CN103899784A - Diaphragm type solenoid valve - Google Patents
Diaphragm type solenoid valve Download PDFInfo
- Publication number
- CN103899784A CN103899784A CN201210571892.1A CN201210571892A CN103899784A CN 103899784 A CN103899784 A CN 103899784A CN 201210571892 A CN201210571892 A CN 201210571892A CN 103899784 A CN103899784 A CN 103899784A
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- China
- Prior art keywords
- iron core
- valve
- diaphragm
- electromagnetic valve
- spacer
- 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
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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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention belongs to the technical field of control, and particularly relates to a diaphragm type solenoid valve. The diaphragm type solenoid valve comprises a valve seat assembly, a valve cover assembly, a diaphragm assembly and an iron core assembly, wherein the valve seat assembly is provided with a flow path inlet and a flow path outlet; the valve cover assembly and the valve seat assembly are fixedly connected to form a valve cavity; the diaphragm assembly is arranged inside the valve cavity; the iron core assembly is welded to the valve cover assembly; the iron core assembly comprises a tube sleeve, a movable iron core, a fixed iron core and a return spring; the movable iron core and the fixed iron core are arranged inside the tube sleeve; the return spring is arranged between the movable iron core and the fixed iron core. The diaphragm type solenoid valve is characterized in that a metal distance piece is further arranged between the movable iron core and the fixed iron core; the hardness of the distance piece is greater than that of the movable iron core and the fixed iron core. According to the diaphragm type solenoid valve, when magnetic force changes in the switching process of the valve, the impact force on the fixed iron core by the movable iron core is effectively reduced and the reliability of products is improved.
Description
Technical field
The invention belongs to control technique field, be specifically related to a kind of diaphragm electromagnetic valve.
Background technique
Figure 1 shows that the structural representation of existing diaphragm electromagnetic valve.As shown in Figure 1, diaphragm electromagnetic valve comprises valve base part 1, is provided with import 13 and outlet 14 on valve base part 1, and valve gap parts 3 form inner valve pocket with the airtight assembling of valve base part 1, in valve pocket, be provided with diaphragm parts 2, diaphragm parts 2 cut off import 13 and outlet 14.Iron core member 4 is welded on valve gap parts 3, and it comprises the valve core 44 of jacket casing 45, moving iron core 41, returning spring 42, static iron core 43 and butt diaphragm parts 2.
This valve and the assembling of external excitation coil are used, in the time that drive coil is switched on, under the effect of drive coil electromagnetic force, between moving iron core 41 and static iron core 43, produce the magnetic force of inhaling mutually, the active force that moving iron core 41 overcomes returning spring 42 drives valve core 44 to move upward, and moving iron core 41 is fitted with static iron core 43, the pilot valve mouth of offering on diaphragm parts 2 is opened, diaphragm parts 2 move upward under the effect of pressure reduction, and main valve is opened, and make conducting between import 13 and outlet 14; Equally, when after drive coil power-off, moving iron core 41 drives valve core 44 to move downward under the effect of returning spring 42, pilot valve mouth on diaphragm parts 2 is closed, diaphragm parts move downward under the deadweight of returning spring power and core iron part, primary valve is closed, and makes to cut off between import 13 and outlet 14.
The diaphragm electromagnetic valve of prior art, the general environment using in larger flow control, therefore after DC coil power-off, the remanent magnetism existing between moving iron core and static iron core is larger, for iron core can be moved downward under the effect of returning spring, will reduce the adhesive area between moving iron core and static iron core, so the step 431 as shown in partial sectional view in existing structure schematic diagram is set in moving iron core upper-end surface or static iron core lower end surface, reduce the adhesive area of moving iron core and static iron core, to reduce the remanent magnetism power after coil blackout.But when after coil electricity, moving iron core is under the effect of electromagnetic force, move to static iron core, when moving iron core is fast and when static iron core adhesive, the suction-combining force is large especially, therefore moving iron core can hit end socket fast, impact force is larger, because step 431 is narrow, and the material of static iron core and moving iron core is softer, clashing into number of times frequently can make this step that certain wearing and tearing can occur, affect the performance of valve body, and the impurity wearing and tearing can make iron core stuck, impurity is along with MEDIA FLOW is to system simultaneously, also can make other the performance of accessory of system, then affect the performance of system.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is to improve the design of diaphragm electromagnetic valve, reduces the impact force of colliding opening static iron core in valve process and moving iron core, to improve reliability in product work process.
For this reason, diaphragm electromagnetic valve provided by the invention, comprise the valve base part that offers stream import and flowing path outlet, the valve gap parts that are fixedly connected with described valve base part, be arranged on the diaphragm parts in the valve pocket of described valve base part and be welded on the iron core member on described valve gap parts, described iron core member comprises jacket casing, be arranged on moving iron core and static iron core in described jacket casing, be arranged on the returning spring between described moving iron core and static iron core, it is characterized in that, between described moving iron core and static iron core, be also provided with metal spacing block, the material hardness of described spacer is greater than the hardness of described moving iron core and static iron core material.
Particularly, as the diaphragm electromagnetic valve of said structure, described spacer is ring structure, and cocoa slides axially and be arranged in the jacket casing of described iron core member, and described returning spring is through the annulus mesopore of described spacer;
Particularly, described spacer is ring structure, and is fixed on the end of described moving iron core or static iron core;
Preferably, described spacer is non-magnetic rustproof Steel material or magnesium alloy materials;
Preferably, described spacer thickness is between 0.10-0.20mm;
Preferably, described moving iron core and ,/or the material of static iron core be soft magnetic material, its material hardness is between HB160～HB210.
Preferably, the hardness state of described spacer is 3/4H;
Preferably, the elongation of described spacer is between 4%-7%.
The diaphragm type electromagnetic valve arrangement that the present invention provides, between moving iron core and static iron core, be also provided with the metal spacing block that is applicable to hardness and ductile material, in valve handoff procedure, when magnetic force change, can effectively reduce the impact force of moving iron core for static iron core, improve the reliability of product.
Brief description of the drawings
Fig. 1: the diaphragm electromagnetic valve structural representation of prior art;
Fig. 2: the structural representation of one of diaphragm electromagnetic valve specific embodiment that the present invention provides;
Fig. 3: the core iron part structural representation of the another kind of diaphragm electromagnetic valve that the present invention provides.
Symbol description in figure:
1-valve base part;
11-primary valve, 13-import, 14-outlet;
15-chamber, 16-accent;
2-diaphragm parts, 22-pilot valve mouth, 23-equalizing orifice;
3-valve gap parts, 31-Sealing;
4-core iron part;
41-moves iron core, 42-returning spring;
43-static iron core, 44-valve core, 45-jacket casing;
421-mesopore, 431-step;
5-takes over, 6-screw;
7-spacer.
Embodiment
Below in conjunction with specific embodiment, technology of the present invention is set forth.
Fig. 2 is the structural representation of one of diaphragm electromagnetic valve specific embodiment of providing of the present invention.As shown in Figure 2, the diaphragm electromagnetic valve of the present embodiment comprises the valve base part 1 that is provided with import 13 and outlet 14, taking over 5 for two is welded on respectively import 13 and exports 14 two ends, valve gap parts 3 assemble by screw 6 and valve base part 1, be provided with Sealing 31 therebetween, like this at a valve pocket 15 of valve base part 1 inner formation, in the valve pocket 15 of valve base part 1, be also provided with and connect import 13 and the ring-like primary valve 11 that exports 14, on diaphragm parts 2 butt primary valves 11, form main valve switch to regulate the stream break-make of controlling between import 13 and outlet 14.
Iron core member 4 comprises sleeve 45, and columniform static iron core 43 is welded in one end of sleeve interior 45, and valve gap parts 3 also offer the accent relative with diaphragm parts 2 16, on this accent 16 of the airtight welding of the other end of sleeve 45; In the sleeve 45 of iron core member 4, be also provided with the moving iron core 41 that can be free to slide, between moving iron core 41 and static iron core 43, butt has returning spring 42, between moving iron core 41 and static iron core 43, be also arranged with the spacer 7 that can be free to slide simultaneously, the structure of this spacer 7 is roughly ring-type, and its returning spring 42 is through the mesopore 421 of ring.
The end of moving iron core 41 is provided with valve core 44.The pilot valve mouth 22 that valve core 44 butt diaphragm parts 2 arrange forms pilot valve switch combination.
When being set in after drive coil (this is not shown) energising of sleeve 45 outsides, moving iron core 41 is under the effect of drive coil electromagnetic force, overcome the active force of returning spring 42, move upward, drive spacer 7 and static iron core 43 to fit, the pilot valve mouth 22 arranging on diaphragm parts 2 is opened, medium on diaphragm parts 2 flows to outlet 14 from pilot valve mouth 22, the medium of diaphragm below flows to diaphragm top from equalizing orifice 23, because the bore of equalizing orifice 23 is less than the bore of pilot valve mouth 22, so the rate-of flow of equalizing orifice 23 is less than the rate-of flow of pilot valve mouth 22, the pressure medium of diaphragm parts 2 tops declines gradually, in the time that the pressure of diaphragm parts 2 belows is greater than the pressure of diaphragm parts 2 tops, under the effect of pressure reduction, there is resiliently deformable motion in diaphragm parts 2, primary valve 11 is opened.In the time that moving iron core 41 moves upward, owing to there being spacer 7 to exist.So effectively less impact of colliding with static iron core 43.
When being set in after drive coil (this is not shown) power-off of sleeve 45 outsides, magnetic field diminishes, electromagnetic force between moving iron core 41 and static iron core 43 dies down, moving iron core 41 is under the effect of returning spring power, move downward, pilot valve mouth 22 is closed, the medium of diaphragm parts 2 tops no longer flows out from pilot valve mouth 22, the medium of diaphragm parts 2 belows flows to diaphragm parts 2 tops by equalizing orifice 23, make the pressure medium of diaphragm top increase gradually, when with the pressure balance of diaphragm below after, under the effect that diaphragm parts 2 are conducted oneself with dignity at returning spring 42 power and moving iron core 41, the motion of generation resiliently deformable, primary valve 11 is closed, make to cut off between import 13 and outlet 14.
In above-mentioned power process, the remanent magnetism existing between moving iron core 41 and static iron core 43 is larger, for iron core 41 can be moved downward under the effect of returning spring 42, reduces the remanent magnetism power between moving iron core 41 and static iron core 43.So be provided with a stainless steel spacer 7 between moving iron core 41 and static iron core 43, because stainless steel spacer 7 does not have magnetic, so be placed on material and be between the moving iron core 41 of soft magnetic material 00Cr13Si2 and static iron core 43 and can effectively reduce the remanent magnetism power between moving iron core 41 and end socket, make remanent magnetism power be less than returning spring power, moving like this iron core 41 just can move downward under the active force of returning spring, and pilot valve mouth is closed.
Be slightly less than the external diameter of core iron 41 without the external diameter of magnetic spacer 7, its internal diameter is slightly larger than the diameter of core iron counterbore, is convenient to like this it and is free to slide.The material hardness of spacer should be greater than the hardness of moving iron core and static iron core material, just can play the effect of the moving iron core of protection and static iron core.Material without magnetic insert should be selected applicable hardness and elongation, as preferred scheme, is 3/4 without the hardness of magnetic insert at state; If too firmly, be not easy to processing, hardness is too soft to be effective; Be controlled between 4%-7% without the elongation of magnetic insert; Without the THICKNESS CONTROL of magnetic insert between 0.1mm-0.20mm, can cracking in impact event if thickness is too thin, if too thick, can affect the action of moving iron core.
Because the stainless steel material within the scope of These parameters or or magnesium alloy materials, can obtain very high hardness in cold working, nonmagnetic, and there is good elasticity and lower ductility.In the moment of moving iron core and static iron core adhesive, the generation slight crack that can not be hit without magnetic spacer, and because its fatigue resistance is better, after multiple impact, can not produce slight crack yet, simultaneously because its ductility is low, after multiple impact,, can there is not the stuck phenomenon losing efficacy that waits in yet very little of dimensional changes; Selecting of thickness is mainly the characteristic based on ferromagnetic material, and ferromagnetic material heteropole is inhaled mutually, in the time that it pastes jail, and the suction-combining force maximum, in the time there is gap between it, the suction-combining force diminishes, along with the increase in gap, it is parabola and sharply declines, and in the time that gap acquires a certain degree, the suction-combining force disappears.
Fig. 3 is the core iron part structural representation of the another kind of diaphragm electromagnetic valve that provides of the present invention.As shown in Figure 3, in this embodiment, spacer 7A is ring structure, is fixed on the end of static iron core 43A.
Certainly, be understandable that, as the extension of said method, spacer 7A also can be fixed on the end of moving iron core 41A, plays equally the effect that reduces power-off impact force.
Compare and above-mentioned two schemes, spacer is slidably set and more there is advantage, avoid stationary structure in long-term using process, impacted and make spacer segregation phenomenon, avoid causing the stuck of inner moving iron core; The opposing party, slidably arranges spacer, can improve to greatest extent the area of contact of spacer and moving iron core/static iron core and impact to alleviate.
Below be only the preferred implementation exemplifying for setting forth technological scheme of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvements and modifications, all these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a diaphragm electromagnetic valve, comprise the valve base part (1) that offers stream import and flowing path outlet, the valve gap parts (3) that are fixedly connected with described valve base part (1), be arranged on the diaphragm parts (2) in the valve pocket of described valve base part (1) and be welded on the iron core member (4) on described valve gap parts (3), described iron core member (4) comprises jacket casing (41), be arranged on moving iron core (41) and static iron core (43) in described jacket casing (41), be arranged on the returning spring (42) between described moving iron core (41) and static iron core (43), it is characterized in that, between described moving iron core (41) and static iron core (43), be also provided with metal spacing block, the material hardness of described spacer is greater than the hardness of described moving iron core (41) and static iron core (43) material.
2. diaphragm electromagnetic valve as claimed in claim 1, it is characterized in that, described spacer is ring structure, and can slide axially and be arranged in the jacket casing (41) of described iron core member (4), described returning spring (42) is through the annulus mesopore of described spacer.
3. diaphragm electromagnetic valve as claimed in claim 1, is characterized in that, described spacer is ring structure, and is fixed on the end of described moving iron core (41) or static iron core (43).
4. diaphragm electromagnetic valve as claimed in claim 2, is characterized in that, described spacer is non-magnetic rustproof Steel material or magnesium alloy materials.
5. diaphragm electromagnetic valve as claimed in claim 4, is characterized in that, described spacer thickness is between 0.10-0.20mm.
6. the diaphragm electromagnetic valve as described in claim 1-5 any one, is characterized in that, the material of described moving iron core (41) and static iron core (43) is soft magnetic material, and its material hardness is between HB160～HB210.
7. diaphragm electromagnetic valve as claimed in claim 6, is characterized in that, the hardness state of described spacer is 3/4H.
8. the diaphragm electromagnetic valve as described in claim 6 any one, is characterized in that, the elongation of described spacer is between 4%-7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210571892.1A CN103899784A (en) | 2012-12-25 | 2012-12-25 | Diaphragm type solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210571892.1A CN103899784A (en) | 2012-12-25 | 2012-12-25 | Diaphragm type solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103899784A true CN103899784A (en) | 2014-07-02 |
Family
ID=50991290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210571892.1A Pending CN103899784A (en) | 2012-12-25 | 2012-12-25 | Diaphragm type solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103899784A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712825A (en) * | 2015-02-06 | 2015-06-17 | 瑞立集团瑞安汽车零部件有限公司 | Solenoid valve capable of being connected with various female plugs in inserting mode |
| CN106979371A (en) * | 2017-04-14 | 2017-07-25 | 金华市德诺电器有限公司 | A kind of magnetic valve |
| CN109555874A (en) * | 2017-09-26 | 2019-04-02 | 株式会社开滋Sct | The assemble method and its assembled configuration and diaphragm valve of diaphragm valve |
| CN111396593A (en) * | 2019-01-03 | 2020-07-10 | 浙江三花制冷集团有限公司 | Pilot-operated type electromagnetic valve |
| CN113124182A (en) * | 2021-04-12 | 2021-07-16 | 宁波兴茂电子科技有限公司 | Pilot-operated type electromagnetic valve with scale prevention function |
| CN113187946A (en) * | 2021-07-02 | 2021-07-30 | 星宇电子(宁波)有限公司 | Double-disc spring type precision proportional valve for respirator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049715U (en) * | 1988-09-23 | 1989-12-20 | 许奠清 | High frequency electromagnetic valve |
| US4948090A (en) * | 1989-09-27 | 1990-08-14 | Chen Chge San | Induction type automatic-controlled fluid faucet |
| JPH0674355A (en) * | 1992-08-25 | 1994-03-15 | Mitsubishi Electric Corp | Solenoid valve |
| JPH09170674A (en) * | 1995-12-20 | 1997-06-30 | Saginomiya Seisakusho Inc | Solenoid valve |
| CN201396474Y (en) * | 2009-05-10 | 2010-02-03 | 方云 | Normal-closed electromagnetic valve |
-
2012
- 2012-12-25 CN CN201210571892.1A patent/CN103899784A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049715U (en) * | 1988-09-23 | 1989-12-20 | 许奠清 | High frequency electromagnetic valve |
| US4948090A (en) * | 1989-09-27 | 1990-08-14 | Chen Chge San | Induction type automatic-controlled fluid faucet |
| JPH0674355A (en) * | 1992-08-25 | 1994-03-15 | Mitsubishi Electric Corp | Solenoid valve |
| JPH09170674A (en) * | 1995-12-20 | 1997-06-30 | Saginomiya Seisakusho Inc | Solenoid valve |
| CN201396474Y (en) * | 2009-05-10 | 2010-02-03 | 方云 | Normal-closed electromagnetic valve |
Non-Patent Citations (1)
| Title |
|---|
| 满军等: "永磁屏蔽式耐高压高速开关电磁铁", 《浙江大学学报（工学版）》, vol. 46, no. 2, 15 February 2012 (2012-02-15), pages 309 - 317 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712825A (en) * | 2015-02-06 | 2015-06-17 | 瑞立集团瑞安汽车零部件有限公司 | Solenoid valve capable of being connected with various female plugs in inserting mode |
| CN106979371A (en) * | 2017-04-14 | 2017-07-25 | 金华市德诺电器有限公司 | A kind of magnetic valve |
| CN109555874A (en) * | 2017-09-26 | 2019-04-02 | 株式会社开滋Sct | The assemble method and its assembled configuration and diaphragm valve of diaphragm valve |
| CN111396593A (en) * | 2019-01-03 | 2020-07-10 | 浙江三花制冷集团有限公司 | Pilot-operated type electromagnetic valve |
| CN111396593B (en) * | 2019-01-03 | 2023-12-15 | 浙江三花商用制冷有限公司 | Pilot-operated electromagnetic valve |
| CN113124182A (en) * | 2021-04-12 | 2021-07-16 | 宁波兴茂电子科技有限公司 | Pilot-operated type electromagnetic valve with scale prevention function |
| CN113187946A (en) * | 2021-07-02 | 2021-07-30 | 星宇电子(宁波)有限公司 | Double-disc spring type precision proportional valve for respirator |
| CN113187946B (en) * | 2021-07-02 | 2021-09-07 | 星宇电子(宁波)有限公司 | Double-disc spring type precision proportional valve for respirator |
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Application publication date: 20140702 |
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