CN108240476A - Shaft sealer - Google Patents
Shaft sealer Download PDFInfo
- Publication number
- CN108240476A CN108240476A CN201611233916.7A CN201611233916A CN108240476A CN 108240476 A CN108240476 A CN 108240476A CN 201611233916 A CN201611233916 A CN 201611233916A CN 108240476 A CN108240476 A CN 108240476A
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- China
- Prior art keywords
- bearing
- rotor
- sealing
- axle sleeve
- shaft
- Prior art date
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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
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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
- 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
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The present invention provides a kind of shaft sealers, shaft sealer is used to seal high-speed rotating shaft, rotor and bearing are arranged in rotary shaft, bearing is installed in bearing chamber, and shaft sealer includes being sequentially sleeved at contact seal assembly, labyrinth seal assemblies, pneumostop component and the clearance seal component in rotary shaft and between rotor and bearing.The shaft sealer of the present invention; the slurry material that can be effectively prevent in rotor-side siphon chamber is entered axially across sealing device in bearing chamber along rotary shaft; sealing effect is good; and facilitate ensuring that the lubricating oil in device is not contaminated; make lubricating oil temperature excessively high; convenient for being protected to structures such as rotary shaft, bearing chamber and bearings, the detaching equipment of timing is not needed to replace vulnerable part, can effectively improve the service life of bearing.
Description
Technical field
The present invention relates to sealing device technical field, in particular to a kind of shaft sealer.
Background technology
Traditional sealing device for rotary shaft mainly using rubber seal technology, i.e., fills up rotary shaft and top with sealing ring
Gap between lid, so as to achieve the purpose that prevent leakage.Although the program has many advantages, such as that cost is cheap, easy to clean.But
There is also many shortcomings, for example sealing effect is poor, sealing ring loss is larger, service life is short and linear speed when rotary shaft
When spending larger, the special easily curing of rubber seal crushes.
Invention content
It is a primary object of the present invention to provide a kind of shaft sealer, can be played in axis high speed rotation good
Sealing and lubricant effect, and the service life of seal assembly can be extended.
To achieve these goals, the present invention provides a kind of shaft sealer, shaft sealer revolves at a high speed for sealing
Shaft is arranged with rotor and bearing in rotary shaft, and bearing is installed in bearing chamber, and shaft sealer includes being sequentially sleeved at rotation
Contact seal assembly, labyrinth seal assemblies, pneumostop component and clearance seal group on axis and between rotor and bearing
Part.
Further, contact seal assembly includes：Seal receptacle, seal receptacle is posted by rotor and is arranged on the rotary shaft, close
Envelope seat is provided with the first groove in the side backwards to rotor；Axle sleeve, axle sleeve are arranged on the rotary shaft and in the first groove；Tightly
Firmware, fastener include bolt, and spring is arranged on bolt, and fastener is used to seal receptacle and axle sleeve being fixed together.
Further, seal receptacle is provided with first annular groove, first annular groove and rotation in the side towards rotor
Axis is coaxially disposed, and the first O-ring seals of installing in first annular groove contact sealing so as to be formed between rotor and seal receptacle.
Further, labyrinth seal assemblies include：Labyrinth ring, labyrinth ring abutting contact seal assembly and set, institute labyrinth
Ring set is set on the rotary shaft, and labyrinth ring is setting a plurality of annular tooth part backwards to the side of rotor；Bearing gland, bearing gland are fixed
Lid is located on the side wall of bearing chamber, and bearing gland is provided with a plurality of annular groove portion, a plurality of annular groove in the side towards rotor
Portion and a plurality of annular tooth part staggeredly coordinate and make to form labyrinth seal between labyrinth ring and bearing gland.
Further, the dish-shaped rotor of installing one, labyrinth ring coordinate with bearing gland between seal receptacle and labyrinth seal assemblies
Form a faying face towards rotor afterwards, dish-shaped rotor is attached at faying face, axle sleeve compress dish-shaped rotor so that dish-shaped rotor with
Contact face sealing is formed between labyrinth seal assemblies.
Further, shaft sealer further includes a tapered barrier dish, and barrier dish, which is arranged, is fixed on bearing gland
Outer peripheral edge, to prevent foreign matter from entering in bearing chamber.
Further, bearing gland opens up one first deflector hole in radial directions, makes the outer of annular groove portion and bearing chamber
Chamber communicates.
Further, pneumostop component includes：Sealing gland axle sleeve, sealing gland axle sleeve recline labyrinth seal assemblies and set, gas
Envelope axle sleeve is arranged on the rotary shaft；Vent disc, vent disc are set in the periphery of sealing gland axle sleeve and are fixed on bearing gland, vent disc
Inner wall on be provided with annular sealing gland groove, the conveying gas-pressurized in annular sealing gland groove, so that in sealing gland axle sleeve and bearing
Pneumostop is formed between gland.
Further, vent disc sets oil-through hole on the axis direction for be parallel to rotary shaft.
Further, the periphery of sealing gland axle sleeve is also arranged with disc, and disc is located at the one of the rotor backwards of vent disc
Side, and there is the first cavity between disc and vent disc.
Further, clearance seal component is provided between bearing gland and bearing, clearance seal component includes controlling away from pad,
Control is sticked in bearing towards the side of rotor, and be set in the periphery of sealing gland axle sleeve away from pad, and controls away between pad and sealing gland axle sleeve
Clearance seal is formed with the first gap.
Further, it controls and is located at disc backwards to the side of rotor away from pad, and control away from having second between pad and disc
Cavity, the periphery of disc are equipped with the third cavity of the first cavity of connection and the second cavity, and bearing gland is from its madial wall to outer
Side wall offers the second deflector hole, and the second deflector hole is connected with third cavity, to will be from bearing under rotary centrifugal force
It is middle outflow and fuel tank is flowed back to by the lubricating oil in the first gap.
It applies the technical scheme of the present invention, due to being sequentially installed with contact sealing between the rotary shaft and bearing chamber of the present invention
Component, labyrinth seal assemblies, pneumostop component and clearance seal component, can using the structure gradually sealed at many levels
The slurry material effectivelying prevent in rotor-side siphon chamber enters bearing chamber along rotary shaft axially across sealing device
In, sealing effect is good, and facilitates ensuring that the lubricating oil in device is not contaminated, and makes lubricating oil temperature excessively high, convenient for rotation
The structures such as shaft, bearing chamber and bearing are protected, and do not need to the detaching equipment of timing to replace vulnerable part, can be effective
Improve the service life of bearing.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 diagrammatically illustrates the sectional view of the shaft sealer of the present invention.
Fig. 2 diagrammatically illustrates the half sectional view of the shaft sealer of the present invention.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, rotary shaft；20th, bearing chamber；30th, bearing；40th, spacer；50th, rotor；60th, seal assembly is contacted；61st, it seals
Seat；611st, the first groove；612nd, first annular groove；613rd, the first O-ring seals；614th, second annular groove；615th, the 2nd O
Shape sealing ring；62nd, axle sleeve；63rd, fastener；64th, spring；70th, labyrinth seal assemblies；71st, labyrinth ring；711st, the first mounting hole；
712nd, third annular groove；713rd, third O-ring seals；72nd, bearing gland；721st, annular groove portion 721；722nd, axial boss；
723rd, the first deflector hole；724th, the second deflector hole；80th, pneumostop component；81st, sealing gland axle sleeve；811st, the second mounting hole；812、
Fourth annular groove；813rd, the 4th O-ring seals；82nd, vent disc；821st, third mounting hole；822nd, oil-through hole；823rd, annular gas
Seal groove；90th, dish-shaped rotor；100th, dish is obstructed；110th, disc；120th, control is away from pad；130th, fixing piece.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that it uses in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment not
Be necessarily limited to those steps clearly listed or unit, but may include not listing clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made in opposite description to space used herein above.
Ginseng is seen figure 1 and figure 2, and according to an embodiment of the invention, provides a kind of shaft sealer.In the present embodiment
Shaft sealer is mainly used on the horizontal siphon scraper centrifugal machine of the power unit of hovercar, for preventing siphon chamber
In the materials such as farinaceous size will not be entered in bearing chamber by bearing housing sealing device.Certainly, the sealing of the present embodiment
Device can be applied in disk centrifuge the sealing of rotary shaft lubrication and steam turbine, hydraulic turbine etc. other need to axis into
In the structure of row sealing, the shaft sealer of the present embodiment is specifically introduced with reference to the rotary shaft of horizontal siphon scraper centrifugal machine
Structure.
Shaft sealer in the present embodiment is for sealing high-speed rotating shaft 10, during installation, is arranged in rotary shaft 10 sleeping
The operating rotor 50 of formula siphon scraper centrifugal machine and bearing 30, bearing 30 is mounted in bearing chamber 20, in order to ensure rotary shaft 10
Mounting stability, rotary shaft 10 is provided with spacer 40 in bearing 30 backwards to the side of rotor.
In order to be lubricated sealing under high speed rotation to rotary shaft 10, the shaft sealer of the present embodiment includes contacting close
Sealing assembly 60,70 pneumostop component 80 of labyrinth seal assemblies and clearance seal component during installation, will contact seal assembly
60th, labyrinth seal assemblies 70, pneumostop component 80 and clearance seal component are sequentially arranged in rotary shaft 10, and are located at and are turned
Between son 50 and bearing 30.
Due to being sequentially installed with contact seal assembly 60, labyrinth seal between the rotary shaft 10 of the present embodiment and bearing chamber 20
Component 70, pneumostop component 80 and clearance seal component using the structure gradually sealed at many levels, can effectively prevent turning
Slurry material entering in bearing chamber 20 axially across sealing device along rotary shaft 10 in sub 50 side siphon chambers, it is close
It is good to seal effect, and facilitates ensuring that the lubricating oil in device is not contaminated, makes lubricating oil temperature excessively high, convenient for rotary shaft
10th, the structures such as bearing chamber 20 and bearing 30 are protected, and do not need to the detaching equipment of timing to replace vulnerable part, Neng Gouyou
Effect improves the service life of bearing 30.
Specifically, the contact seal assembly 60 in the present embodiment includes seal receptacle 61, axle sleeve 62 and fastener 63.
Wherein, the rotor 50 that reclines of seal receptacle 61 is set in rotary shaft 10, and seal receptacle 61 is set in the side backwards to rotor 50
It is equipped with the first groove 611；Axle sleeve 62 is set in rotary shaft 10 and in the first groove 611；Fastener 63 is used to seal
Seat 61 and axle sleeve 62 are fixed together.
Since the assembling between rotor 50 and rotary shaft 10 is usually taper assembling, that is to say, that rotary shaft 10 is used for
The radius of part for installing rotor 50 becomes larger along the direction of being inserted in of rotor 50, in order to ensure the intensity of rotary shaft 10 with
And the mounting stability of rotor 50, the variation tendency of the radius of rotary shaft 10 will not be very big, only slightly changes.
In order to effectively prevent the pasty material in 50 side siphon chamber of rotor along the gap between rotor 50 and seal receptacle 61
It leaks, the seal receptacle 61 in the present embodiment is provided with first annular groove 612, first annular groove in the side towards rotor 50
612 are coaxially disposed with rotary shaft 10, the first O-ring seals 613 of installing in the first annular groove 612, by the way that the first O shapes is close
Seal 613 is mounted in first annular groove 612, gap that can effectively between canned rotor 50 and seal receptacle 61.
Accordingly, in order to prevent the pasty material in siphon chamber along rotary shaft 10 axial leakage and from axle sleeve 62 and close
Gap between envelope seat 61 infiltrates, and second annular groove 614 is provided on the side wall of first groove 611 of the present embodiment,
The axis of second annular groove 614 is consistent with the axis of rotary shaft 10, and the 2nd O is correspondingly arranged in the second annular groove 614
Shape sealing ring 615.
Preferably, the fastener 63 in the present embodiment is fastening bolt, in other embodiments of the invention, can also be incited somebody to action
Fastening bolt is set as screw either rivet or other buckle structures etc..
Further, since it is the form of taper assembling between rotor 50 and rotary shaft 10, in order to ensure rotor 50 and rotary shaft
Assembly stability between 10 is arranged with spring 64 in the fastening bolt of the present embodiment, and the both ends of the spring 64 are connected to respectively
On seal receptacle 61 and axle sleeve 62, by the effect of spring 64, the distance between seal receptacle 61 and axle sleeve 62 can be finely adjusted,
And then ensure that rotor 50 can be steadily assemblied in rotary shaft 10.
Referring again to shown in Fig. 1, the labyrinth seal assemblies 70 in the present embodiment include labyrinth ring 71 and bearing gland 72.
Wherein, the axle sleeve 62 of 71 abutting contact seal assembly 60 of labyrinth ring is set, and the first peace is provided on the labyrinth ring 71
Hole 711 is filled, during installation, labyrinth ring 71 is set in by the first mounting hole 711 in rotary shaft 10, and labyrinth ring 71 is backwards to rotor 50
Side a plurality of annular tooth part is set；72 fixed cover of bearing gland is located on the side wall of bearing chamber 20, and the bearing gland 72 exists
The side of rotor 50 is provided with a plurality of annular groove portion 721, which interlocks with the annular tooth part on labyrinth ring 71
Coordinate and make to form labyrinth seal between labyrinth ring 71 and bearing gland 72.Annular groove portion 721 a plurality of simultaneously and a plurality of annular tooth
Portion matches to form concave-convex comb structure, by the bumps comb structure, just can effectively prevent the air-liquid of external corrosion
Body enters in bearing chamber 20, and the service life of bearing 30 is effectively ensured.
In order to further prevent pasty material along the axial dispersion to bearing chamber 20 of rotary shaft 10, the labyrinth of the present embodiment
Be provided with third annular groove 712 on the internal face of the first mounting hole 711 on ring 71, the axis of third annular groove 712 with
The axis of rotary shaft 10 is consistent, and third O-ring seals 713 are provided in the third annular groove 712, is sealed by the 3rd O shapes
The effect of circle 713, convenient for the gap between the first mounting hole 711 and rotary shaft 10 is sealed.
In the present embodiment, one dish-shaped rotor 90 of installing between seal receptacle 61 and labyrinth seal assemblies 70, labyrinth ring 71 with
Bearing gland 72 forms a faying face towards rotor 50 after coordinating, and dish-shaped rotor 90 is attached on faying face, and axle sleeve 62 compresses
Firmly dish-shaped rotor 90 is so as to form contact face sealing, so as to can effectively prevent between dish-shaped rotor 90 and labyrinth seal assemblies 70
Lubricating oil at concave-convex comb structure leaks at faying face, at the same further prevent pasty material in siphon chamber into
Enter in bearing chamber 20.
Preferably, the shaft sealer in the present embodiment further includes a tapered barrier dish 100, and barrier dish 100 is arranged
The outer peripheral edge of bearing gland 72 is fixed on, it can further prevent the pasty material in siphon chamber from entering bearing chamber 20
It is interior, it is of course also possible to prevent the substances such as lubricating oil in bearing chamber 20 from entering in siphon chamber.
The first deflector hole 723, the first end of first deflector hole 723 are provided in axial boss 722 in the present embodiment
It is connected with annular groove portion 721, the periphery of second end extension axial boss 722 of the first deflector hole 723 and the exocoel of bearing chamber 20
It communicates, and the first deflector hole 723 is opened up along the radial direction of bearing gland 72, makes lubricating oil extra at labyrinth seal assemblies 70
It can be flow back into the fuel tank of 20 exocoel of bearing chamber along the first deflector hole 723 under the action of rotary centrifugal force.
It recombines shown in Fig. 1, the pneumostop component 80 in the present embodiment includes sealing gland axle sleeve 81 and vent disc 82.
Wherein, sealing gland axle sleeve 81 reclines labyrinth seal assemblies 70 and sets, and specifically sealing gland axle sleeve 81 sticks on labyrinth ring
71 are set backwards to the side of rotor 50, the second mounting hole 811 are provided on the sealing gland axle sleeve 81, sealing gland axle sleeve 81 passes through second
Mounting hole 811 is sleeved in rotary shaft 10；Third mounting hole 821 is provided on vent disc 82, vent disc 82 passes through third mounting hole
821 are set in the periphery of sealing gland axle sleeve 81, and annular sealing gland groove 823, annular sealing gland are provided on the inner wall of third mounting hole 821
The axis of groove 823 is consistent with the axis of rotary shaft 10.In use, gas-pressurized is conveyed into annular sealing gland groove 823, so that
Form pneumostop between sealing gland axle sleeve 81 and bearing gland 72, can effectively prevent due to bearing 30 work a period of time after,
The temperature raising of the thin oil of bearing 30 is lubricated, mist of oil is generated and enters bearing chamber 20 and pollute other media.
By ventilating into annular sealing gland groove 823, it can prevent lubricating oil temperature from increasing, ensure oil dilution journey
Degree using thin oil lubricant bearing 30, can adequately lubricate bearing 30, ensure that the temperature of bearing 30 is controlled within 30 degree.
Preferably, fourth annular groove 812 is provided on the internal face of the second mounting hole 811, fourth annular groove 812
Axis is consistent with the axis of rotary shaft 10, and the 4th O-ring seals 813 are provided in fourth annular groove 812, passes through the 4th O shapes
The effect of sealing ring 813 can will be sealed between sealing gland axle sleeve 81 and rotary shaft 10, further improve the axis of the present embodiment
The sealing performance of sealing device.
During installation, vent disc 82 by fixing piece 130 be fixed on bearing gland 72 backwards to rotor 50 side,
Stable structure is reliable, and vent disc 82 is prevented in gas replenishment process to shake or stuck, ensures that the sealing of pneumostop component 80 is stablized
Property.Preferably, the fixing piece 130 in the present embodiment is the bolt either fastening structures such as screw or rivet.
For the ease of conveying lubricating oil, the vent disc 82 in the present embodiment is set on the axis direction of rotary shaft 10 is parallel to
Oil-through hole 822 is equipped with, lubricating oil can be lubricated labyrinth seal assemblies by the oil-through hole 822.Certainly, the present invention its
In his embodiment, oil-through hole or excessively oily channel can also be set on sealing gland axle sleeve 81, as long as convenient for the present embodiment
Shaft sealer carries out the other structures of conveying lubricating oil, within protection scope of the present invention.
Preferably, the periphery of the sealing gland axle sleeve 81 in the present embodiment is arranged with disc 110, which is located at logical
Gas disk 82 has the first cavity backwards to the side of rotor 50 between disc 110 and vent disc 82, for oil-through hole to be passed through
822 lubricating oil provides flow channel.
With reference to above-mentioned structure it is recognised that be provided between the bearing gland 72 of the present embodiment and bearing 30 it is above-mentioned between
Gap seal assembly, the clearance seal component include control away from pad 120, the control be sticked away from pad 120 in bearing 30 towards rotor 50 one
Side, and the periphery of sealing gland axle sleeve 81 is set in, and control away from having the first gap between pad 120 and sealing gland axle sleeve 81 and form gap
Sealing.Lubricating oil in 10 high speed rotation middle (center) bearing room 20 of rotary shaft has trend flow to 50 direction of rotor, and control away from
Pad 120 can stop most thin oils, and less thin oil is led to by controlling away from the first gap between pad 120 and sealing gland axle sleeve 81
It crosses, and grease-box is returned to from deflector hole on bearing gland 72 etc. along disc 110 under the action of rotary centrifugal force
In.
For the ease of conveying lubricating oil, the control in the present embodiment is located at disc 110 backwards to the one of rotor 50 away from pad 120
Side, and controlling away from having the second cavity between pad 120 and disc 110, the periphery of disc 110 are equipped with the first cavity of connection and the
The third cavity of two cavitys, bearing gland 72 offer the second deflector hole 724, and the second deflector hole from its madial wall to lateral wall
724 are connected with third cavity, to will be flowed out from bearing 30 under rotary centrifugal force and by the lubricating oil in the first gap
Flow back to fuel tank.
With reference to shown in Fig. 1 and Fig. 2, since the radius of rotor 50 is larger, during work, air is by larger centrifugal force and along turning
Son 50 radially outward diffusion so that the air pressure of 20 inner cavity of bearing chamber be more than 20 exocoel of bearing chamber air pressure, at this point, air from
Bearing 30 is flowed toward 50 direction of rotor, and lubricating oil, which also has the tendency that having from bearing 30 toward 50 direction of rotor, to be flowed, at this point, passing through
Clearance seal component, pneumostop component 80, labyrinth seal assemblies 70 and contact seal assembly 60 set gradually and combine and make
With can be lubricated in 10 rotation process of rotary shaft to parts and the lubricating oil in bearing 30 is made not flow to rotor
Come contaminated material, especially food-grade material in the siphon chamber of 50 sides, external foreign matter can also be made not enter bearing chamber 20
It is interior.
When the rotary shaft 10 of the present embodiment rotates, rotor 50, seal receptacle 61, axle sleeve 62, labyrinth ring 71, sealing gland axle sleeve 81,
The revolution with 10 high speed of rotary shaft together of the inner ring of disc 110 and bearing 30.During rotary shaft 10 rotates, bearing pressure
Lid 72, vent disc 82, control outer ring and bearing chamber 20 away from pad 120 and bearing 30 are fixed.Oil can be used in bearing 30
Grease lubrication or thin oil lubricant.
During sealing, rotor 50 is sealed with seal receptacle 61 using mechanical type contact section, specifically using the first O such as rubber
613 and second O-ring seals 615 of shape sealing ring are sealed, and can prevent foreign matter from entering in seal receptacle 61 and in corroding
The spring 64 in face, avoids spring 64 from failing.
The axial labyrinth seal combination that labyrinth ring 71 and bearing gland 72 use, can effective external corrosive air-liquid body
Into in bearing chamber 20.
Using pneumostop technology between sealing gland axle sleeve 81 and bearing gland 72, can effectively prevent due to 30 work of bearing
After making a period of time, lubricate the temperature raising of the thin oil of bearing 30 and generate mist of oil, mist of oil is avoided to enter bearing chamber 20 outer dirty
The other media of dye.
The shaft sealer of the present invention employs contact seal assembly 60,110 sealing structure of disc, pneumostop component
The combination of the multiple-sealed mode such as 80 and labyrinth seal assemblies 70 can be good at solving the profit of high-speed rotator rotary shaft 10
Sliding sealing problem, and the form that the shaft sealer of the present invention is combined using non-contacting seal and contact seal,
Long lifespan, it is vertebration, wear-resisting, easy to disassemble, and sealing is effectively secured, can effectively ensure that 10 continuous service of rotary shaft,
Refer to be equipped with the efficiency of the equipment of rotary shaft 10.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification for all within the spirits and principles of the present invention, being made,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of shaft sealer, the shaft sealer covers for sealing high-speed rotating shaft (10) on the rotary shaft (10)
Equipped with rotor (50) and bearing (30), the bearing (30) is installed in bearing chamber (20), which is characterized in that the sealing dress
It puts close including being sequentially sleeved at contact in the rotary shaft (10) and between the rotor (50) and the bearing (30)
Sealing assembly (60), labyrinth seal assemblies (70), pneumostop component (80) and clearance seal component.
2. shaft sealer according to claim 1, which is characterized in that the contact seal assembly (60) includes：
Seal receptacle (61), the seal receptacle (61) is posted by the rotor (50) and is set in the rotary shaft (10), described
Seal receptacle (61) is provided with the first groove (611) in the side backwards to the rotor (50)；
Axle sleeve (62), the axle sleeve (62) are set in the rotary shaft (10) and in first grooves (611)；
Fastener (63), the fastener (63) include bolt, and spring (64), the fastener (63) are arranged on the bolt
For the seal receptacle (61) and the axle sleeve (62) to be fixed together.
3. shaft sealer according to claim 2, which is characterized in that the seal receptacle (61) is towards the rotor
(50) side is provided with first annular groove (612), the first annular groove (612) with the rotary shaft (10) is coaxial sets
It puts, the first O-ring seals of installing (613) in the first annular groove (612), so that the rotor (50) and seal receptacle (61)
Between formed contact sealing.
4. shaft sealer according to claim 2, which is characterized in that the labyrinth seal assemblies (70) include：
Labyrinth ring (71), the labyrinth ring (71) recline the contact seal assembly (60) and sets, the labyrinth ring (71)
It is set in the rotary shaft (10), the labyrinth ring (71) is setting a plurality of annular tooth backwards to the side of the rotor (50)
Portion；
Bearing gland (72), bearing gland (72) fixed cover are located on the side wall of the bearing chamber (20), and the bearing
Gland (72) is provided with a plurality of annular groove portion (721), a plurality of annular groove portion (721) in the side towards the rotor (50)
Staggeredly coordinate with a plurality of annular tooth part and make formation labyrinth between the labyrinth ring (71) and the bearing gland (72) close
Envelope.
5. shaft sealer according to claim 4, which is characterized in that the seal receptacle (61) and the labyrinth seal group
A direction is formed after the dish-shaped rotor (90) of installing one between part (70), the labyrinth ring (71) and the bearing gland (72) cooperation
The faying face of the rotor (50), the dish rotor (90) are attached at the faying face, and the axle sleeve (62) compresses the dish
Shape rotor (90) is so as to form contact face sealing between the dish rotor (90) and the labyrinth seal assemblies (70).
6. shaft sealer according to claim 5, which is characterized in that it is tapered that the shaft sealer further includes one
Obstruct dish (100), it is described barrier dish (100) be arranged the outer peripheral edge for being fixed on the bearing gland (72), to prevent foreign matter into
Enter in the bearing chamber (20).
7. shaft sealer according to claim 6, which is characterized in that the bearing gland (72) is opened in radial directions
If one first deflector hole (723), the annular groove portion (721) is made to be communicated with the exocoel of bearing chamber (20).
8. shaft sealer according to claim 4, which is characterized in that the pneumostop component (80) includes：
Sealing gland axle sleeve (81), the sealing gland axle sleeve (81) recline the labyrinth seal assemblies (70) and set, the sealing gland axle sleeve
(81) it is set in the rotary shaft (10)；
Vent disc (82), the vent disc (82) are set in the periphery of the sealing gland axle sleeve (81) and are fixed on the bearing gland
(72), annular sealing gland groove (823) is provided on the inner wall of the vent disc (82), in the annular sealing gland groove (823)
Gas-pressurized is conveyed, so as to form pneumostop between the sealing gland axle sleeve (81) and the bearing gland (72).
9. shaft sealer according to claim 8, which is characterized in that the vent disc (82) is being parallel to the rotation
Oil-through hole (822) is set on the axis direction of axis (10).
10. shaft sealer according to claim 8, which is characterized in that the periphery of the sealing gland axle sleeve (81) is also arranged
Have a disc (110), the disc (110) positioned at the vent disc (82) backwards to the side of the rotor (50), and institute
Stating has the first cavity between disc (110) and the vent disc (82).
11. shaft sealer according to claim 10, which is characterized in that the bearing gland (72) and the bearing
(30) the clearance seal component is provided between, the clearance seal component includes control away from pad (120), and the control is away from pad
(120) side being sticked in the bearing (30) towards the rotor (50), and the periphery of the sealing gland axle sleeve (81) is set in,
And the control forms clearance seal away from having the first gap between pad (120) and the sealing gland axle sleeve (81).
12. shaft sealer according to claim 11, which is characterized in that the control gets rid of oil away from pad (120) positioned at described
Disk (110) backwards to the side of the rotor (50), and the control away between pad (120) and the disc (110) with second
Cavity, the periphery of the disc (110) are equipped with the third cavity for connecting first cavity and second cavity, the axis
Pressure cap (72) offers the second deflector hole (724) from its madial wall to lateral wall, and second deflector hole (724) with it is described
Third cavity is connected, and passes through the profit in first gap will be flowed out from the bearing (30) under rotary centrifugal force
Oil flow oil return box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233916.7A CN108240476A (en) | 2016-12-27 | 2016-12-27 | Shaft sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233916.7A CN108240476A (en) | 2016-12-27 | 2016-12-27 | Shaft sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240476A true CN108240476A (en) | 2018-07-03 |
Family
ID=62701770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611233916.7A Pending CN108240476A (en) | 2016-12-27 | 2016-12-27 | Shaft sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240476A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109046798A (en) * | 2018-10-18 | 2018-12-21 | 张家港市蓝鸟机械有限公司 | A kind of axle sealing structure of horizontal spiral screen centrifuge |
| CN109442042A (en) * | 2018-10-19 | 2019-03-08 | 杭州加包装技术有限责任公司 | A kind of mechanical part gas sealing structure under the environment for powder |
| CN109482373A (en) * | 2018-12-17 | 2019-03-19 | 张家港市永达机械制造有限公司 | The axle sealing structure of top suspension automatic centrifuge |
| CN109707746A (en) * | 2018-12-13 | 2019-05-03 | 广州市昊志机电股份有限公司 | Bearing seal structure and electro spindle including the sealing structure |
| CN110925433A (en) * | 2018-09-20 | 2020-03-27 | 常州艾布纳机械有限公司 | Coulter mixer main shaft seal structure |
| CN111030354A (en) * | 2019-12-10 | 2020-04-17 | 宁波上中下自动变速器有限公司 | Motor and vehicle |
| CN114937632A (en) * | 2022-07-25 | 2022-08-23 | 华海清科股份有限公司 | Be applied to two-way atmoseal structure and wafer processing apparatus that wafer was handled |
| CN115041082A (en) * | 2022-06-10 | 2022-09-13 | 中南大学 | Shaft end sealing device of powder mixing equipment and mounting method thereof |
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| CN110925433A (en) * | 2018-09-20 | 2020-03-27 | 常州艾布纳机械有限公司 | Coulter mixer main shaft seal structure |
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| CN109707746B (en) * | 2018-12-13 | 2021-04-30 | 广州市昊志机电股份有限公司 | Bearing sealing structure and electric spindle comprising same |
| CN109482373A (en) * | 2018-12-17 | 2019-03-19 | 张家港市永达机械制造有限公司 | The axle sealing structure of top suspension automatic centrifuge |
| CN111030354A (en) * | 2019-12-10 | 2020-04-17 | 宁波上中下自动变速器有限公司 | Motor and vehicle |
| CN115041082A (en) * | 2022-06-10 | 2022-09-13 | 中南大学 | Shaft end sealing device of powder mixing equipment and mounting method thereof |
| CN114937632A (en) * | 2022-07-25 | 2022-08-23 | 华海清科股份有限公司 | Be applied to two-way atmoseal structure and wafer processing apparatus that wafer was handled |
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Application publication date: 20180703 |
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