CN110425286A - A kind of coaxial twayblade gas barrier sealing device - Google Patents
A kind of coaxial twayblade gas barrier sealing device Download PDFInfo
- Publication number
- CN110425286A CN110425286A CN201910768155.2A CN201910768155A CN110425286A CN 110425286 A CN110425286 A CN 110425286A CN 201910768155 A CN201910768155 A CN 201910768155A CN 110425286 A CN110425286 A CN 110425286A
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- ring blade
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- 238000007789 sealing Methods 0.000 title claims abstract description 200
- 241000734468 Listera Species 0.000 title claims abstract description 17
- 230000004888 barrier function Effects 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 70
- 238000002347 injection Methods 0.000 claims abstract description 62
- 239000007924 injection Substances 0.000 claims abstract description 62
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 238000006424 Flood reaction Methods 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 238000005457 optimization Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of coaxial twayblade gas barrier sealing devices, including main shaft, sealing wheel, sealing cover and shell, sealing cover is arranged in shell end, main shaft passes through the external rotation driving of sealing cover connection, sealing wheel is arranged on main shaft, sealing wheel is located in sealing cover lid, sealing wheel includes wheel body, outer ring blade and inner ring blade, outer ring blade and inner ring blade are arranged at wheel body towards on a side end face of sealing cover, outer ring blade and inner ring blade are circlewise distributed and centered on main shaft, after outer ring blade and inner ring vanes main shaft drive rotation, outer ring blade centrifugal pump gas, inner ring blade centripetal discharge pump gas, O-ring is set on the contact surface of wheel body and main shaft.Main shaft arranges that sealing wheel further includes separate cavities and liquid injection hole vertically, and sealing cover further includes the bulge loop being arranged in towards on the end face of sealing wheel, and bulge loop is inserted into separate cavities, and sealing fluid floods bulge loop bottom under stationary state.
Description
Technical field
The present invention relates to air seal field, specifically a kind of coaxial twayblade gas barrier sealing device.
Background technique
Need to use sealing on many machines, such as stirring is unable to ingress of air medium or the gas volatilized cannot be big
The stirred tank of amount discharge atmosphere, or drum send the blower etc. of a slightly harmful working gas.
These devices need to keep apart the dielectric gas in device with outside atmosphere, because being equipment, acting needs
Rotary shaft is used, and the rotary power of rotary shaft is typically derived from a motor or transmission device outside device, at the end of machine
Portion certainly will be related to rotary dynamic seal, and directly embrace main shaft using a sealing ring, because being that the different component of sound is in contact,
Larger friction is had, loss power can still receive, but the amount of heat generated that rubs can not distribute in time, and local temperature rise is very big,
Seal clearance is not only influenced, abrasion is also resulted in, maintenance frequently, also has using fluid-tight, and a rotating ring is allowed to be inserted into one
The contact with oil liquid is kept in a oil pocket, while rotation, to allow liquid isolation two sides gas, but this mode still has
Biggish friction and calorific value, oil liquid needs flow and add heat exchanger, and the power loss on main shaft is also larger, acting
Low efficiency.
Summary of the invention
It is in the prior art to solve the purpose of the present invention is to provide a kind of coaxial twayblade gas barrier sealing device
Problem.
To achieve the above object, the invention provides the following technical scheme:
A kind of coaxial twayblade gas barrier sealing device, including main shaft, sealing wheel, sealing cover and shell, sealing cover setting exist
Shell end, main shaft pass through the external rotation driving of sealing cover connection, are arranged sealing wheel on main shaft, sealing wheel is located at sealing cover lid
Interior, sealing wheel includes wheel body, outer ring blade and inner ring blade, and outer ring blade and inner ring blade are arranged at wheel body towards sealing cover
A side end face on, outer ring blade and inner ring blade are circlewise distributed and centered on main shafts, outer ring blade and inner ring blade
After main shaft drives rotation, O is arranged on the contact surface of wheel body and main shaft in outer ring blade centrifugal pump gas, inner ring blade centripetal discharge pump gas
Type circle.
This sealing device uses on the stirred tank for for example having sealing demand, or on the blower of the unconventional gas of transport,
Dielectric gas in device is kept apart with outside atmosphere, main shaft directly uses the line shaft of equipment, and shell is also original machine
A part, it is only necessary to carry out small transformation, process positioning spigot in shell end when transformation, sealing cover is allowed accurately to pacify
It is attached to shell just, sealing ring is set on the contact surface of sealing cover and shell and carries out static seal.
Sealing wheel, which is arranged, on main shaft and follows main shaft to rotate, using rotary power as sealed motive force, outer ring blade and interior
Ring blade rouses body of supplying gas toward two sides respectively, and outer ring blade drum in machine cavity is sent, and inner ring blade is sent toward atmospheric side drum, by double
The drum of blade twocouese is sent, and two parts gas is allowed to be isolated on the middle position of blade, and outer ring blade is centrifugal pump gas,
It is similar with the blade shape of centrifugal blower, and gas is needed to carry out centripetal flow on inner ring blade, so needing especially to be set
Meter, the blade path at relatively large radius is narrowed, makes the blade path at small radii wider, so that meeting after gas centrifugation movement
It is extruded rebound, and toward centripetal guiding on blade windward side, blade and inner circle are tangent at least radius, such double action
Lower gas carries out centripetal flow, and outer ring blade and inner ring blade rouse body of supplying gas toward both direction respectively, generates isolation in intersection
Band, to reach dynamic sealing effect.Certainly, the sealing force of this dynamic sealing is not very big, by the way that different size of sealing is arranged
Wheel can obtain different sealing forces, but can not infinitely increase, so, the application of the present apparatus is the close of normal pressure or minute-pressure
Close stirred tank or blower.
Further, the blade height gradual change of outer ring blade, the blade height of outer ring blade is close to the side of inner ring blade
Lower than the side far from inner ring blade, the blade height gradual change of inner ring blade, the blade height of inner ring blade is close to outer ring blade
Side be lower than far from outer ring blade side；Edge is also obliquely installed on the blade of outer ring blade and inner ring blade, outer ring blade
With, along mutual position is concaved towards, sealing cover is oblique towards setting on the interior table end face of sealing wheel on the blade of inner ring blade
Face, inclined-plane match on the blade of outer ring blade and inner ring blade along inclined degree.
The blade height gradual change of outer ring blade and inner ring blade, and the side being located remotely from each other is higher, close to each other one
Side is lower, constitutes the channel of gradual change area again in this way on runner, and the outlet end passageways area of respective blade is big, close to isolation
One end aisle spare of band is small, so that gas is more difficult to reach isolation strip, enhances sealing effect；And along inclined on inclined-plane and blade
Being arranged then is difficulty of processing in order to reduce inner and outer ring blade, if on blade along be it is conplane, in order to reach leaf
The purpose of piece highly gradient, it is necessary to mill out the blade separate slot of depth gradual change, while blade is curved blade, this is in Milling Process
When difficulty it is very big, and first process the inner and outer ring blade of identical blade height, an inclined-plane then gone out by lathe vehicle to obtain
The blade for obtaining highly gradient is then that difficulty of processing substantially reduces.
Further, main shaft is arranged vertically, and sealing wheel further includes separate cavities and liquid injection hole, and separate cavities are arranged in wheel body direction
The side of sealing cover, separate cavities include slot and cavity, and slot upper end is located at wheel body upper surface, is located at outer ring blade and inner ring leaf
Between piece, cavity is located inside wheel body, and cavity is located at slot outer ring in the horizontal plane and is connected by a channel of bottom
Logical, the side of wheel body is disposed radially liquid injection hole, and liquid injection hole connects cavity, and liquid injection hole is threaded hole, and sealing is marked in separate cavities
Liquid, sealing cover further include the bulge loop being arranged in towards on the end face of sealing wheel, and bulge loop is inserted into slot, sealing fluid under stationary state
Flood bulge loop bottom；Tooling hole is arranged in sealing cover side, and tooling axially bored line is in the same plane with fluid injection axially bored line, tooling hole
Greater than liquid injection hole, liquid injection hole is blocked using the first plug screw, and tooling hole is blocked using the second plug screw.
The dynamic sealing of inner and outer ring blade can only be sealed when main shaft rotates, when machine down, main shaft stalling, sealing
Power disappears, if still needing interior external seal when shutting down, it is necessary to which the static seal of auxiliary uses sealing ring taps after can be shutdown
Full main shaft passes through on the gap of sealing cover, but come cannot be timely for this mode one, and two need manual operations, trouble.So this
Device is further provided with sealing when sealing fluid goes to be shut down, and seals the bulge loop on interior surface when shutting down by sealing fluid
It floods, comes, can not contact so that the gas and atmosphere in machine have been isolated by bulge loop.It is all marked in slot and cavity
Sealing fluid and be connected state, in machine operation, main shaft rotation, sealing fluid since centrifugal force is got rid of toward cavity, thus
Liquid level decline in slot, sealing fluid is contacted with bulge loop disconnection, so as to main shaft smooth rotation, if in main shaft rotation, sealing
Liquid is still contacted with bulge loop, then liquid-solid sound contact can be constituted, rotational resistance is larger, is still had larger friction and is generated heat
Amount, so the setting of cavity is exactly to allow this one of static seal to disengage in time in machine operation.
Liquid injection hole is the channel of extraneous injection sealing fluid, after device all assembles, liquid injection pipe sequentially pass through tooling hole,
Liquid injection hole adds sealing fluid, the first plug screw and the second plug screw difference liquid injection hole and tooling hole in cavity, for protruding into for tool
Extraction, so tooling hole is greater than liquid injection hole.
As optimization, liquid injection hole is horizontally disposed, and liquid injection hole connects the bottom of cavity.The bottom that liquid injection hole connects cavity is convenient
The liquid level of sealing fluid in cavity is learnt in the external world when adding sealing fluid, cannot be added, can not cannot be added less, machine is close when running
It is the demand for sealing liquid measure that sealing fluid, which did not had bulge loop bottom, when sealing liquid disengages bulge loop, shuts down, and the bottom of liquid injection hole connection cavity
Afterwards, liquid injection pipe is just needed using thread head, and slightly reversed dip machine is needed when taking out, when to extract liquid injection pipe out
Sealing fluid will not be flowed out from liquid injection hole.
As optimization, sealing wheel is connected with spindle drive.The axial direction that sealing wheel relies solely on two sides holds out against positioning also can be from
Rotary power is obtained on main shaft, but unreliable there may be sliding or being driven, and the dynamic seal of inner and outer ring blade need compared with
Big revolving speed, so sealing wheel is connect with spindle drive may insure that rotation is transmitted on sealing wheel.
As optimization, sealing wheel and main shaft are driven by key, and keyway is arranged in wheel body centre bore, and keyway is half through slot, key
The open end of slot is located at wheel body lower end surface, and the upper end of keyway processes escape, also sets up O-ring slot, O-ring in wheel body centre bore
In O-ring slot, O-ring slot position is in the top of keyway.
Key transmission is a kind of convenient driving form of setting, and due to also needing to be arranged O-ring between sealing wheel and main shaft,
Keyway cannot be all-pass slot, and not so O-ring can not just seal up the gap at keyway, so keyway can only be half slot form,
Again because the assembling process of sealing wheel is the main shaft that puts on from top to bottom, shown keyway will downward, end of half through slot in hole
The bad processing in portion, so processing one of escape in end meets processing technology.
As optimization, sealing wheel, by hub form positioning, passes through screw-threaded coupling on main shaft: sealing device further includes the
One axle sleeve and the second axle sleeve, the first axle sleeve and the second axle sleeve are set on main shaft, and the first axle sleeve and the second axle sleeve are born against
The both ends for sealing wheel pass through the round nut screwed on main shaft close to the axle sleeve of rotation driving and compress.Sealing wheel is needed in main shaft
Upper carry out axially position can be the shaft shoulder and the forms such as retaining ring added to position, is also possible to hub form, there is several actings on main shaft
Part, sealing wheel is one of them, can be impeller in blower down, can be the components such as stirring wheel down in stirred tank, in master
Axle sleeve is added between acting component on axis to be positioned, one is easy to assembly, and two come registration, all driven members on main shaft
After two sides are compacted, all parts will not shake.
As optimization, tooling hole and liquid injection hole respectively there are two, two tooling holes are symmetrical by axis centre of main shaft, two
Liquid injection hole is symmetrical by axis centre of main shaft.There are two one respectively can guarantee that the rotation of sealing wheel is dynamic for tooling hole and liquid injection hole
Balance, two can clear up some impurity dusts in separate cavities, because some dusts in atmosphere may be suitable when machine down
Gap fall on inner ring blade and then fall into separate cavities, accumulating gradually, it is more also to accumulate, until because of sealing effect,
And the external world can periodically connect two liquid injection holes, rinse separate cavities with low speed water, take away dust debris.
Compared with prior art, the beneficial effects of the present invention are: the present invention is by being arranged not similar shape on a sealing wheel
The blade of shape, different location allows the gas at sealing wheel to flow respectively toward both direction, gas at outer ring in machine operation
Centrifugal flow, the centripetal movement of gas at inner ring, causes isolation strip on inner and outer ring blade edge circle, reaches dynamic sealing effect, runs
When, the sealing fluid in separate cavities is disengaged by centrifugation whipping with static bulge loop, is avoided rotating main shaft and is caused to hinder；Machine stops
When machine, sealing fluid in separate cavities natural " lying flat " floods bulge loop lower edge, inside and outside gas of operating machine is isolated, and forming is reliable
Stop sealing；Inner and outer ring blade height gradual change, the side blade being located remotely from each other is high, and side blade close to each other is low, thus logical
Blade path toward isolation strip is not only gradually reduced radially, but also is also gradually reduced on channel thickness, and buffer action is enhanced,
Lift-off seal effect；Double liquid injection holes and tooling hole facilitate extraneous cleaning separate cavities.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.
Fig. 1 is mounting structure schematic diagram of the invention；
Fig. 2 is the axial plane figure of present invention sealing wheel；
Fig. 3 is the top view of present invention sealing wheel, and the gray area in figure is gas flow region；
Fig. 4 is the view A under stationary state in Fig. 1；
Fig. 5 is the view D in Fig. 4；
Fig. 6 is the view B in Fig. 1；
Fig. 7 is the view C in Fig. 1；
Fig. 8 is the view A under operating status in Fig. 1.
In figure: 1- main shaft, 2- sealing wheel, 21- wheel body, 22- outer ring blade, 23- inner ring blade, 24- separate cavities, 241- every
It is convex from slot, 242- cavity, 25- liquid injection hole, 26- keyway, 27- escape, 28-O type ring recess, 3- sealing cover, the inclined-plane 31-, 32-
Ring, 33- tooling hole, 4- shell, the first axle sleeve of 51-, the second axle sleeve of 52-, 6- sealing fluid, 91-O type circle, the first plug screw of 92-, 93-
Second plug screw, 94- round nut.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of coaxial twayblade gas barrier sealing device, including main shaft 1, sealing wheel 2,3 and of sealing cover
Shell 4, in 4 end of shell, main shaft 1 passes through sealing cover 3 and connects external rotation driving the setting of sealing cover 3, is arranged sealing on main shaft 1
Wheel 2, sealing wheel 2 are located in sealing cover 3 covers, and as shown in Figure 2,3, sealing wheel 2 includes wheel body 21, outer ring blade 22 and inner ring blade
23, outer ring blade 22 and inner ring blade 23 are arranged at wheel body 21 towards on a side end face of sealing cover 3, outer ring blade 22 and interior
Ring blade 23 is circlewise distributed and centered on main shaft 1, outer ring blade 22 and inner ring blade 23 after main shaft 1 drives rotation,
22 centrifugal pump gas of outer ring blade, 23 centripetal discharge pump gas of inner ring blade are arranged on wheel body 21 and the contact surface of main shaft 1 as shown in Fig. 4,6
O-ring 91.
This sealing device uses on the stirred tank for for example having sealing demand, or on the blower of the unconventional gas of transport,
Dielectric gas in device is kept apart with outside atmosphere, because being equipment, dynamic sealing certainly will be related in end, and is directly made
Main shaft 1 is embraced with a sealing ring, because being that the different component of sound is in contact, has larger friction, loss power can still connect
It receives, but the amount of heat generated that rubs can not distribute in time, local temperature rise is very big, not only influences seal clearance, also results in mill
Damage occurs, and frequently, main shaft 1 directly uses the line shaft of equipment for maintenance, and shell 4 is also a part of original machine, it is only necessary into
Row small transformation processes positioning spigot in 4 end of shell when transformation, sealing cover 3 is allowed accurately to be installed to shell 4 just,
Setting sealing ring carries out static seal on the contact surface of sealing cover 3 and shell 4.
Sealing wheel 2 is arranged on main shaft 1 and main shaft 1 is followed to rotate, using rotary power as sealed motive force, such as Fig. 1,3 institutes
Show, outer ring blade 22 and inner ring blade 23 rouse body of supplying gas toward two sides respectively, and the drum in machine cavity of outer ring blade 22 is sent, and inner ring leaf
Piece 23 toward atmospheric side drum give, sent by the drum of twayblade twocouese, allow two parts gas carried out on the middle position of blade every
From, outer ring blade 22 is centrifugal pump gas, it is similar with the blade shape of centrifugal blower, and need gas to carry out on inner ring blade 23
Centripetal flow narrows the blade path at relatively large radius so being specifically designed, and makes the blade at small radii logical
Road is wider, so that rebound can be extruded after gas centrifugation movement, and toward centripetal guiding on blade windward side, as shown in figure 3, In
Blade and inner circle are tangent at least radius, and gas carries out centripetal flow, outer ring blade 22 and inner ring blade under such double action
23 rouse body of supplying gas toward both direction respectively, generate isolation strip in intersection, to reach dynamic sealing effect.Certainly, this dynamic sealing
Sealing force be not it is very big, different sealing forces can be obtained by being taken turns by the way that different size of sealing is arranged, but can not be unlimited
Increase, so, the application of the present apparatus is the closed stirred tank or blower of normal pressure or minute-pressure.
As shown in Figure 2,4, the blade height gradual change of outer ring blade 22, the blade height of outer ring blade 22 is close to inner ring blade
23 side is lower than the side far from inner ring blade 23, and the blade of the blade height gradual change of inner ring blade 23, inner ring blade 23 is high
It spends the side close to outer ring blade 22 and is lower than the side far from outer ring blade 22；On the blade of outer ring blade 22 and inner ring blade 23
Along being also obliquely installed, along concaving towards mutual position, 3 direction of sealing cover on the blade of outer ring blade 22 and inner ring blade 23
It is arranged on the blade of inclined-plane 31, inclined-plane 31 and outer ring blade 22 and inner ring blade 23 on the interior table end face of sealing wheel 2 along inclination journey
Degree matches, and the gap on edge is 0.1 ~ 0.3mm on inclined-plane 31 and blade.
The blade height gradual change of outer ring blade 22 and inner ring blade 23, and the side being located remotely from each other is higher, it is close to each other
Side it is lower, constitute the channel of gradual change area again in this way on runner, the outlet end passageways area of respective blade is big, close
One end aisle spare of isolation strip is small, so that gas is more difficult to reach isolation strip, enhances sealing effect；And edge on inclined-plane 31 and blade
Inclined setting is then difficulty of processing in order to reduce inner and outer ring blade, if on blade along be it is conplane, in order to
Achieve the purpose that blade height gradual change, it is necessary to mill out the blade separate slot of depth gradual change, while blade is curved blade, this is being milled
Difficulty is very big when cutting processing, and first processes the inner and outer ring blade of identical blade height, then goes out one tiltedly by lathe vehicle
Face is then that difficulty of processing substantially reduces come the blade for obtaining highly gradient.
As shown in figures 1,4 and 5, main shaft 1 is arranged vertically, and sealing wheel 2 further includes separate cavities 24 and liquid injection hole 25, separate cavities 24
Wheel body 21 is set towards the side of sealing cover 3, separate cavities 24 include slot 241 and cavity 242, and 241 upper end of slot is located at wheel
21 upper surface of body, between outer ring blade 22 and inner ring blade 23, cavity 242 is located inside wheel body 21, and cavity 242 is in level
It is located at 241 outer ring of slot on face and is connected to by a channel of bottom, the side of wheel body 21 is disposed radially liquid injection hole
25, liquid injection hole 25 connects cavity 242, and liquid injection hole 25 is threaded hole, is marked with sealing fluid 6 in separate cavities 24, sealing cover 3 further includes setting
The bulge loop 32 on the end face towards sealing wheel 2 is set, bulge loop 32 is inserted into slot 241, and sealing fluid 6 floods bulge loop under stationary state
32 bottoms；As shown in fig. 7, tooling hole 33 is arranged in 3 side of sealing cover, 33 axis of tooling hole and 25 axis of liquid injection hole are located at same flat
In face, tooling hole 33 is greater than liquid injection hole 25, and liquid injection hole 25 is blocked using the first plug screw 92, and tooling hole 33 uses 93 envelope of the second plug screw
It is stifled.
The dynamic sealing of inner and outer ring blade can only be sealed when main shaft 1 rotates, close when machine down, main shaft 1 stall
It seals power to disappear, if still needing interior external seal when shutting down, it is necessary to which the static seal of auxiliary uses sealing ring after can be shutdown
Main shaft 1 is filled up on the gap of sealing cover 3, but come cannot be timely for this mode one, two need manual operations, trouble.Institute
Sealing when sealing fluid 6 goes to be shut down further is provided with the present apparatus, the bulge loop 32 on 3 inner surface of sealing cover is when shutting down
It is flooded by sealing fluid 6, comes, can not contact so that the gas and atmosphere in machine have been isolated by bulge loop 32.Slot 241 and appearance
It is all marked with some sealing fluids 6 in chamber 242 and is connected state, in machine operation, the rotation of main shaft 1, sealing fluid 6 is due to centrifugation
Power is got rid of toward cavity 242, so that the liquid level in slot 241 declines, sealing fluid 6 is contacted with the disconnection of bulge loop 32, so as to the rotation of main shaft 1
Turn smooth, if sealing fluid 6 is still contacted with bulge loop 32 when main shaft 1 rotates, then liquid-solid sound contact, rotation can be constituted
Resistance is larger, still has larger friction and generates heat, so the setting of cavity 242 is exactly to allow this one of static seal in machine
Device disengages in time when running.
Liquid injection hole 25 is the channel of extraneous injection sealing fluid 6, and after device all assembles, liquid injection pipe sequentially passes through tooling
Hole 33, liquid injection hole 25 add sealing fluid 6, the first plug screw 92 and the second plug screw 93 difference liquid injection hole 25 and tooling in cavity 242
Extraction is protruded into for tool in hole 33, so tooling hole 33 is greater than liquid injection hole 25.
As shown in Fig. 2,5, liquid injection hole 25 is horizontally disposed, and liquid injection hole 25 connects the bottom of cavity 242.The connection of liquid injection hole 25 is held
The bottom of chamber 242 facilitates the extraneous liquid level that sealing fluid 6 in cavity 242 is learnt when adding sealing fluid 6, cannot add, can not
It cannot add less, it is 6 amount of sealing fluid that sealing fluid 6, which did not had 32 bottom of bulge loop, when sealing fluid 6 disengages bulge loop 32, shuts down when machine is run
Demand, and behind the bottom of the connection cavity 242 of liquid injection hole 25, liquid injection pipe is just needed using thread head, and is needed when taking out
Slightly reversed dip machine, sealing fluid 6 will not be flowed out from liquid injection hole 25 when to extract liquid injection pipe out.
Sealing wheel 2 and main shaft 1 are sequentially connected.The axial direction that sealing wheel 2 relies solely on two sides holds out against positioning also can be from main shaft 1
Rotary power is obtained, but it is unreliable there may be sliding or being driven, and the dynamic seal of inner and outer ring blade needs biggish turn
Speed, so sealing wheel 2 may insure that rotation is transmitted on sealing wheel 2 with the transmission connection of main shaft 1.
As shown in Figure 1, 2, sealing wheel 2 and main shaft 1 are driven by key, and keyway 26, keyway 26 are arranged in 21 centre bore of wheel body
For half through slot, the open end of keyway 26 is located at 21 lower end surface of wheel body, and the upper end of keyway 26 processes escape 27,21 centre bore of wheel body
O-ring slot 28 is inside also set up, O-ring 91 is located in O-ring slot 28, and O-ring slot 28 is located at the top of keyway 26.
Key transmission is a kind of convenient driving form of setting, and O-shaped due to also needing to be arranged between sealing wheel 2 and main shaft 1
Circle 91, keyway 26 cannot be all-pass slot, and not so O-ring 91 can not just seal up the gap at keyway, so keyway 26 can only
Half slot form, as shown in Fig. 2, again because sealing wheel 2 assembling process be from top to bottom put on main shaft 1, shown keyway
26 will downward, the bad processing in end of half through slot in hole, so processing one of escape 27 in end meets processing technology.
As a shown in Figure 6, sealing wheel 2 is positioned on main shaft 1 by hub form, and pass through screw-threaded coupling: sealing device is also
Including the first axle sleeve 51 and the second axle sleeve 52, the first axle sleeve 51 and the second axle sleeve 52 are set on main shaft 1,51 He of the first axle sleeve
Second axle sleeve 52 bears against the both ends of sealing wheel 2, and the axle sleeve close to rotation driving is by screwing the round nut 94 on main shaft 1
It compresses.Sealing wheel 2 needs to carry out axially position on main shaft 1, can be the shaft shoulder and the forms such as retaining ring is added to position, be also possible to axle sleeve
Form has several working plates on main shaft 1, and sealing wheel 2 is one of them, can be impeller in blower down, in stirred tank down
It can be the components such as stirring wheel, axle sleeve be added between the acting component on main shaft 1 and is positioned, one is easy to assembly, and two
Registration, after all driven member two sides are compacted on main shaft 1, all parts will not shake.
As shown in Figure 1, tooling hole 33 and liquid injection hole 25 respectively there are two, two tooling holes 33 are axis centre with main shaft 1
Symmetrically, two liquid injection holes 25 are that axis centre is symmetrical with main shaft 1.Tooling hole 33 and liquid injection hole 25 can be protected there are two one respectively
The rotation dynamic balancing of card sealing wheel 2, two can clear up some impurity dusts in separate cavities 24, because when machine down, greatly
Some dusts in gas, which may be fallen to along gap on inner ring blade 23, then to be fallen into separate cavities 24, and accumulate gradually also energy product
Tire out more, until because of sealing effect, and the external world can periodically connect two liquid injection holes 25, rinse separate cavities with low speed water
24, take away dust debris.
The main of the present apparatus is using principle: after machine startup, main shaft 1 rotates, and sealing wheel 2 follows rotation, later outer ring
Blade 22 rouses body of supplying gas in machine, and inner ring blade 23 rouses body of supplying gas toward outside atmosphere, makes at the intermediate position of inner and outer ring blade
Making both sides gas at isolation strip can not reach, and realize dynamic sealing when operation.When machine down, 2 stalling of sealing wheel, isolation
Sealing fluid 6 floods 32 lower edge of bulge loop in chamber 24, and gas can not contact inside and outside machine, realizes static seal when shutting down.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (9)
1. a kind of coaxial twayblade gas barrier sealing device, it is characterised in that: the sealing device includes main shaft (1), sealing
(2), sealing cover (3) and shell (4) are taken turns, in shell (4) end, the main shaft (1) passes through sealing cover for sealing cover (3) setting
(3) connection is external rotates driving, and sealing wheel (2) is arranged on main shaft (1), and sealing is taken turns (2) and is located in sealing cover (3) lid, sealing wheel
(2) the contrary radially bending blade of two groups of air guides is equipped with towards the end face of sealing cover (3).
2. a kind of coaxial twayblade gas barrier sealing device according to claim 1, it is characterised in that: the sealing wheel
It (2) include wheel body (21), outer ring blade (22) and inner ring blade (23), the outer ring blade (22) and inner ring blade (23) are all provided with
It sets in wheel body (21) towards on a side end face of sealing cover (3), outer ring blade (22) and inner ring blade (23) are circlewise distributed simultaneously
Centered on main shaft (1), outer ring blade (22) and inner ring blade (23) are after main shaft (1) drives rotation, outer ring blade (22)
O-ring (91) are set on centrifugal pump gas, inner ring blade (23) centripetal discharge pump gas, wheel body (21) and the contact surface of main shaft (1).
3. a kind of coaxial twayblade gas barrier sealing device according to claim 2, it is characterised in that: the outer ring leaf
The blade height of the blade height gradual change of piece (22), outer ring blade (22) is lower than close to the side of inner ring blade (23) far from inner ring
The side of blade (23), the blade height gradual change of the inner ring blade (23), the blade height of inner ring blade (23) is close to outer ring
The side of blade (22) is lower than the side far from outer ring blade (22)；Edge on the blade of outer ring blade (22) and inner ring blade (23)
It is also obliquely installed, along concaving towards mutual position, sealing cover (3) on the blade of outer ring blade (22) and inner ring blade (23)
Inclined-plane (31) are set on towards the interior table end face of sealing wheel (2), the inclined-plane (31) and outer ring blade (22) and inner ring blade
(23) match on blade along inclined degree.
4. a kind of coaxial twayblade gas barrier sealing device according to claim 3, it is characterised in that: the main shaft
(1) vertical arrangement, the sealing wheel (2) further include separate cavities (24) and liquid injection hole (25), and separate cavities (24) setting is being taken turns
For body (21) towards the side of sealing cover (3), separate cavities (24) include slot (241) and cavity (242), on the slot (241)
End is located at wheel body (21) upper surface, between outer ring blade (22) and inner ring blade (23), and cavity (242) is located at wheel body (21)
Inside, cavity (242) are located at slot (241) outer ring in the horizontal plane and are connected to by a channel of bottom, wheel body
(21) side is disposed radially liquid injection hole (25), and the liquid injection hole (25) connects cavity (242), and liquid injection hole (25) is screw thread
Hole, the separate cavities (24) are interior to be marked with sealing fluid (6), and the sealing cover (3) further includes setting in the end face towards sealing wheel (2)
On bulge loop (32), in the bulge loop (32) insertion slot (241), sealing fluid (6) floods bulge loop (32) bottom under stationary state；
Tooling hole (33) are arranged in sealing cover (3) side, and tooling hole (33) axis and liquid injection hole (25) axis are located at same put down
In face, the tooling hole (33) is greater than liquid injection hole (25), and the liquid injection hole (25) is blocked using the first plug screw (92), the tooling
Hole (33) is blocked using the second plug screw (93).
5. a kind of coaxial twayblade gas barrier sealing device according to claim 4, it is characterised in that: the liquid injection hole
(25) it is horizontally disposed with, liquid injection hole (25) connects the bottom of cavity (242).
6. a kind of coaxial twayblade gas barrier sealing device according to claim 4, it is characterised in that: the sealing wheel
(2) it is sequentially connected with main shaft (1).
7. a kind of coaxial twayblade gas barrier sealing device according to claim 6, it is characterised in that: the sealing wheel
(2) it is driven with main shaft (1) by key, keyway (26) is set in wheel body (21) centre bore, keyway (26) is half through slot, keyway
(26) open end is located at wheel body (21) lower end surface, and the upper end of keyway (26) processes escape (27), in wheel body (21) centre bore
It also sets up O-ring slot (28), the O-ring (91) is located in O-ring slot (28), and the O-ring slot (28) is located at keyway (26)
Top.
8. a kind of coaxial twayblade gas barrier sealing device according to claim 1, it is characterised in that: the sealing wheel
(2) on main shaft (1) by hub form position, pass through screw-threaded coupling: the sealing device further include the first axle sleeve (51) and
Second axle sleeve (52), first axle sleeve (51) and the second axle sleeve (52) are set on main shaft (1), the first axle sleeve (51) and
Two axle sleeves (52) bear against the both ends of sealing wheel (2), and the axle sleeve close to rotation driving is by screwing the circle spiral shell on main shaft (1)
Female (94) compress.
9. a kind of coaxial twayblade gas barrier sealing device according to claim 4, it is characterised in that: the tooling hole
(33) and liquid injection hole (25) respectively there are two, two tooling holes (33) with main shaft (1) be axis centre it is symmetrical, two liquid injection holes
It (25) is that axis centre is symmetrical with main shaft (1).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010379834.3A CN111706529B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
| CN202010379839.6A CN111706530B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
| CN201910768155.2A CN110425286B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768155.2A CN110425286B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010379839.6A Division CN111706530B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
| CN202010379834.3A Division CN111706529B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN110425286A true CN110425286A (en) | 2019-11-08 |
| CN110425286B CN110425286B (en) | 2020-07-03 |
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ID=68417059
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010379834.3A Active CN111706529B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
| CN202010379839.6A Active CN111706530B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
| CN201910768155.2A Active CN110425286B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010379834.3A Active CN111706529B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
| CN202010379839.6A Active CN111706530B (en) | 2019-08-20 | 2019-08-20 | Coaxial double-blade gas isolation sealing device |
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| Country | Link |
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| CN (3) | CN111706529B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB850296A (en) * | 1956-09-13 | 1960-10-05 | Licentia Gmbh | A gas-tight seal between the casing and the revolving shaft of a machine |
| US4270882A (en) * | 1977-02-25 | 1981-06-02 | Ultra-Centrifuge Nederland N.V. | Molecular pump or, respectively, gas-tight sealing arrangement for a body placed in a housing and rapidly rotating about an axis |
| CN201306194Y (en) * | 2008-12-08 | 2009-09-09 | 重庆江增机械有限公司 | Sealing structure for lubricant of supercharger |
| CN102861927A (en) * | 2012-09-25 | 2013-01-09 | 西安交通大学 | Super-high-speed electric main shaft sealing structure adopting water lubricating static pressure bearing |
| CN103062411A (en) * | 2012-12-24 | 2013-04-24 | 浙江工业大学 | Microgroove double-layer composite groove deep end surface mechanical seal structure |
| CN204420108U (en) * | 2014-12-11 | 2015-06-24 | 宁波海天精工股份有限公司 | A kind of electro spindle nose sealing configuration |
| CN109737094A (en) * | 2018-11-13 | 2019-05-10 | 陕西蓝箭航天技术有限公司 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
-
2019
- 2019-08-20 CN CN202010379834.3A patent/CN111706529B/en active Active
- 2019-08-20 CN CN202010379839.6A patent/CN111706530B/en active Active
- 2019-08-20 CN CN201910768155.2A patent/CN110425286B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB850296A (en) * | 1956-09-13 | 1960-10-05 | Licentia Gmbh | A gas-tight seal between the casing and the revolving shaft of a machine |
| US4270882A (en) * | 1977-02-25 | 1981-06-02 | Ultra-Centrifuge Nederland N.V. | Molecular pump or, respectively, gas-tight sealing arrangement for a body placed in a housing and rapidly rotating about an axis |
| CN201306194Y (en) * | 2008-12-08 | 2009-09-09 | 重庆江增机械有限公司 | Sealing structure for lubricant of supercharger |
| CN102861927A (en) * | 2012-09-25 | 2013-01-09 | 西安交通大学 | Super-high-speed electric main shaft sealing structure adopting water lubricating static pressure bearing |
| CN103062411A (en) * | 2012-12-24 | 2013-04-24 | 浙江工业大学 | Microgroove double-layer composite groove deep end surface mechanical seal structure |
| CN204420108U (en) * | 2014-12-11 | 2015-06-24 | 宁波海天精工股份有限公司 | A kind of electro spindle nose sealing configuration |
| CN109737094A (en) * | 2018-11-13 | 2019-05-10 | 陕西蓝箭航天技术有限公司 | Dynamic sealing device and gas-turbine-pump combination for turbine pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|
| CN111706530B (en) | 2021-06-29 |
| CN111706529A (en) | 2020-09-25 |
| CN111706529B (en) | 2021-06-29 |
| CN111706530A (en) | 2020-09-25 |
| CN110425286B (en) | 2020-07-03 |
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