CN110131416A - A kind of mechanical seal pretightning force on-line control mechanism - Google Patents
A kind of mechanical seal pretightning force on-line control mechanism Download PDFInfo
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- CN110131416A CN110131416A CN201910302680.5A CN201910302680A CN110131416A CN 110131416 A CN110131416 A CN 110131416A CN 201910302680 A CN201910302680 A CN 201910302680A CN 110131416 A CN110131416 A CN 110131416A
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- spiral micrometer
- micrometer head
- pretightning force
- compression
- line control
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- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 230000006835 compression Effects 0.000 claims abstract description 48
- 238000007906 compression Methods 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 230000003068 static effect Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000036316 preload Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3492—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member with monitoring or measuring means associated with the seal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The present invention proposes a kind of mechanical seal pretightning force on-line control mechanism, belongs to pump shaft end field of sealing technology.It include: spiral micrometer head, stop screw, spiral micrometer head end cap, supporing shell, compression sensor, three foot throw-out collars, stationary ring installation set；The supporing shell, three foot throw-out collars, test cavity shell and transmission shaft are coaxial；3 spiral micrometer heads are installed with 120 degree of intervals on the circumferential surface of supporing shell；Two stop screws are symmetrically installed on the circumferential surface of supporing shell；The end of spiral micrometer head is equipped with spiral micrometer head end cap；Three foot throw-out collars are compression sensor base；Static components are mounted on test cavity shell by stationary ring installation set, and are fitted closely with moving ring assembly.The present invention is realized the online adjustable of mechanical seal pretightning force, is played an important role to mechanical sealing performance and life search by simple regulating mechanism.Compared to other regulative modes, of the invention is simple and reliable for structure, does not need external power device.
Description
Technical field
The invention belongs to pump shaft end field of sealing technology, and in particular to a kind of mechanical seal pretightning force on-line control mechanism.
Background technique
Hydrodynamic lubrication mechanical seal is widely used in all kinds of hydraulic systems.Mechanical seal mainly includes moving ring assembly and quiet
Ring assemblies, moving ring assembly is mounted in shaft and keeps opposing stationary with shaft, and static components are mounted on shell.Due to needing
Pretightning force to be provided by elastic elements such as spring or bellowss and compensates axial abrasion loss, rotating ring and stationary ring are limited by sealing ring
Determine radial displacement.According to the difference of compensating form, mechanical seal is divided into rotating ring compensation again and stationary ring compensates two kinds of forms.Two kinds of shapes
Formula relies on pretightning force and guarantees that stationary ring and rotating ring fit closely, and shaft moves simultaneously with rotating ring, in end clearance under stable state
It is middle to form certain thickness liquid film, under the premise of ensuring that sealing performance meets index request, while reducing dynamic and static interannular
Friction torque slows down rate of depreciation, realizes high-performance and the long-life of sealing structure.And determine that the important parameter of sealing performance is
Thickness of liquid film.Usually at 0.5~1 μm, the pretightning force of thickness and seal face, turns temperature by thickness of liquid film h in seal face
Speed, medium etc. are closely related.When h is smaller, seal face lubrication state is poor, and dynamic and static ring rate of depreciation is big, can shorten machinery
The service life of sealing, and h is excessive, can bring biggish leakage rate.Therefore it is necessary to ensure that h in reasonable range, guarantees close
The service life that prolonged mechanical seals while sealing property.In practical applications, medium, environment temperature and revolving speed are all by operating condition
It determines, and dynamic and static ring material be once it is determined that can not just change, therefore, adjusting the size of pretightning force, to become research oil film thick
The main means of degree.
Adjusting for pretightning force, generally use change adjusting washer quantity method change amount of spring compression, it is this from
Line method determines unified decrement by comparing experimental result commonly used in Design Stage, is not suitable for mechanical seal
Further investigation.For on-line control method, the Chinese patent application of Publication No. CN104179975A is in public affairs on July 22nd, 2014
A kind of controllable type mechanical seal based on change closing force has been opened, the adjusting of closing force has been realized in this application using electromagnetic force, needs
Accurately control electromagnetic force；The Chinese patent application of Publication No. CN104896104A discloses one on May 25th, 2015
Closing force adjustable gas lubrication mechanically-sealing apparatus online is planted, utilizes external pressure supply promotion stationary ring realization closing force in this application
Adjusting, need to guarantee that pressure is stablized, while there may be axial floats.It can see from existing technology, existing machine
Tool seal preload regulating mechanism is all complex, needs external device (ED) collective effect.
Summary of the invention
The present invention is complex for current mechanical seal pretightening force controlling mechanism, the not high problem of reliability, proposes
A kind of mechanical seal pretightning force on-line control mechanism, can be realized the accurate adjusting to seal face pretightning force, suitable for adopting
With the mechanically-sealing apparatus of rotating ring compensation or stationary ring compensation.
Mechanical seal pretightning force on-line control mechanism provided by the invention, applied mechanical sealing member includes moving ring assembly
And static components, moving ring assembly are fixed on transmission shaft, static components are mounted on test cavity shell.The on-line control machine
Structure includes: spiral micrometer head, stop screw, spiral micrometer head end cap, supporing shell, compression sensor, three foot throw-out collars, stationary ring
Installation set.The supporing shell, three foot throw-out collars, test cavity shell and transmission shaft are coaxial.
3 spiral micrometer heads are installed with 120 degree of intervals on the circumferential surface of supporing shell, the spiral micrometer head passes through spiral shell
Line is axially fixed in supporing shell, and the end of spiral micrometer head is equipped with spiral micrometer head end cap, adjusts spiral micrometer head end
Cap angle, so that spiral micrometer head end cap plane and transmission shaft is axially vertical；Two are symmetrically installed on the circumferential surface of supporing shell
A stop screw, the stop screw are axially fixed in supporing shell by screw thread；The supporing shell is mounted on examination
It tests outside cavity shell, axial elongation is adjusted by the spiral micrometer head.
The three foot throw-out collars are compression sensor base, and the front of three foot throw-out collars has the support of three circumferential equal parts
Foot, the back side are provided with the mounting groove of circumferential direction equal part at three, and open there are two limit hole；The compression sensor is fixedly mounted on
In mounting groove, the spiral micrometer head end cap is put into the mounting groove, and remains plane with compression sensor
Contact；The stop screw passes through the limit hole of three foot throw-out collars, so that three foot throw-out collars can only be axially moved；The limit
Position screw is parallel to the axial direction of transmission shaft；The support leg and stationary ring installation set of the three foot throw-out collars remain close contact.
The static components are mounted on test cavity shell by stationary ring installation set, and are fitted closely with moving ring assembly.
Compared with prior art, the present invention having the advantage that
(1) present invention realizes the online adjustable of mechanical seal pretightning force, to mechanical seal by simple regulating mechanism
Performance and life search play an important role.Compared to other regulative modes, of the invention is simple and reliable for structure, does not need outside
Power device.Sensor uses existing matured product, and precision is higher while being easily installed.
(2) three foot throw-out collars are movement to be limited by stop screw, therefore will not occur in axial movement in the present invention
Obvious deflection, and then guarantee that pretightning force is uniformly distributed.Meanwhile for various sizes of mechanical seal, designed size can be passed through
The three foot throw-out collars matched realize identical function, and dismounting is simple, and replacement cost is low.
(3) the present invention is directed mechanical seal, three foot throw-out collars push stationary ring installation set to be axially moved, adjustment spring compression
Amount achievees the purpose that stationary ring compensates to adjustment spring pretightning force.Rotating ring compensation can also sample the structure.
(4) present invention converts the adjusting of pretightning force to the elongation of spiral micrometer head by reasonable design mechanical structure
Amount is adjusted, and realizes that axial elongation accurately adjusts using spiral micrometer head, and realize using high-precision compression sensor
The on-line checking of pretightning force realizes pretightning force on-line control under the premise of not changing actual condition, simple and convenient.
Detailed description of the invention
Fig. 1 is the cross-sectional view of seal preload regulating mechanism of the invention；
Fig. 2 is three foot throw-out collar main views in seal preload regulating mechanism of the present invention；
Fig. 3 is the three left cross-sectional views of foot throw-out collar in seal preload regulating mechanism of the present invention；
Fig. 4 is three foot throw-out collar rearviews in seal preload regulating mechanism of the present invention；
Fig. 5 is the upper and lower two isogonism axis side views of three foot throw-out collars in seal preload regulating mechanism of the present invention.
In figure:
1- spiral micrometer head, 2- stop screw, 3- spiral micrometer head end cap, 4- supporing shell, 5- compression sensor, 6-
Three foot throw-out collars, 7- test cavity shell, 8- install screw, 9- sealing ring, 10- stationary ring installation set, 11- static components, 12- rotating ring group
Part, 13- transmission shaft, 14- limit hole, 15- through-hole, 16- throw-out collar support leg, 17- mounting groove.
Specific embodiment
The present invention is understood and implemented for the ease of those of ordinary skill in the art, and the present invention is made into one with reference to the accompanying drawing
The detailed and deep description of step.
The present invention is directed in the research of mechanical sealing performance, and the size of pretightning force is to the liquid in the dynamic and static ring of mechanical seal
Film thickness has great influence, is directly related to the performance and used life of mechanical seal.Existing regulative mode is all more multiple
Miscellaneous, reliability is not high, and the application value in mechanically-sealing apparatus research is not high.The present invention in order to solve stationary ring compensation machinery
Seal preload on-line control problem proposes a kind of mechanical seal pretightning force on-line control mechanism.
As shown in Figure 1, being seal preload regulating mechanism of the invention, including such as lower component: spiral micrometer head 1, limit
Screw 2, spiral micrometer head end cap 3, supporing shell 4, compression sensor 5, three foot throw-out collars 6, test cavity shell 7 and installation screw
8；Related component includes sealing ring 9, stationary ring installation set 10, static components 11, moving ring assembly 12 and transmission shaft 13.Such as Fig. 2-
It is three foot throw-out collars 6 in seal preload regulating mechanism of the present invention shown in 5.Three foot throw-out collars 6 include: limit hole 14, through-hole 15,
Throw-out collar support leg 16 and mounting groove 17.
As shown in Figure 1, supporing shell 4, three foot throw-out collars 6, test cavity shell 7 and transmission shaft 13 are coaxial.In 4 axis of supporing shell
3 spiral micrometer heads 1 are installed with 120 degree of intervals on cross section, that is, circumferential surface, each spiral micrometer head 1 passes through screw thread axial restraint
In supporing shell 4.Spiral micrometer head end cap 3 is installed in the end of spiral micrometer head 1, adjusts the angle of spiral micrometer head end cap 3,
Guarantee 3 plane of spiral micrometer head end cap is axially vertical with transmission shaft 13.Spiral micrometer head end cap 3 is put into the peace of three foot throw-out collars 6
In tankage 17.It is symmetrically installed 2 stop screws 2 on 4 axial cross section of supporing shell, each stop screw 2 is with thread forms
It is axially fixed in supporing shell 4.Each stop screw 2 passes through the limit hole 14 of three foot throw-out collars 6, guarantees that three foot throw-out collars 6 can only be
It is axially moved.
As shown in Figure 2-5, three foot throw-out collars 16 are the pedestal of compression sensor 5, and the front of three foot throw-out collars 16 has three
The support leg 16 of circumferential equal part, the back side are provided with the mounting groove 17 of circumferential direction equal part at three.Compression sensor 5 is fixedly mounted on three feet
In the mounting groove 17 of throw-out collar 6.It is opened in each mounting groove 17 there are two through-hole 15, compression sensor 5 is passed through by installation screw 8
Through-hole 15 is fixed in mounting groove 17.Adjustment installation screw 8 guarantees that the axial direction of 5 end face of compression sensor and transmission shaft 13 is hung down
Directly.Spiral micrometer head end cap 3 is put into mounting groove 17, remains plane contact with compression sensor 5.
It is symmetrically opened on three foot throw-out collars 16 there are two limit hole 14, limit hole 14 and stop screw 2 cooperate.Stop screw 2 is worn
The limit hole 14 opened on three foot throw-out collars 6 is crossed, guarantees that three foot throw-out collars 6 can only be axially moved.Guarantee that three foot throw-out collars 6 can only be in axial direction
Movement, the guarantee of 3 plane of spiral micrometer head end cap are fitted closely perpendicular to axial direction, and with compression sensor 5, are provided to guarantee
The transmitting of compression is always axially and without the interference of other stress.
In on-line control mechanism of the invention, supporing shell 4 be mounted on test cavity shell 7 outside, throw-out collar support leg 16 with it is quiet
Ring installation set 10 remains close contact, and static components 11 are pushed by spring assembly and fitted closely with moving ring assembly 12, begins
Closing force is provided by spring eventually.Realize that axial elongation accurately adjusts using the spiral micrometer head 1 installed in supporing shell 4,
Achieve the purpose that adjust stationary ring pretightning force size by adjusting 3 spiral micrometer heads 1.
Moving ring assembly 12 is fixedly mounted on transmission shaft 13, and keeps opposing stationary with transmission shaft 13.Stationary ring installation set 10
It covers outside static components 11, the two is fixed together.10 sets of stationary ring installation set in test cavity shell 7, and with test cavity shell 7 it
Between be provided with sealing ring 9 and be sealed fastening.Static components 11 are by the spring assembly promotion in it and close with moving ring assembly 12
Fitting.
Further, the compression sensor 5 of the embodiment of the present invention uses the flat tension and compression stress of high-precision micro of standard
Sensor can convert electric signal for one-way compressive stress and export in real time.Compression sensor 5 uses existing matured product, easily
Precision is higher while installation.
The test cavity shell 7 of the embodiment of the present invention realizes sealing by the mechanical seal that stationary ring compensates.Mechanical seal is common to be changed
The mode for becoming washer quantity changes the amount of spring compression in static components 11, and unlike existing, the present invention is pushed away using three feet
Ring 6 pushes stationary ring installation set 10.Stationary ring installation set 10 limits displacement by sealing ring 9, can only be mobile in axial small range, because supplemented by
It helps 9 axial force of sealing ring small, and the adjustment process of pretightning force is slow, therefore auxiliary seal can be ignored to axial stress
Influence.
The present invention is adjusting 3 spiral micrometer heads 1 to guarantee that the seal face pretightning force compensated stationary ring is uniformly distributed
When guarantee three compression sensors 5 export unanimously.
During adjusting pretightning force, seal face causes sealing medium to leak because compression is too small,
Minimum pretightning force size need to be set, which in actual operation, is estimated by measuring medium leakage rate.
The present invention requires height to the axial depth of parallelism, therefore when designing and processing part, needs to guarantee enough essences
Degree reduces because being axially displaced from bring error.
When installing mechanical seal pretightning force on-line control mechanism of the invention, first by supporing shell 4 and test cavity shell 7
Connection installs spiral micrometer head end cap 3 after fixing spiral micrometer head 1, is screwed into stop screw 2, then will install compression biography
Three foot throw-out collars 6 of sensor 5 pass through stop screw 2, adjust 1 elongation of spiral micrometer head, guarantee three foot throw-out collars 6 perpendicular to axial direction,
It is finally sequentially placed into stationary ring installation set 10, static components 11 and moving ring assembly 12, completes the assembling of test cavity seal face.
Ensure that test cavity installs and checks errorless, import test(ing) medium, improves test cavity oil temperature and oil pressure to specified
Value.5 power supply of compression sensor is connected, on-line checking compression sensor 5 exports, and adjusts the elongation of three spiral micrometer heads 1
Amount, guarantees that the output of three compression sensors 5 is consistent, and total stress is desired mechanical seal pretightning force.By guaranteeing three
Place's compression sensor 5 exports unanimously, and then guarantees that mechanical seal pretightning force is evenly distributed in stationary ring installation set 10, to protect
Card seal face closing force is uniformly distributed.The wear rate of mechanical seal in operation is minimum, dynamic caused by the abrasion of short time internal cause,
Stationary ring change in size can almost be ignored, and the preloading spring on stationary ring compensates the abrasion loss, guarantee that dynamic and static ring closely pastes always
It closes.The decrement variation of preloading spring changes in reflection to the output of compression sensor 5 when there is obvious compression, or
When person needs to study influence of the pretightning force to mechanical sealing performance and service life, the elongation of spiral micrometer head 1 can actively regulate,
And then change pretightning force.Since the sealing performance and pretightning force of mechanical seal are closely related, in pretightning force adjustment process, need
Guaranteeing that compression is greater than allows minimal closure power, that is, guarantees that minimum sealing performance requirement causes safety in order to avoid sealing medium leaks
Hidden danger.
The present invention is for the pretightning force regulation problem in mechanical seal, by reasonable design mechanical structure, by pretightning force
Adjusting be converted into spiral micrometer head 1 elongation adjust, and using high-precision compression sensor 5 realize pretightning force
Line detection realizes pretightning force on-line control under the premise of not changing actual condition.
Design principle of the invention, mechanical structure, realization function and technical characterstic is described in detail in the above content.
Above-mentioned demonstrative example does not represent interest field of the invention, this example and attached drawing should not be considered as to the limitation model of claim
It encloses.Concrete right of the present invention is required refering to claims.
Claims (7)
1. a kind of mechanical seal pretightning force on-line control mechanism, applied mechanical sealing member include moving ring assembly and stationary ring group
Part, moving ring assembly are fixed on transmission shaft, and static components are mounted on test cavity shell, which is characterized in that the online tune
Section mechanism include: spiral micrometer head, stop screw, spiral micrometer head end cap, supporing shell, compression sensor, three foot throw-out collars,
Stationary ring installation set；The supporing shell, three foot throw-out collars, test cavity shell and transmission shaft are coaxial；
3 spiral micrometer heads are installed with 120 degree of intervals on the circumferential surface of supporing shell, the spiral micrometer head passes through thread spindle
To being fixed in supporing shell, the end of spiral micrometer head is equipped with spiral micrometer head end cap, adjusts spiral micrometer head end cap angle
Degree, so that spiral micrometer head end cap plane and transmission shaft is axially vertical；Two limits are symmetrically installed on the circumferential surface of supporing shell
Position screw, the stop screw are axially fixed in supporing shell by screw thread；The supporing shell is mounted on test cavity
Outside shell, axial elongation is adjusted by the spiral micrometer head；
The three foot throw-out collars are compression sensor base, and the front of three foot throw-out collars has the support leg of three circumferential equal parts,
The back side is provided with the mounting groove of circumferential direction equal part at three, and opens there are two limit hole；The compression sensor is fixedly mounted on peace
In tankage, the spiral micrometer head end cap is put into the mounting groove, and remains that plane connects with compression sensor
Touching；The stop screw passes through the limit hole of three foot throw-out collars, so that three foot throw-out collars can only be axially moved；The limit
Screw is parallel to the axial direction of transmission shaft；The support leg and stationary ring installation set of the three foot throw-out collars remain close contact；
The static components are mounted on test cavity shell by stationary ring installation set, and are fitted closely with moving ring assembly.
2. on-line control mechanism according to claim 1, which is characterized in that the bottom of the mounting groove of the three foot throw-out collars
It is provided with through-hole, compression sensor is fixed in mounting groove by installation screw by through-hole, and adjustment installation screw makes compression
The end face of sensor and transmission shaft it is axially vertical.
3. on-line control mechanism according to claim 1, which is characterized in that when the on-line control mechanism is installed, first
Supporing shell is connect with test cavity shell, spiral micrometer head end cap is installed after spiral micrometer head is fixed, is screwed into stop screw,
The three foot throw-out collars for installing compression sensor are passed through into stop screw again, spiral micrometer head elongation are then adjusted, so that three
Foot throw-out collar is finally sequentially placed into stationary ring installation set, static components and moving ring assembly perpendicular to axial direction.
4. on-line control mechanism according to claim 1 or 3, which is characterized in that the static components are by spring assembly
It pushes and is fitted closely with moving ring assembly, the decrement of spring pushes stationary ring installation set to adjust using three foot throw-out collars.
5. on-line control mechanism according to claim 1 or 3, which is characterized in that the on-line control mechanism adjusts three
A spiral micrometer head guarantees that three compression sensor outputs are consistent.
6. on-line control mechanism according to claim 1, which is characterized in that the compression sensor is using miniature flat
Flat-shaped tension and compression strain gauge.
7. on-line control mechanism according to claim 3, which is characterized in that in the assembling for completing test cavity seal face
Afterwards, test(ing) medium is imported, improves test cavity oil temperature and oil pressure to rated value；Connect compression probe power, on-line checking pressure
The output of strain gauge adjusts the elongation of 3 spiral micrometer heads, guarantees that the output of 3 compression sensors is consistent, and
Total stress is desired mechanical seal pretightning force；The decrement variation of preloading spring in static components senses reflection to compression
In the output of device, change when obvious compression occurs in compression sensor, or need to study pretightning force to mechanical sealing performance
When with the influence in service life, the elongation of spiral micrometer head is actively adjusted, changes pretightning force；In pretightning force adjustment process, need
Greater than minimum pretightning force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302680.5A CN110131416B (en) | 2019-04-16 | 2019-04-16 | Online adjusting mechanism of mechanical seal pretightning force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302680.5A CN110131416B (en) | 2019-04-16 | 2019-04-16 | Online adjusting mechanism of mechanical seal pretightning force |
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| Publication Number | Publication Date |
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| CN110131416A true CN110131416A (en) | 2019-08-16 |
| CN110131416B CN110131416B (en) | 2020-10-13 |
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| CN201910302680.5A Expired - Fee Related CN110131416B (en) | 2019-04-16 | 2019-04-16 | Online adjusting mechanism of mechanical seal pretightning force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503249A (en) * | 2020-06-29 | 2020-08-07 | 江苏国茂减速机股份有限公司 | Intelligent monitoring type speed reducer double-seal structure |
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|---|---|---|---|---|
| DE3925944A1 (en) * | 1989-08-05 | 1991-02-14 | Pacific Wietz Gmbh & Co Kg | Fluid seal between shaft and machine housing - consists of slide piece with counter-slide piece, compression piece of annular metal discs |
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| CN203035959U (en) * | 2012-12-14 | 2013-07-03 | 中冶宝钢技术服务有限公司 | Mechanical seal adjusting device of sink roller |
| CN103791095A (en) * | 2014-03-06 | 2014-05-14 | 重庆广播电视大学 | Automatic pre-tightening mechanical seal assembly |
| CN205479355U (en) * | 2016-01-18 | 2016-08-17 | 广州安卓机械科技有限公司 | Sink roll mechanical seal's screw rod device |
| CN206130096U (en) * | 2016-10-25 | 2017-04-26 | 浙江大学 | High temperature mechanical seal structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503249A (en) * | 2020-06-29 | 2020-08-07 | 江苏国茂减速机股份有限公司 | Intelligent monitoring type speed reducer double-seal structure |
| WO2022001099A1 (en) * | 2020-06-29 | 2022-01-06 | 江苏国茂减速机股份有限公司 | Intelligent monitoring type double-sealing structure for decelerator |
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