CN207278884U - A kind of mechanically-sealing apparatus for high speed sand mill - Google Patents
A kind of mechanically-sealing apparatus for high speed sand mill Download PDFInfo
- Publication number
- CN207278884U CN207278884U CN201721092460.7U CN201721092460U CN207278884U CN 207278884 U CN207278884 U CN 207278884U CN 201721092460 U CN201721092460 U CN 201721092460U CN 207278884 U CN207278884 U CN 207278884U
- Authority
- CN
- China
- Prior art keywords
- ring
- axle sleeve
- seal
- interior
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sealing Devices (AREA)
Abstract
A kind of mechanically-sealing apparatus for high speed sand mill is the utility model is related to, including outer press cover, internal gland and axle sleeve, outer press cover and internal gland are set on axle sleeve, are connected by screw between outer press cover and internal gland, axle sleeve right end is provided with interior rotating ring；Internal gland right end is arranged with interior static components；Interior static components right side is bonded with interior rotating ring left side, to form primary seal；The interior moving ring assembly being sheathed on axle sleeve is provided with gap between axle sleeve and outer press cover；Outer static components are provided with outer press cover；Outer moving ring assembly left side is bonded with outer static components right side, to form security seal；A separation sleeve is provided with gap between internal gland, outer press cover and axle sleeve；An annular seal space is formed between separation sleeve and internal gland, annular seal space is connected with inlet opening, and annular seal space is connected with the flowing hole inside internal gland, to form fluid loop；The mechanically-sealing apparatus of the utility model is used for the device of high-speed rotation, and seal face is hardly damaged, and service life is longer.
Description
Technical field
The utility model belongs to technical field of mechanical, and in particular to a kind of mechanical seal for high speed sand mill fills
Put.
Background technology
Sand mill is widely used in the stirring polishing operation of the industries such as food, petrochemical industry, emulsification, paint, its conventional seals is
Filler, single end face or Double End spring type mechanical sealing device.Especially in the nanometer materials field of new energy, sand mill industry
Development is very swift and violent.With the raising of technique and throughput requirements, each manufacturer develops rotating speed in 3000rpm~15000rpm successively
Sand mill product, but be limited to the limitation of existing machinery sealing technique used, development test operational effect is unsatisfactory, main
There are problems with：
1st, the mechanical seal currently used for sand mill generally uses unbalanced type mechanical seal, the reason for why using its
It is simple in structure.But this kind of shortcoming of being sealed with：It is exactly that sealing system and pressure medium fluctuation influence to compare on sealing performance
Greatly, it is poor to seal adaptive ability, it is short to seal service life.
Unbalanced type mechanical seal, refers to that pressure medium acts on the projected area of seal face and effectively connect with seal face
The ratio of contacting surface product>1, i.e. loading coefficient K>1, face pressure increases and increases sharply with pressure medium, and pressure medium is sealing
It cannot be unloaded on end face, the operating mode of undercut stabilization is compared applied to sealing system pressure.
Balanced mechanical seal, pressure medium act on the projected area and the effective contact area of seal face of seal face
Ratio be less than 1, i.e. loading coefficient K<1, pressure medium causes unloading on seal face, can all or part of balance media
Effect of the pressure to end face, the operating mode more complicated applied to sealing system pressure.
2nd, unbalanced type mechanical seal cannot be used for revolution at a high speed operating mode, and it is below 3000rpm to adapt to general device rotating speed,
What this was mainly determined by seal load ability parameter PV values.
PV values, the product for the peripheral speed V that be averaged for seal face than pressure Pb and sealing surface, illustrates the pair that rubs during mechanical seal work
The size of load carrying capacity on unit area, and a kind of composite target, the abrasion of mechanical seal, power consumption, temperature rise with
Its is related.
3rd, since sealing rotating speed is very high, seal face is in spite of liquid-film lubrication, but frictional heat produces very big, general sealing
System self-loopa effect will be very poor, and seal face is easily damaged.
4th, it is very high to device fabrication required precision for the equipment of high-speed cruising, also to the manufacture and assembling of mechanical seal
Required precision is extremely stringent.
Utility model content
In order to solve to exist in the prior art, unbalanced type mechanical seal service life is short, cannot be used for revolution at a high speed work
Condition, seal face technical problem, the utility model such as are easily damaged and provide following technical scheme：
A kind of mechanically-sealing apparatus for high speed sand mill, including outer press cover, internal gland and for being set in agitating shaft
On axle sleeve, the outer press cover and internal gland are set on the axle sleeve, are connected between the outer press cover and internal gland by screw
Connect, the axle sleeve right end, which radially encloses, extends to form a bottom wall, and the bottom wall outer ring extends to form a ring to the left vertically
Shape wall, the cavity between the outer wall of the bottom wall, annular wall and the axle sleeve is first annular groove；
Interior rotating ring is provided with the first annular groove, week is realized by positioning pin between the interior rotating ring and the axle sleeve
To anti-rotation, the interior rotating ring left end is provided with a baffle ring being fastened on the axle sleeve；
The second annular groove is provided with the internal gland right side, interior static components are arranged with second annular groove,
Inlet opening is provided with the internal pressure cover outer wall；
The interior static components right side is bonded with the interior rotating ring left side, to form primary seal；
The interior moving ring assembly being sheathed on the axle sleeve is provided with gap between the axle sleeve and the outer press cover；
The 3rd annular groove is provided with the right side of the outer press cover inner ring, is fixedly installed in the 3rd annular groove outer
Static components, are provided with fluid hole on the external pressure cover outer wall；
The outer moving ring assembly left side is bonded with the outer static components right side, to form security seal；
A separation sleeve is provided with gap between the internal gland, outer press cover and the axle sleeve；
The separation sleeve is clamped between the internal gland and outer press cover, to limit its axial displacement；
Circumferential anti-rotation is realized by the positioning pin between the separation sleeve and the internal gland；
An annular seal space is formed between the separation sleeve and the internal gland, the annular seal space is connected with the inlet opening, institute
State annular seal space to connect with the flowing hole inside the internal gland, to form fluid loop.
As the further explanation of the utility model, second annular groove it is parallel with the axle sleeve and with the axle sleeve
Adjacent side wall, its section form from right to left elevated first step portion, second step portion and the 3rd stage portion successively.
As the further explanation of the utility model, the interior static components include stationary seat, embedded ring, the first spring,
First O-ring seal and L-shaped baffle ring；
The stationary seat is sheathed on the side wall of second annular groove, and the of the stationary seat and the side wall
One stage portion, second step portion, the 3rd stage portion are bonded successively, are consolidated between the stationary seat and the internal gland by screw
It is fixed, realize the circumferential anti-rotation between the stationary seat and internal gland；
It is provided with end face between the first step portion and the second step portion, vertical with the axle sleeve axial line
Multiple the first spring eyes being uniformly distributed circumferentially, first spring are installed in first spring eye, first bullet
Spring left end is contradicted and is bonded in the first spring eye bottom, the first spring right end with the stationary seat；
First O-ring seal is arranged between the stationary seat and the second step portion, the first O-shaped sealing
Circle left end is provided with a packing ring, and the packing ring left end contradicts between the second step portion and the 3rd stage portion and the axis
Cover on the vertical end face of axial line；
The L-type baffle ring is arranged between the stationary seat and the 3rd stage portion；
The embedded ring is arranged at the stationary seat right end, and the embedded ring left side and outer wall with the stationary seat
Fitting, the embedded ring right side is bonded with the interior rotating ring left side.
As the further explanation of the utility model, the outer static components include outer stationary ring, second spring, second O-shaped
Sealing ring and throw-out collar；
The outer stationary ring is sheathed in the 3rd annular groove, is consolidated between the outer stationary ring and the outer press cover by screw
It is fixed, to realize the circumferential anti-rotation between the outer stationary ring and the outer press cover；
The outer stationary ring right side is bonded with the outer moving ring assembly, and the outer stationary ring left side is bonded with the throw-out collar；
Multiple axially disposed and circumferentially distributed second spring hole is provided with 3rd annular groove, it is described
Second spring is arranged in the second spring hole, and the second spring right side is bonded with the throw-out collar left side；
Second O-ring seal is arranged between the outer stationary ring, throw-out collar and the 3rd annular groove cell wall.
As the further explanation of the utility model, the outer moving ring assembly includes outer rotating ring, pumping ring, the 3rd O-shaped close
Seal and baffle ring；
The outer rotating ring and pumping are sheathed on the axle sleeve, the outer rotating ring left side outer ring and the outer stationary ring right end
Face paste is closed, and the outer rotating ring right side is bonded with pumping ring left side inner ring；
The baffle ring is fastened on the axle sleeve, and the baffle ring right side is bonded with the outer rotating ring left side inner ring；
The pumping ring right side is contradicted in the stage portion set on the axle sleeve；
3rd O-ring seal is arranged between the outer rotating ring and the axle sleeve.
As the further explanation of the utility model, it is provided between the outer rotating ring and the axle sleeve multiple circumferentially equal
The first steel ball of even distribution, multiple the second steel balls being uniformly distributed circumferentially are provided between the pumping ring and the axle sleeve.
As the further explanation of the utility model, it is described pumping ring outer wall left end be provided with it is multiple axially extend get rid of
Sink, the water dumping groove are uniformly distributed circumferentially；
On the pumping ring outer wall, the water dumping groove right end be provided with throttling channel circumferentially；
On the pumping ring right side, circumferentially distributed there are multiple conduction holes.
As the further explanation of the utility model, annular solution tank is provided with the outer press cover inner wall；The annular
A hydraulic barrier is fixedly installed in solution tank, at liquid outlet.
As the further explanation of the utility model, connector is fixedly installed between the outer press cover and the axle sleeve.
As the further explanation of the utility model, the connector includes axially disposed fixed part and radially sets
The connecting rod put, the connecting rod are fixed on the fixed part right end；
The fixed part is fixedly connected by screw with the internal gland；
The connecting rod is stretched on the annular wall outer wall and set in annular groove.
Compared with prior art, what the utility model obtained has the beneficial effect that：
1st, interior static components are a kind of Bidirectional balance design feature, when system pressure is more stable, sealed fluid pressure
Higher than medium lateral pressure, seal load coefficient is less than 1, and primary seal designs for balanced type, and the thrust for acting on interior stationary ring is first
Spring is by accounting opening by the part thrust of thrust and sealing fluid, sealing surface tends to the trend of interior rotating ring end face closure；Work as system
Pressure transient, particularly when system pressure is because of certain factor decompression, pressure medium will be above sealed fluid pressure, sealing and balancing
Diameter is changed into Db2, and seal load coefficient is less than 1 at this time, is still balanced seal characteristic, acts on the thrust of interior stationary ring at this time
For the part thrust of the first spring thrust and medium, sealing surface tends to the trend of interior rotating ring end face closure.No matter sealing fluid system
And how pressure medium changes, seal face does not have the trend of passive open, can stable operation.High-speed cruising is particularly sealed,
If system pressure is unstable, but is less than 1 in seal load coefficient（That is balanced seal）Under conditions of, seal face is pressurized than pressure
Fluctuation influences very little, and sealing PV value changes are also just relatively small, i.e. sealing adaptability table is stronger, and seal face liquid film is steady
It is fixed, service life length.Solve the shortcomings that sand mill is using traditional unbalanced type sealing, also will sealing running speed carry to
3000rpm~15000rpm scopes, to adapt to demand of the market to novel high speed sand mill, meet industry development needs.
2nd, interior static components use more spring structures to be installed to provide stretch compensation using state type, entirety and outer press cover
Fix, interior stationary ring internal diameter is stamped appropriate gap with internal pressure, is coordinated by sealing ring and L-shaped baffle ring, just can be certainly when equipment is run
The dynamic decentraction situation for adjusting agitating shaft and annular seal space, the followability of sealing surface is good, reduces the bounce of seal in itself, makes
Sealing surface face pressure, liquid film are stablized, so as to extend sealing life；Interior static components prepackage manufactures and designs, and assembling is accurate, peace
Dress is convenient.It adapts to the condition of the large, medium and small diameter of axle in practical applications, can automatically adjust the swing or bounce for adapting to rotation axis,
Elastic force is uniform, and seal face is stablized than pressure, and sealing effect is good.
3rd, outer static components also design for state type, are positioned at by positioning screw prepackage on outer press cover, balanced seal
Design, stretch compensation are suitable for high speed, large-diameter use condition from the influence of high speed centrifugation power.If pumping ring outer radius has
Dry water dumping groove, is designed with a few road throttling channels, to prevent sealing fluid short-circuit cycle on the right side of water dumping groove.Outer rotating ring and pumping ring difference
Transmission is provided by two the first steel balls and two the second steel balls, and steel ball is symmetrical, it is special in favor of the dynamic balancing of high-speed sealing
Property.Whole security seal modular construction is compact, overcomes the shortcomings that conventional balanced type sealing axial dimension is larger.
4th, using system sealing form with pressure, sealing fluid（Also known as obstruct liquid）Pressure be higher than side medium pressure 1-
3.5kgf/cm2, sealing system endless form are tandem circuit, can walk seal face frictional heat and the stirring torrid zone, use
Above-mentioned design greatly improves the cycle efficieny of sealing fluid, improves sealing surface condensate film stability, sealing service life length.
5th, interior rotating ring is provided with baffle ring on the axle sleeve near rotating ring end face, and rotating ring is axially displaced in limitation.When sealing is
Pressure instability unite periodically, when particularly sealed fluid pressure moment is less than pressure medium, according to hydraulic principle, interior rotating ring is by medium pressure
Power has a tiny pick pearl invasion to the displacement of sealing fluid side at interior the 4th O-ring seal of rotating ring, when rotating ring floatability be deteriorated, impurity
It is easy to invade dynamic and static ring friction pair, furthermore rotating ring is difficult to reset when sealed fluid pressure recovers.After baffle ring is set, can effectively it limit
Interior rotating ring displacement, impurity are also difficult to invade rotating ring floating position.Sealing ring floatability is excellent, and operational effect is good.
The utility model is described in further details below with reference to accompanying drawings and embodiments.
Brief description of the drawings
Fig. 1 is mechanically-sealing apparatus sectional view.
Fig. 2 is mechanically-sealing apparatus side view.
Fig. 3 is mounting structure schematic diagram between the static seal component of mechanically-sealing apparatus and internal gland.
Fig. 4 is the pumping ring sectional view of mechanically-sealing apparatus.
Fig. 5 is the pumping ring stereogram of mechanically-sealing apparatus.
Fig. 6 is the specific sectional view of mechanically-sealing apparatus.
Fig. 7 is the hydraulic barrier lateral partial structurtes sectional view of mechanically-sealing apparatus.
In figure：1st, outer press cover；2nd, internal gland；3rd, agitating shaft；4th, axle sleeve；5th, bottom wall；6th, annular wall；7th, first annular groove；
8th, interior rotating ring；9th, baffle ring；10th, the second annular groove；11st, inlet opening；12nd, the 3rd annular groove；13rd, fluid hole；14th, separation sleeve；15、
Annular seal space；16th, flowing hole；17th, first step portion；18th, second step portion；19th, the 3rd stage portion；20th, stationary seat；21st, inlay
Ring；22nd, the first spring；23rd, the first O-ring seal；24th, L-shaped baffle ring；25th, packing ring；26th, outer stationary ring；27th, second spring；28、
Second O-ring seal；29th, throw-out collar；30th, outer rotating ring；31st, ring is pumped；32nd, the 3rd O-ring seal；33rd, baffle ring；34th, the first steel
Ball；35th, the second steel ball；36th, water dumping groove；37th, throttling channel；38th, conduction hole；39th, annular solution tank；40th, hydraulic barrier；41st, even
Fitting；42nd, fixed part；43rd, connecting rod；44th, the 4th O-ring seal；45th, the 6th O-ring seal；46th, the 5th O-ring seal；
47th, mixing drum；48th, paddle；49th, pressing device；50th, annular groove；51st, sealed support.
Embodiment
For the technological means and effect that the utility model is reached predetermined purpose and taken is expanded on further, below in conjunction with attached drawing
And embodiment describes as follows specific embodiment of the present utility model, architectural feature and its effect in detail.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.
In addition, term " first ", " second ", " the 3rd " etc. are only used for description purpose, and it is not intended that instruction or hint
Relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature of " first ", " second " etc. is defined
It can express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated,
" multiple " are meant that two or more.
Term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or removable
Connection is unloaded, or is integrally connected；Can mechanically connect or be electrically connected；It can be directly connected, can also be in
Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through
Concrete condition understands concrete meaning of the above-mentioned term in the invention.
The mechanically-sealing apparatus for high speed sand mill as shown in Figure 1 and Figure 2, including outer press cover 1, internal gland 2 and be used for
The axle sleeve 4 being set on agitating shaft 3, outer press cover 1 and internal gland 2 are set on axle sleeve 4, are passed through between outer press cover 1 and internal gland 2
Screw connects, and 4 right end of axle sleeve, which radially encloses, extends to form a bottom wall 5, and 5 outer ring of bottom wall extends to form a ring to the left vertically
Shape wall 6, the cavity between the outer wall of bottom wall 5, annular wall 6 and axle sleeve 4 is first annular groove 7；In being provided with first annular groove 7
Rotating ring 8, circumferential anti-rotation is realized between interior rotating ring 8 and axle sleeve 4 by positioning pin, and interior 8 left end of rotating ring is provided with one and is fastened in axle sleeve 4
On baffle ring 9；The second annular groove 10 is provided with 2 right side of internal gland, interior static components are arranged with the second annular groove 10, it is interior
Inlet opening 11 is provided with 2 outer wall of gland；Interior static components right side is bonded with interior 8 left side of rotating ring, to form primary seal.
8 component of interior rotating ring being sheathed on axle sleeve 4 is provided with gap between axle sleeve 4 and outer press cover 1；In outer press cover 1
The 3rd annular groove 12 is provided with the right side of circle, is fixedly installed outer 26 component of stationary ring in the 3rd annular groove 12, outside outer press cover 1
Fluid hole 13 is provided with wall；Outer 30 component left side of rotating ring is bonded with outer 26 component right side of stationary ring, to form security seal.
A separation sleeve 14 is provided with gap between internal gland 2, outer press cover 1 and axle sleeve 4；Separation sleeve 14 is clamped in internal pressure
Between lid 2 and outer press cover 1, to limit its axial displacement；Realized by positioning pin between separation sleeve 14 and internal gland 2 and circumferentially prevented
Turn；An annular seal space 15 is formed between separation sleeve 14 and internal gland 2, annular seal space 15 is connected with inlet opening 11, annular seal space 15 and internal pressure
Flowing hole 16 inside lid 2 connects, to form fluid loop.
Preferably, the second annular groove 10 side wall parallel with axle sleeve 4 and adjacent with axle sleeve 4, its section are formed from right to left
Elevated first step portion 17,18 and the 3rd stage portion 19 of second step portion successively, as shown in Figure 3.
As shown in figure 3, interior static components include stationary seat 20, embedded ring 21, the first spring 22, the first O-ring seal 23
With L-shaped baffle ring 24；Stationary seat 20 is sheathed on the side wall of the second annular groove 10, and the first step of stationary seat 20 and above-mentioned side wall
Portion 17, second step portion 18, the 3rd stage portion 19 are bonded successively, are fixed between stationary seat 20 and internal gland 2 by screw, are realized
Circumferential anti-rotation between stationary seat 20 and internal gland 2.
Multiple edges are provided with end face between first step portion 17 and second step portion 18, vertical with 4 axial line of axle sleeve
Circumferential equally distributed first spring eye（Drawing is unmarked）, the first spring 22 is installed in the first spring eye, the first spring 22
Left end is contradicted and is bonded in the first spring eye bottom, 22 right end of the first spring with stationary seat 20.
First O-ring seal 23 is arranged between stationary seat 20 and second step portion 18, and 23 left end of the first O-ring seal is set
It is equipped with a packing ring 25,25 left end of packing ring contradicts between 18 and the 3rd stage portion 19 of second step portion, is vertical with 4 axial line of axle sleeve
End face on, i.e., the first O-ring seal 23 and packing ring 25 are sheathed in the second step portion 18；L-type baffle ring 33 is arranged at quiet
Between 20 and the 3rd stage portion 19 of ring seat, i.e., the L-type baffle ring 33 is sheathed in the 3rd stage portion 19；Embedded ring 21 is arranged at stationary ring
20 right ends of seat, and 21 left side of embedded ring and outer wall are bonded with stationary seat 20,21 right side of embedded ring and interior 8 left side of rotating ring
Fitting.
, can first will be above-mentioned when assembling side medium primary seal due to being positioned between internal gland 2 and interior stationary ring by screw
Each parts of interior static components are accurately pre-installed, and without adjusting 22 decrement of the first spring again, reach accurate installation
Purpose, while be also in static components anti-rotation device.
Preferably, interior stationary ring is a kind of Bidirectional balance design feature, as shown in figure 3, when system pressure is more stable,
Sealed fluid pressure is higher than medium lateral pressure, seal load COEFFICIENT K 1=(d12-Db12)/ (d12-D22)<1, i.e. primary seal is balance
Type designs, and acts on the thrust of interior stationary ring and tends to interior rotating ring 8 for 22 thrust of the first spring and the part thrust of sealing fluid, sealing surface
The trend of end face closure；When system pressure is unstable, particularly when system pressure is because of certain factor decompression, pressure medium is by height
In sealed fluid pressure, sealing and balancing diameter is changed into Db2, at this time seal load COEFFICIENT K 1=(Db22-d22)/(d12-D22)<1, according to
Be so balanced seal characteristic, the thrust for acting on interior stationary ring at this time is the part thrust of 22 thrust of the first spring and medium, close
Front cover tends to the trend of interior 8 end face of rotating ring closure.So no matter how sealing fluid system and pressure medium change, seal face does not have
There is the trend of passive open, can stable operation.High-speed cruising is particularly sealed, if system pressure is unstable, but in seal load
Coefficient is less than 1（Balanced seal）Under conditions of, seal face is stressed influence of fluctuations very little than pressure, and sealing PV values change
Relatively small, i.e. sealing adaptability table is stronger, and seal face liquid film is stablized, service life length.（Note：Such as Fig. 3 institutes in formula
Show, d1> Db2> Db1>d2）.
Interior rotating ring 8 is assemblied in the first annular groove 7 of 4 right end of side medium axle sleeve by the way that the 4th O-ring seal 44 is floating type,
Primary seal is formed with together with interior static components, medium and sealing fluid are kept apart.A baffle ring 9 is covered with interior 8 outer wall of rotating ring,
Positioned at interior 8 left end of rotating ring；When the timing of sealing system pressure instability, when particularly sealed fluid pressure moment is less than pressure medium, root
According to hydraulic principle, to the displacement of sealing fluid side, tiny pick is had at interior the 4th O-ring seal 44 of rotating ring 8 by pressure medium for interior rotating ring 8
Pearl is invaded, when rotating ring floatability be deteriorated, it is secondary that impurity is easy to invade dynamic and static ring friction, furthermore rotating ring is difficult to when sealed fluid pressure recovers
Reset, prevent the back-pressure that the internal rotating ring 8 of medium produces after sealing system decompression from making interior rotating ring 8 axially displaced by baffle ring 9 at this time,
Impurity is also difficult to invade interior 8 floating position of rotating ring, makes sealing ring floatability excellent, operational effect is good.
Further, interior 8 end face effective diameter of rotating ring and interior stationary ring end face outside diameter etc. are big, and 8 end face effective diameter of interior rotating ring
There is a conical surface in outside, as shown in Figure 1, the impurity be conducive in medium is quickly thrown away, avoids the tiny hard abrasive in impurity from illegally occupying
And invasion abrasive end face.
As shown in Figure 1, outer 26 component of stationary ring includes outer stationary ring 26, second spring 27, the second O-ring seal 28 and throw-out collar
29；Outer stationary ring 26 is sheathed in the 3rd annular groove 12, is fixed between outer stationary ring 26 and outer press cover 1 by screw, outer quiet to realize
Circumferential anti-rotation between ring 26 and outer press cover 1；Outer 26 right side of stationary ring and outer 30 component joint of rotating ring, outer 26 left side of stationary ring with
Throw-out collar 29 is bonded；It is provided with multiple axially disposed and circumferentially distributed second spring hole in 3rd annular groove 12, second
Spring 27 is arranged at second spring hole（It is unmarked in figure）, 27 right side of second spring is bonded with 29 left side of throw-out collar；Second is O-shaped
Sealing ring 28 is arranged between outer stationary ring 26,12 cell wall of throw-out collar 29 and the 3rd annular groove.
Above-mentioned 26 component of outer stationary ring can be preloaded onto on outer press cover 1 in advance by positioning screw, and outer 26 component of stationary ring is flat
Weighing apparatus type Seal Design, be suitable at a high speed, large-diameter use condition, the stretch compensation of outer 26 component of stationary ring is by second spring 27 and close
Sealing liquid pressure provides.
As shown in Figure 1, outer 30 component of rotating ring includes outer rotating ring 30, pumping ring 31, the 3rd O-ring seal 32 and baffle ring 33；
Outer rotating ring 30 and pumping are sheathed on axle sleeve 4, and outer 30 left side outer ring of rotating ring is bonded with outer 26 right side of stationary ring, and outer rotating ring 30 is right
End face is bonded with pumping 31 left side inner ring of ring；Baffle ring 33 is fastened on axle sleeve 4,33 right side of baffle ring and outer 30 left side of rotating ring
Inner ring is bonded；31 right side of pumping ring is contradicted in the stage portion set on axle sleeve 4；3rd O-ring seal 32 is arranged at outer dynamic
Between ring 30 and axle sleeve 4.
Preferably, be provided between outer rotating ring 30 and axle sleeve 4 it is multiple be uniformly distributed circumferentially the first steel ball 34, pump ring 31
Multiple the second steel balls 35 being uniformly distributed circumferentially are provided between axle sleeve 4, in favor of the dynamic balance property of high-speed sealing.
Preferably, as shown in Figure 4, Figure 5, pumping 31 outer wall left end of ring is provided with multiple water dumping grooves 36 axially extended,
Water dumping groove 36 is uniformly distributed circumferentially；On pumping 31 outer wall of ring, 36 right end of water dumping groove be provided with throttling channel 37 circumferentially,
With tissue encapsulation liquid short-circuit cycle；On pumping ring 31 right side, circumferentially distributed there are multiple conduction holes 38.
Preferably, as shown in fig. 6, being provided with annular solution tank 39 on 1 inner wall of outer press cover；In annular solution tank 39, go out liquid
A hydraulic barrier 40 is fixedly installed at mouthful, when sealing fluid flow to 40 seamed edge of hydraulic barrier, as shown in fig. 7, being kept off by the baffling
Plate 40 blocks the movement of sealing fluid circumferencial direction, so as to produce high pressure, sealing fluid is flowed out by liquid outlet 13, hydraulic barrier 40 with it is outer
It is welding between 1 inner wall of gland.
Connector 41 is fixedly installed between outer press cover 1 and axle sleeve 4, as shown in Figure 1, connector 41 is including axially disposed
Fixed part 42 and the connecting rod 43 that is disposed radially, connecting rod 43 be fixed on 42 right end of fixed part；Fixed part 42 passes through screw
It is fixedly connected with internal gland 2；Connecting rod 43 is stretched on 6 outer wall of annular wall and set in annular groove 50, passes through fixation portions 42
It is with connecting rod 43 that the mechanically-sealing apparatus prepackage of the present embodiment is even integral, when which is installed to equipment
Amount of spring compression need not be adjusted.
Preferably, the 6th O-ring seal 45 is provided between above-mentioned internal gland 2 and outer press cover 1, and is linked to be by screw
One, the whole series are sealingly fastened on sealed support 51, the 5th O-ring seal 46, shape are provided between axle sleeve 4 and agitating shaft 3
Into opposite static seal；Due to being revolution at a high speed equipment, the transmission of the whole series sealing is to pass through the step and agitating shaft on 4 inner wall of axle sleeve
Step on 3 cooperates, then 49 locking axle sleeve 4 of pressing device carried by equipment forms driving, the i.e. outside diameter of agitating shaft 3
Internal diameter with axle sleeve 4 is change, but the two size cooperates, to ensure when mounted, outer wall and the axle sleeve 4 of agitating shaft 3
Inner wall is bonded completely.
Sealing fluid（Also known as insulating liquid）Circulating path：Sealing fluid enters annular seal space 15 by the inlet on internal gland 2, this
Cavity is formed by separation sleeve 14 and internal gland 2, then most right by some arrival internal glands 2 of flowing holes 16 for being arranged in internal gland 2
Gap between side and interior stationary ring, then near sealing fluid inflow primary seal end face, the heat for the generation that runs at high speed to sealing friction pair
Amount absorbs, and cooling and lubricating keeps end face liquid film not gasify, so as to extend sealing life.The sealing fluid of heat is carried along separation sleeve 14
With the gap between axle sleeve 4, then the conduction hole 38 by being distributed on pump efficiency ring right side, into security seal side, cooling is moistened
Sliding security seal end face, by pumping some water dumping grooves 36 on 31 outer wall of ring into the annular solution positioned at 1 inner wall of outer press cover
Groove 39, in the case where being coordinated by hydraulic barrier 40, the movement of baffle seal liquid circumferencial direction, so that the partial high pressure produced, makes close
Sealing liquid is sent to exterior hermetically sealed can by 13 hole of fluid hole on outer press cover 1, is further again introduced into inlet opening 11 after cooling, after
It is continuous to participate in circulation.
Preferably, the inner of internal gland 2 is equipped with mixing drum 47, holds medium in mixing drum 47, agitating shaft 3 stretches into mixing drum
In 47, paddle 48 is set in agitating shaft 3 and stretches on the part of mixing drum 47；The pressure limit of above-mentioned medium is 1-3.5bar.
Preferably, for the pressure that sealing fluid is formed in annular seal space 15 higher than the pressure in medium, pressure differential is about 1-
2.5kgf/cm2, pressure differential causes medium to permeate difficulty increase into annular seal space 15, to improve sealing effect.
Preferably, 24 material of L-shaped baffle ring is ptfe composite, and interior static ring material inlays high intensity for 304 stainless steels
Graphite, interior rotating ring 8 are carborundum, this two kinds of combinations of materials, then are equipped with Bidirectional balance sealed characteristic, its PV value allowable is quite excellent
It is good.26 material of outer stationary ring of security seal is common graphite, and outer rotating ring 30 is hard alloy, and impact resistance is good.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (10)
1. a kind of mechanically-sealing apparatus for high speed sand mill, including outer press cover（1）, internal gland（2）Stirred with for being set in
Mix axis（3）On axle sleeve（4）, the outer press cover（1）And internal gland（2）It is set in the axle sleeve（4）On, the outer press cover（1）
And internal gland（2）Between be connected by screw, it is characterised in that：The axle sleeve（4）Right end radially encloses and extends to form one
Bottom wall（5）, the bottom wall（5）Outer ring extends to form an annular wall to the left vertically（6）, the bottom wall（5）, annular wall（6）With
The axle sleeve（4）Outer wall between cavity be first annular groove（7）；
The first annular groove（7）Inside it is provided with interior rotating ring（8）, the interior rotating ring（8）With the axle sleeve（4）Between pass through positioning
Pin realizes circumferential anti-rotation, the interior rotating ring（8）Left end is provided with one and is fastened in the axle sleeve（4）On baffle ring（9）；
The internal gland（2）The second annular groove is provided with right side（10）, second annular groove（10）Inside it is arranged with interior quiet
Ring assemblies, the internal gland（2）Inlet opening is provided with outer wall（11）；
The interior static components right side and the interior rotating ring（8）Left side is bonded, to form primary seal；
The axle sleeve（4）With the outer press cover（1）Between gap in be provided with and be sheathed on the axle sleeve（4）On outer rotating ring group
Part；
The outer press cover（1）The 3rd annular groove is provided with the right side of inner ring（12）, the 3rd annular groove（12）Interior fixation
It is provided with outer stationary ring（26）Component, the outer press cover（1）Fluid hole is provided with outer wall（13）；
The outer moving ring assembly left side and the outer stationary ring（26）Component right side is bonded, to form security seal；
The internal gland（2）, outer press cover（1）With the axle sleeve（4）Between gap in be provided with a separation sleeve（14）；
The separation sleeve（14）It is clamped in the internal gland（2）And outer press cover（1）Between, to limit its axial displacement；
The separation sleeve（14）With the internal gland（2）Between pass through the positioning pin and realize circumferential anti-rotation；
The separation sleeve（14）With the internal gland（2）Between form an annular seal space（15）, the annular seal space（15）With it is described into
Fluid apertures（11）Connection, the annular seal space（15）With the internal gland（2）Internal flowing hole（16）Connection, is returned with forming liquid
Road.
2. mechanically-sealing apparatus according to claim 1, it is characterised in that：Second annular groove（10）With the axle sleeve
（4）It is parallel and with the axle sleeve（4）Adjacent side wall, its section form from right to left elevated first step portion successively（17）、
Second step portion（18）With the 3rd stage portion（19）.
3. mechanically-sealing apparatus according to claim 2, it is characterised in that：The interior static components include stationary seat
（20）, embedded ring（21）, the first spring（22）, the first O-ring seal（23）With L-shaped baffle ring（24）；
The stationary seat（20）It is sheathed on second annular groove（10）The side wall on, and the stationary seat（20）With it is described
The first step portion of side wall（17）, second step portion（18）, the 3rd stage portion（19）It is bonded successively, the stationary seat（20）With institute
State internal gland（2）Between fixed by screw, realize the stationary seat（20）With internal gland（2）Between circumferential anti-rotation；
The first step portion（17）With the second step portion（18）Between, with the axle sleeve（4）The vertical end face of axial line
On be provided with multiple the first spring eyes being uniformly distributed circumferentially, first spring（22）It is installed on first spring eye
It is interior, first spring（22）Left end is contradicted in the first spring eye bottom, first spring（22）Right end with it is described quiet
Ring seat（20）Fitting；
First O-ring seal（23）It is arranged at the stationary seat（20）With the second step portion（18）Between, described
One O-ring seal（23）Left end is provided with a packing ring（25）, the packing ring（25）Left end is contradicted in the second step portion（18）
With the 3rd stage portion（19）Between, with the axle sleeve（4）On the vertical end face of axial line；
The L-shaped baffle ring（24）It is arranged at the stationary seat（20）With the 3rd stage portion（19）Between；
The embedded ring（21）It is arranged at the stationary seat（20）Right end, and the embedded ring（21）Left side and outer wall are and institute
State stationary seat（20）Fitting, the embedded ring（21）Right side and the interior rotating ring（8）Left side is bonded.
4. mechanically-sealing apparatus according to claim 1, it is characterised in that：The outer stationary ring（26）Component includes outer stationary ring
（26）, second spring（27）, the second O-ring seal（28）And throw-out collar（29）；
The outer stationary ring（26）It is sheathed on the 3rd annular groove（12）It is interior, the outer stationary ring（26）With the outer press cover（1）It
Between fixed by screw, to realize the outer stationary ring（26）With the outer press cover（1）Between circumferential anti-rotation；
The outer stationary ring（26）Right side and the outer rotating ring（30）Component joint, the outer stationary ring（26）Left side is pushed away with described
Ring（29）Fitting；
3rd annular groove（12）Multiple axially disposed and circumferentially distributed second spring hole is inside provided with, it is described
Second spring（27）It is arranged in the second spring hole, the second spring（27）Right side and the throw-out collar（29）Left side
Fitting；
Second O-ring seal（28）It is arranged at the outer stationary ring（26）, throw-out collar（29）With the 3rd annular groove（12）Groove
Between wall.
5. mechanically-sealing apparatus according to claim 4, it is characterised in that：The outer rotating ring（30）Component includes outer rotating ring
（30）, pumping ring（31）, the 3rd O-ring seal（32）And baffle ring（33）；
The outer rotating ring（30）The axle sleeve is sheathed on pumping（4）On, the outer rotating ring（30）Left side outer ring with it is described outer
Stationary ring（26）Right side is bonded, the outer rotating ring（30）Right side and the pumping ring（31）Left side inner ring fitting；
The baffle ring（33）It is fastened in the axle sleeve（4）On, the baffle ring（33）Right side and the outer rotating ring（30）Left side
Inner ring is bonded；
The pumping ring（31）Right side is contradicted in the axle sleeve（4）In the stage portion of upper setting；
3rd O-ring seal（32）It is arranged at the outer rotating ring（30）With the axle sleeve（4）Between.
6. mechanically-sealing apparatus according to claim 5, it is characterised in that：The outer rotating ring（30）With the axle sleeve（4）
Between be provided with and multiple be uniformly distributed circumferentially the first steel ball（34）, the pumping ring（31）With the axle sleeve（4）Between set
There are multiple the second steel balls being uniformly distributed circumferentially（35）.
7. mechanically-sealing apparatus according to claim 5, it is characterised in that：The pumping ring（31）Outer wall left end is provided with
Multiple water dumping grooves axially extended（36）, the water dumping groove（36）It is uniformly distributed circumferentially；
The pumping ring（31）On outer wall, the water dumping groove（36）Right end is provided with throttling channel circumferentially（37）；
The pumping ring（31）On right side, circumferentially distributed there are multiple conduction holes（38）.
8. according to claim 1-7 any one of them mechanically-sealing apparatus, it is characterised in that：The outer press cover（1）On inner wall
It is provided with annular solution tank（39）；The annular solution tank（39）A hydraulic barrier is fixedly installed at interior, liquid outlet（40）.
9. mechanically-sealing apparatus according to claim 8, it is characterised in that：The outer press cover（1）With the axle sleeve（4）It
Between be fixedly installed connector（41）.
10. mechanically-sealing apparatus according to claim 9, it is characterised in that：The connector（41）Including setting vertically
The fixed part put（42）With the connecting rod being disposed radially（43）, the connecting rod（43）It is fixed on the fixed part（42）It is right
End；
The fixed part（42）Pass through screw and the internal gland（2）It is fixedly connected；
The connecting rod（43）Stretch into the annular wall（6）Annular groove is set on outer wall（50）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092460.7U CN207278884U (en) | 2017-08-29 | 2017-08-29 | A kind of mechanically-sealing apparatus for high speed sand mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092460.7U CN207278884U (en) | 2017-08-29 | 2017-08-29 | A kind of mechanically-sealing apparatus for high speed sand mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207278884U true CN207278884U (en) | 2018-04-27 |
Family
ID=61985034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721092460.7U Active CN207278884U (en) | 2017-08-29 | 2017-08-29 | A kind of mechanically-sealing apparatus for high speed sand mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207278884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161062A (en) * | 2020-09-27 | 2021-01-01 | 中国航发湖南动力机械研究所 | Combined sealing structure |
| CN113062983A (en) * | 2021-04-29 | 2021-07-02 | 四川大学 | Two-stage pressure reduction rotary dynamic sealing device |
-
2017
- 2017-08-29 CN CN201721092460.7U patent/CN207278884U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161062A (en) * | 2020-09-27 | 2021-01-01 | 中国航发湖南动力机械研究所 | Combined sealing structure |
| CN112161062B (en) * | 2020-09-27 | 2022-08-09 | 中国航发湖南动力机械研究所 | Combined sealing structure |
| CN113062983A (en) * | 2021-04-29 | 2021-07-02 | 四川大学 | Two-stage pressure reduction rotary dynamic sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107355542A (en) | A kind of mechanically-sealing apparatus for high speed sand mill | |
| CN207278884U (en) | A kind of mechanically-sealing apparatus for high speed sand mill | |
| CN106640740B (en) | The Double End fluid dynamic and static pressure mechanical seal of sodium-cooled fast reactor core main pump | |
| CN210343823U (en) | Combined non-contact double-end-face seal based on magnetic liquid seal and fluid dynamic pressure mechanical seal | |
| US4634297A (en) | Means for sealing of a bearing space formed in hydrostatic and aerostatic bearings adapted to receive a fluid | |
| CN208397308U (en) | A kind of high-speed dry operating mechanically-sealing apparatus | |
| CN101818736B (en) | Magnetic pump | |
| CN202867843U (en) | Mechanical sealing device with depthkeeping ratio step groove end face sealing ring | |
| CN207145617U (en) | A kind of double end-face mechanical sealing device for vertical grinding machine | |
| CN109382222B (en) | Adjusting method for improving liquid phase outlet pressure of disc separator | |
| CN105065675B (en) | Seal ring with streamline groove end face and mechanical seal device | |
| CN208204012U (en) | A kind of enhanced non-contact mechanical seal structure of liquid | |
| CN201357068Y (en) | Pressure-resistant corrosion-resistant mechanical seal for kettles | |
| CN210739384U (en) | Mechanical sealing device for reaction kettle tank | |
| CN111589390B (en) | Shaft seal device suitable for stirring shaft of ultrahigh pressure reaction kettle | |
| CN108167195A (en) | A kind of superelevation temperature molten salt shaft seal pump | |
| CN210739371U (en) | High-speed spiral sealing device | |
| CN212250476U (en) | Vertical back flush water pump for nuclear power | |
| CN209735419U (en) | stirring system | |
| CN208040934U (en) | A kind of associated sealing arrangement for bearings | |
| CN210265139U (en) | Small-pile main pump | |
| CN208874395U (en) | Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove | |
| CN208203585U (en) | High-temperature resistant pump and its cooling structure | |
| CN206636776U (en) | A kind of rotor pump packing structure and there is its impeller pump | |
| CN216950873U (en) | Reactor coolant pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |