CN207145620U - One kind is used for stirred tank bottom underpass type sealing device - Google Patents
One kind is used for stirred tank bottom underpass type sealing device Download PDFInfo
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- CN207145620U CN207145620U CN201721091832.4U CN201721091832U CN207145620U CN 207145620 U CN207145620 U CN 207145620U CN 201721091832 U CN201721091832 U CN 201721091832U CN 207145620 U CN207145620 U CN 207145620U
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Abstract
It the utility model is related to one kind and be used for stirred tank bottom underpass type sealing device, including the axle sleeve being sheathed on agitating shaft and the shell body being sheathed on axle sleeve, axle sleeve include Upper shaft sleeve and Lower shaft sleeve, Lower shaft sleeve top is sheathed on Lower shaft sleeve bottom；Shell body includes upper labyrinth ring, lower labyrinth ring, end cap, adpting flange and sealing flange and being sheathed on axle sleeve successively, is mutually inserted between upper labyrinth ring and lower labyrinth ring, to form labyrinth seal structure；An annular connecting portion is provided with the middle part of adpting flange inwall, multiple packing rings are provided between annular connecting portion inwall and Upper shaft sleeve；Lower shaft sleeve top is provided with rotating ring, and sealing flange inwall is provided with a stationary ring, and stationary ring top surface is bonded with rotating ring bottom surface, forms three seal cavities between said modules and axle sleeve respectively；Mechanically-sealing apparatus of the present utility model, it can stop that particulate matter enters in annular seal space, strengthen sealing effectiveness, increase the service life.
Description
Technical field
The utility model belongs to technical field of mechanical, and in particular to one kind is used for stirred tank bottom underpass type sealing dress
Put.
Background technology
Stirred tank reactor（Lower common name stirred tank）It is widely used in oil, chemical fibre, papermaking, emulsification, metallurgy, new energy etc.
The mix of industry or reaction, the heterogeneous reaction process such as single liquid phase course of reaction and the solid, gas-liquid-solid of liquid liquid, gas-liquid, liquid is realized, i.e.,
Realize the mixture function of the heating of technological requirement, evaporation, cooling and low high speed.Agitator includes transmission device, agitating shaft（Containing axle
Envelope）, impeller（Agitating paddle）；Kettle includes cylinder, chuck and internals, coil pipe, guide shell etc..The stirred tank industrially applied has into
Hundred thousands of kinds, if mainly having horizontal and vertical equipment by its driving and layout pattern, vertical relatively common, wherein drive device cloth
Be placed in top is referred to as underpass type structure for overhead plug in construction, drive arrangement in bottom.Overhead type structure at present
More popularize, its is simple in construction, and because installing material additional, canful, its sealing are not assemblied in top-drive device with lower axle and seal cavity
Between, because of the general not contacting material of mechanical seal, seal operation condition is more good, and mechanical seal failure is few.
Develop with the maximization of mixing plant, overhead plug in construction is just difficult to meet production requirement, vertical underpass type
Stirred tank（Also known as end stretch stirred tank）Also gradually it is applied.Compared with upper plug-in type agitator, its advantage：Meet same work
It is smaller with respect to the diameter of axle, rotating speed is high, labor and material saving manufacturing cost is low, efficiency high, power without hydraulic barrier in kettle during skill requirement
Device is fixed on foundation, solid and reliable；Upper cover is easy to the mounting arrangements of process pipeline without transmission and sealing device；
Overall production efficiency is high, and product is stable.
But there is also some problems, when medium is solid-liquid two-phase and larger concentration of solid particles, machine for this kind of stirred tank
Tool sealing is easily illegally occupied or is adhered on seal directly facing solid particle, impurity, sealing ring is blocked clamping stagnation, spring-compensating
Power loses bullet, and seal face is broken into impurity scuffing, seals easily failure.Partial corrosion medium also proposes very high to seal
Corrosion-resistant requirement.Mechanical seal applying working condition is complex, and service life is short.
Utility model content
In order to solve the easy plug for seal circle of medium for having to solid particle in the prior art, and scratch sealed end
Face, makes seal failure, the short technical problem of service life, and the utility model provides following technical scheme：
One kind is used for stirred tank bottom underpass type sealing device, including the axle sleeve being sheathed on agitating shaft and described in being sheathed on
Shell body on axle sleeve, the axle sleeve include Upper shaft sleeve and Lower shaft sleeve, and the Lower shaft sleeve top is sheathed on the Lower shaft sleeve bottom
On；
The shell body includes upper labyrinth ring, lower labyrinth ring, end cap, adpting flange and sealing flange, the upper labyrinth ring
The Upper shaft sleeve top is sheathed on, and is positioned by screw, phase interfix between the upper labyrinth ring bottom surface and lower labyrinth top surface of ring
Connect, to form labyrinth seal structure；
An annular connecting portion, the annular connecting portion top surface and the lower labyrinth are provided with the middle part of the adpting flange inwall
Ring bottom surface is bonded and is fixedly connected, and the annular connecting portion bottom surface is bonded and is fixedly connected with the end cap top surface, the ring
Multiple packing rings are provided between shape connecting portion inwall and the Upper shaft sleeve；
The sealing flange top surface is bonded and is fixedly connected with the adpting flange bottom surface；
The Lower shaft sleeve top is provided with an annular groove that Open Side Down, and rotating ring is provided with the annular groove, described close
Envelope flange inner wall is provided with a stationary ring, and the stationary ring top surface is bonded with the rotating ring bottom surface, the stationary ring bottom surface and the sealing
The step top surface fitting set on flange inner wall；
First annular seal space body is formed between the upper labyrinth ring, lower labyrinth ring, packing ring and Upper shaft sleeve；
The second annular seal space is formed between the adpting flange, sealing flange, Upper shaft sleeve, Lower shaft sleeve, end cap and packing ring
Body；
The 3rd seal cavity is formed between the rotating ring, stationary ring, sealing flange and Lower shaft sleeve；
The adpting flange top and the lower labyrinth ring outer wall joint place are provided with blowdown entrance and waste, described
Blowdown entrance and waste connect with the first annular seal space body；
The adpting flange bottom, which is provided with, rinses entrance and flushing outlet, the flushing entrance and flushing outlet with it is described
Second seal cavity connects；
The cold liquid entrance of the back of the body and back of the body cold liquid outlet, the cold liquid entrance of the back of the body and back of the body cold liquid outlet are provided with the sealing flange
Connected with the 3rd seal cavity.
As further explanation of the present utility model, a plurality of equally distributed spiral is provided with the upper labyrinth ring outer wall
Groove, a sealing gasket is provided between the lower labyrinth ring bottom surface and the annular connecting portion top surface.
As further explanation of the present utility model, a barrier ring is provided between adjacent two packing rings,
The part contacted on the Upper shaft sleeve outer wall with the packing ring is provided with chromium oxide ceramics layer.
As further explanation of the present utility model, it is provided between the annular groove inwall of the rotating ring and the Lower shaft sleeve
Multiple axially disposed alignment pins, the alignment pin are uniformly distributed circumferentially, to realize between the rotating ring and Lower shaft sleeve
Circumferential anti-rotation；
The first O-ring seal is provided between the rotating ring and the annular groove inwall of the Lower shaft sleeve；
The baffle ring being fastened on the Lower shaft sleeve is provided with below the rotating ring, with the circumferentially displaced of the fixation rotating ring.
As further explanation of the present utility model, set on the step top surface that is set on the sealing flange inwall
There are multiple circumferentially distributed spring eyes, spring is provided with the spring eye, the spring top is contradicted at the stationary ring bottom
On face.
As further explanation of the present utility model, L is provided between the stationary ring outer wall and the sealing flange inwall
Type back-up ring and the second O-ring seal, second O-ring seal be arranged at below the L-type back-up ring and with the L-type back-up ring
Bottom surface contacts.
As further explanation of the present utility model, it is provided between the sealing flange lower inner wall and Lower shaft sleeve outer wall
One oil sealing.
As further explanation of the present utility model, the Lower shaft sleeve bottom is axially disposed open slot, the opening
Groove is provided with a plurality of, and the open slot is uniformly distributed circumferentially.
As further explanation of the present utility model, the Lower shaft sleeve bottom is arranged with wedging ring in a hoop and one,
The hoop outer wall and the interior wedging ring inwall are to be provided with a fracture, the hoop on the conical surface and the interior wedging ring
Tight ring set is located on the interior wedging ring and by screw lock, the Lower shaft sleeve and agitating shaft is locked to realize.
One is provided with as further explanation of the present utility model, below the sealing flange to be fastened on the Lower shaft sleeve
Limiting plate, the limiting plate is fixedly connected with the sealing flange.
Compared with prior art, what the utility model obtained has the beneficial effect that：
1st, restriction effect is formed by first of labyrinth component, prevents a large amount of materials from pouring in first annular seal space body；Its screw thread
Pump forms material reversing pump and send effect, can pump up away the material that invade labyrinth, reaches and reduces material into first
The purpose of seal cavity, also just improve the condition of work of mechanical seal.First annular seal space body is provided with blowdown inlet and outlet, when few
When the material of amount particle containing high concentrated, solid enters first annular seal space body by labyrinth component, blowdown import introduces aqueous rinsing liquid
（Such as water or other liquid compatible with material）, flushing liquor pressure is higher than 1 ~ 2bar of material pressure, and a part of flushing liquor confuses thing
Material is discharged into precipitation together with the material of invasion along labyrinth to the conveying of stirring bottoms material side, another part by waste
Pond separates, and the flushing liquor after separation can be with recycling；The packing ring inner diameter edge of filler assembly has with anti-wear sleeve external diameter
Interference fit forms sealing, for stopping granule materials invasion primary seal side again, effectively increases the service life.
2nd, main sealing assembly and filler assembly, adpting flange, sealing flange etc. form the second seal cavity, main sealing assembly
Designed for outer-flowing type, i.e. medium in the second seal cavity will not be to sealing dynamic and static ring internal side diameter leakage, and adpting flange bottom is set
Be equipped with and sealflush import, outlet communicates with the second seal cavity, clean flushing water is introduced into the second seal cavity, to sealing
End face is rinsed cooling, moreover it is possible to washes away the solid particle taken away and omitted by filler assembly.Flushing water pressure is higher than first
Seal cavity pressure about 1~2bar, to isolate the second seal cavity and first annular seal space body, improve sealing effectiveness.
3rd, oil sealing is assigned in sealing flange bottom endoporus, and its internal diameter contacts with axle sleeve, and the 3rd sealing is formed with main sealing assembly
Cavity, connected with carrying on the back cold liquid import and export, carry on the back cold liquid and sealing ring is cooled down into the 3rd seal cavity, be seal face liquid
Film is stable, good sealing effect.Material pollutes environment when sealing catastrophic failure prevented also from upper level simultaneously.
The utility model is described in further details below with reference to drawings and Examples.
Brief description of the drawings
Fig. 1 is the sectional view of sealing device.
Fig. 2 is labyrinth ring and the partial sectional view of lower labyrinth ring grafting on sealing device.
Fig. 3 is the upper labyrinth ring stereogram of sealing device.
Fig. 4 is the L-type back-up ring sectional view of sealing device.
Fig. 5 is sealing device hoop stereogram.
Fig. 6 is wedging ring stereogram in sealing device.
Fig. 7 is sealing device Lower shaft sleeve stereogram.
In figure：1st, agitating shaft；2nd, Upper shaft sleeve；3rd, Lower shaft sleeve；4th, upper labyrinth ring；5th, lower labyrinth ring；6th, end cap；7th, connection method
It is blue；8th, sealing flange；9th, annular connecting portion；10th, packing ring；11st, rotating ring；12nd, stationary ring；13rd, first annular seal space body；14th, second
Seal cavity；15th, the 3rd seal cavity；16th, blowdown entrance；17th, waste；18th, entrance is rinsed；19th, flushing outlet；20、
Carry on the back cold liquid entrance；21st, cold liquid outlet is carried on the back；22nd, helicla flute；23rd, sealing gasket；24th, barrier ring；25th, chromium oxide ceramics layer；26th, it is fixed
Position pin；27th, the first O-ring seal；28th, baffle ring；29th, spring；30th, L-type back-up ring；31st, the second O-ring seal；32nd, limiting plate；
33rd, hoop；34th, interior wedging ring；35th, oil sealing；36th, the 3rd O-ring seal；37th, the 4th O-ring seal；38th, the 5th is O-shaped close
Seal；39th, agitator；40th, bulge loop；41st, ring groove；42nd, open slot；43rd, fracture；44th, annular groove.
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 accompanying drawing
And embodiment describes in detail as follows to specific embodiment of the present utility model, architectural feature and its effect.
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 describing 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 be mechanical connection or electrical connection；Can be joined directly together, can also be in
Between medium be indirectly connected, can be the connection of two element internals.For the ordinary skill in the art, can pass through
Concrete condition understands concrete meaning of the above-mentioned term in the invention.
As shown in figure 1, a kind of be used for stirred tank bottom underpass type sealing device, including the axle sleeve being sheathed on agitating shaft 1
With the shell body being sheathed on axle sleeve, axle sleeve includes Upper shaft sleeve 2 and Lower shaft sleeve 3, and the top of Lower shaft sleeve 3 is sheathed on the bottom of Lower shaft sleeve 3
On；Shell body includes upper labyrinth ring 4, lower labyrinth ring 5, end cap 6, adpting flange 7 and sealing flange 8, and upper labyrinth ring 4 is sheathed on
The top of axle sleeve 2, positioned by screw and rotary driving force is provided, phase interfix between the upper bottom surface of labyrinth ring 4 and the lower top surface of labyrinth ring 5
Connect, to form labyrinth seal structure.
An annular connecting portion 9 is provided with the middle part of the inwall of adpting flange 7, the annular top surface of connecting portion 9 pastes with the lower bottom surface of labyrinth ring 5
Close and be fixedly connected by multiple axially disposed screws, set between the lower bottom surface of labyrinth ring 5 and the top surface of annular connecting portion 9
There are a sealing gasket 23, above-mentioned composition labyrinth component；The annular bottom surface of connecting portion 9 be bonded with the top surface of end cap 6 and by it is multiple vertically
The screw of setting is fixedly connected, and is provided with multiple packing rings 10 between the annular inwall of connecting portion 9 and Upper shaft sleeve 2, above-mentioned composition is filled out
Expect component；The top surface of sealing flange 8 is bonded with the bottom surface of adpting flange 7 and is fixedly connected by screw.
The top of Lower shaft sleeve 3 is provided with an annular groove 44 that Open Side Down, and rotating ring 11, sealing flange are provided with annular groove 44
8 inwalls are provided with a stationary ring 12, and the top surface of stationary ring 12 is bonded with the bottom surface of rotating ring 11, seal on flange inner wall on the step top surface set and set
Multiple circumferentially distributed holes of spring 29 are equipped with, spring 29 is provided with the hole of spring 29, the top of spring 29 is contradicted at the bottom of stationary ring 12
On face, elastic force is provided for stationary ring 12, forms main sealing assembly.
First annular seal space body 13 is formed between upper labyrinth ring 4, lower labyrinth ring 5, packing ring 10 and Upper shaft sleeve 2；Adpting flange
7th, the second seal cavity 14 is formed between sealing flange 8, Upper shaft sleeve 2, Lower shaft sleeve 3, end cap 6 and packing ring 10；It is rotating ring 11, quiet
The 3rd seal cavity 15 is formed between ring 12, sealing flange 8 and Lower shaft sleeve 3；
The top of adpting flange 7 and the outer wall joint place of lower labyrinth ring 5 are provided with blowdown entrance 16 and waste 17, and blowdown enters
Mouth 16 and waste 17 connect with first annular seal space body 13；The bottom of adpting flange 7, which is provided with, rinses entrance 18 and flushing outlet
19, rinse entrance 18 and flushing outlet 19 connects with the second seal cavity 14；The cold He of liquid entrance 20 of the back of the body is provided with sealing flange 8
Cold liquid outlet 21 is carried on the back, cold liquid entrance 20 is carried on the back and back of the body cold liquid outlet 21 connects with the 3rd seal cavity 15.
In the present embodiment, the upper lower surface of labyrinth ring 4 and the lower upper surface of labyrinth ring 5 are provided with three bulge loops 40, so as to
Two ring grooves 41 are respectively formed, upper labyrinth ring 4 and lower labyrinth ring 5 are mutually inserted by the bulge loop 40 and ring groove 41, and
And mutually gap coordinates each other between bulge loop 40 and ring groove 41, its radial clearance is not more than 0.5mm, as shown in Fig. 2 working as upper fan
When palace ring 4 rotates at a high speed, the bulge loop 40 of the bulge loop 40 of upper labyrinth ring 4 and lower labyrinth ring 5 forms restriction effect, prevents a large amount of materials
Pour in first annular seal space body 13.
Preferably, it is provided with a plurality of equally distributed helicla flute on the above-mentioned outermost one of the upper labyrinth ring 4 circle outer wall of bulge loop 40
22, as shown in figure 3, and the outermost top of bulge loop 40 of lower labyrinth ring 5 and the outermost top flat of bulge loop 40 of upper labyrinth ring 4
Together, when the rotation direction of agitating shaft 1 is clockwise, helicla flute 22 is dextrorotation, and when upper labyrinth ring 4 rotates at a high speed, helicla flute 22 is with
Labyrinth ring 5 cooperatively forms reversely pumping effect, also known as helical pump, can pump up away the material for invading labyrinth,
It can reach and reduce the purpose that material enters in first annular seal space body 13, labyrinth refers to herein, upper labyrinth ring 4 and the lower phase of labyrinth ring 5
After mutual grafting, radial clearance therebetween.
Preferably, be provided with a barrier ring 2824 between two adjacent packing rings 10, on the outer wall of Upper shaft sleeve 2 with filler
The part that ring 10 contacts is provided with chromium oxide ceramics layer 25, and the packing ring 10 forms first annular seal space body with above-mentioned labyrinth component
13, above-mentioned labyrinth component is used to stop that reactor bottom solution and granule materials enter in first annular seal space body 13, above-mentioned filler group
Part is used to stop granule materials invasion main sealing assembly side again；Upper shaft sleeve 2 and Lower shaft sleeve 3 assemble for split, pass through screw
Positioning, Upper shaft sleeve 2 and packing ring 10 are consumable accessory, can be changed after excessive wear with single-piece, maintenance cost is low.
Preferably, first annular seal space body 13 is provided with blowdown import and waste 17, when containing high concentrated, solid on a small quantity
When the material of grain enters first annular seal space body 13 by labyrinth component, blowdown import introduces aqueous rinsing liquid（As water or other with
The compatible liquid of material）, flushing liquor pressure is higher than 1 ~ 2bar of material pressure, and a part of flushing liquor confuses material along labyrinth to stirring
Bottom material side conveying is mixed, another part is discharged into sedimentation basin by waste 17 together with the material of invasion and separated, separation
Flushing liquor afterwards can be with recycling, and during which the helical pump of labyrinth component also contributes to discharge material.
Preferably, multiple axially disposed alignment pins are provided between rotating ring 11 and the inwall of annular groove 44 of Lower shaft sleeve 3
26, alignment pin 26 is uniformly distributed circumferentially, to realize the circumferential anti-rotation between rotating ring 11 and Lower shaft sleeve 3；Rotating ring 11 and Lower shaft sleeve 3
The inwall of annular groove 44 between be provided with the first O-ring seal 27；The lower section of rotating ring 11 is provided with the baffle ring being fastened on Lower shaft sleeve 3
28, to fix the circumferentially displaced of rotating ring 11.
Preferably, the O-ring seal 31 of L-type back-up ring 30 and second is provided between the outer wall of stationary ring 12 and the inwall of sealing flange 8,
Second O-ring seal 31 is arranged at the lower section of L-type back-up ring 30 and contacted with the bottom surface of L-type back-up ring 30.The above-mentioned inwall of L-type back-up ring 30 with
The outer wall of stationary ring 12 is interference fit, and with sealing flange 8 compared with loose fit, the L-type back-up ring 30 is used to prevent the outer wall of L-type back-up ring 30
Granule foreign blocks the second O-ring seal 31, keeps the floatability of stationary ring 12, includes axially floating and radial floating, one side
Ensure the elastic force nose balance of spring 29, another aspect seal face followability is good, so as to improve sealing effectiveness.
Above-mentioned L-type back-up ring 30 is as shown in figure 4, its upper end straight section is provided with an inclined flange, the angled end-face folder of the flange
Angle a1, scope are 40-50 degree, straight section the axial length b1, scope 0.3-0.8mm, radial direction h1, scope 0.4- of flange inner diameter
0.8mm, internal diameter straight section have an inclination angle a2, and scope is 12-20 degree, also there is always that segment length is also b2 in the lower end of L-type back-up ring 30, model
Enclose for 0.5-0.7mm, straight section top Ye Youyi inclination angles a2, intersect with inclination angle a2 above.In the pressure of the second seal cavity 14 and
Under the effect of second O-ring seal 31, two inclination angle a1, a2 change, and cause the cutting edge of L-type back-up ring 30 tighter and the outer wall of stationary ring 12
It is bonded but the floatability of stationary ring 12 is influenceed less, but the downside of fine particle invasion L-type back-up ring 30 can be prevented.
Preferably, an oil sealing 35 is provided between the lower inner wall of sealing flange 8 and the outer wall of Lower shaft sleeve 3, the oil sealing 35 and master
Seal assembly is collectively forming the 3rd seal cavity 15, makes the sealing effectiveness of the 3rd seal cavity 15 more preferable, and the oil sealing 35 selects excellent country
Standard component, standard No. GB13871, also known as interior bag skeleton lip envelope.
The bottom of adpting flange 7, which is provided with, sealflushes import and flushing outlet 19, and it is close that clean flushing water is introduced into second
Cavity 14 is sealed, cooling is rinsed to seal face, moreover it is possible to wash away the solid particle taken away and omitted by filler assembly.Rinse
Water pressure is higher than the pressure about 1~2bar of first annular seal space body 13, to isolate the second seal cavity 14 and first annular seal space body 13,
Improve sealing effectiveness.
It is also equipped with carrying on the back cold liquid inlet on sealing flange 8 and carries on the back cold liquid outlet 21, it is right into the 3rd seal cavity 15 carries on the back cold liquid
Sealing ring is cooled down, and makes seal face liquid film stable, good sealing effect.Thing when simultaneously prevented also from sealing catastrophic failure at different levels
Material pollution environment.
Preferably, the bottom of Lower shaft sleeve 3 is axially disposed open slot 42, and open slot 42 is provided with a plurality of and circumferentially equal
Even distribution, as shown in fig. 7, the bottom of Lower shaft sleeve 3 is arranged with wedging ring 34 in a hoop 33 and one, as shown in Figure 5, Figure 6, banding
The outer wall of ring 33 is the conical surface, and the interior inwall of wedging ring 34, to cooperation, is locked with the outer wall of hoop 33 by some circumferentially distributed screws
Tightly, Lower shaft sleeve 3 and agitating shaft 1 are locked to realize；The inwall of hoop 33 is a conical surface, 8~12 degree of axial angle, interior wedging ring 34
Also it is a conical surface with the mating surface of hoop 33, angle is identical, while interior wedging ring 34 is provided with an axial fracture 43, interior wedging ring
34 are set in the outer wall bottom of Lower shaft sleeve 3, and the bottom of Lower shaft sleeve 3 is machined with above-mentioned open slot 42, the open slot 42 at least two, when
When bolt is locked, hoop 33 is furthered with interior wedging ring 34, and the conical surface is relative to be slided, and interior wedging ring 34 just has because there is fracture 43
The trend that internal diameter diminishes, while also because Lower shaft sleeve 3 also is provided with open slot 42, its internal diameter just holds agitating shaft 1 tightly, is filled for a whole set of sealing
Offer rotary driving force is provided.
Preferably, the lower section of sealing flange 8 is provided with a limiting plate 32 being fastened on Lower shaft sleeve 3, limiting plate 32 and sealing
Flange 8 is fixedly connected.Limiting plate 32 is fixedly connected by screw with sealing flange 8, and the whole series sealing is assembled into cartridge seal,
It is easy to be connected with equipment, it is easy to assembly without adjusting the decrement of spring 29 again.
Preferably, the 3rd O-ring seal is provided with the present embodiment between Upper shaft sleeve 2 and Lower shaft sleeve 3 and agitating shaft 1
36, the 4th O-ring seal 37 is provided between the end face that adpting flange 7 and sealing flange 8 contact with each other, and adpting flange 7 is with stirring
Mix and be provided with the 5th O-ring seal 38 between the end face of the contact of bucket 39, and pass through screw between adpting flange 7 and agitator 39
It is fixedly connected, by the effect of above-mentioned multiple sealing rings, makes the mechanically-sealing apparatus integral sealing effect more preferable.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
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. one kind is used for stirred tank bottom underpass type sealing device, including is sheathed on agitating shaft（1）On axle sleeve and be sheathed on institute
State the shell body on axle sleeve, it is characterised in that：The axle sleeve includes Upper shaft sleeve（2）And Lower shaft sleeve（3）, the Lower shaft sleeve（3）Top
End is sheathed on the Lower shaft sleeve（3）On bottom；
The shell body includes upper labyrinth ring（4）, lower labyrinth ring（5）, end cap（6）, adpting flange（7）And sealing flange（8）, institute
State labyrinth ring（4）It is sheathed on the Upper shaft sleeve（2）Top, and positioned by screw, the upper labyrinth ring（4）Bottom surface and lower fan
Gong Huan（5）It is mutually inserted between top surface, to form labyrinth seal structure；
The adpting flange（7）An annular connecting portion is provided with the middle part of inwall（9）, the annular connecting portion（9）Top surface with it is described
Lower labyrinth ring（5）Bottom surface is bonded and is fixedly connected, the annular connecting portion（9）Bottom surface and the end cap（6）Top surface be bonded and
It is fixedly connected, the annular connecting portion（9）Inwall and the Upper shaft sleeve（2）Between be provided with multiple packing rings（10）；
The sealing flange（8）Top surface and the adpting flange（7）Bottom surface is bonded and is fixedly connected；
The Lower shaft sleeve（3）Top is provided with an annular groove that Open Side Down（44）, the annular groove（44）Inside it is provided with rotating ring
（11）, the sealing flange（8）Inwall is provided with a stationary ring（12）, the stationary ring（12）Top surface and the rotating ring（11）Paste bottom surface
Close, the stationary ring（12）Bottom surface and the sealing flange（8）The step top surface fitting set on inwall；
The upper labyrinth ring（4）, lower labyrinth ring（5）, packing ring（10）And Upper shaft sleeve（2）Between formed first annular seal space body
（13）；
The adpting flange（7）, sealing flange（8）, Upper shaft sleeve（2）, Lower shaft sleeve（3）, end cap（6）And packing ring（10）Between
Form the second seal cavity（14）；
The rotating ring（11）, stationary ring（12）, sealing flange（8）And Lower shaft sleeve（3）Between formed the 3rd seal cavity（15）；
The adpting flange（7）Top and the lower labyrinth ring（5）Outer wall joint place is provided with blowdown entrance（16）Go out with blowdown
Mouthful（17）, the blowdown entrance（16）And waste（17）With the first annular seal space body（13）Connection；
The adpting flange（7）Bottom is provided with flushing entrance（18）And flushing outlet（19）, the flushing entrance（18）And punching
Wash out mouth（19）With second seal cavity（14）Connection；
The sealing flange（8）On be provided with the cold liquid entrance of the back of the body（20）With back of the body cold liquid outlet（21）, the cold liquid entrance of the back of the body（20）
With back of the body cold liquid outlet（21）With the 3rd seal cavity（15）Connection.
2. sealing device according to claim 1, it is characterised in that：The upper labyrinth ring（4）It is provided with outer wall a plurality of
Equally distributed helicla flute（22）, the lower labyrinth ring（5）Bottom surface and the annular connecting portion（9）It is close that one is provided between top surface
Packing（23）.
3. sealing device according to claim 1, it is characterised in that：Two adjacent packing rings（10）Between be all provided with
It is equipped with a barrier ring（24）, the Upper shaft sleeve（2）On outer wall with the packing ring（10）The part of contact is provided with chromium oxide pottery
Enamel coating（25）.
4. sealing device according to claim 1, it is characterised in that：The rotating ring（11）With the Lower shaft sleeve（3）Ring
Shape groove（44）Multiple axially disposed alignment pins are provided between inwall（26）, the alignment pin（26）Circumferentially uniformly divide
Cloth, to realize the rotating ring（11）With Lower shaft sleeve（3）Between circumferential anti-rotation；
The rotating ring（11）With the Lower shaft sleeve（3）Annular groove（44）The first O-ring seal is provided between inwall（27）；
The rotating ring（11）Lower section, which is provided with, is fastened in the Lower shaft sleeve（3）On baffle ring（28）, with the fixation rotating ring（11）
It is circumferentially displaced.
5. sealing device according to claim 1, it is characterised in that：The sealing flange（8）What is set on inwall is described
Multiple circumferentially distributed springs are provided with step top surface（29）Hole, the spring（29）Spring is provided with hole（29）, institute
State spring（29）Top is contradicted in the stationary ring（12）On bottom surface.
6. sealing device according to claim 5, it is characterised in that：The stationary ring（12）Outer wall and the sealing flange
（8）L-type back-up ring is provided between inwall（30）With the second O-ring seal（31）, second O-ring seal（31）It is arranged at institute
State L-type back-up ring（30）Lower section and with the L-type back-up ring（30）Bottom surface contacts.
7. sealing device according to claim 6, it is characterised in that：The sealing flange（8）Lower inner wall and Lower shaft sleeve
（3）An oil sealing is provided between outer wall（35）.
8. according to the sealing device described in claim any one of 1-7, it is characterised in that：The Lower shaft sleeve（3）Bottom is vertically
It is provided with open slot（42）, the open slot（42）It is provided with a plurality of, the open slot（42）It is uniformly distributed circumferentially.
9. sealing device according to claim 8, it is characterised in that：The Lower shaft sleeve（3）Bottom is arranged with a hoop
（33）With one in wedging ring（34）, the hoop（33）Outer wall and the interior wedging ring（34）Inwall is the conical surface and described
Interior wedging ring（34）On be provided with a fracture（43）, the hoop（33）It is set in the interior wedging ring（34）Above and lead to
Screw lock is crossed, the Lower shaft sleeve is locked to realize（3）And agitating shaft（1）.
10. sealing device according to claim 9, it is characterised in that：The sealing flange（8）Lower section is provided with a cutting ferrule
In the Lower shaft sleeve（3）On limiting plate（32）, the limiting plate（32）With the sealing flange（8）It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091832.4U CN207145620U (en) | 2017-08-29 | 2017-08-29 | One kind is used for stirred tank bottom underpass type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091832.4U CN207145620U (en) | 2017-08-29 | 2017-08-29 | One kind is used for stirred tank bottom underpass type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207145620U true CN207145620U (en) | 2018-03-27 |
Family
ID=61670585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091832.4U Active CN207145620U (en) | 2017-08-29 | 2017-08-29 | One kind is used for stirred tank bottom underpass type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207145620U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145603A (en) * | 2019-05-21 | 2019-08-20 | 宁波领智机械科技有限公司 | Pulverizer shaft sealer |
| CN112303243A (en) * | 2020-07-31 | 2021-02-02 | 李金伟 | Sealing element with good sealing effect and application thereof |
| CN114251460A (en) * | 2021-12-30 | 2022-03-29 | 湖南省农友机械集团有限公司 | Cutter shaft sealing structure |
| CN116726751A (en) * | 2023-06-15 | 2023-09-12 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
-
2017
- 2017-08-29 CN CN201721091832.4U patent/CN207145620U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145603A (en) * | 2019-05-21 | 2019-08-20 | 宁波领智机械科技有限公司 | Pulverizer shaft sealer |
| CN110145603B (en) * | 2019-05-21 | 2024-03-08 | 宁波领智机械科技有限公司 | Shaft sealing device of pulverizer |
| CN112303243A (en) * | 2020-07-31 | 2021-02-02 | 李金伟 | Sealing element with good sealing effect and application thereof |
| CN114251460A (en) * | 2021-12-30 | 2022-03-29 | 湖南省农友机械集团有限公司 | Cutter shaft sealing structure |
| CN116726751A (en) * | 2023-06-15 | 2023-09-12 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
| CN116726751B (en) * | 2023-06-15 | 2024-04-09 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
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