CN106763782B - A kind of buffer fluid flowage structure of mechanical seal - Google Patents

A kind of buffer fluid flowage structure of mechanical seal Download PDF

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Publication number
CN106763782B
CN106763782B CN201710169476.1A CN201710169476A CN106763782B CN 106763782 B CN106763782 B CN 106763782B CN 201710169476 A CN201710169476 A CN 201710169476A CN 106763782 B CN106763782 B CN 106763782B
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CN
China
Prior art keywords
axle sleeve
stationary
seat
ring
rotating
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CN201710169476.1A
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Chinese (zh)
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CN106763782A (en
Inventor
乐华昌
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Mechanical Sealing Element Co Ltd Of Fenghua City Nld
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Mechanical Sealing Element Co Ltd Of Fenghua City Nld
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Publication of CN106763782A publication Critical patent/CN106763782A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/40Sealings between relatively-moving surfaces by means of fluid

Abstract

A kind of buffer fluid flowage structure of mechanical seal disclosed by the invention, including axle sleeve, the first stationary seat, rotating seat, the second stationary seat are sequentially provided on axle sleeve, axle sleeve outer wall is additionally provided with the shell with axle sleeve socket cooperation, first stationary ring and the first rotating ring cooperatively form media end friction pair, and it is secondary that the second stationary ring and the second rotating ring cooperatively form atmosphere end friction;Further include external seal chamber, circular passage and interior sealing chamber, first rotating ring is provided with the helicla flute being connected to interior sealing chamber with the axle sleeve place of offseting, several first through hole for being circumferentially distributed and being connected to circular passage and external seal chamber are provided on axle sleeve, several the second through-holes for being circumferentially distributed and being connected to circular passage and interior sealing chamber are additionally provided on axle sleeve, first through hole is different with the outer diameter at axle sleeve position residing for the second through-hole.Simple and reasonable, good cooling results are convenient to use, reduce cost.

Description

A kind of buffer fluid flowage structure of mechanical seal
Technical field
The present invention relates to technical field of mechanical, more particularly to the buffer fluid flowage structure of a kind of mechanical seal.
Background technology
Mechanical seal refers to perpendicular to the end face of rotation axis by least a pair in Fluid pressure and compensation mechanism elastic force(Or Magnetic force)Under the action of and the cooperation of auxiliary seal under keep be bonded and constituted with respect to sliding prevent fluid leak dress It sets.Mechanical seal is the equipment such as a kind of gland seal device of rotating machinery, such as centrifugal pump, centrifuge, reaction kettle and compressor.By It is applied in inside and outside equipment in transmission shaft, in this way, there are a circumferential clearance between axis and equipment, the medium in equipment passes through this Gap leaks out, if pressure subatmospheric in equipment, air is to equipment internal leakage, it is therefore necessary to which there are one prevent leakage Gland seal device.Common mechanical seal is all to realize sealing by offseting friction between rotating ring and stationary ring, in the high speed of axis Rub a large amount of heat of generation in operating, between rotating ring and stationary ring, and the frictional force between rotating ring and stationary ring is also increasingly Greatly, it is damaged caused by rotating ring and stationary ring very big.It generally requires by injecting buffer fluid in mechanical seal to rotating ring and quiet Ring realizes cooling and lubrication, however the structure of existing mechanical seal cooling and lubrication is complex, while setting being needed to recycle Pump installation, cost are higher.
Invention content
In view of the deficiencies of the prior art and defect, the present invention provide a kind of buffer fluid flowage structure of mechanical seal, Simple and reasonable, good cooling results are convenient to use, reduce cost.
To achieve the above object, the present invention uses following technical scheme.
A kind of buffer fluid flowage structure of mechanical seal, including axle sleeve are sequentially provided with the first stationary seat, dynamic on axle sleeve Ring seat, the second stationary seat, axle sleeve outer wall are additionally provided with the shell with axle sleeve socket cooperation, and it is quiet to be provided with first on the first stationary seat Be provided on ring, rotating seat with matched first rotating ring of the first stationary ring, the second stationary ring is provided on the second stationary seat, on shell Be provided with matched second rotating ring of the second stationary ring, it is secondary that the first stationary ring and the first rotating ring cooperatively form media end friction, second Stationary ring and the second rotating ring cooperatively form atmosphere end friction pair, and the first stationary seat and the second stationary seat are fixedly connected on axle sleeve, move Ring seat is fixedly connected on shell;
External seal chamber is formed between second stationary seat, rotating seat, atmosphere end friction pair and shell, is formed between axle sleeve and axis Have a circular passage, media end friction is secondary to form interior sealing chamber between axle sleeve, the first rotating ring and the axle sleeve place of offseting be provided with it is interior It is logical to be provided with several first for being circumferentially distributed and being connected to circular passage and external seal chamber on axle sleeve for the helicla flute of seal chamber connection Hole, is additionally provided with several the second through-holes for being circumferentially distributed and being connected to circular passage and interior sealing chamber on axle sleeve, first through hole with The outer diameter at axle sleeve position residing for the second through-hole is different.
Further, the outflow port of rotating seat and shell, outflow port and helicla flute are provided through on rotating seat and shell Connection.
Further, the flow inlet being connected to external seal chamber is provided on shell.
Further, the third through-hole of connection external seal chamber and first through hole is additionally provided on rotating seat.
Further, between the first stationary seat and axle sleeve, between the second stationary seat and axle sleeve, between rotating seat and shell It is fixedly connected by holding screw.
Compared with prior art, beneficial effects of the present invention are:The buffer fluid flowage structure of the present invention, which is only provided with, to be held Cycle pumping installations is not arranged for device and refrigerating function, by axis residing for the first through hole of circle distribution on axle sleeve and the second through-hole The aperture difference at position is covered, centrifugation small impeller effect, then the helicla flute by being arranged between axle sleeve and the first rotating ring, shape are formed At the effect of helicoidal pump, the superposition of pumping effect twice constitutes the voluntarily cycle of buffer fluid.It is simple and reasonable, cooling effect Fruit is good, convenient to use, reduces cost.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
In Fig. 1,1 axle sleeve, 2 first stationary seats, 3 rotating seats, 4 second stationary seats, 5 shells, 6 media ends friction pair, 7 air End friction pair, 8 external seal chambers, 9 interior sealing chambers, 10 holding screws, 11 circular passages, 12 helicla flutes, 13 first through hole, 14 second Through-hole, 31 third through-holes, 51 outflow ports, 52 flow inlets, 61 first stationary rings, 62 first rotating rings, 71 second stationary rings, 72 second are moved Ring.
Specific implementation mode
The present invention is further explained in conjunction with attached drawing.
A kind of buffer fluid flowage structure of mechanical seal as shown in Figure 1, including axle sleeve 1 are sequentially provided on axle sleeve 1 First stationary seat 2, rotating seat 3, the second stationary seat 4,1 outer wall of axle sleeve be additionally provided with axle sleeve 1 socket cooperation shell 5, first Be provided on stationary seat 2 first stationary ring 61, be provided on rotating seat 3 with 61 matched first rotating ring 62 of the first stationary ring, second The second stationary ring 71 is provided on stationary seat 4, be provided on shell 5 with 71 matched second rotating ring 72 of the second stationary ring, first is quiet Ring 61 and the first rotating ring 62 cooperatively form media end friction pair 6, and the second stationary ring 71 and the second rotating ring 72 cooperatively form atmosphere end and rub Pair 7 is wiped, the first stationary seat 2 and the second stationary seat 4 are fixedly connected on axle sleeve 1, and rotating seat 3 is fixedly connected on shell 5;
Form external seal chamber 8 between second stationary seat 4, rotating seat 3, atmosphere end friction pair 7 and shell 5, axle sleeve 1 and axis it Between be formed with circular passage 11, form interior sealing chamber 9, the first rotating ring 62 and 1 phase of axle sleeve between media end friction pair 6 and axle sleeve 1 It is provided with the helicla flute 12 being connected to interior sealing chamber 9 to place, several circumferentially distributions are provided on axle sleeve 1 and is connected to circular passage 11 with the first through hole 13 of external seal chamber 8, be additionally provided on axle sleeve 1 it is several be circumferentially distributed and be connected to circular passage 11 with it is interior close The second through-hole 14 of chamber 9 is sealed, first through hole 13 is different with the outer diameter at 1 position of axle sleeve residing for the second through-hole 14.
The buffer fluid flowage structure of the present invention is only provided with container and refrigerating function, and cycle pumping installations is not arranged, according to The aperture difference at 1 position of axle sleeve residing for the first through hole 13 of circle distribution on axle sleeve 1 and the second through-hole 14 forms centrifugation leaflet Effect, then the helicla flute 12 by being arranged between axle sleeve 1 and the first rotating ring 62 are taken turns, the effect of helicoidal pump is formed, pumps twice The superposition of effect constitutes the voluntarily cycle of buffer fluid.
Buffer fluid is flowed into from external seal chamber 8, and buffer fluid flows into axis and axle sleeve by first through hole 13 from external seal chamber 8 Circular passage 11 between 1 ensure that the effective cooling and lubrication of atmosphere end friction pair 7 to keep external seal chamber 8 hydraulically full.
The buffer fluid flowed into from circular passage 11, via several second through-holes 14 on axle sleeve 1, in the effect of centrifugal force Under, it casts to 6 inside of media end friction pair, enhances cooling and lubricant effect.
The outflow port 51 of rotating seat 3 and shell 5, outflow port 51 and helicla flute 12 are provided through on rotating seat 3 and shell 5 Connection, the buffer fluid of interior sealing chamber 9 are flowed out from outflow port 51, have been taken away the heat that a large amount of frictions generate, have been made the temperature of seal chamber Degree remain at it is appropriate within the scope of.
It is provided with the flow inlet 52 being connected to external seal chamber 8 on shell 5, addition buffer fluid is facilitated by flow inlet 52.
It is additionally provided with connection external seal chamber 8 and the third through-hole 31 of first through hole 13 on rotating seat 3, keeps structure more whole Body.
Lead between first stationary seat 2 and axle sleeve 1, between the second stationary seat 4 and axle sleeve 1, between rotating seat 3 and shell 5 It crosses holding screw 10 to be fixedly connected, facilitates the installation and removal of each component.
Embodiment described above is not intended to restrict the invention, for those skilled in the art, the present invention's Equivalent replacement of some of the technical features within spirit and principle, should all be included in the protection scope of the present invention.

Claims (5)

1. a kind of buffer fluid flowage structure of mechanical seal, it is characterised in that:Including axle sleeve(1), axle sleeve(1)On be sequentially arranged There is the first stationary seat(2), rotating seat(3), the second stationary seat(4), axle sleeve(1)Outer wall is additionally provided with and axle sleeve(1)Socket cooperation Shell(5), the first stationary seat(2)On be provided with the first stationary ring(61), rotating seat(3)On be provided with and the first stationary ring(61)Phase First rotating ring of cooperation(62), the second stationary seat(4)On be provided with the second stationary ring(71), shell(5)On be provided with it is second quiet Ring(71)Matched second rotating ring(72), the first stationary ring(61)With the first rotating ring(62)It is secondary to cooperatively form media end friction(6), Second stationary ring(71)With the second rotating ring(72)It is secondary to cooperatively form atmosphere end friction(7), the first stationary seat(2)With the second stationary seat (4)It is fixedly connected on axle sleeve(1)On, rotating seat(3)It is fixedly connected on shell(5)On;
Second stationary seat(4), rotating seat(3), atmosphere end friction it is secondary(7)And shell(5)Between formed external seal chamber(8), axle sleeve (1)Circular passage is formed between axis(11), media end friction pair(6)With axle sleeve(1)Between formed interior sealing chamber(9), the One rotating ring(62)With axle sleeve(1)The place of offseting is provided with and interior sealing chamber(9)The helicla flute of connection(12), axle sleeve(1)On be provided with It is several to be circumferentially distributed and be connected to circular passage(11)With external seal chamber(8)First through hole(13), axle sleeve(1)On be additionally provided with It is several to be circumferentially distributed and be connected to circular passage(11)With interior sealing chamber(9)The second through-hole(14), first through hole(13)With Two through-holes(14)Residing axle sleeve(1)The outer diameter at position is different.
2. a kind of buffer fluid flowage structure of mechanical seal according to claim 1, it is characterised in that:Rotating seat(3) And shell(5)On be provided through rotating seat(3)And shell(5)Outflow port(51), outflow port(51)With helicla flute(12)Even It is logical.
3. a kind of buffer fluid flowage structure of mechanical seal according to claim 1, it is characterised in that:Shell(5)On It is provided with and external seal chamber(8)The flow inlet of connection(52).
4. a kind of buffer fluid flowage structure of mechanical seal according to claim 1, it is characterised in that:Rotating seat(3) On be additionally provided with connection external seal chamber(8)And first through hole(13)Third through-hole(31).
5. a kind of buffer fluid flowage structure of mechanical seal according to claim 1, it is characterised in that:First stationary seat (2)With axle sleeve(1)Between, the second stationary seat(4)With axle sleeve(1)Between, rotating seat(3)With shell(5)Between pass through tightening Screw(10)It is fixedly connected.
CN201710169476.1A 2017-03-21 2017-03-21 A kind of buffer fluid flowage structure of mechanical seal Active CN106763782B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710169476.1A CN106763782B (en) 2017-03-21 2017-03-21 A kind of buffer fluid flowage structure of mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710169476.1A CN106763782B (en) 2017-03-21 2017-03-21 A kind of buffer fluid flowage structure of mechanical seal

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CN106763782A CN106763782A (en) 2017-05-31
CN106763782B true CN106763782B (en) 2018-09-21

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107401616A (en) * 2017-07-28 2017-11-28 丹东克隆集团有限责任公司 Nuclear power low pressure safety injection pump mechanically-sealing apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6454268B1 (en) * 2001-02-09 2002-09-24 Eagle Industry Co., Ltd. Shaft seal device
CN203770645U (en) * 2014-01-06 2014-08-13 东莞市华汇精密机械有限公司 Two-end-surface mechanical seal device
JP6373604B2 (en) * 2014-02-27 2018-08-15 三菱重工業株式会社 Shaft seal device for underwater equipment and underwater equipment provided with the same
JP6383994B2 (en) * 2014-03-25 2018-09-05 株式会社タンケンシールセーコウ mechanical seal
CN205534220U (en) * 2016-03-09 2016-08-31 宁波安铱矢密封有限公司 Bi -polar face formula fixed water conservancy diversion convection current seal of getting ready

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