CN106369210A - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
- Publication number
- CN106369210A CN106369210A CN201610942397.5A CN201610942397A CN106369210A CN 106369210 A CN106369210 A CN 106369210A CN 201610942397 A CN201610942397 A CN 201610942397A CN 106369210 A CN106369210 A CN 106369210A
- Authority
- CN
- China
- Prior art keywords
- armature
- fluid
- electromagnetic valve
- coil
- magnetic
- 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.)
- Granted
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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
- 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
Abstract
The invention discloses an electromagnetic valve which comprises a shell, an armature and a valve body. A coil is arranged in the shell and internally provided with a fluid channel, a fluid inlet and a fluid outlet are formed in the two ends of the fluid channel, and the armature is slidably arranged in the fluid channel; the fluid outlet is formed in the valve body, and fluid enters the fluid channel from the fluid inlet and then flows out from the fluid outlet; and the electromagnetic valve further comprises permanent magnets. When the coil is powered on, the coil can drive the armature to open the fluid outlet, and when the coil is powered off, the permanent magnets can drive the armature to close the fluid outlet. The electromagnetic valve is convenient to clean, compact in system structure and stable and reliable in work.
Description
Technical field
The present invention relates to a kind of valve, particularly to a kind of electromagnetic valve.
Background technology
Once equipped with spring it is therefore an objective to electromagnetic valve power-off on conventional solenoid valve, spring plays reset closing function.But it is electric
Magnet valve is used for medium, in some systems it is desirable to the system after cleaned process should no medium remain, it is to avoid make a difference
Service life, purity chemical reaction occurring or affecting medium.Both ends of the spring binding face on conventional solenoid valve and placement
The cylinder right angle of spring is cleaning dead angle, if under not removing system situation, is also all difficult to reach even across being cleaned multiple times
To noresidue result it is common practice to dismounting system changes electromagnetic valve, or remove electromagnetic valve to part individually cleaning.This gives life
Product brings great inconvenience, affects working performance.
Electromagnetic valve in actual use, especially for some electric fields, electromagnetic valve work bad environments, is chronically at
The condition of high temperature, the heat that coil produces cannot distribute in time, be easily caused coil and damage, the use longevity of impact electromagnetic valve
Life.In addition, conventional electromagnetic valve arrangement is complex, body size is difficult to be effectively controlled.
Content of the invention
In order to overcome above-mentioned deficiency of the prior art, the invention provides a kind of electromagnetic valve, it adopts no spring electromagnetism
Valve, in the case of original system can be kept constant, by secondary knot clean water cleaning, you can realize impurity noresidue, pass through
Permanent magnet ensure that valve body well closes effect, and system structure is compact, stable and reliable in work, controls simple and convenient.
The present invention is achieved through the following technical solutions:
A kind of electromagnetic valve, it is characterised in that including housing, armature, valve body, is provided with coil in described housing, in described coil
Portion is provided with fluid passage, and described fluid passage two ends are fluid intake and fluid issuing, and described armature is slidably arranged on
In described fluid passage, described fluid issuing is opened on described valve body, and fluid enters described fluid from described fluid intake and leads to
Road, then flows out from described fluid outlet；Described electromagnetic valve also includes permanent magnet, and described permanent magnet is arranged under described coil
Side is simultaneously sheathed on outside described fluid passage；When described coil electricity, described coil can produce magnetic force and drive described rank
Ferrum moves to described fluid intake direction, and described armature opens described fluid issuing；When described coil blackout, described permanent magnet
Described armature can be driven to move to described fluid issuing direction, described armature closes described fluid issuing.
Alternatively, the working method of described armature is moving back and forth on vertical direction.
Alternatively, it is provided with magnetic conduction pad below described permanent magnet, described permanent magnet periphery is provided with outer shroud, described permanent magnetism
The magnetic field that body produces forms the magnetic of a closing through described armature, described adpting flange, described outer shroud and described magnetic conduction pad
Road.
Alternatively, it is provided with the second magnetic isolation unit between described permanent magnet and described outer shroud.
Alternatively, described second magnetic isolation unit is ring stainless steel or annular air gap band.
Alternatively, described coil is provided with and determines armature, between described coil and described armature, be provided with adpting flange, institute
When stating coil electricity, magnetic circuit that described coil produces through described armature, described determine armature, described housing and described adpting flange
Form closed magnetic circuit.
Alternatively, described determine to be provided with the first magnetic isolation unit between armature and described adpting flange.
Alternatively, described determine armature, described first magnetic isolation unit and described adpting flange pass through be welded and fixed.
Alternatively, described armature lower end is provided with sealing shroud.
Alternatively, described armature is provided with groove or through hole or the boss being easy to that fluid passes through.
Beneficial effects of the present invention:
The no spring electromagnetic valve of the present invention, due to not having spring, fluid passage can smooth setting, can be applied to various Jie
Matter, can easily be cleaned automatically, will not be to the purity of impact medium；Fluid flows through armature, can take away armature or line
The heat that circle produces, even if coil is electrified for a long time also does not allow easy burn-out, using more safe and reliable；Fluid or abluent can
Effectively lubricating is carried out to armature service aisle, is prevented from armature work and clamping stagnation occurs it is ensured that the sensitivity of electromagnetic valve；Armature exists
Move back and forth on vertical direction, armature can be flowed through in combination with the magnetic force of permanent magnet, armature self gravitation and fluid and produce
Raw pressure, the reliable promptness ensureing valve closing, reliability, when can reduce closing valve and keep valve closing
The power consumption penalty waited；Armature is arranged in fluid passage, and electromagnetic valve structure can be designed to compacter, can reduce electromagnetic valve
Size, be conducive to the Miniaturization Design of electromagnetic valve；In the magnetic circuit of permanent magnet periphery setting closing, the magnetic of permanent magnet can be strengthened
Power size, can achieve the control to large-size armature valve with less permanent magnet；Magnetic in the setting closing of coil periphery
Road, is capable of the magnetic force size of intensifier coil, and then reduces the size of coil, reduces cost；By arranging magnetic isolation unit, can reduce
The leakage field situation of coil magnetic circuit or magnetic circuit；Adpting flange by Type of Welding and the first magnetic isolation unit, determine armature and carry out
Welding, can reduce the thickness of fluid passage wall further, so that the distance between coil and armature is reduced further, increase magnetic
Power control effect；The sealing shroud of armature lower end, can strengthen the sealing effectiveness of electromagnetic valve；On armature, setting is easy to fluid and is passed through
Groove or through hole or boss structure, be adapted to the real work demand of various media, so that valve body is had higher logical
The property used.
Brief description
Fig. 1 is cross section view during electromagnetic valve valve closing of the present invention；
Fig. 2 is cross section view during electromagnetic valve valve opening of the present invention；
Fig. 3 is electromagnetic valve magnetic circuit schematic diagram of the present invention.
Description of reference numerals:
11: determine armature；
12: the first magnetic isolation units；
13: adpting flange；
14: coil；
15: housing；
21: armature；
22: sealing shroud；
31: outer shroud；
32: the second magnetic isolation units；
33: magnetic conduction pad；
34: permanent magnet；
35: liner；
41: valve body；
42: fluid intake；
43: fluid issuing；
44: fluid passage.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Retouched by reference to accompanying drawing
The embodiment stated be exemplary it is intended to for explain invention, and it is not intended that to invention restriction, in situation about not conflicting
Under, the embodiment in the application and the feature in embodiment can be mutually combined.
As shown in Figure 1 and Figure 2, the present invention provides a kind of electromagnetic valve, is provided with coil 14, sets inside coil 14 in housing 15
It is equipped with fluid passage 44, fluid passage 44 two ends are respectively fluid intake 42 and fluid issuing 43, armature 21 is slidably arranged
In fluid passage 44, fluid issuing 43 is opened on valve body 41, and fluid enters fluid passage 44, Ran Houcong from fluid intake 42
Flow out at fluid issuing 43.Permanent magnet 34 is arranged at coil 14 lower section and is sheathed on the outside of fluid passage 44.
It is provided with coil 14 and determines armature 21, between coil 14 and armature 11, be provided with adpting flange 13, determine armature 21 He
It is provided with the first magnetic isolation unit 12 between adpting flange 13.
Determine to be to be sealedly connected and fixed between armature 21, the first magnetic isolation unit 12 and adpting flange 13, connection surface is smooth easily clear
Clean, in order to preferably reduce the gap between coil and armature, reduce magnetic loss it is preferred that being connected by welding manner.
Armature 11 lower end is provided with sealing shroud 22, and sealing shroud 22 is sheathed on armature 11 lower end head, and sealing shroud 22 can make
Made with the material that silicone rubber etc. strengthens sealing effectiveness.It is provided with, on armature 11, the passage being easy to that fluid passes through, can pass through
Groove or through hole or boss structure are arranged on armature 21 to realize, concrete structure can be according to fluid properties, flow rates demand
Etc. being configured, passage need to meet surface and smooths easy cleaning and requires.
It is provided with magnetic conduction pad 33, permanent magnet 34 periphery is provided with outer shroud 31, permanent magnet 34 and outer shroud below permanent magnet 34
It is provided with the second magnetic isolation unit 32, the second magnetic isolation unit 32 can be ring stainless steel or annular air gap band between 31.Permanent magnetism
Body 34 can select Nd-Fe-B permanent magnetic.It is provided with permanent magnet 34 and fluid passage between permanent magnet 34 and fluid passage 44
The liner 35 that 44 sealings separate, liner 35 is made using non-permeable material.
As shown in figure 3, coil 14 energising when, coil 14 produce magnetic circuit through armature 21, determine armature 21, housing 15 and company
Acting flange 13 forms closed magnetic circuit c2.The part constituting magnetic circuit is made using magnetic conductive material, such as magnetically soft alloy.
Determine armature 21 to can also be and be set around coil 14 for independent structure it is also possible to be integrally formed with housing 15
The magnetic conduction passage of peripheral side is constituted, as long as disclosure satisfy that the requirement forming closed magnetic circuit c2.Fluid intake 42 can be arranged
In determining on armature 21 it is also possible to be arranged on housing 15 according to practical situation.
As shown in figure 3, the magnetic field that permanent magnet 34 produces is through armature 21, adpting flange 13, outer shroud 31 and magnetic conduction pad 33
Form the magnetic circuit c1 of a closing.Magnetic conduction pad 33 can be an integrated design of part with outer shroud 31, outer shroud 31 with even
Acting flange 13 can also be same design of part, as long as can form an airtight magnetic circuit c1 in the week side of boss of permanent magnet 34 being
Can.The part constituting magnetic circuit is made using magnetic conductive material, such as magnetically soft alloy.
The junction of adpting flange 13 and liner 35, or the junction between adpting flange 13 and valve body 41 can arrange
Seal member, to ensure the sealing of fluid passage 44.
Valve body 41 is made up of non-permeable material, such as nonmetallic materials etc..
Armature 21 upper end could be arranged to acute angle streamlined structure, can reduce the circulating resistance of fluid.
Electromagnetic valve work process is as follows:
When coil 14 is energized, coil 14 can produce magnetic force, and coil 14 magnetic force is right more than armature 21 self gravitation, permanent magnet 34
The suction of the armature 21 and fluid active force sum to armature 21, overcomes the frictional force of armature 34 and fluid passage 44 side wall, enters
And carry moving armature 21 to moving in fluid intake 42 direction, sealing shroud 22 is away from fluid issuing 43, and then fluid issuing 43 is opened,
Realize the unlatching of electromagnetic valve.
When coil 14 power-off, in armature 21 self gravitation, permanent magnet 34 to the suction of armature 21 and fluid to armature 21
The collective effect of active force under, armature 21 moves to fluid issuing 43 direction, sealing shroud 22 compress fluid issuing 43, Jin Erguan
Close fluid issuing 43, closed electromagnetic valve.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
Multiple changes, modification, replacement and modification can be carried out to these embodiments, all in the case of the principle of the disengaging present invention and objective
Include in the range of the claim of the present invention and its equivalent restriction.
Claims (10)
1. a kind of electromagnetic valve, it is characterised in that including housing, armature, valve body, is provided with coil in described housing, described coil
It is internally provided with fluid passage, described fluid passage two ends are fluid intake and fluid issuing, described armature is slidably arranged
In described fluid passage, described fluid issuing is opened on described valve body, and fluid enters described fluid from described fluid intake
Passage, then flows out from described fluid outlet；
Described electromagnetic valve also includes permanent magnet, and described permanent magnet is arranged at below described coil and is sheathed on outside described fluid passage
Side；
When described coil electricity, described coil can produce magnetic force and drive described armature to transport to described fluid intake direction
Dynamic, described armature opens described fluid issuing；
When described coil blackout, described permanent magnet can drive described armature to move to described fluid issuing direction, described rank
Described fluid issuing closed by ferrum.
2. electromagnetic valve according to claim 1 is it is characterised in that the working method of described armature is past on vertical direction
Multiple movement.
3. electromagnetic valve according to claim 1 determines armature it is characterised in that being provided with described coil, described coil with
It is provided with adpting flange, during described coil electricity, magnetic circuit that described coil produces is through described armature, described between described armature
Determine armature, described housing and described adpting flange and form closed magnetic circuit.
4. electromagnetic valve according to claim 3 is it is characterised in that described determine to be provided between armature and described adpting flange
First magnetic isolation unit.
5. electromagnetic valve according to claim 4 is it is characterised in that described determine armature, described first magnetic isolation unit and described company
Acting flange passes through to be welded and fixed.
6. electromagnetic valve according to claim 1 is it is characterised in that being provided with magnetic conduction pad below described permanent magnet, described
Permanent magnet periphery is provided with outer shroud, is provided with adpting flange, the magnetic that described permanent magnet produces between described coil and described armature
Field forms the magnetic circuit of a closing through described armature, described adpting flange, described outer shroud and described magnetic conduction pad.
7. electromagnetic valve according to claim 6 is it is characterised in that be provided with second between described permanent magnet and described outer shroud
Magnetic isolation unit.
8. electromagnetic valve according to claim 7 is it is characterised in that described second magnetic isolation unit is ring stainless steel or annular
The air gap band.
9. electromagnetic valve according to claim 1 is it is characterised in that described armature lower end is provided with sealing shroud.
10. what electromagnetic valve according to claim 1 it is characterised in that be provided with described armature was easy to that fluid passes through is recessed
Groove or through hole or boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610942397.5A CN106369210B (en) | 2016-11-01 | 2016-11-01 | A kind of solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610942397.5A CN106369210B (en) | 2016-11-01 | 2016-11-01 | A kind of solenoid valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369210A true CN106369210A (en) | 2017-02-01 |
| CN106369210B CN106369210B (en) | 2019-01-25 |
Family
ID=57894627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610942397.5A Active CN106369210B (en) | 2016-11-01 | 2016-11-01 | A kind of solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106369210B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979371A (en) * | 2017-04-14 | 2017-07-25 | 金华市德诺电器有限公司 | A kind of magnetic valve |
| CN106989196A (en) * | 2017-05-11 | 2017-07-28 | 西安航天动力研究所 | A kind of electromagnetic actuator device and guide type electromagnetic pneumatic operated valve |
| CN109830354A (en) * | 2019-03-26 | 2019-05-31 | 四川华都核设备制造有限公司 | A kind of electromagnetic coil and electromagnetic clutch |
| CN110094523A (en) * | 2019-05-22 | 2019-08-06 | 杭州沃凌的机电有限公司 | A kind of magnetic fluid valve |
| CN110504079A (en) * | 2019-09-17 | 2019-11-26 | 杭州永迪电器器材厂 | A kind of retractable driving device of high frequency time |
| CN110566711A (en) * | 2019-08-30 | 2019-12-13 | 宁波方太厨具有限公司 | Water valve capable of being automatically closed after power failure of gas water heater and water heater with same |
| WO2021062509A1 (en) * | 2019-10-04 | 2021-04-08 | Emicol Eletro Eletrônica S.A. | Solenoid valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646175A (en) * | 1979-09-22 | 1981-04-27 | Ckd Corp | Proportional control valve |
| CN2306371Y (en) * | 1997-06-13 | 1999-02-03 | 管坤明 | Enerty-saving diaphragm electromagnetic valve |
| CN201382195Y (en) * | 2009-01-13 | 2010-01-13 | 深圳市轻松科技股份有限公司 | Bistable three-way electromagnetic valve |
| CN101709806A (en) * | 2009-12-24 | 2010-05-19 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature self-locking electromagnetic valve |
| CN202678020U (en) * | 2012-06-12 | 2013-01-16 | 浙江工业大学 | Pressure-resistance springless direct-acting high-speed switch electromagnet |
| CN104167274A (en) * | 2014-08-20 | 2014-11-26 | 浙江万向精工有限公司 | Proportional electromagnet |
| CN204573279U (en) * | 2015-04-27 | 2015-08-19 | 宁波市佳音机电科技有限公司 | Normally closed solenoid valve |
-
2016
- 2016-11-01 CN CN201610942397.5A patent/CN106369210B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646175A (en) * | 1979-09-22 | 1981-04-27 | Ckd Corp | Proportional control valve |
| CN2306371Y (en) * | 1997-06-13 | 1999-02-03 | 管坤明 | Enerty-saving diaphragm electromagnetic valve |
| CN201382195Y (en) * | 2009-01-13 | 2010-01-13 | 深圳市轻松科技股份有限公司 | Bistable three-way electromagnetic valve |
| CN101709806A (en) * | 2009-12-24 | 2010-05-19 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature self-locking electromagnetic valve |
| CN202678020U (en) * | 2012-06-12 | 2013-01-16 | 浙江工业大学 | Pressure-resistance springless direct-acting high-speed switch electromagnet |
| CN104167274A (en) * | 2014-08-20 | 2014-11-26 | 浙江万向精工有限公司 | Proportional electromagnet |
| CN204573279U (en) * | 2015-04-27 | 2015-08-19 | 宁波市佳音机电科技有限公司 | Normally closed solenoid valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979371A (en) * | 2017-04-14 | 2017-07-25 | 金华市德诺电器有限公司 | A kind of magnetic valve |
| CN106989196A (en) * | 2017-05-11 | 2017-07-28 | 西安航天动力研究所 | A kind of electromagnetic actuator device and guide type electromagnetic pneumatic operated valve |
| CN106989196B (en) * | 2017-05-11 | 2023-10-24 | 西安航天动力研究所 | Electromagnetic driving device and pilot type electromagnetic pneumatic valve |
| CN109830354A (en) * | 2019-03-26 | 2019-05-31 | 四川华都核设备制造有限公司 | A kind of electromagnetic coil and electromagnetic clutch |
| CN110094523A (en) * | 2019-05-22 | 2019-08-06 | 杭州沃凌的机电有限公司 | A kind of magnetic fluid valve |
| CN110566711A (en) * | 2019-08-30 | 2019-12-13 | 宁波方太厨具有限公司 | Water valve capable of being automatically closed after power failure of gas water heater and water heater with same |
| CN110566711B (en) * | 2019-08-30 | 2022-01-25 | 宁波方太厨具有限公司 | Water valve capable of being automatically closed after power failure of gas water heater and water heater with same |
| CN110504079A (en) * | 2019-09-17 | 2019-11-26 | 杭州永迪电器器材厂 | A kind of retractable driving device of high frequency time |
| WO2021062509A1 (en) * | 2019-10-04 | 2021-04-08 | Emicol Eletro Eletrônica S.A. | Solenoid valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106369210B (en) | 2019-01-25 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170123 Address after: High tech Zone Tangjiawan town of Harbin Institute of Guangdong province Zhuhai City Road 519000 No. 1 1 E301-17 Applicant after: Zhuhai yote IOT Technology Co. Ltd. Address before: No. 102 special technology park Yinhua road Xiangzhou District 519000 Guangdong city of Zhuhai Province Applicant before: Zhuhai Unitech Power Technology Co., Ltd. |
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Effective date of registration: 20180914 Address after: 519000 -45895, 105 room 6, Baohua Road, Hengqin New District, Zhuhai, Guangdong (centralized office area) Applicant after: Zhuhai excellent kitchen Technology Co., Ltd. Address before: 519000 1 E301-17, 1 Harbin Industrial Road, Tangjia Bay, Zhuhai high tech Zone, Guangdong Applicant before: Zhuhai yote IOT Technology Co. Ltd. |
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