CN113090761B - High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system - Google Patents

High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system Download PDF

Info

Publication number
CN113090761B
CN113090761B CN202110422455.2A CN202110422455A CN113090761B CN 113090761 B CN113090761 B CN 113090761B CN 202110422455 A CN202110422455 A CN 202110422455A CN 113090761 B CN113090761 B CN 113090761B
Authority
CN
China
Prior art keywords
sealing
magnetic fluid
assembly
outer side
piston ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110422455.2A
Other languages
Chinese (zh)
Other versions
CN113090761A (en
Inventor
张�林
朱维兵
吴朝军
颜招强
王和顺
晏静江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongxiang Beite Technology Co ltd
Original Assignee
Xihua University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xihua University filed Critical Xihua University
Priority to CN202110422455.2A priority Critical patent/CN113090761B/en
Publication of CN113090761A publication Critical patent/CN113090761A/en
Application granted granted Critical
Publication of CN113090761B publication Critical patent/CN113090761B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
    • 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
    • F16J15/324—Arrangements for lubrication or cooling of the sealing itself
    • 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
    • F16J15/3268—Mounting of sealing rings
    • 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
    • F16J15/44—Free-space packings
    • F16J15/447—Labyrinth packings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

The invention relates to the technical field of magnetic fluid sealing, in particular to a high-pressure reciprocating type magnetic fluid sealing device with a collection and supplement system, which comprises a sealing shell, a reciprocating shaft arranged in the sealing shell in a sliding manner and a shaft sleeve fixedly sleeved on the outer side of the reciprocating shaft, wherein a primary sealing assembly, a guide lubricating assembly, a secondary sealing assembly, a plurality of pole shoe sealing assemblies and a tertiary sealing assembly are sleeved on the outer side of the shaft sleeve from right to left; and the side wall of the shaft sleeve is provided with a magnetic fluid channel and an oil injection channel, the magnetic fluid channel is communicated with the pole shoe sealing assembly, and the oil injection channel is communicated with the guide lubricating assembly. The invention designs a high-pressure reciprocating type magnetic fluid sealing device with a collecting and supplementing system.

Description

High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system
Technical Field
The invention relates to the technical field of magnetic fluid sealing, in particular to a high-pressure reciprocating type magnetic fluid sealing device with a collection and supplement system.
Background
At present, the main forms of the traditional reciprocating seal include hard filler seal, diaphragm seal, piston ring seal and bellows seal, and the sealing modes have great limitation because of large heat productivity, short service life and difficult complete seal, and the magnetic liquid seal is a novel sealing structure which has the characteristics of zero leakage, low friction and long service life. In order to solve the problems, the high-pressure reciprocating type magnetic fluid sealing device with the collecting and supplementing system is designed.
Disclosure of Invention
The invention aims to provide a high-pressure reciprocating type magnetic fluid sealing device with a collection supplementing system.
In order to achieve the purpose, the invention provides the following scheme:
a high-pressure reciprocating type magnetic fluid sealing device with a collecting and supplementing system comprises a sealing shell, a reciprocating shaft arranged in the sealing shell in a sliding mode and a shaft sleeve fixedly sleeved on the outer side of the reciprocating shaft, wherein a primary sealing assembly, a guide lubricating assembly, a secondary sealing assembly, a plurality of pole shoe sealing assemblies and a tertiary sealing assembly are sleeved on the outer side of the shaft sleeve from right to left, and the secondary sealing assembly is arranged between the primary sealing assembly and the guide lubricating assembly;
and a magnetic fluid channel and an oil injection channel are formed in the side wall of the shaft sleeve, the magnetic fluid channel is communicated with the pole shoe sealing assembly, and the oil injection channel is communicated with the guide lubricating assembly.
Preferably, the tertiary seal assembly comprises a stet ring seat sleeved on the outer side of the shaft sleeve, an O-shaped seal ring B is embedded in the inner side wall of the stet ring seat, a stet O ring A and a tetrafluoro step ring A are sequentially arranged on the outer side wall of the stet ring seat from inside to outside in a contact mode, the outer side of the tetrafluoro step ring A is in contact with the seal shell, and the inclined plane of the tetrafluoro step ring A is far away from the middle of the reciprocating shaft.
Preferably, the pole shoe sealing assembly comprises two pole shoes sleeved outside the shaft sleeve, the outer side walls of the pole shoes are provided with a plurality of pole teeth, a permanent magnet and a filler between the pole shoes are clamped between the two pole shoes, the permanent magnet is arranged in contact with the outer side wall of the shaft sleeve, the filler between the pole shoes is arranged in contact with the outer side wall of the permanent magnet, a gap is reserved between the filler between the pole shoes and the inner side wall of the sealing shell, an O-shaped sealing ring C is embedded in the inner wall of each pole shoe, and a filler between adjacent pole teeth is arranged;
a perforated piston ring seat is arranged on the left side of the pole shoe on the left side in a contact manner, one side, far away from the pole shoe, of the perforated piston ring seat is arranged in a contact manner with the adjacent pole shoe, the perforated piston ring seat on the leftmost side is in contact with the tertiary sealing assembly, a piston ring seat is arranged on the right side of the pole shoe on the rightmost side in a contact manner, the right side of the piston ring seat is arranged in a contact manner with the secondary sealing assembly, piston rings are clamped on the outer side walls of the perforated piston ring seat and the piston ring seat, and the perforated piston ring seat and the piston ring seat are fixedly sleeved on the outer side of the shaft sleeve;
the piston ring seat with the hole, the pole shoe and the sealing shell form a liquid storage cavity, and the magnetic fluid channel is communicated with the liquid storage cavity through the piston ring seat with the hole.
Preferably, second grade seal assembly is including cup jointing the stet circle series connection seat in the axle sleeve outside, stet circle series connection seat inside wall inlays and is equipped with O type sealing washer D, stet circle series connection seat outside wall from interior to exterior contacts in proper order and is equipped with two at least stet O circles B and two at least tetrafluoro ladder circle B, two tetrafluoro ladder circle B's inclined plane sets up relatively.
Preferably, the guide lubricating assembly comprises a bushing sleeved on the outer side of the shaft sleeve, a guide sleeve is fixedly sleeved on the outer side of the bushing, the outer side wall of the guide sleeve is in sliding fit with the sealing shell, a channel is radially formed in the bushing and the guide sleeve, and the oil injection channel is communicated with the channel.
Preferably, the primary seal assembly comprises a labyrinth seal sleeved on the outer side of the shaft sleeve, and the outer side wall of the labyrinth seal is in contact with the inner side wall of the seal shell.
Preferably, an O-shaped sealing ring A is embedded in the end portion of the inner side wall of the shaft sleeve, and the reciprocating shaft is in contact with the O-shaped sealing ring A.
Preferably, the end part of the sealing shell, which is located on the third-stage sealing assembly, is fixedly connected with a shell end cover, the shell end cover is fixedly connected with the sealing shell through an inner hexagonal socket head cap screw, and the reciprocating shaft penetrates through the sealing shell.
Preferably, the axle sleeve is located tertiary seal assembly's tip outside fixedly connected with location end cover, the location end cover through holding screw with axle sleeve fixed connection, the axle sleeve is kept away from tertiary seal assembly's tip fixedly connected with axle sleeve rand, the axle sleeve rand pass through holding screw with axle sleeve fixed connection.
The invention has the following technical effects:
the invention arranges a shaft sleeve outside a reciprocating shaft, the shaft sleeve is used for installing a magnetic fluid channel and an oil injection channel and protecting the reciprocating shaft, the magnetic fluid channel supplies supplement of magnetic fluid to a pole shoe sealing component, and the oil injection channel supplies lubrication for guiding the relative sliding of the lubricating component and a sealing shell.
The stet ring seat is used for restraining a tetrafluoro step ring A and a stet O ring, the tetrafluoro step ring A is sealed in a one-way mode, the function of increasing sealing pressure or preventing magnetic fluid leakage is achieved, meanwhile, the stet O ring provides radial elastic force for the tetrafluoro step ring A, the sealing effect of the tetrafluoro step ring A is improved, meanwhile, the stet O ring provides sealing force and expansion force, and compensation effect is achieved for consumption of the tetrafluoro step ring A.
The pole shoes are provided with pole teeth which can gather magnetic fields to form a magnetic loop, magnetic fluid is filled in gaps among the sealing shell, the fillers among the pole shoes and the pole shoes, the permanent magnet generates the magnetic fields and forms the magnetic loop, the magnetic fluid forms a liquid O-shaped sealing ring under the action of the magnetic fields to play a sealing effect, the fillers among the pole teeth of the fillers among the pole shoes are used for magnetic isolation, the magnetic fields are concentrated in the pole teeth, gaps among the flat pole teeth are filled, and the accumulation and waste of the magnetic fluid are avoided.
The reciprocating shaft drives the shaft sleeve to reciprocate in the axial reciprocating motion process, the shaft sleeve drives the piston ring seat with the hole and the piston ring seat to reciprocate, the piston ring seat with the hole and the piston ring seat are used for fixing the piston ring, residual magnetic fluid on the inner wall of the sealed shell is scraped by the piston ring during reciprocating motion of the piston ring, the magnetic fluid scraped by the piston ring is stored in the liquid storage cavity, excessive loss of the magnetic fluid is avoided, and the magnetic fluid channel is communicated with the liquid storage cavity through the piston ring seat with the hole and used for conveying supplementary magnetic fluid.
The stet ring series seat simultaneously restrains two sets of tetrafluoro step rings B and stet O ring B, the inclined planes of the two tetrafluoro step rings B are arranged oppositely, bidirectional sealing can be provided for fluid sealing in the device, sealing pressure is increased to prevent leakage of magnetic fluid, the stet O ring B provides sealing force and expansion force, and compensation effect is achieved on consumption of the tetrafluoro step rings B.
The magnetic fluid sealing device reduces the loss of the magnetic fluid in the using process through the cooperative sealing of the three-stage sealing assembly, the plurality of pole shoe sealing assemblies, the secondary sealing assembly, the guide lubricating assembly and the primary sealing assembly, and seals the magnetic fluid in the pole shoe sealing assemblies through the magnetic fluid channel so that the magnetic fluid is better sealed in the reciprocating motion of the whole device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a partial enlarged view of portion B of FIG. 1;
fig. 4 is a partially enlarged view of a portion C in fig. 1.
Reference numeral, 1, a housing end cap; 2. sealing the housing; 3. a coil base; 4. a tetrafluoro ladder ring A; 5. a pole shoe; 6. a magnetic fluid; 7. a magnetic fluid channel; 8. a permanent magnet; 9. a piston ring seat; 10. a stet ring series connection seat; 11. a guide sleeve; 12. a bushing; 13. labyrinth sealing; 14. a shaft sleeve; 15. a shaft sleeve collar; 16. tightening the screw; 17. a reciprocating shaft; 18. an O-shaped sealing ring A; 19. an O-shaped sealing ring B; 20. an oil injection channel; 21. a piston ring; 22. a piston ring seat with a hole; 23. an O-shaped sealing ring C; 24. filling materials among the pole teeth; 25. filling materials between the pole shoes; 26. a liquid storage cavity; 27. a Stirling O ring A; 28. positioning the end cover; 29. a socket head cap screw; 30. an O-shaped sealing ring D; 31. a Stirling O ring B; 32. and a tetrafluoro ladder ring B.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-4, the invention provides a high-pressure reciprocating magnetic fluid sealing device with a collection and supplement system, which comprises a sealing shell 2, a reciprocating shaft 17 arranged in the sealing shell 2 in a sliding manner, and a shaft sleeve 14 fixedly sleeved on the outer side of the reciprocating shaft 17, wherein a primary sealing assembly, a guide lubricating assembly, a secondary sealing assembly, a plurality of pole shoe sealing assemblies and a tertiary sealing assembly are sleeved on the outer side of the shaft sleeve 14 from right to left, and the secondary sealing assembly is arranged between the primary sealing assembly and the guide lubricating assembly;
a magnetic fluid channel 7 and an oil injection channel 20 are formed in the side wall of the shaft sleeve 14, the magnetic fluid channel 7 is communicated with the pole shoe sealing assembly, and the oil injection channel 20 is communicated with the guide lubricating assembly.
The invention arranges a shaft sleeve 14 at the outer side of a reciprocating shaft 17, the shaft sleeve 14 is used for installing a magnetic fluid channel 7 and an oil injection channel 20 and protecting the reciprocating shaft 17, the magnetic fluid channel 7 supplies magnetic fluid 6 for a pole shoe sealing component, and the oil injection channel 20 supplies lubrication for guiding the relative sliding of the lubricating component and a sealing shell 2.
Further optimize the scheme, tertiary seal assembly is including cup jointing the stet circle seat 3 in the axle sleeve 14 outside, and stet circle seat 3's inside wall inlays and is equipped with O type sealing washer B19, and stet circle seat 3 lateral wall contacts in proper order from inside to outside and is equipped with stet O circle A27, tetrafluoro ladder circle A4, and tetrafluoro ladder circle A4 outside contacts with seal housing 2, and the inclined plane of tetrafluoro ladder circle A4 is kept away from reciprocating shaft 17 middle part and is set up.
The stet ring seat 3 is used for restraining a tetrafluoro step ring A4 and a stet O ring A27, the tetrafluoro step ring A4 is sealed in a single direction, the function of increasing sealing pressure or preventing leakage of the magnetic fluid 6 is achieved, meanwhile, the stet O ring A27 provides radial elastic force for the tetrafluoro step ring A4, the sealing effect of the tetrafluoro step ring A4 is improved, meanwhile, the stet O ring A27 provides sealing force and expansion force, and compensation effect is achieved on consumption of the tetrafluoro step ring A4.
According to a further optimized scheme, the pole shoe sealing assembly comprises two pole shoes 5 sleeved on the outer side of the shaft sleeve 14, a plurality of pole teeth are arranged on the outer side walls of the pole shoes 5, a permanent magnet 8 and a pole shoe filler 25 are clamped between the two pole shoes 5, the permanent magnet 8 is arranged in contact with the outer side walls of the shaft sleeve 14, the pole shoe filler 25 is arranged in contact with the outer side walls of the permanent magnet 8, a gap is reserved between the pole shoe filler 25 and the inner side walls of the sealing shell 2, an O-shaped sealing ring C23 is embedded in the inner wall of each pole shoe 5, and a pole tooth filler 24 is arranged between adjacent pole teeth;
the pole shoes 5 are provided with pole teeth which can converge a magnetic field to form a magnetic loop, the magnetic fluid 6 is filled in a gap between the sealing shell 2 and the pole shoe filler 25, the pole shoes 5, the permanent magnet 8 generates a magnetic field and forms a magnetic loop, the magnetic fluid 6 forms a liquid O-shaped sealing ring under the action of the magnetic field to play a sealing effect, the pole shoe filler 25 and the pole tooth filler 24 are used for isolating magnetism, so that the magnetic field is concentrated on the pole teeth, gaps between the pole teeth are filled, and the magnetic fluid accumulation waste is avoided.
A perforated piston ring seat 22 is arranged on the left side of the left pole shoe 5 in a contact manner, one side, far away from the pole shoe 5, of the perforated piston ring seat 22 is arranged in a contact manner with the adjacent pole shoe 5, the perforated piston ring seat 22 on the leftmost side is in contact with a tertiary sealing assembly, a piston ring seat 9 is arranged on the right side of the pole shoe 5 on the rightmost side in a contact manner, the right side of the piston ring seat 9 is arranged in a contact manner with a secondary sealing assembly, a piston ring 21 is clamped on the outer side walls of the perforated piston ring seat 22 and the piston ring seat 9, and the perforated piston ring seat 22 and the piston ring seat 9 are fixedly sleeved on the outer side of a shaft sleeve 14;
the piston ring seat 22 with the hole, the pole shoe 5 and the sealing shell 2 form a liquid storage cavity 26, and the magnetic fluid channel 7 is communicated with the liquid storage cavity 26 through the piston ring seat 22 with the hole. The perforated piston ring seat 22 positioned at the leftmost side is contacted with the coil seat 3, and the right side of the piston ring seat 9 is contacted with the coil series seat 10.
The reciprocating shaft 17 drives the shaft sleeve 14 to reciprocate in the axial reciprocating motion process, the shaft sleeve 14 drives the piston ring seat 22 with the hole and the piston ring seat 9 to reciprocate, the piston ring seat 22 with the hole and the piston ring seat 9 are used for fixing a piston ring, the piston ring 21 scrapes residual magnetic fluid on the inner wall of the sealed shell 2 when the piston ring 21 reciprocates, the magnetic fluid 6 scraped by the piston ring 21 is stored in the liquid storage cavity 26, excessive loss of the magnetic fluid is avoided, and the magnetic fluid channel 7 is communicated with the liquid storage cavity 26 through the piston ring seat 22 with the hole and used for conveying and supplementing the magnetic fluid 6.
Further optimize the scheme, second grade seal assembly is including cup jointing the site circle series connection seat 10 in the axle sleeve 14 outside, and site circle series connection seat 10 inside wall inlays and is equipped with O type sealing washer D30, and site circle series connection seat 10 lateral wall contacts in proper order from interior to exterior and is equipped with two piece at least site O circle B31 and two at least tetrafluoro ladder circle B32, and the inclined plane of two tetrafluoro ladder circles B32 sets up relatively. The stet ring series connection seat 10 simultaneously restrains two sets of tetrafluoro step rings B32 and stet O ring B31, the inclined planes of the two tetrafluoro step rings B32 are arranged oppositely, bidirectional sealing can be provided for fluid sealing in the device, sealing pressure is increased to prevent leakage of the magnetic fluid 6, the stet O ring B31 provides sealing force and expansion force, and compensation effect is achieved on consumption of the tetrafluoro step ring B32.
Further optimization scheme, the lubricated subassembly of direction is including cup jointing bush 12 in the axle sleeve 14 outside, bush 12 outside is fixed to have cup jointed uide bushing 11, 11 lateral walls of uide bushing and 2 sliding fit of seal housing, bush 12, the radial passageway of having seted up of uide bushing 11, oiling passageway 20 and passageway intercommunication, 11 left and right sides of uide bushing and the tandem seat 10 contact of stet circle, oiling passageway 20 is used for the oil feed of 11 lateral walls of uide bushing, slide for uide bushing 11 and seal housing 2 provides lubrication, bush 12 is used for supporting uide bushing 11, uide bushing 11 plays to bear and the guide effect.
Further optimize the scheme, one-level seal assembly is including cup jointing the labyrinth seal 13 in the axle sleeve 14 outside, and labyrinth seal 13 lateral wall sets up with the contact of seal housing 2 inside wall. The stirling ring tandem seat 10 on the right side is in contact with the labyrinth seal 13, and the labyrinth seal 13 is arranged to assist sealing, so that the pressure of a sealing medium is reduced.
In a further optimized scheme, an O-shaped sealing ring A18 is embedded at the end part of the inner side wall of the shaft sleeve 14, and the reciprocating shaft 17 is arranged in contact with the O-shaped sealing ring A18.
Further optimize the scheme, the end fixedly connected with casing end cover 1 that seal housing 2 is located tertiary seal assembly, casing end cover 1 passes through hexagon socket head cap screw 29 and seal housing 2 fixed connection, and reciprocating shaft 17 passes seal housing 2 and sets up.
In a further optimized scheme, a positioning end cover 28 is fixedly connected to the outer side of the end portion, located on the tertiary sealing assembly, of the shaft sleeve 14, the positioning end cover 28 is fixedly connected with the shaft sleeve 14 through a set screw 16, a shaft sleeve collar 15 is fixedly connected to the end portion, far away from the tertiary sealing assembly, of the shaft sleeve 14, and the shaft sleeve collar 15 is fixedly connected with the shaft sleeve 14 through the set screw 16. Sleeve collar 15 is used to secure sleeve 14 and alignment end cap 28 secures sleeve 14 and aligns the parts on sleeve 14.
The sealing principle of the embodiment is as follows:
A. and (3) sealing: as shown in fig. 1, a sealing medium (not only oil, but also any fluid) of a mechanical device is sealed on the right side of a sealing shell 2 in fig. 1 through the device, a magnetic circuit is formed by a permanent magnet 8, a pole shoe 5 and the sealing shell 2 in the device, and a magnetic fluid 6 is converged between a pole tooth on the pole shoe 5 and the sealing shell 2 under the action of the magnetic circuit to form a liquid O-shaped sealing ring, so that the sealing effect is achieved. In order to improve the bearing capacity of the magnetic fluid sealing device, the invention adopts a multi-stage combined series sealing structure, and a labyrinth seal 13 is used in the first stage, so that the pressure of a sealing medium is greatly reduced; the second stage is sealed by a Starter ring series connection seat 10, so that the pressure of a sealing medium is further reduced, and the leakage of the magnetic fluid 6 breaking through a piston ring 21 is avoided; a plurality of pole shoes 5 are adopted on the second and sealing sides to form series magnetic fluid seal, so that sealing media are completely isolated, and the zero leakage effect is achieved; and a stet ring seat 3 is added for sealing in the third stage, so that the leakage of the magnetic fluid breaking through the piston ring is prevented and the dust is prevented. The oil filling passage 20 may fill the guide sleeve 11 with lubricating oil through the sleeve 14, so that the guide sleeve 11 operates in a low friction environment, thereby reducing the internal temperature.
B. The magnetic fluid collecting and supplementing system comprises: in the using process of the device, the reciprocating shaft 17 drives the pole shoes 5 to reciprocate, the magnetic fluid 6 is remained on the inner wall of the sealing shell 2 due to friction force, so that the magnetic fluid 6 is excessively consumed, the end part of each group of pole shoe sealing components is provided with the piston ring 21, the piston ring 21 is tightly attached to the inner wall of the sealing shell 2 by means of the elasticity of the piston ring 21, the magnetic fluid 6 adsorbed on the inner wall of the sealing shell 2 in the reciprocating motion process is scraped and stored in the liquid storage cavity 26, when the reciprocating shaft 17 reversely moves, the pole shoes 5 pass through the scraped liquid storage cavity 26 again, the magnetic fluid 6 returns to the pole teeth again under the action of a magnetic loop, the magnetic fluid 6 is supplemented to the liquid storage cavity 26 through the magnetic fluid channel 7 periodically, and the long-term stable operation of the whole system can be ensured.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (8)

1. The utility model provides a reciprocating type magnetic current body sealing device of high pressure of supplementary system is collected in area which characterized in that: the sealing device comprises a sealing shell (2), a reciprocating shaft (17) arranged in the sealing shell (2) in a sliding mode and a shaft sleeve (14) fixedly sleeved on the outer side of the reciprocating shaft (17), wherein a primary sealing assembly, a guide lubricating assembly, a secondary sealing assembly, a plurality of pole shoe sealing assemblies and a tertiary sealing assembly are sleeved on the outer side of the shaft sleeve (14) from right to left, and the secondary sealing assembly is arranged between the primary sealing assembly and the guide lubricating assembly;
a magnetic fluid channel (7) and an oil injection channel (20) are formed in the side wall of the shaft sleeve (14), the magnetic fluid channel (7) is communicated with the pole shoe sealing assembly, and the oil injection channel (20) is communicated with the guide lubricating assembly;
the pole shoe sealing assembly comprises two pole shoes (5) sleeved on the outer side of the shaft sleeve (14), a plurality of pole teeth are arranged on the outer side walls of the pole shoes (5), a permanent magnet (8) and a filler (25) between the pole shoes are clamped between the two pole shoes (5), the permanent magnet (8) is arranged in contact with the outer side walls of the shaft sleeve (14), the filler (25) between the pole shoes is arranged in contact with the outer side walls of the permanent magnet (8), a gap is reserved between the filler (25) between the pole shoes and the inner side wall of the sealing shell (2), an O-shaped sealing ring C (23) is embedded in the inner wall of each pole shoe (5), and a filler (24) between adjacent pole teeth is arranged;
a perforated piston ring seat (22) is arranged on the left side of the pole shoe (5) on the left side in a contact manner, one side, far away from the pole shoe (5), of the perforated piston ring seat (22) is arranged in a contact manner with the adjacent pole shoe (5), the perforated piston ring seat (22) on the leftmost side is in contact with the tertiary sealing assembly, a piston ring seat (9) is arranged on the right side of the pole shoe (5) on the rightmost side in a contact manner, the right side of the piston ring seat (9) is arranged in a contact manner with the secondary sealing assembly, piston rings (21) are clamped on the outer side walls of the perforated piston ring seat (22) and the piston ring seat (9), and the perforated piston ring seat (22) and the piston ring seat (9) are fixedly connected to the outer side of the shaft sleeve (14);
the piston ring seat (22) with the hole, the pole shoe (5) and the sealing shell (2) form a liquid storage cavity (26), and the magnetic fluid channel (7) is communicated with the liquid storage cavity (26) through the piston ring seat (22) with the hole.
2. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: tertiary seal assembly is including cup jointing stirling circle seat (3) in axle sleeve (14) outside, the inside wall of stirling circle seat (3) inlays and is equipped with O type sealing washer B (19), stirling circle seat (3) lateral wall from interior to exterior contacts in proper order and is equipped with stirling O circle A (27), tetrafluoro ladder circle A (4) the outside with seal housing (2) contact, the inclined plane of tetrafluoro ladder circle A (4) is kept away from reciprocating shaft (17) middle part sets up.
3. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: second grade seal assembly is including cup jointing the stet circle series connection seat (10) in axle sleeve (14) outside, stet circle series connection seat (10) inside wall inlays and is equipped with O type sealing washer D (30), stet circle series connection seat (10) lateral wall from interior to exterior contacts in proper order and is equipped with two at least stet O circle B (31) and two at least tetrafluoro ladder circle B (32), two stet O circle B (31) are followed reciprocating shaft (17) axial sets up side by side, tetrafluoro ladder circle B (32) correspond and set up stet O circle B (31) outside, two the inclined plane of tetrafluoro ladder circle B (32) sets up relatively.
4. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: the guide lubricating assembly comprises a bushing (12) sleeved on the outer side of a shaft sleeve (14), a guide sleeve (11) is fixedly sleeved on the outer side of the bushing (12), the outer side wall of the guide sleeve (11) is in sliding fit with the sealing shell (2), a channel is radially formed in the bushing (12) and the guide sleeve (11), and the oil injection channel (20) is communicated with the channel.
5. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: the primary sealing assembly comprises a labyrinth seal (13) sleeved on the outer side of the shaft sleeve (14), and the outer side wall of the labyrinth seal (13) is in contact with the inner side wall of the sealing shell (2).
6. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: an O-shaped sealing ring A (18) is embedded in the end portion of the inner side wall of the shaft sleeve (14), and the reciprocating shaft (17) is in contact with the O-shaped sealing ring A (18).
7. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: the end part of the sealing shell (2) located on the third-stage sealing assembly is fixedly connected with a shell end cover (1), the shell end cover (1) is fixedly connected with the sealing shell (2) through an inner hexagonal socket head cap screw (29), and the reciprocating shaft (17) penetrates through the sealing shell (2).
8. The high pressure reciprocating magnetic fluid seal device with collection and replenishment system of claim 1, wherein: axle sleeve (14) are located tertiary seal assembly's tip outside fixedly connected with location end cover (28), location end cover (28) through holding screw (16) with axle sleeve (14) fixed connection, axle sleeve (14) are kept away from tertiary seal assembly's tip fixedly connected with axle sleeve rand (15), axle sleeve rand (15) pass through holding screw (16) with axle sleeve (14) fixed connection.
CN202110422455.2A 2021-04-20 2021-04-20 High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system Active CN113090761B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110422455.2A CN113090761B (en) 2021-04-20 2021-04-20 High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110422455.2A CN113090761B (en) 2021-04-20 2021-04-20 High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system

Publications (2)

Publication Number Publication Date
CN113090761A CN113090761A (en) 2021-07-09
CN113090761B true CN113090761B (en) 2022-04-12

Family

ID=76678696

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110422455.2A Active CN113090761B (en) 2021-04-20 2021-04-20 High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system

Country Status (1)

Country Link
CN (1) CN113090761B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114854965A (en) * 2022-05-23 2022-08-05 西华大学 Vacuum high-temperature heat treatment device for sealing unidirectional stretching magnetic fluid

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2451821Y (en) * 2000-12-07 2001-10-03 华东理工大学 Superposed self-centring magnetic fluid dynamic sealing element
CN1384298A (en) * 2001-04-30 2002-12-11 罗喜梅 Magnetic fluid sealed transmission structure for reciprocating or rotating shaft
CN205918898U (en) * 2016-08-12 2017-02-01 山东泰开电器机构有限公司 Novel this special sealing element that seals of polydonita
CN207762249U (en) * 2017-06-26 2018-08-24 王艳华 Hydraulic cylinder cushion seal circle
CN110131419A (en) * 2019-05-30 2019-08-16 自贡兆强密封制品实业有限公司 A kind of reciprocating magnetic liquid combination sealing arrangement
CN110785588A (en) * 2017-07-18 2020-02-11 伊格尔工业股份有限公司 Shaft seal device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2451821Y (en) * 2000-12-07 2001-10-03 华东理工大学 Superposed self-centring magnetic fluid dynamic sealing element
CN1384298A (en) * 2001-04-30 2002-12-11 罗喜梅 Magnetic fluid sealed transmission structure for reciprocating or rotating shaft
CN205918898U (en) * 2016-08-12 2017-02-01 山东泰开电器机构有限公司 Novel this special sealing element that seals of polydonita
CN207762249U (en) * 2017-06-26 2018-08-24 王艳华 Hydraulic cylinder cushion seal circle
CN110785588A (en) * 2017-07-18 2020-02-11 伊格尔工业股份有限公司 Shaft seal device
CN110131419A (en) * 2019-05-30 2019-08-16 自贡兆强密封制品实业有限公司 A kind of reciprocating magnetic liquid combination sealing arrangement

Also Published As

Publication number Publication date
CN113090761A (en) 2021-07-09

Similar Documents

Publication Publication Date Title
CN113090761B (en) High-pressure reciprocating type magnetic fluid sealing device with collecting and supplementing system
CN108869754A (en) A kind of leakproof magnetic-type magnetic fluid sealing structure
CN2911342Y (en) Integrally packed mechanical sealing means
CN102536883A (en) Structure of agricultural water pump
CN202401247U (en) Connection structure driven by sewing machine spindle
CN203360806U (en) Spindle lubricating mechanism of straight buttonholing machine
CN214197245U (en) Sealing device for hydraulic pump
CN214578365U (en) Bearing structure and pump with oil supplementing function
CN112648374B (en) Soft packing sealing device
CN202201077U (en) Supporting wheel
CN110219826B (en) Integrated shaft seal for mine water pump
CN210050093U (en) Automobile water pump shaft connecting bearing and automobile water pump
CN209781457U (en) Isolator bearing
CN211117180U (en) Motor bearing gland structure
CN103322068A (en) Special bearing for rotor spinner
CN2032658U (en) Sealing device for reciprocating motion shaft
CN213808505U (en) Oil storage type oil-retaining bearing
CN219795857U (en) Novel linear bearing assembly
CN212079931U (en) Rolling bearing
CN217583180U (en) Novel oil seal mechanical seal device
CN202719136U (en) Motor bearing sealing sleeve
CN205618669U (en) Flexible oil blanket structure
CN203395034U (en) Special bearing for steam flow spinner
CN216741968U (en) Oil-free pump and cleaning machine with same
CN213870327U (en) Vertical pipeline multistage fire pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20230515

Address after: Room 1011, 4 / F, building 5, No. 299, Hangfu Road, Chongfu Town, Tongxiang City, Jiaxing City, Zhejiang Province

Patentee after: Tongxiang Beite Technology Co.,Ltd.

Address before: 610039, No. 999, Jin Zhou road, Jinniu District, Sichuan, Chengdu

Patentee before: XIHUA University

TR01 Transfer of patent right