[go: up one dir, main page]

CN112727922B - A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance - Google Patents

A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance Download PDF

Info

Publication number
CN112727922B
CN112727922B CN202011548638.0A CN202011548638A CN112727922B CN 112727922 B CN112727922 B CN 112727922B CN 202011548638 A CN202011548638 A CN 202011548638A CN 112727922 B CN112727922 B CN 112727922B
Authority
CN
China
Prior art keywords
magnetic
bionic
suspension bearing
bearing
hydrophobic material
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
CN202011548638.0A
Other languages
Chinese (zh)
Other versions
CN112727922A (en
Inventor
陈丽缓
刘子鹏
赵建华
蔡毅
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.)
North China Institute of Aerospace Engineering
Original Assignee
North China Institute of Aerospace Engineering
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 North China Institute of Aerospace Engineering filed Critical North China Institute of Aerospace Engineering
Priority to CN202011548638.0A priority Critical patent/CN112727922B/en
Publication of CN112727922A publication Critical patent/CN112727922A/en
Application granted granted Critical
Publication of CN112727922B publication Critical patent/CN112727922B/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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F16C32/0468—Details of the magnetic circuit of moving parts of the magnetic circuit, e.g. of the rotor
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The invention provides a magnetic-liquid double-suspension bearing coating processing method for reducing friction loss and improving static pressure bearing performance, wherein a magnetic-liquid double-suspension bearing stator comprises 8 magnetic poles, the surfaces of a bearing cavity and a bionic magnetic conductive sleeve are provided with processing bionic textures, the bottom of each magnetic pole is provided with the bearing cavity, the outer edge of each bearing cavity is plated with a hydrophilic material, and the inner part of the bearing cavity is plated with a hydrophobic material; similarly, the edge of the bionic magnetic conductive sleeve of the magnetic-liquid double-suspension bearing is plated with a hydrophilic material, and the interior of the bionic magnetic conductive sleeve is plated with a hydrophobic material; the hydrophilic material has strong adsorption capacity, the water molecules of the fluid flowing through the hydrophilic material part are attracted so as to increase the resistance, the hydrophobic material has strong repulsion, the water molecules of the fluid flowing through the hydrophobic material part are repelled so as to reduce the resistance and accelerate the flow, the hydrophilic surface can be more wetted through the coating treatment, the friction loss is reduced when the stator and the magnetic conductive sleeve have rubbing faults, and the static pressure supporting force of the magnetic-liquid double-suspension bearing static pressure supporting system can be improved by the hydrophilicity of the hydrophilic material and the repulsion of the hydrophobic material. Therefore, the coating treatment method can improve the friction performance and the supporting performance of the magnetic-liquid double-suspension bearing.

Description

一种降低摩擦损耗和提高静压支承性能的磁液双悬浮轴承涂 层处理方法A magnetic fluid double-suspension bearing coating for reducing friction loss and improving static pressure bearing performance layer processing method

技术领域technical field

本发明涉及磁液双悬浮轴承的设计领域，尤其涉及静压支承。The invention relates to the design field of a magnetic fluid double suspension bearing, in particular to a static pressure support.

背景技术Background technique

磁液双悬浮轴承采用电磁力和静压支承力双重支承，是一种新型的非机械接触的轴承，具有无摩擦、无磨损、承载能力大、运动精度高、使用寿命长等优点。因此得到普遍重视和广泛应用。现有的磁液双悬浮轴承并未对支承腔的仿生织构表面和仿生导磁套表面进行涂层处理，本发明分别为每个支承腔边框处镀亲水材料，对支承腔内部镀疏水材料；同理为仿生导磁套边缘部位镀亲水材料，仿生导磁套内部镀疏水材料，通过上述涂层处理，可以提高磁液双悬浮轴承静压支承系统的摩擦性能和静压支承性能。The magnetic fluid double suspension bearing is supported by electromagnetic force and static pressure support force. It is a new type of non-mechanical contact bearing. It has the advantages of no friction, no wear, large bearing capacity, high motion precision and long service life. Therefore, it has been widely valued and widely used. The existing magnetic fluid double suspension bearing does not coat the surface of the bionic texture of the support cavity and the surface of the bionic magnetic sleeve. The present invention coats the frame of each support cavity with a hydrophilic material and coats the inside of the support cavity with hydrophobic Materials; in the same way, the edge of the bionic magnetic sleeve is coated with hydrophilic materials, and the inside of the bionic magnetic sleeve is coated with hydrophobic materials. Through the above coating treatment, the friction performance and static pressure support performance of the static pressure support system of the magnetic fluid double suspension bearing can be improved. .

发明内容Contents of the invention

本发明要解决的技术问题是降低磁液双悬浮轴承静压支承系统的发生碰摩时的摩擦损耗和提高静压支承性能。The technical problem to be solved by the invention is to reduce the friction loss of the static pressure support system of the magnetic fluid double suspension bearing when rubbing occurs and to improve the performance of the static pressure support.

为解决上述技术问题，本发明提出了—种降低摩擦损耗和提高静压支承性能的磁液双悬浮轴承涂层处理方法，该方法分别为每个支承腔底部边框处镀亲水材料，对支承腔内部镀疏水材料；同理为仿生导磁套与支承腔边框相配合部位镀亲水材料，仿生导磁套内部镀疏水材料；流体流经亲水材料表面，水分子将会被吸引，从而增加流体阻力，流体流经疏水材料表面，水分子会被排斥，减少了流体阻力，通过上述涂层处理，可以使亲水表面变得更加湿润，当定子和导磁套发生碰摩故障时降低摩擦损耗，并且亲水材料的亲水性和疏水材料的排斥性可以提高磁液双悬浮轴承静压支承系统的静压支承力。In order to solve the above-mentioned technical problems, the present invention proposes a coating treatment method for magnetic fluid double-suspension bearings that reduces friction loss and improves static pressure support performance. The interior of the cavity is coated with hydrophobic material; similarly, the matching part of the bionic magnetic sleeve and the frame of the supporting cavity is coated with hydrophilic material, and the inside of the bionic magnetic sleeve is coated with hydrophobic material; when the fluid flows through the surface of the hydrophilic material, water molecules will be attracted, thereby Increase the fluid resistance, when the fluid flows through the surface of the hydrophobic material, the water molecules will be repelled, which reduces the fluid resistance. Through the above-mentioned coating treatment, the hydrophilic surface can be made more wet, and the friction failure of the stator and the magnetic sleeve will be reduced. Friction loss, and the hydrophilicity of the hydrophilic material and the repulsion of the hydrophobic material can improve the static pressure support force of the static pressure support system of the magnetic fluid double suspension bearing.

所述磁液双悬浮轴承支承腔底部边框处进行镀亲水材料处理，对支承腔内部进行镀疏水材料处理；The bottom frame of the support cavity of the magnetic fluid double suspension bearing is treated with a hydrophilic material plating, and the inside of the support cavity is treated with a hydrophobic material;

所述仿生导磁套外边缘镀亲水材料，仿生导磁套内部进行镀疏水材料处理；The outer edge of the bionic magnetic sleeve is coated with a hydrophilic material, and the inside of the bionic magnetic sleeve is treated with a hydrophobic material;

附图说明Description of drawings

图1是本发明实施例中的磁液双悬浮轴承系统简图；Fig. 1 is a schematic diagram of a magnetic fluid double suspension bearing system in an embodiment of the present invention;

图2是本发明实施例中的磁液双悬浮轴承定子支承腔涂层部位视图；Fig. 2 is a view of the coating part of the stator support cavity of the magnetic fluid double suspension bearing in the embodiment of the present invention;

图3是本发明实施例中的仿生导磁套涂层部位视图；Fig. 3 is a view of the coating part of the bionic magnetic sleeve in the embodiment of the present invention;

图中：In the picture:

1-磁极/支承腔，2-仿生导磁套，3-磁液双悬浮轴承定子，4-涂层，5-进液孔， 6-亲水材料涂层，7-疏水材料涂层，8-仿生凹坑，9-疏水材料涂层。10-亲水材料涂层。1-Magnetic pole/support cavity, 2-Bionic magnetic sleeve, 3-Magnetic fluid double suspension bearing stator, 4-Coating, 5-Inlet hole, 6-Hydrophilic material coating, 7-Hydrophobic material coating, 8 - Bionic dimples, 9- Hydrophobic material coating. 10 - Hydrophilic material coating.

具体实施方式Detailed ways

以下，参照附图对本发明的实施方式进行说明。Hereinafter, embodiments of the present invention will be described with reference to the drawings.

如图1所示，本发明提出的—种降低摩擦损耗和提高静压支承性能的磁液双悬浮轴承涂层处理方法：As shown in Figure 1, the present invention proposes a coating treatment method for magnetic fluid double-suspension bearings that reduces friction loss and improves static pressure support performance:

1、每个支承腔底部边框处镀亲水材料，对支承腔内部镀疏水材料；1. The bottom frame of each support cavity is coated with hydrophilic material, and the inside of the support cavity is coated with hydrophobic material;

2、仿生导磁套与磁极相配合部位镀亲水材料，其他部位镀疏水材料。2. The parts matching the bionic magnetic sleeve and the magnetic poles are coated with hydrophilic materials, and other parts are coated with hydrophobic materials.

如图2所示，磁液双悬浮轴承定子不同涂层的具体实施部位，区域7为亲水材料，区域8为疏水材料。As shown in Figure 2, the specific implementation parts of different coatings for the stator of the magnetic fluid double suspension bearing, the area 7 is a hydrophilic material, and the area 8 is a hydrophobic material.

如图3所示，仿生导磁套不同涂层的具体实施部位区域7为亲水材料，区域8 为疏水材料。As shown in FIG. 3 , the area 7 of the specific implementation site of different coatings of the bionic magnetic conductive sleeve is made of hydrophilic material, and the area 8 is made of hydrophobic material.

流体流经亲水材料表面，水分子将会被吸引，从而增加流体阻力，流体流经疏水材料表面，水分子会被排斥，减少了流体阻力，经过涂层处理增大了支承腔及仿生导磁套间隙间的阻力，提高了亲水区域摩擦表面的湿润程度。当定子和导磁套发生碰摩故障时降低摩擦损耗，并且亲水材料的亲水性和疏水材料的排斥性可以提高磁液双悬浮轴承静压支承系统的静压支承力。从而提高磁液双悬浮轴承静压支承系统的摩擦性能和静压支承性能。When the fluid flows through the surface of the hydrophilic material, the water molecules will be attracted, thereby increasing the fluid resistance. When the fluid flows through the surface of the hydrophobic material, the water molecules will be repelled, which reduces the fluid resistance. The resistance between the gaps of the magnetic sleeve improves the wetting degree of the friction surface in the hydrophilic area. The friction loss is reduced when the stator and the magnetic sleeve have a rubbing failure, and the hydrophilicity of the hydrophilic material and the repellency of the hydrophobic material can improve the static pressure support force of the static pressure support system of the magnetic fluid double suspension bearing. Therefore, the friction performance and the static pressure support performance of the static pressure support system of the magnetic fluid double suspension bearing are improved.

Claims (1)

1.一种降低摩擦损耗和提高静压支承性能的磁液双悬浮轴承涂层处理方法，具有磁液双悬浮轴承定子(3)，其内部包括8个磁极，所述磁极中间开有进液孔(5)，每个磁极底部均加工有支撑腔，组成了磁极/支撑腔结构，磁液双悬浮轴承定子(3)内圈为仿生导磁套(2)，所述仿生导磁套(2)的表面设置有仿生凹坑(8)，仿生导磁套(2)与支撑腔相互配合，所述支撑腔对仿生导磁套(2)起到支撑作用，其特征在于：为每个支承腔底部边框处镀亲水材料，对支承腔内部边框镀疏水材料；同理为仿生导磁套边缘部位镀亲水材料，仿生导磁套边缘内部镀疏水材料。1. A magnetic fluid double suspension bearing coating treatment method that reduces friction loss and improves static pressure bearing performance, has a magnetic fluid double suspension bearing stator (3), and includes 8 magnetic poles inside, and a liquid inlet is opened in the middle of the magnetic poles hole (5), each magnetic pole bottom is processed with a supporting cavity, forming a magnetic pole/supporting cavity structure, the inner ring of the magnetic fluid double suspension bearing stator (3) is a bionic magnetic permeable sleeve (2), and the bionic magnetic permeable sleeve ( 2) is provided with bionic pits (8) on the surface, and the bionic magnetic sleeve (2) cooperates with the support cavity, and the support cavity supports the bionic magnetic sleeve (2). It is characterized in that: for each The bottom frame of the support cavity is coated with hydrophilic material, and the internal frame of the support cavity is coated with hydrophobic material; similarly, the edge of the bionic magnetic sleeve is coated with hydrophilic material, and the inside of the edge of the bionic magnetic sleeve is coated with hydrophobic material.
CN202011548638.0A 2020-12-24 2020-12-24 A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance Active CN112727922B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011548638.0A CN112727922B (en) 2020-12-24 2020-12-24 A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011548638.0A CN112727922B (en) 2020-12-24 2020-12-24 A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance

Publications (2)

Publication Number Publication Date
CN112727922A CN112727922A (en) 2021-04-30
CN112727922B true CN112727922B (en) 2022-11-08

Family

ID=75605314

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011548638.0A Active CN112727922B (en) 2020-12-24 2020-12-24 A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance

Country Status (1)

Country Link
CN (1) CN112727922B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1474017A (en) * 1974-05-16 1977-05-18 Searle & Co Support member for carrying aqueous material
JPH02256914A (en) * 1989-03-29 1990-10-17 Agency Of Ind Science & Technol Gas bearing with superconducting magnet bearing
JPH06335199A (en) * 1993-05-25 1994-12-02 Nippon Koei Co Ltd Hydraulic turbine generator
US5789837A (en) * 1996-08-14 1998-08-04 Korea Advanced Institute Of Science & Technology High-temperature superconducting magnetic bearing
CN101117606A (en) * 2006-03-28 2008-02-06 中国矿业大学 Preparation of Hydrophobic Magnetic Grease for Hydrophobic Magnetic Lubricated Bearings
CN103270322A (en) * 2010-12-24 2013-08-28 奥尔特维恩有限责任公司 Fastener
CN104632893A (en) * 2014-12-25 2015-05-20 江南大学 Porous hydrostatic pressure bearing structure based on hydrophobic interfaces
CN111237338A (en) * 2020-01-14 2020-06-05 燕山大学 A single-degree-of-freedom magnetic-hydraulic double-suspended bearing control system and method
CN111927884A (en) * 2020-08-11 2020-11-13 燕山大学 Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2801219B2 (en) * 1988-10-05 1998-09-21 光洋精工株式会社 Hydrodynamic bearing
JPH11108051A (en) * 1997-10-07 1999-04-20 Sankyo Seiki Mfg Co Ltd Dynamic pressure bearing device and its manufacture
US20060108287A1 (en) * 2004-09-21 2006-05-25 Arnold Todd E Discrete zoned microporous nylon coated glass platform for use in microwell plates and methods of making and using same
CN100441891C (en) * 2006-11-02 2008-12-10 刘新广 Permanent magnet and turbo compound bearing
US20130032316A1 (en) * 2011-08-05 2013-02-07 Rajeev Dhiman Liquid-Impregnated Surfaces, Methods of Making, and Devices Incorporating the Same
US10100414B2 (en) * 2012-01-30 2018-10-16 General Electric Company Surface modified magnetic material
CN108869540B (en) * 2018-01-12 2024-06-25 刘慕华 Thrust bearing, rotor system and control method of thrust bearing
KR102048574B1 (en) * 2018-08-23 2020-01-22 엘지전자 주식회사 Motor and Manufacturing method of the same
CN110030265B (en) * 2019-05-15 2020-08-18 燕山大学 A single-degree-of-freedom magnetic-hydraulic double-suspended bearing control device and method
CN111288081B (en) * 2019-12-11 2022-03-11 燕山大学 A single-degree-of-freedom magnetic-hydraulic double-suspended bearing control system
CN111692209B (en) * 2020-05-25 2021-06-15 南京航空航天大学 Magnetic fluid controllable support micro-platform based on extreme wet interface and fabrication method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1474017A (en) * 1974-05-16 1977-05-18 Searle & Co Support member for carrying aqueous material
JPH02256914A (en) * 1989-03-29 1990-10-17 Agency Of Ind Science & Technol Gas bearing with superconducting magnet bearing
JPH06335199A (en) * 1993-05-25 1994-12-02 Nippon Koei Co Ltd Hydraulic turbine generator
US5789837A (en) * 1996-08-14 1998-08-04 Korea Advanced Institute Of Science & Technology High-temperature superconducting magnetic bearing
CN101117606A (en) * 2006-03-28 2008-02-06 中国矿业大学 Preparation of Hydrophobic Magnetic Grease for Hydrophobic Magnetic Lubricated Bearings
CN103270322A (en) * 2010-12-24 2013-08-28 奥尔特维恩有限责任公司 Fastener
CN104632893A (en) * 2014-12-25 2015-05-20 江南大学 Porous hydrostatic pressure bearing structure based on hydrophobic interfaces
CN111237338A (en) * 2020-01-14 2020-06-05 燕山大学 A single-degree-of-freedom magnetic-hydraulic double-suspended bearing control system and method
CN111927884A (en) * 2020-08-11 2020-11-13 燕山大学 Magnetic-liquid double-suspension bearing magnetic sleeve with bionic non-smooth surface and oil through hole

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
疏水表面及其减阻研究;蒋雄等;《化学进展》;20080424(第04期);全文 *
膜态沸腾阶段球体入水空泡及流体动力特性;李佳川等;《兵工学报》;20180815(第08期);全文 *

Also Published As

Publication number Publication date
CN112727922A (en) 2021-04-30

Similar Documents

Publication Publication Date Title
Handschuh-Wang et al. Surface tension of the oxide skin of gallium-based liquid metals
US6149160A (en) Mechanical seals enhanced with microstructures
CN111058221A (en) A steam generator assembly and washing machine
CN112727922B (en) A kind of coating treatment method of magnetic-hydraulic double suspension bearing to reduce friction loss and improve hydrostatic bearing performance
CN104632893A (en) Porous hydrostatic pressure bearing structure based on hydrophobic interfaces
CN105169504B (en) Magnetic fluid coupling type passive suspension axial-flow blood pump
US20030124007A1 (en) Rotary pump comprising a hydraulically mounted rotor
WO2018212657A1 (en) Lubricated sliding bearing with adjustment of the properties of the lubricant in certain parts of the bearing gap
CN107165937A (en) A kind of journal bearing of the dual supporting of electromagnetism static pressure
CN108547869B (en) A kind of magnetic liquid dual suspension bearing support system
CN215487686U (en) Friction-free ultra-clean magnetic suspension valve
CN113048150B (en) Large load-bearing magnetic fluid double floating radial bearing with magnetic gradient and array arrangement
CN113236795A (en) Friction-free ultra-clean magnetic suspension valve
CN100441891C (en) Permanent magnet and turbo compound bearing
JP3625657B2 (en) Liquid feed line pump
CN105333004B (en) A kind of ultrasonic gas hydrodynamic bearing
CN110397741A (en) A kind of shaft end mechanically-sealing apparatus
CN111927884B (en) Magnetic-Hydraulic Double Suspension Bearing Magnetic Sleeve with Biomimetic Non-smooth Surface and Oil Through Holes
CN107237820A (en) A kind of passive journal bearing of dual suspension of electromagnetism hydrostatic
CN208397305U (en) A kind of mechanical seal for pump
CN102084144B (en) Rolling bearing for underwater applications
CN114251365A (en) Method for improving bearing wear resistance of friction surface of bionic water-lubricated bearing
JP2003013957A (en) Pivot bearing for HDD using magnetic fluid
CN108331837A (en) A kind of magnetorheological fluid hydrostatic support bearing
JP2002195260A (en) Magnetic fluid motor

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