CN109027237A - A kind of mixing sealing structure applied in high pressure differential environment - Google Patents
A kind of mixing sealing structure applied in high pressure differential environment Download PDFInfo
- Publication number
- CN109027237A CN109027237A CN201811107970.6A CN201811107970A CN109027237A CN 109027237 A CN109027237 A CN 109027237A CN 201811107970 A CN201811107970 A CN 201811107970A CN 109027237 A CN109027237 A CN 109027237A
- Authority
- CN
- China
- Prior art keywords
- end cap
- ring
- main shaft
- hole
- air blowing
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000007664 blowing Methods 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 6
- 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 claims description 20
- 238000000605 extraction Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000007921 spray Substances 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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
-
- 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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
Abstract
A kind of mixing sealing structure applied in high pressure differential environment, is applied under the conditions of shorter axial dimension, to control the high-pressure fluid leakage harm of sealed environment.It includes the lip-shaped sealed ring and air blowing ring between main shaft, the bearing in the work head and main shaft that main shaft shaft end is arranged in, lip-shaped sealed ring and air blowing ring left and right settings are simultaneously equipped with end cap in the outside of the two, annular air cavity is surrounded between the end cap, lip-type packing, air blowing ring and main shaft, it is equipped with first through hole on end cap, the gas hole that first through hole and annular air cavity are connected together is equipped on air blowing ring.The sealing structure good airproof performance, and hermetic seal is realized by the compressed air of cleanliness without any pollution, and together with the sealing function of lip-shaped sealed ring, can use in very short main-axis end.
Description
Technical field
The present invention relates to bearing seal technical field, specifically a kind of mixing applied in high pressure differential environment is sealed
Structure.
Background technique
The sealing of high-speed rotating shaft mostly use mechanical seal unit, magnet fluid sealing unit, compressed gas sealing unit or
Person's labyrinth seal structure, wherein mechanical seal unit and magnet fluid sealing unit belong to contact sealing, and sealing effect is good, but makes
Valence is high, axial dimension is long, is difficult to apply in certain circumstances.Compressed gas sealing unit be suitable for sealed environment and need every
From the little environment of extraneous pressure difference, when the pressure difference of the two is bigger, or there are when highly pressurised liquid, sealing state is difficult to meet
Control the technical requirements of leakage.Labyrinth seal, in shaft high speed rotation, sealing element and shaft must retain suitable gap,
Often through the method for the length for extending contact surface, the pressure of leakage is gradually reduced, the effect of sealing is finally reached, height is turned
It can not be met the requirements when strictly limiting axial dimension under fast environment.
Summary of the invention
The purpose of the present invention is to provide a kind of mixing sealing structures applied in high pressure differential environment, which can
To apply under the conditions of shorter axial dimension, and it can prevent the high-pressure fluid of sealed environment from revealing and endanger main shaft bearing.
The technical scheme adopted by the invention to solve the technical problem is that: a kind of mixing applied in high pressure differential environment is close
Seal structure, characterized in that it includes the lip between main shaft, the bearing in the work head and main shaft that main shaft shaft end is arranged in
Type sealing ring and air blowing ring, lip-shaped sealed ring and air blowing ring left and right settings are simultaneously equipped with end cap, the end cap, lip in the outside of the two
Annular air cavity is surrounded between shape sealing ring, air blowing ring and main shaft, first through hole is equipped on end cap, being equipped on air blowing ring will
The gas hole that first through hole and annular air cavity are connected together.
Further, left and right settings and the seal closure and pedestal that are fixedly connected are equipped in the outside of main shaft, end cap with it is close
Sealing cover, pedestal contact, and annular notch is equipped on the outer wall of air blowing ring, forms annular groove between annular notch and end cap；It is holding
The lower part of lid is provided with the second through-hole, the air flue that portion is equipped with gas nozzle and gas nozzle and first through hole are connected together on the base,
In the draining tunnel that pedestal lower part is equipped with oil extraction mouth and oil extraction mouth and the second through-hole are connected together；It is equipped on the top of seal closure
Inlet nozzle is equipped with oil return nozzle in the lower part of seal closure.
Further, O-ring seal is equipped between end cap and the contact surface of seal closure.
Further, nut is equipped between main shaft and the inner ring of bearing.
Further, it is fixedly connected between end cap and pedestal by the first screw.
The beneficial effects of the present invention are: a kind of mixing sealing structure applied in high pressure differential environment provided by the invention,
Work head is fixed in shaft, and the highly pressurised liquid that work head needs is entered in seal closure by inlet nozzle, in work head and bearing
Between setting mixing sealing structure, i.e., mixing sealing is realized using lip-shaped sealed ring and hermetic seal.Above structure is controlled to greatest extent
It has made contact band under main shaft high speed rotation state and has carried out the problem that speed is low, the service life is short, compressed air is utilized to assist realizing
Sealing, not only cleanliness without any pollution but also pressure adjustable section, can be effectively protected main shaft bearing.In addition, the structure can also hinder
It keeps off various impurity and enters bearing through gap everywhere, to avoid bearing from the damage of various impurity, and then improve spindle shaft
The service life held.The structure integral seal structure is simple, convenient and practical, does not influence spindle nose space；Shorten main shaft
Cantilever improves main shaft rigidity.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure: 1 oil return nozzle, 2 seal closures, 3 work heads, 4 first screws, 5 shafts, 6 inlet nozzles, 7 lip-type packings, 8 O
Shape sealing ring, 9 gas nozzles, 10 air blowing rings, 101 gas holes, 102 annular grooves, 11 end caps, 111 first through hole, 112 second through-holes, 12 spiral shells
Mother, 13 pedestals, 131 air flues, 132 draining tunnels, 14 second screws, 15 bearings, 16 oil extraction mouths, 17 main shafts.
Specific embodiment
As shown in Figure 1, the invention mainly comprises oil return nozzle, seal closure 2, work head 3, the first screws 4, shaft 5, inlet nozzle
6, lip-type packing 7, O-ring seal 8, gas nozzle 9, air blowing ring 10, end cap 11, nut 12, main shaft 13, the second screw 14, axis
15 and oil extraction mouth 16 are held, present invention will now be described in detail with reference to the accompanying drawings..
End cap 11 is a sub-assembly, two annulus including left and right settings, wherein the annulus outer diameter in left side is greater than right side
Annulus outer diameter.End cap is whole in a ring, and air blowing ring 10 is also ring structure, and annular notch is equipped on the outer wall of air blowing ring,
After air blowing ring is mounted between end cap and main shaft, annular groove is formed between annular notch and end cap.It is set on the top of air blowing ring
There is the gas hole 101 being disposed radially, the inner side and outer side of air blowing ring is connected together by gas hole.Between air blowing ring and end cap
Interference fit, is installed together by the way of press fitting.Pedestal 13 is hollow ring structure, by the between end cap and pedestal
One screw 4 is fixed together.It is equipped with gas nozzle 9 on the outer wall of pedestal, is equipped with air flue 131, gas nozzle and air flue on the base
Directly it is connected to.End cap is nested on main shaft 17, between end cap and main shaft be equipped with lip-type packing 7, lip-type packing with
It is contacted between main shaft, lip-shaped sealed ring and end cap.The left end of end cap, lip-shaped sealed ring and air blowing is arranged in lip-shaped sealed ring
It is contacted between the left side of ring, is fixed with shaft 5 in the end of main shaft, work head 3 is fixed in shaft, on main shaft
It is fixed that there are two bearing 15, the outer ring of bearing is fixedly connected with the right side of end cap, at the same time, the outer ring of bearing and pedestal
Inner wall is fixedly connected, relatively fixed between such end cap and pedestal.The inner ring of bearing is fixedly connected by nut 12 with main shaft,
Connection is relatively rotated in this way between main shaft and pedestal.
The first through hole 111 being connected to air flue is equipped on end cap, after being blown into air into air flue by gas nozzle in this way, into
Air in air entering flue enters in annular groove through first through hole, and compressed air is through overbunching and is uniformly distributed, and passes through gas hole high speed
It sprays and enters in annular air cavity, annular air cavity is surrounded by the gap between lip-shaped sealed ring, air blowing ring, end cap and main shaft.
It is fixed with oil extraction mouth 16 in the bottom of pedestal, is equipped with vertical draining tunnel 132, the lower end of draining tunnel and oil extraction in the lower part of pedestal
Mouth connection.It is equipped with the second through-hole 112 in the lower part of end cap, the second through-hole is connected to draining tunnel, passes through the second through-hole, excretion in this way
The liquid and compressed air in road and the discharge leakage of oil extraction mouth.
Seal closure 2 is hollow structure, and seal closure is fixedly connected by the second screw 14 with pedestal.Shaft and work head are all provided with
It is placed in the inner cavity of seal closure, the inner wall of seal closure right end is contacted with the big end outer wall of end cap, and in the big end and sealing of end cap
O-ring seal 8 is equipped between cover, to guarantee good leakproofness.It is equipped with inlet nozzle 6 at the top of seal closure, in seal closure
Bottom is equipped with oil return nozzle 1.
In use, being filled with compressed air into air flue by the gas nozzle 9 on pedestal, the compressed air in air flue is after through
One through-hole enters in annular groove, and subsequent compressed air is through overbunching and is evenly distributed with, and the compressed air in annular groove is through gas hole high speed ejection
To annular air cavity.Compressed air reassemble herein with it is evenly dispersed, formed annular the pressure cuff being evenly distributed, a side
The lip that lip-shaped sealed ring is lifted in face guarantees good sealing, on the other hand avoids a large amount of leakages of highly pressurised liquid, furthermore will let out
The liquid of leakage is discharged through the draining tunnel 132 on the second through-hole, pedestal.
Work head is fixed in shaft, and the highly pressurised liquid that work head needs is entered in seal closure by inlet nozzle, is being worked
Head mixes sealing structure with setting between bearing, i.e., realizes mixing sealing using lip-shaped sealed ring and hermetic seal.Above structure is most
Limits control contact band under main shaft high speed rotation state and carry out the problem that speed is low, the service life is short, utilize compressed air
Auxiliary realizes sealing, and not only cleanliness without any pollution but also pressure adjustable section, can be effectively protected main shaft bearing.In addition, the structure
Various impurity can also be stopped to enter bearing through gap everywhere, to avoid bearing from the damage of various impurity, Jin Erti
The service life of high main shaft bearing.The structure integral seal structure is simple, convenient and practical, does not influence spindle nose space；Shorten
The cantilever of main shaft improves main shaft rigidity.
Claims (5)
1. a kind of mixing sealing structure applied in high pressure differential environment, characterized in that it includes main shaft, is arranged in main shaft
The lip-shaped sealed ring and air blowing ring between bearing in the work head and main shaft of shaft end, lip-shaped sealed ring and air blowing ring or so are set
It sets and is equipped with end cap in the outside of the two, surround annular air cavity between the end cap, lip-type packing, air blowing ring and main shaft,
It is equipped with first through hole on end cap, the gas hole that first through hole and annular air cavity are connected together is equipped on air blowing ring.
2. a kind of mixing sealing structure applied in high pressure differential environment according to claim 1, characterized in that in main shaft
The seal closure and pedestal that the outside of body is equipped with left and right settings and is fixedly connected, end cap is contacted with seal closure, pedestal, in air blowing ring
Outer wall be equipped with annular notch, form annular groove between annular notch and end cap；The lower part of end cap is provided with the second through-hole,
The air flue that pedestal top is equipped with gas nozzle and gas nozzle and first through hole are connected together is equipped with oil extraction mouth in pedestal lower part and will arrange
The draining tunnel that oil nozzle and the second through-hole are connected together；It is equipped with inlet nozzle on the top of seal closure, is equipped in the lower part of seal closure
Oil return nozzle.
3. a kind of mixing sealing structure applied in high pressure differential environment according to claim 2, characterized in that in end cap
O-ring seal is equipped between the contact surface of seal closure.
4. a kind of mixing sealing structure applied in high pressure differential environment according to claim 2, characterized in that in main shaft
Nut is equipped between body and the inner ring of bearing.
5. a kind of mixing sealing structure applied in high pressure differential environment according to claim 3, characterized in that end cap with
It is fixedly connected between pedestal by the first screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107970.6A CN109027237A (en) | 2018-09-21 | 2018-09-21 | A kind of mixing sealing structure applied in high pressure differential environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107970.6A CN109027237A (en) | 2018-09-21 | 2018-09-21 | A kind of mixing sealing structure applied in high pressure differential environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109027237A true CN109027237A (en) | 2018-12-18 |
Family
ID=64617969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811107970.6A Pending CN109027237A (en) | 2018-09-21 | 2018-09-21 | A kind of mixing sealing structure applied in high pressure differential environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109027237A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005826A (en) * | 2019-04-30 | 2019-07-12 | 北京长峰金鼎科技有限公司 | A kind of discharge valve |
| CN111185798A (en) * | 2020-02-26 | 2020-05-22 | 四川轻化工大学 | Multistage composite sealing device based on rotary table |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0189829A2 (en) * | 1985-01-25 | 1986-08-06 | Blohm + Voss Ag | Method for removing the leaking liquid from a leakage chamber and sealing arrangement of a propeller shaft therefor |
| JP2004245267A (en) * | 2003-02-12 | 2004-09-02 | Japan Steel Works Ltd:The | High-pressure shaft sealing method |
| CN201103686Y (en) * | 2007-09-11 | 2008-08-20 | 大连华根机械有限公司 | Principal shaft sealing device |
| CN203730763U (en) * | 2014-03-10 | 2014-07-23 | 山东新马制药装备有限公司 | Wet-type granulator spindle compressed air blowing sealing device |
| CN205956392U (en) * | 2016-08-28 | 2017-02-15 | 梁拾战 | Pressure type seal structure |
| CN107269712A (en) * | 2017-07-26 | 2017-10-20 | 广西柳航墙材工业有限公司 | A kind of sealing structure of high-efficiency helical vacuum extruding form machine |
| CN208858926U (en) * | 2018-09-21 | 2019-05-14 | 山东洛轴所轴承研究院有限公司 | A kind of mixing sealing structure applied in high pressure differential environment |
-
2018
- 2018-09-21 CN CN201811107970.6A patent/CN109027237A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0189829A2 (en) * | 1985-01-25 | 1986-08-06 | Blohm + Voss Ag | Method for removing the leaking liquid from a leakage chamber and sealing arrangement of a propeller shaft therefor |
| JP2004245267A (en) * | 2003-02-12 | 2004-09-02 | Japan Steel Works Ltd:The | High-pressure shaft sealing method |
| CN201103686Y (en) * | 2007-09-11 | 2008-08-20 | 大连华根机械有限公司 | Principal shaft sealing device |
| CN203730763U (en) * | 2014-03-10 | 2014-07-23 | 山东新马制药装备有限公司 | Wet-type granulator spindle compressed air blowing sealing device |
| CN205956392U (en) * | 2016-08-28 | 2017-02-15 | 梁拾战 | Pressure type seal structure |
| CN107269712A (en) * | 2017-07-26 | 2017-10-20 | 广西柳航墙材工业有限公司 | A kind of sealing structure of high-efficiency helical vacuum extruding form machine |
| CN208858926U (en) * | 2018-09-21 | 2019-05-14 | 山东洛轴所轴承研究院有限公司 | A kind of mixing sealing structure applied in high pressure differential environment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005826A (en) * | 2019-04-30 | 2019-07-12 | 北京长峰金鼎科技有限公司 | A kind of discharge valve |
| CN111185798A (en) * | 2020-02-26 | 2020-05-22 | 四川轻化工大学 | Multistage composite sealing device based on rotary table |
| CN111185798B (en) * | 2020-02-26 | 2024-05-24 | 四川轻化工大学 | Multistage compound sealing device based on revolving stage |
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