the second anchor ring, the first anchor ring and the second anchor ring are arranged in parallel to constitute contactless anchor ring gap, contactless anchor ring gap
For 0.05mm-0.25mm.
Optionally, in one possible implementation, dust-proof belt includes the first anchor ring for being oppositely arranged and having gap
With the second anchor ring, the first anchor ring is equipped with annular projection, and the second anchor ring is equipped with annular recess, annular projection and annular recess shape
At contactless chimeric ring.
In above scheme, dust-proof belt includes contactless chimeric ring, in combined type anchor ring gap fill lubricating oil or
Lubricating grease strengthens the ability for resisting external dirt intrusion to form seal oil ring.
Optionally, contactless chimeric ring is multiple to form combined type dust-proof belt.
In above scheme, the ability for resisting external dirt intrusion is further strengthened.
Optionally, in one possible implementation, dust-proof belt includes the first anchor ring for being oppositely arranged and having gap
With the second anchor ring, the first anchor ring or the second anchor ring are equipped with one or more blind holes, the central axis and floating seal ring of blind hole
Centerline axis parallel, blind hole is interior to fill lubricating grease.
In above scheme, blind hole makees relative circumferential rotation, blind hole open end on the end face of another floating seal ring
Rotary motion trace on the end face of another floating seal ring constitutes contactless anchor ring gap, fills lubricating grease in blind hole.
Make the lubricating grease in the blind hole of relative circumferential rotation and form Seal Oil (rouge) ring, storage has invaded between floating seal ring opposing end surface
Dirt, prevent lubricating system to be contaminated；The lubricating oil to leak is stored, is reduced environmental pollution.
Optionally, in one possible implementation, the aperture of blind hole is gradually increased from open end to closed end.
In above scheme, due to the effect of centrifugal force, dirt, the lubricating oil to leak can be preferably accommodated in blind hole simultaneously
And it is not easy to leak.
Optionally, in one possible implementation, isolation is set between the opposite end face of two floating seal rings
Band fills the ring chamber of high temperature resistant lubricating grease, along the radial direction of floating seal ring opposing end surface, isolation strip is located at bright band and dust-proof
Between band.
In above scheme, isolation strip accommodates the dirt invaded, prevents lubricating system to be contaminated, accommodates the lubrication to leak
Oil plays isolation.
Optionally, in one possible implementation, ring chamber is the end face for being opened in one of floating seal ring
On endless groove, or to be provided with the endless groove being oppositely arranged on the end face of two floating seal rings.
Optionally, in one possible implementation, oleophylic core is equipped in ring chamber, oleophylic core is by braided fabric or foaming
Colloidal materials are constituted.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of existing floating seal pair；
Fig. 2 is existing floating seal ring function region division and stress diagram；
Fig. 3 is the force analysis figure of existing floating seal ring；
Fig. 4 is the deformation schematic diagram of existing floating seal pair；
Fig. 5 is the structural schematic diagram of floating seal pair in the present embodiment；
Fig. 6 is the force analysis figure of floating seal ring in the present embodiment；
Fig. 7 is a kind of structural schematic diagram of dust-proof belt in the present embodiment；
Fig. 8 is another structural schematic diagram of dust-proof belt in the present embodiment；
Fig. 9 is a kind of structural schematic diagram of isolation strip in the present embodiment；
Figure 10 is another structural schematic diagram of isolation strip in the present embodiment；
Figure 11 is another structural schematic diagram of isolation strip in the present embodiment；
Figure 12 is another structural schematic diagram of isolation strip in the present embodiment.
Icon: 10a- floating sealing base；10b- rubber seal；10c- floating seal ring；10- floating seal ring；10A- bright band；
11- dust-proof belt；The isolation strip 12-；110- annular projection；111- annular recess；112- blind hole；120- oleophylic core.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the embodiment of the present application, it is to be understood that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
This application product using when the orientation or positional relationship usually put or those skilled in the art usually understand
Orientation or positional relationship, be merely for convenience of description the application and simplify description, rather than the equipment of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
In the description of the embodiment of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, term
" setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be directly connected, can also can be inside two elements indirectly connected through an intermediary
Connection.For the ordinary skill in the art, above-mentioned term in this application specific can be understood with concrete condition
Meaning.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Below in conjunction with attached drawing, the technical solution in the application is described.
The present embodiment provides a kind of floating seal pair, the bright band that floating seal pair can solve existing floating seal pair is used
Service life is short, and the pollutants such as external muddy water, sandy soil are easy to invade in sealing system, is unfavorable for lubrication, sealing oil-film stabilization
The problem of operation, acceleration floating seal secondary sealing failure.
Wherein, inventors have found that secondary (the inventor's reference float grease seal professional standard JB/T8293- of existing floating seal
2014 discoveries and inventor have found according to existing float grease seal on the market) bright band 10A be proximate to nominal outside diameter.Such as
Fig. 1, Fig. 1 show the specific structure of existing floating seal pair, wherein D1 indicates that nominal outside diameter, D2 indicate nominal bore diameter, show
Floating sealing base 10a, rubber seal 10b, floating seal ring 10c, bright band 10A (contact wear-resistant seal anchor ring).
Fig. 2, Fig. 3 and Fig. 4 are please referred to, Fig. 2 shows existing floating seal ring function region division and force diagram, Fig. 3
The force analysis figure of existing floating seal ring is shown, Fig. 4 is the deformation schematic diagram of existing floating seal pair.
It is found after inventor is to the research of existing floating seal pair:
Referring to Figure 1, floating seal ring 10c in order to accommodate rubber seal 10b have to it is sacrificial to reduce sectional area
Its strength of materials of domestic animal is cost, and the ring wall section of floating seal ring 10c is arranged to outer cone and floating sealing base 10a inner conical at combining
Cavity.Referring to fig. 2, existing floating seal ring, can be to floating seal ring after rubber seal 10b compression deformation in assembly
The outer cone normal direction of 10c generates pressure F, at this point, F can be decomposed into axial compressive force F1 and radial pressure F2, due to F1's referring to Fig. 3
Effect, bright band 10A can generate reaction force P, that is, sealed pressure P.Sealed pressure P and axial compressive force F1 forms moment M.Close
Under the premise of seal pressure P and the strength of materials are identical, floating seal ring 10c resists ability and the sectional dimension (section of moment M effect
Coefficient or section modulus) size direct proportionality, it is clear that: the bending strength of the floating seal ring in the present embodiment is higher than existing
There is floating seal ring (referring to Fig. 6, Fig. 6 is the force analysis figure of floating seal ring in the present embodiment).With reference to Fig. 4, work as bright band
10A can cause material structural strength relatively low (sectional dimension is small) after the effect by sealed pressure P (showing in figures 3 and 4)
Sealing surface functional area (that is, floating seal ring 10c is close to part of nominal outside diameter in the prior art) generate bending strain (partially
Change shape), after being deformed due to bright band 10A, the position of P can be mobile from the A point in Fig. 4 to B point, at this point, bright band 10A group
At the secondary real contact area of friction can reduce, in the case where P size is constant, pressure increases, abrasion aggravation；At this point, existing
There are two in technology sealing surface functional areas being oppositely arranged each spontaneous under the action of reaction force P (or moment M)
Raw bending, nominal outside diameter end are in the bifurcated deformation for being located remotely from each other shape, and the oil film on bright band 10A is made to be further exacerbated by mill by destruction
Damage and leakage, meanwhile, the pollutants such as external muddy water, sandy soil are easier to invade in sealing system from deformation place, be unfavorable for lubrication, it is close
The stable motion of oil sealing film accelerates the seal failure of floating seal pair.
For this purpose, inventors herein propose floating seal pair provided in this embodiment, see below and attached drawing.
Fig. 5 is referred to, Fig. 5 shows the specific structure of floating seal pair in the present embodiment.
Floating seal pair includes two floating seal rings 10 being oppositely arranged.The opposite end face of two floating seal rings 10
Between bright band 10A, i.e. contact wear-resistant seal anchor ring are set, the internal diameter of bright band 10A is equal to the nominal bore diameter of floating seal ring 10
(end face that the relatively large supporter functional area of the strength of materials is arranged in bright band 10A).
For this purpose, when the application floating seal ring 10 when in use, under the premise of same material and sealed pressure P, because
Relatively large for sectional dimension at the place bright band 10A, the strength of materials and the opposite raising of bearing capacity, deflection is opposite to be reduced, bright band
It is the forced area of 10A, relatively more stable than pressure and oil film operating status, so, the abrasion resistance of bright band 10A is opposite to be improved.
Further, since bright band 10A is far from nominal outside diameter, therefore, when floating seal ring 10 rotates, will reduce naturally
The radius of gyration (or diameter) of bright band 10A, i.e. reduction revolution linear velocity and opposite sliding distance, the heat of reduction friction generation,
Wear the adverse effect to lubricating oil film, sealing surface operating status；The probability of external dirt intrusion will be reduced naturally.It will be natural
Ground promotes the stabilization of the wearability raising of bright band 10A, its oil film state, improves the service life of floating seal pair.
Meanwhile herein it is noted that, in the prior art, such as Fig. 1, at nominal bore diameter, two be oppositely arranged it is floating
Rotary packing ring 10c has a tapered gaps between end face, tests and finds through inventor, due to capillarity, centrifugal action and floats
The temperature arrising caused by friction after rotation of rotary packing ring 10 cancels tapered gaps in the prior art, also not under the action of inner cavity oil pressure increases
Bright band 10A formation lubrication can be entered to lubricating oil, sealing oil film has an impact.
Meanwhile inventors have found that existing floating seal ring 10c when in use, bright band 10A is close to nominal outside diameter, revolution
Linear velocity is high, aggravates abrasion.Compared with floating seal ring 10 provided in this embodiment, under conditions of same angular velocity, line
Speed is directly proportional to the radius of gyration, that is, in the prior art, the radius of gyration is big, causes linear velocity big, leads to opposite sliding distance
Long, even coefficient of friction is constant, in the same time with respect to long the increase accordingly abrasion loss of sliding distance, is equivalent to increase
Coefficient of friction, increases frictional heat and fretting wear, material thermal creep is increased and probability that film strength reduces, more into one
Walk accelerated wear test.
For this purpose, in a kind of embodiment in the cards, the ruler in the nominal bore diameter hole by reducing floating seal ring 10
Very little (floating seal ring 10 more in the prior art), can be effectively reduced the radius of gyration, to slow down the change of floating seal ring 10
Shape and abrasion.
In a kind of embodiment of possible realization, such as Fig. 5, set between the opposite end face of two floating seal rings 10
Dust-proof belt 11 is set, i.e., contactless anchor ring gap, the outer diameter of dust-proof belt 11 is equal to the nominal outside diameter of floating seal ring 10, non-contact
Lubricating oil or lubricating grease are filled in formula anchor ring gap to form seal oil ring.
Wherein, the setting dust-proof belt 11 at the position close to nominal outside diameter, i.e., contactless anchor ring gap, and it is non-contact
Lubricating oil or lubricating grease are filled in formula anchor ring gap to form seal oil ring, increase the resistance inside pollutant intrusion sealing system
Power reduces external dirt intrusion.
In a kind of embodiment of possible realization, such as Fig. 5, set between the opposite end face of two floating seal rings 10
Isolation strip 12 is set, that is, the ring chamber of high temperature resistant lubricating grease is filled, along the radial direction of 10 opposing end surface of floating seal ring, isolation strip 12
Between bright band 10A and dust-proof belt 11.
Wherein, isolation strip 12 accommodates the dirt that has invaded, and sealing system is prevented to be contaminated, accommodate the lubricating oil to leak and
The part abrasive grain that bright band 10A is generated plays isolation.Meanwhile isolation strip 12 can feed bright band for the lubricating oil of receiving is counter
10A。
In a kind of embodiment of possible realization, such as Fig. 5, dust-proof belt 11 includes being oppositely arranged and the with gap
One anchor ring and the second anchor ring, the first anchor ring is parallel with the second anchor ring, and contactless anchor ring gap is 0.05mm-0.25mm.Wherein,
Contactless anchor ring gap can also control within the scope of 0.07mm-0.10mm.
In a kind of embodiment of possible realization, as Fig. 7, Fig. 7 show another structure of dust-proof belt 11.
Dust-proof belt 11 includes the first anchor ring and the second anchor ring for being oppositely arranged and having gap, and the first anchor ring is equipped with ring-type
Protrusion 110, the second anchor ring are equipped with annular recess 111, and annular projection 110 forms contactless chimeric ring with annular recess 111.
Wherein, dust-proof belt 11 includes that contactless chimeric ring constitutes anchor ring gap, is filled in combined type anchor ring gap
Lubricating oil or lubricating grease strengthen the ability for resisting external dirt intrusion to form seal oil ring.
Wherein, referring to Fig. 7, further to reinforce resisting the ability of external dirt intrusion, contactless chimeric ring is more
It is a to form combined type dust-proof belt.
Simultaneously, it should be noted that the cross sectional shape of annular projection 110 and annular recess 111 is without limitation.Wherein, ring
Shape protrusion 110 and annular recess 111 cooperate, and maintain anchor ring gap between corresponding profile, but cannot generate profile
Contact and interference.
In a kind of embodiment of possible realization, as Fig. 8, Fig. 8 show another structure of dust-proof belt 11.
Dust-proof belt 11 includes the first anchor ring and the second anchor ring for being oppositely arranged and having gap, the first anchor ring or the second anchor ring
It is equipped with one or more blind holes 112, the central axis and 10 centerline axis parallel of floating seal ring of blind hole 112, in blind hole 112
Fill lubricating grease.
Wherein, blind hole 112 makees relative circumferential rotation on the end face of another floating seal ring 10, and blind hole 112 is open
The rotary motion trace on the end face of another floating seal ring 10 is held to constitute contactless anchor ring gap, filling in blind hole 112
Lubricating grease.Make the lubricating grease in the blind hole 112 of relative circumferential rotation and form Seal Oil (rouge) ring, storage has invaded floating seal ring
Dirt between 10 opposing end surfaces, prevents lubricating system to be contaminated；The lubricating oil to leak is stored, is reduced environmental pollution.
It should be noted that the aperture of blind hole 112 is from open end to closed end in a kind of embodiment in the cards
It is gradually increased.
It should be noted that the cross sectional shape of blind hole 112 is unlimited, it can be rectangle, semicircle etc., can also be receiving
The good taper of effect.
In one possible implementation, ring chamber is the ring being opened on the end face of one of floating seal ring 10
Shape slot, or to be provided with the endless groove being oppositely arranged on the end face of two floating seal rings 10.
Wherein, such as Fig. 5, in Fig. 5, ring chamber is the ring-type being oppositely arranged on the end face for be provided with two floating seal rings 10
Slot fills high temperature resistant lubricating grease in ring chamber to constitute isolation strip 12.
Fig. 9 is referred to, Fig. 9 shows the structure of another isolation strip 12.Ring chamber is close to be opened in one of floating
Endless groove on the end face of seal ring 10 fills high temperature resistant lubricating grease in ring chamber to constitute isolation strip 12.
0, Figure 10 shows the structure of another isolation strip 12 referring to Figure 1.Oleophylic core 120, oleophylic are equipped in ring chamber
Core 120 is made of braided fabric or foaming colloidal materials.
Wherein, the braided fabric suitable, strip, corrosion resistant, lint-free, loose porous by sectional dimension of oleophylic core 120
Or flexibility, loose porous foaming colloidal materials are constituted, and as fixation, keep not flowing in the high temperature resistant lubricating grease of semisolid state
The skeleton of mistake.Simultaneously, it should be noted that oleophylic core 120 is bonded in the bottom of ring chamber with oil resistant bonding agent, and ring chamber remains
Complementary space fills high temperature resistant lubricating grease.
Wherein, it should be noted that the cross sectional shape of ring chamber can be rectangle without limiting, and can also be circle
Shape (such as Figure 11), diamond shape (such as Figure 12).Meanwhile when ring chamber is opposite on the end face for be provided with two floating seal rings 10 sets
When the endless groove set, endless groove can be symmetrically or non-symmetrically arranged.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of floating seal pair, the floating seal ring being oppositely arranged including two, which is characterized in that
Bright band, i.e. contact wear-resistant seal anchor ring, the bright band are set between the opposite end face of two floating seal rings
Internal diameter be equal to the floating seal ring nominal bore diameter.
2. floating seal pair according to claim 1, which is characterized in that
Dust-proof belt is set between the opposite end face of two floating seal rings, i.e., contactless anchor ring gap is described dust-proof
The outer diameter of band is equal to the nominal outside diameter of floating seal ring, and lubricating oil or lubricating grease are filled in the contactless anchor ring gap with shape
At seal oil ring.
3. floating seal pair according to claim 2, which is characterized in that
The dust-proof belt includes being oppositely arranged and the first anchor ring and the second anchor ring with gap, first anchor ring and described the
Two anchor rings are arranged in parallel to constitute the contactless anchor ring gap, and the contactless anchor ring gap is 0.05mm-0.25mm.
4. floating seal pair according to claim 2, which is characterized in that
The dust-proof belt includes the first anchor ring and the second anchor ring for being oppositely arranged and having gap, and the first anchor ring is equipped with cyclic annular convex
It rises, the second anchor ring is equipped with annular recess, and the annular projection forms contactless chimeric ring with the annular recess.
5. floating seal pair according to claim 4, which is characterized in that
The contactless chimeric ring is multiple to form combined type dust-proof belt.
6. floating seal pair according to claim 2, which is characterized in that
The dust-proof belt includes being oppositely arranged and the first anchor ring and the second anchor ring with gap, on the first anchor ring or the second anchor ring
Equipped with one or more blind holes, the central axis of the blind hole and the floating seal ring centerline axis parallel, in the blind hole
Fill lubricating grease.
7. floating seal pair according to claim 6, which is characterized in that
The aperture of the blind hole is gradually increased from open end to closed end.
8. floating seal pair according to claim 2, which is characterized in that
Isolation strip is set between the opposite end face of two floating seal rings, that is, fills the ring chamber of high temperature resistant lubricating grease,
Along the radial direction of the floating seal ring opposing end surface, the isolation strip is between the bright band and the dust-proof belt.
9. floating seal pair according to claim 8, which is characterized in that
The ring chamber is the endless groove being opened on the opposing end surface of one of them floating seal ring, or to be provided with
The endless groove being oppositely arranged on the end face of two floating seal rings.
10. floating seal pair according to claim 8, which is characterized in that
Oleophylic core is equipped in the ring chamber, the oleophylic core is made of braided fabric or foaming colloidal materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910639708.4A CN110219989B (en) | 2019-07-15 | 2019-07-15 | Floating sealing pair |
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| CN201910639708.4A CN110219989B (en) | 2019-07-15 | 2019-07-15 | Floating sealing pair |
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| CN110219989B CN110219989B (en) | 2024-07-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110566671A (en) * | 2019-09-25 | 2019-12-13 | 湖北金稽山机械科技有限公司 | Mineral framework cementing wear-resistant body floating seal pair and preparation method thereof |
| CN113236782B (en) * | 2021-04-29 | 2023-11-17 | 西安航天精密机电研究所 | High-pressure-resistant low-friction dynamic sealing structure |
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| CN113236782B (en) * | 2021-04-29 | 2023-11-17 | 西安航天精密机电研究所 | High-pressure-resistant low-friction dynamic sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110219989B (en) | 2024-07-23 |
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