CN110094523A - A kind of magnetic fluid valve - Google Patents

A kind of magnetic fluid valve Download PDF

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Publication number
CN110094523A
CN110094523A CN201910427422.XA CN201910427422A CN110094523A CN 110094523 A CN110094523 A CN 110094523A CN 201910427422 A CN201910427422 A CN 201910427422A CN 110094523 A CN110094523 A CN 110094523A
Authority
CN
China
Prior art keywords
magnetic
fluid
valve body
plug
coil
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
Application number
CN201910427422.XA
Other languages
Chinese (zh)
Inventor
王正洪
严柏平
杨撞
周繁华
方许波
王寿灵
王正龙
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.)
Hangzhou Waring Mechanical And Electrical Co Ltd
Original Assignee
Hangzhou Waring Mechanical And Electrical Co Ltd
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 Hangzhou Waring Mechanical And Electrical Co Ltd filed Critical Hangzhou Waring Mechanical And Electrical Co Ltd
Priority to CN201910427422.XA priority Critical patent/CN110094523A/en
Publication of CN110094523A publication Critical patent/CN110094523A/en
Pending legal-status Critical Current

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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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention discloses a kind of magnetic fluid valves, magnetic fluid valve includes upper valve body, lower valve body, upper end cover and lower cover, there is fluid feeding cavity between upper valve body and upper end cover, there is driving chamber between lower valve body and lower cover, there is seal chamber in the bottom end of upper valve body, there is fluid cavity in the upper end of lower valve body, the bottom end of plug is embedded on magnetic inductive block, seal chamber is disposed with encapsulated coil from outside to inside, magnetic current body cavity and circular ring-shaped permanent-magnet body, driving chamber is disposed with magnet exciting coil and magnetic inductive block from outside to inside, there are upper air gap and lower air gap respectively in the upper and lower surfaces of magnetic inductive block, upper end cover center is provided with fluid inlet through-hole, the upper surface of lower cover is provided with groove, circular permanent magnet is placed in groove, the right side of lower valve body is provided with the outlet slot that fluid flows out from fluid cavity position, apparatus of the present invention are compact-sized, to the machining accuracy demand of sealing element Low, sealing effect is good, has preferable application value in the Seal Design of big pressure atmosphere lower valve door.

Description

A kind of magnetic fluid valve
Technical field
The present invention relates to a kind of valve fields, more particularly to a kind of magnetic fluid valve.
Background technique
Valving is a kind of base components being widely used in industrial application, as gas trap, liquid valve, fast valve, Exact flow rate valve, injection valve etc. are seen everywhere in our daily life.Currently, in addition to considering the optimization to valve performance It outside, is also hot issue that current scholars study to the fail-safe analysis of valving, this problem is filled in big pressure valve It is particularly evident to set middle embodiment.
For big pressure liquid valve, harsh demand is proposed to the leakproofness of valving.In order to preferable Meet this demand, we can only meet the above demand by the way that the machining high-precision to sealing element is continuously improved.But mistake High machining accuracy will bring huge processing cost, while high precision pursuit is also unfavorable for producing and processing on a large scale.
Aiming at the problem that existing valve body structure leakproofness is to machining requirements for high precision, the present invention proposes that one kind is suitable for High reliability magnetic fluid valve body structure under big pressure atmosphere.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of magnetic fluid valve.
A kind of magnetic fluid valve, including upper valve body, lower valve body, upper end cover and lower cover, wherein between upper valve body and upper end cover There is fluid feeding cavity, there is driving chamber between lower valve body and lower cover, has seal chamber in the bottom end of upper valve body, have in the upper end of lower valve body Fluid cavity, the plug of inverted cone connecting rod shape sequentially pass through fluid feeding cavity, seal chamber, fluid cavity and driving chamber, bottom end edge On magnetic inductive block, it is intracavitary that seal chamber is disposed with encapsulated coil, magnetic current body cavity and circular ring-shaped permanent-magnet body, magnetic fluid from outside to inside Filled with magnetic fluid, driving chamber is disposed with magnet exciting coil and magnetic inductive block from outside to inside, upper surface and following table in magnetic inductive block There are upper air gap and lower air gap in face respectively, and upper end cover center is provided with fluid inlet through-hole, and the upper surface of lower cover is provided with groove, groove In be placed with circular permanent magnet, the right side of lower valve body is provided with the outlet slot that fluid flows out from fluid cavity position.
Preferably, the material of upper valve body, lower valve body, upper end cover, lower cover, plug, magnetic inductive block is high magnetic conduction steel, magnetic The material of fluid cavity is elastomeric rubber membrane, and magnetic fluid the selection of material is MRFDG, and circular ring-shaped permanent-magnet body selects ferromagnetic ferro-aluminum Boron permanent magnet, circular permanent magnet are selected magnetic slightly weak ferrite permanent magnet, are cooperated between upper valve body and plug using conical surface seal, Also cooperated using conical surface seal between magnetic current body cavity and plug, there is the annulus fluid channel of a 3-5mm between annular permanent magnet and plug.
Preferably, upper air gap with a thickness of 1-3mm, lower air gap with a thickness of 3-10mm, upper air gap and lower air gap thickness Design specification it is as follows, according to the switch motion demand of the pressure of fluid inlet and plug, the thickness of air gap in selection, according to leading Magnetic patch electromagnetic force suffered under magnet exciting coil and circular permanent magnet effect respectively, chooses the thickness of lower air gap, the thickness of lower air gap Degree, which is chosen, need to ensure that magnetic inductive block can move upwards under magnet exciting coil energization action.
Preferably, magnet exciting coil and encapsulated coil are all made of the power supply mode of phase step type, and magnet exciting coil and seal line Circle is using power supply mode of interlocking, and when valve body is closed, magnet exciting coil is powered off and encapsulated coil is powered, when valve body is opened, excitation Coil is powered and encapsulated coil powers off, and encapsulated coil is powered, the actuation time of power-off lags behind magnet exciting coil power-off, it is dynamic to be powered Make the 0.5s of time.
Preferably, when the magnet exciting coil powers off, using two-stage sealing structure, wherein used between upper valve body and plug The mechanical system of the spherical conical surface is sealed, and on this basis, spherical cone match, and magnetic is also used between magnetic current body cavity and plug For magnetic fluid in fluid cavity under the action of encapsulated coil, mechanical strength increases the secondary seal effect, it can be achieved that plug, with Ensure reliably to seal, to weaken the challenging needs in machining to machining accuracy.
Preferably, the working method of device is as follows: when magnet exciting coil powers off, magnetic inductive block is inhaled in the electromagnetism of circular permanent magnet Under power effect, plug is driven to be in bottom most position, at this point, upper valve body and plug end face are in mechanical seal state, while close It seals coil to be powered, magnetic fluid carries out secondary close between upper valve body and plug end face under the action of magnetic field produced by encapsulated coil Envelope, annular permanent magnet will provide a proceeding magnetic field for the secondary seal of magnetic fluid, to guarantee the mechanical strength of magnetic fluid, when encouraging When magnetic coil is switched to energized state by endpoint status, magnetic inductive block moves upwards under magnetic fields caused by magnet exciting coil, Plug is driven to move upwards simultaneously, so that upper valve body and the separation of plug end face, after the 0.5s that magnet exciting coil is powered, encapsulated coil Power-off, magnetic fluid restore liquid condition, depressurization effect；When magnet exciting coil powers off again, magnetic inductive block is in circular permanent magnet Electromagnetic attraction effect under move downward, upper valve body and plug end face closure, magnet exciting coil power-off 0.5s after, encapsulated coil It is powered, magnetic fluid carries out secondary seal.So the magnetic fluid valve that this patent is proposed can preferably carry out valving Sealing can be relieved sealing element to high-precision demand is machined, have preferable engineering application value
The present invention has the advantages that compared with prior art
1) magnetic fluid valve proposed by the invention can be used cooperatively with existing valving, be filled in existing valve On the basis of setting, magnetic fluid structure and corresponding encapsulated coil is added, can complete the secondary seal that existing valve is decorated or Supplement sealing.Valve sealing structure proposed by the invention can be applied in existing valving.
2) magnetic fluid valve of the invention can effectively make magnetic fluid nature switch operating state, when valve means are closed When, magnetic fluid carries out supplement sealing, and when valve means are opened, device can preferably be protected magnetic fluid and magnetic current body cavity Shield improves under the premise of guaranteeing reliability so that valving can reliably work in the case where closing, opening two states The sealing performance of valve means.
3) magnetic fluid valve of the invention, it is contemplated that the demand of actual valve means machining accuracy, it can be in existing valve It is improved on device, also simply visibly marked, device good seal performance, high reliablity can be easy to be engineered application.
Detailed description of the invention
Fig. 1 is one main view of magnetic fluid valving scheme.
Specific embodiment
A kind of magnetic fluid valve, including upper valve body 1-1, lower valve body 1-2, upper end cover 1-3 and lower cover 1-4, wherein upper valve There is fluid feeding cavity 1-5 between body 1-1 and upper end cover, there is driving chamber 1-6 between lower valve body 1-2 and lower cover 1-4, in upper valve body 1-1 Bottom end have seal chamber 1-7, there is fluid cavity 1-8, inverted cone-connecting rod shape plug 1-9 successively to wear in the upper end of lower valve body 1-2 Fluid feeding cavity 1-5, seal chamber 1-7, fluid cavity 1-8 and driving chamber 1-6 are crossed, bottom end is embedded on magnetic inductive block 1-15, sealing Chamber 1-7 is disposed with encapsulated coil 1-10, magnetic current body cavity 1-11 and circular ring-shaped permanent-magnet body 1-13, magnetic current body cavity 1-11 from outside to inside Interior to be filled with magnetic fluid 1-12, driving chamber 1-6 is disposed with magnet exciting coil 1-14 and magnetic inductive block 1-15 from outside to inside, in magnetic conduction The upper and lower surfaces of block 1-15 have upper air gap 1-16 and lower air gap 1-17 respectively, and the center upper end cover 1-3 is provided with fluid inlet Through-hole, the upper surface of lower cover 1-4 are provided with groove, are placed with circular permanent magnet 1-18 in groove, and the right side of lower valve body 1-2 is from stream The position body cavity 1-8 is provided with the outlet slot 1-19 of fluid outflow.
Upper valve body 1-1, lower valve body 1-2, upper end cover 1-3, lower cover 1-4, plug 1-9, magnetic inductive block 1-15 material be High magnetic conduction steel, the material of magnetic current body cavity 1-11 are elastomeric rubber membrane, and magnetic fluid 1-12 the selection of material is MRF132-DG, circle Ring permanent magnet 1-13 selects ferromagnetic ferro-aluminum boron permanent magnet, and circular permanent magnet 1-18 selects magnetic slightly weak ferrite permanent-magnet Body.
Cooperated between upper valve body 1-1 and plug 1-9 using conical surface seal, also using cone between magnetic current body cavity 1-11 and plug 1-9 Face sealing cooperation, there is the annulus fluid channel of a 3-5mm between annular permanent magnet 1-13 and plug 1-9.
Upper air gap 1-16 with a thickness of 1-3mm, lower air gap 1-17 with a thickness of 3-10mm, upper air gap 1-16 and lower air gap 1- The design specification of 17 thickness is as follows, according to the switch motion demand of the pressure of fluid inlet and plug 1-9, air gap 1-16 in selection Thickness, according to magnetic inductive block 1-15 electromagnetic force suffered under magnet exciting coil 1-14 and circular permanent magnet 1-18 effect respectively, choosing The thickness of air gap 1-17 is removed, the thickness selection of lower air gap 1-17 need to ensure magnetic inductive block 1-15 under magnet exciting coil 1-14 energization action It can move upwards.
Magnet exciting coil 1-14 and encapsulated coil 1-10 is all made of the power supply mode of phase step type, and magnet exciting coil 1-14 and sealing Coil 1-10 encapsulated coil 1-10 energization using power supply mode of interlocking, when valve body is closed, magnet exciting coil 1-14 power-off, in valve When body is opened, magnet exciting coil 1-14 is powered and encapsulated coil 1-10 is powered off, and encapsulated coil 1-10 is powered, the actuation time of power-off is equal Lag behind the 0.5s of magnet exciting coil 1-14 power-off, the actuation time that is powered.
When magnet exciting coil 1-14 is powered off, using two-stage sealing structure, wherein using spherical shape between upper valve body 1-1 and plug 1-9 The mechanical system of the conical surface is sealed, and on this basis, spherical cone match is also used between magnetic current body cavity 1-11 and plug 1-9, And the magnetic fluid 1-12 in magnetic current body cavity 1-11, under the action of encapsulated coil 1-10, mechanical strength increases, it can be achieved that plug The secondary seal effect of 1-9, reliable sealing when ensuring that valve is closed, to weaken the harshness in machining to machining accuracy Demand.
The working method of device is as follows: when magnet exciting coil 1-14 is powered off, electricity of the magnetic inductive block 1-15 in circular permanent magnet 1-18 Under magnetic attraction effect, plug 1-9 is driven to be in bottom most position, at this point, upper valve body 1-1 and the end face plug 1-9 are in mechanical close Envelope state, while encapsulated coil 1-10 is powered, and under the action of the magnetic field produced by encapsulated coil 1-10 magnetic fluid 1-12, carries out Secondary seal between valve body 1-1 and the end face plug 1-9, annular permanent magnet 1-13 will provide one for the secondary seal of magnetic fluid 1-12 A proceeding magnetic field, to guarantee the mechanical strength of magnetic fluid 1-12, when magnet exciting coil 1-14 is powered, magnetic inductive block 1-15 is in excitation wire It is moved upwards under magnetic fields caused by circle 1-14, while plug 1-9 being driven to move upwards, so that upper valve body 1-1 and plug The separation of the end face 1-9, after the 0.5s that magnet exciting coil 1-14 is powered, encapsulated coil 1-10 power-off, magnetic fluid 1-12 restores liquid State, depressurization effect；When magnet exciting coil 1-14 is powered off again, electromagnetic attraction of the magnetic inductive block 1-5 in circular permanent magnet 1-18 It is moved downward under effect, upper valve body 1-1 and the end face plug 1-9 closure, after the 0.5s of magnet exciting coil 1-14 power-off, encapsulated coil 1-10 is powered, and magnetic fluid 1-12 carries out secondary seal.So the magnetic fluid valve that this patent is proposed can be preferably to valve Device is sealed, and can be relieved sealing element to high-precision demand is machined, has preferable engineering application value.

Claims (7)

1. a kind of magnetic fluid valve, which is characterized in that including upper valve body (1-1), lower valve body (1-2), upper end cover (1-3) and lower end It covers (1-4), wherein have between upper valve body (1-1) and upper end cover fluid feeding cavity (1-5), lower valve body (1-2) and lower cover (1-4) Between have driving chamber (1-6), have seal chamber (1-7) in the bottom end of upper valve body (1-1), have fluid cavity in the upper end of lower valve body (1-2) (1-8), inverted cone-connecting rod shape plug (1-9) sequentially pass through fluid feeding cavity (1-5), seal chamber (1-7), fluid cavity (1- 8) it is embedded on magnetic inductive block (1-15) with driving chamber (1-6), bottom end, seal chamber (1-7) is disposed with sealing from outside to inside Coil (1-10), magnetic current body cavity (1-11) and circular ring-shaped permanent-magnet body (1-13), magnetic current body cavity (1-11) is interior to be filled with magnetic fluid (1- 12), driving chamber (1-6) is disposed with magnet exciting coil (1-14) and magnetic inductive block (1-15) from outside to inside, at magnetic inductive block (1-15) Upper and lower surfaces have upper air gap (1-16) and lower air gap (1-17) respectively, the center upper end cover (1-3) is provided with fluid inlet Through-hole, the upper surface of lower cover (1-4) are provided with groove, are placed in groove circular permanent magnet (1-18), the right side of lower valve body (1-2) Side is provided with the outlet slot (1-19) that fluid flows out from the position fluid cavity (1-8).
2. a kind of magnetic fluid valve according to claim 1, which is characterized in that the upper valve body (1-1), lower valve body (1-2), upper end cover (1-3), lower cover (1-4), plug (1-9), magnetic inductive block (1-15) material be high magnetic conduction steel, magnetic fluid The material of chamber (1-11) is elastomeric rubber membrane, and magnetic fluid (1-12) the selection of material is MRF132-DG, circular ring-shaped permanent-magnet body (1- 13) ferromagnetic ferro-aluminum boron permanent magnet is selected, circular permanent magnet (1-18) selects magnetic slightly weak ferrite permanent magnet.
3. a kind of magnetic fluid valve according to claim 1, which is characterized in that the upper valve body (1-1) and plug (1- 9) cooperated between using conical surface seal, also cooperated using conical surface seal between magnetic current body cavity (1-11) and plug (1-9), annular permanent magnet There is the annulus fluid channel of a 3-5mm between (1-13) and plug (1-9).
4. a kind of magnetic fluid valve according to claim 1, which is characterized in that the upper air gap (1-16) with a thickness of 1-3mm, lower air gap (1-17) with a thickness of 3-10mm, the design specification of upper air gap (1-16) and lower air gap (1-17) thickness is such as Under, according to the switch motion demand of the pressure of fluid inlet and plug (1-9), the thickness of air gap (1-16) in selection, according to leading Magnetic patch (1-15) electromagnetic force lower suffered in magnet exciting coil (1-14) and circular permanent magnet (1-18) effect respectively, chooses air gap The thickness selection of the thickness of (1-17), lower air gap (1-17) need to ensure magnetic inductive block (1-15) under magnet exciting coil (1-14) energization action It can move upwards.
5. a kind of magnetic fluid valve according to claim 1, which is characterized in that magnet exciting coil (1-14) and encapsulated coil (1-10) is all made of the power supply mode of phase step type, and magnet exciting coil (1-14) and encapsulated coil (1-10) are using the supplier of electricity that interlocks Formula, in magnet exciting coil (1-14) power-off, encapsulated coil (1-10) is powered, when magnet exciting coil (1-14) is powered, encapsulated coil (1-10) power-off, encapsulated coil (1-10) is powered, the actuation time of power-off lags behind magnet exciting coil (1-14) power-off, it is dynamic to be powered Make the 0.5s of time.
6. a kind of magnetic fluid valve according to claim 1, which is characterized in that when the magnet exciting coil (1-14) powers off, Using two-stage sealing structure, wherein it is sealed between upper valve body (1-1) and plug (1-9) using the mechanical system of the spherical conical surface, On this basis, also using spherical cone match between magnetic current body cavity (1-11) and plug (1-9), and in magnetic current body cavity (1-11) For magnetic fluid (1-12) under the action of encapsulated coil (1-10), mechanical strength increases the secondary seal, it can be achieved that plug (1-9) Effect, to ensure reliably to seal, to weaken the challenging needs in machining to machining accuracy.
7. a kind of magnetic fluid valve according to claim 1, which is characterized in that the working method of described device is as follows: encouraging When magnetic coil (1-14) powers off, magnetic inductive block (1-15) drives plug (1- under the electromagnetic attraction effect of circular permanent magnet (1-18) 9) it is in bottom most position, at this point, upper valve body (1-1) and the plug end face (1-9) are in mechanical seal state, while encapsulated coil (1-10) is powered, and under the action of magnetic fluid (1-12) magnetic field produced by encapsulated coil (1-10), carries out upper valve body (1-1) and blocks up Secondary seal between head end face (1-9), annular permanent magnet (1-13) will provide one in advance for the secondary seal of magnetic fluid (1-12) Add magnetic field, to guarantee the mechanical strength of magnetic fluid (1-12), when magnet exciting coil (1-14) is switched to energized state by endpoint status When, magnetic inductive block (1-15) moves upwards under the magnetic fields caused by magnet exciting coil (1-14), while drive plug (1-9) to Upper movement, so that upper valve body (1-1) is separated with the end face plug (1-9), after the 0.5s that magnet exciting coil (1-14) is powered, seal line (1-10) power-off is enclosed, magnetic fluid (1-12) restores liquid condition, depressurization effect；When magnet exciting coil (1-14) powers off again When, magnetic inductive block (1-5) moves downward under the electromagnetic attraction effect of circular permanent magnet (1-18), upper valve body (1-1) and plug (1- 9) end face is closed, and after the 0.5s of magnet exciting coil (1-14) power-off, encapsulated coil (1-10) is powered, and magnetic fluid (1-12) carries out two Secondary sealing.
CN201910427422.XA 2019-05-22 2019-05-22 A kind of magnetic fluid valve Pending CN110094523A (en)

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Application Number Priority Date Filing Date Title
CN201910427422.XA CN110094523A (en) 2019-05-22 2019-05-22 A kind of magnetic fluid valve

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CN110094523A true CN110094523A (en) 2019-08-06

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2349415Y (en) * 1998-02-18 1999-11-17 大连大学 Magnetic fluid sealing safety valve
CN104455460A (en) * 2013-09-15 2015-03-25 南京大五教育科技有限公司 Dust prevention device of magnetic fluid
CN106369210A (en) * 2016-11-01 2017-02-01 珠海优特电力科技股份有限公司 Electromagnetic valve
CN207229876U (en) * 2017-09-18 2018-04-13 江苏圣泰阀门有限公司 A kind of solenoid valve for extra-supercritical unit main steam system
CN108775426A (en) * 2018-07-30 2018-11-09 江苏大学 A kind of magnetic fluid valve
CN109707859A (en) * 2019-01-04 2019-05-03 纽曼（盐城）阀门制造有限公司 One kind is from pressure seal shut-off valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2349415Y (en) * 1998-02-18 1999-11-17 大连大学 Magnetic fluid sealing safety valve
CN104455460A (en) * 2013-09-15 2015-03-25 南京大五教育科技有限公司 Dust prevention device of magnetic fluid
CN106369210A (en) * 2016-11-01 2017-02-01 珠海优特电力科技股份有限公司 Electromagnetic valve
CN207229876U (en) * 2017-09-18 2018-04-13 江苏圣泰阀门有限公司 A kind of solenoid valve for extra-supercritical unit main steam system
CN108775426A (en) * 2018-07-30 2018-11-09 江苏大学 A kind of magnetic fluid valve
CN109707859A (en) * 2019-01-04 2019-05-03 纽曼（盐城）阀门制造有限公司 One kind is from pressure seal shut-off valve

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