WO2012048658A1 - 一种电动阀 - Google Patents
一种电动阀 Download PDFInfo
- Publication number
- WO2012048658A1 WO2012048658A1 PCT/CN2011/080796 CN2011080796W WO2012048658A1 WO 2012048658 A1 WO2012048658 A1 WO 2012048658A1 CN 2011080796 W CN2011080796 W CN 2011080796W WO 2012048658 A1 WO2012048658 A1 WO 2012048658A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- nut
- assembly
- seat
- electric valve
- Prior art date
Links
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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
Definitions
- the present invention relates to the field of control valves, and more particularly to an electric valve for regulating fluid flow.
- the electric valve usually includes a valve seat assembly, a nut assembly, a needle screw assembly, and a rotor assembly.
- the valve seat assembly generally includes a valve seat, a valve seat and a connecting tube, and the valve seat has a valve port, a valve seat, a valve seat and a connection.
- the tube is typically welded integrally to form a valve seat assembly, and the valve needle of the needle screw assembly is mounted within the nut of the nut assembly.
- valve shaft and the valve port are different from each other, which causes the valve to be different. Poor mouth seal or eccentric wear on the valve port, thus making The reliability of the action of the electric valve is low, and the service life of the electric valve is also shortened.
- the valve stem assembly includes a lead screw and a valve needle driven by the lead screw, and further comprising a nut assembly, the nut assembly including a nut and a connecting piece, the nut being hollow
- the annular structure includes a positioning guide portion adjacent to the valve seat assembly, a nut connecting portion adjacent to the rotor assembly, and a supporting portion for fixing the connecting piece, wherein the nut connecting portion has an inner hole corresponding thereto a threaded portion that is threadedly engaged with the threaded rod; the corresponding inner or outer edge of the positioning guide has a guiding section, and the nut realizes a positioning fit with the valve core seat through a guiding section thereof.
- the thread inner diameter d2 of the thread segment is smaller than the inner hole diameter d3 corresponding to the positioning guide;
- the inner hole corresponding to the nut connecting portion further has a lead screw guiding section matched with the valve stem;
- the diameter dl of the lead screw guiding section is smaller than the thread inner diameter d2 of the threaded section
- the outer diameter D2 of the branch portion 7 is larger than the outer diameter D1 of the nut connecting portion;
- the electric valve according to the above configuration further comprises a transition portion between the support portion and the nut connecting portion, the outer diameter of the transition portion being larger than the outer diameter D1 of the nut connecting portion. And smaller than the outer diameter D2 corresponding to the branch.
- the outer edge of the nut connecting portion is further sleeved with a stopping mechanism of the rotor assembly
- the electric valve of the above structure is made of a non-metallic material
- the connecting piece is made of a metal material
- the connecting piece is fixedly embedded in the supporting portion by an injection molding method
- the sheet has at least one opening and is welded to the valve seat.
- the nut is further provided with a balance hole connecting the inner hole of the nut and the valve cavity;
- the support portion is divided between the positioning guide portion and the nut connecting portion by a step of the inner hole or the outer edge.
- the electric valve provided by the invention has a guiding section matched with the valve core seat at the lower end of the nut through the improvement of the nut structure, and a guiding section matched with the screw rod is arranged at the upper end of the nut, and the nut is fixed to the valve through the connecting piece On the seat.
- a nut structure facilitates the one-time forming of a plastic mold, and facilitates the assembly of the valve seat assembly with the valve needle screw assembly and the nut, and ensures the tolerance and accuracy of the relative position, so that the nut and the needle screw assembly and the valve
- the coaxiality between the valve ports of the core seat is easily ensured, and the problem of poor valve port sealing or eccentric wear of the valve port is avoided.
- the rotor assembly is improved. The frictional force when the rotor rotates is significantly reduced, and the operational reliability of the electric valve is also improved.
- Figure 1 is a schematic view showing the structure of an electric valve according to an embodiment of the present invention
- Figure 2 is an external view of the nut assembly of Figure 1 and a cross-sectional side view of the shaft;
- Figure 3 Outline drawing and axial side sectional view of the spool seat of Figure 1;
- Figure 4 is a schematic view showing the structure of another electric valve according to another embodiment of the present invention.
- Figure 5 Outline drawing and axial side sectional view of the nut assembly of Figure 4.
- Figure 6 Outline drawing and axial side sectional view of the spool seat in Figure 4.
- III-first guiding segment 112-second guiding segment
- FIG. 1 is a schematic structural view of a specific embodiment of an electric valve according to the present invention
- FIG. 2 is an outline view of the nut assembly and a cross-sectional view of the shaft
- FIG. 3 is an external view of the spool seat and a cross-sectional view of the shaft side. Please refer to Figure 1, Figure 2 and Figure 3.
- the electric valve provided by the present invention includes a valve seat assembly, a nut, a valve stem screw assembly, and a rotor assembly.
- the valve seat assembly includes a spool seat 11 and a valve seat 12.
- a valve port 113 is also formed on the spool seat 11, and the valve seat 12 has a cylindrical structure, and a valve chamber 121 is formed inside thereof.
- the valve seat assembly further includes a first connecting pipe 13 and a second connecting pipe 14.
- the spool seat 11, the valve seat 12, the first connecting pipe 13, and the second connecting pipe 14 are integrally connected to form a valve seat assembly.
- the first connecting pipe 13 and the second connecting pipe 14 may be integrally connected by welding, or may be integrally formed.
- the nut 32 and the connecting piece 31 constitute a nut assembly.
- the nut 32 is a substantially annular structure composed of a plurality of variable diameter cylinders (it is noted that the structure may have many extended forms), including a nut connecting portion 60, a support portion 70, a transition portion 90, and the vicinity of the rotor assembly.
- a positioning guide 80 or the like close to the valve seat assembly.
- the inner hole corresponding to the nut connecting portion 60 has a threaded portion 61 threadedly engaged with the screw rod 23; and the inner hole corresponding to the nut connecting portion 60 further has a screw guiding mechanism matched with the valve stem 21 In section 322, the bore dl of the lead screw guide section 322 is smaller than the thread inner diameter d2 of the threaded section 61.
- the thread inner diameter d2 of the threaded section 61 of the nut connecting portion 60 is smaller than the inner bore diameter d3 of the positioning guide 80.
- a spring rail 33 and a snap ring 34 are also provided on the outer edge of the nut connecting portion 60.
- the spring guide 33 and the stop slip ring 34 serve as a stopper mechanism for the rotor assembly, and the stopper mechanism cooperates with the stopper lever 42 of the rotor assembly described later to control the stroke of the valve needle.
- a transition portion 90 is further provided between the support portion 70 and the nut connecting portion 60, and the outer diameter of the transition portion 90 is interposed between the nut connecting portion 60 and the outer diameter of the support portion 70.
- a card slot for mounting the spring rail 33 is provided on the outer circumference of the transition portion 90, so that the spring rail 33 can be mounted more firmly and reliably.
- the transition portion 90 By providing the transition portion 90, the overall structure of the nut can be made compact, and the amount of material can be reduced, and the cost can be saved.
- those skilled in the art may not provide the transition portion 90 separately, but the outer diameter of the transition portion 90 is the same as that of the branch portion 70, and the combination of the two is used as the support portion, based on the technical suggestion provided by the present invention.
- the object of the invention can also be achieved.
- the support portion 70 is divided between the positioning guide portion 80 and the nut connecting portion 60 by a step of the inner hole or the outer edge.
- the support portion 70 is provided with a connecting piece 31.
- the connecting piece 31 is made of a metal material, has at least one opening and is welded and fixed to the valve seat.
- the nut 32 is made of a non-metallic material such as plastic.
- the connecting piece 31 can be integrally molded with the nut 32 as an insert by a mold forming method to form an assembly.
- the preferred nut adopts the method of injection molding of the mold. Since the inner hole dl ⁇ d2 ⁇ d3 of the nut and the middle part of the nut are stepped stepwise, the through hole in the middle of the nut can be formed by the integral core during injection molding.
- it can be processed by one-time clamping, so that the coaxiality is easy to ensure, so that the coaxiality between the inner holes dl, d2 and d3 of the nut can be ensured.
- the thickness of the cylindrical material of the connecting portion 60 is increased, so that the connecting piece 31 is embedded in the nut 32 to ensure the connection strength.
- the nut 32 is fixed to the valve seat 12 via a connecting piece 31.
- the inner hole corresponding to the positioning guide 80 has a guiding portion 321 , and the nut 32 passes through the guiding portion 321 to achieve a positioning fit with the valve core seat 11 .
- a communicating nut is radially opened.
- the hole and the valve chamber 121 balance the hole 71.
- the needle screw assembly includes a screw rod 23 and a valve needle 21 driven by the screw rod 23.
- the needle needle screw assembly further includes a valve needle sleeve 22, a dam 24, a spring 25, and a valve needle 21
- the valve needle sleeve 22 is integrally connected, and the valve needle 21 and the valve needle sleeve 22 can be integrally connected by welding, interference and pressure fitting, etc., the head of the screw rod 23 is provided with a dam 24, and the dam 24 can be welded, The interference pressure matching and the like are combined with the screw rod 23, and the screw rod 23 is fitted in the inner hole of the valve needle 21.
- the inner hole of the valve needle 21 is further provided with a spring 25, and the end of the screw rod 23 can abut against the spring 25.
- the screw 23 is elastically connected to the valve needle 21.
- the outer edge portion of the valve needle 21 has a guide portion 211.
- the rotor assembly includes a rotor 41, a stopper rod 42 and a joint connecting the two, and the rotor assembly is fixed to the upper end of the screw shaft 23.
- the electric valve further includes a casing 5, and the casing 5 is fitted on the valve seat 12 for sealing the valve body.
- a circular stepped surface is disposed on an outer edge portion of the valve core seat 11, and a first guiding portion 111 is disposed on the stepped surface, and the first guiding portion 111 of the valve core seat 11 is engaged with the guiding portion 321 of the nut 32 to make the valve
- the core seat 11 is positioned and mated with the nut 32.
- a spool accommodating chamber 114 is further provided on the spool seat 11, and a second guide portion 112 is provided at an inner edge portion of the accommodating chamber 114.
- An opening 115 connecting the receiving chamber 114 and the valve chamber 121 is also disposed on the spool seat 11.
- the second guide section 112 of the spool seat 11 cooperates with the guide section 211 of the valve needle.
- the valve needle 21 is slidably disposed in the accommodating chamber 114 of the spool seat 11 in the axial direction.
- the "inner edge portion” or “outer edge portion” as used in the present invention refers to the axial inner edge portion of the hole or the axial outer edge portion of the shaft, such as In this embodiment, it is an axial inner circular surface or an axial outer circular surface of the hole of the nut.
- the electric valve provided by the present invention has a smaller bore diameter d1 than the threaded inner diameter d2 of the threaded section 61.
- the thread inner diameter d2 of the threaded section 61 of the nut connecting portion 60 is smaller than the inner bore diameter d3 corresponding to the positioning guide 80. Therefore, the valve needle screw assembly and the nut can be screwed together, and at the same time, the guiding end and the valve needle guiding portion disposed at the lower end of the nut are axially slid, and the first guiding section and the second guiding section on the valve core seat are installed. In place, the nut assembly is then secured to the seat by welding the tab to the seat. The assembly process is reasonable.
- first guide portion and the second guide portion of the spool seat and the valve port on the spool seat can be the same One-time forming or mold forming to ensure the tolerance and accuracy of the relative position, so that the coaxiality between the nut and the needle screw assembly and the valve port of the valve seat can be easily ensured, avoiding the valve opening
- the sealing is not strict or the valve port is eccentrically worn.
- the coaxiality between the valve needle and the valve port is improved, the friction of the rotor of the rotor assembly is significantly reduced, and the operational reliability of the electric valve is also improve.
- FIG. 4 is a schematic structural view of another embodiment of an electric valve according to the present invention
- FIG. 5 is an outline view of the nut assembly and a cross-sectional view of the shaft
- FIG. 6 is an external view of the spool seat and a cross-sectional view of the shaft side. Please refer to Figure 4, Figure 5 and Figure 6.
- This embodiment is different from the foregoing embodiment in that a guide portion 321 is provided at the outer edge portion of the lower portion of the nut 32; the outer edge portion of the valve needle 21 has a guide portion 211.
- a circular stepped surface is disposed on the inner edge portion of the spool seat 11, and a stepped surface having a larger aperture is provided with a first guiding section 111, a first guiding section 111 of the spool seat 11 and a guiding section 321 of the nut 32.
- the spool seat 11 is fixedly connected with the nut 32;
- the second guide section 112 is disposed on the step surface having a smaller aperture, and the inner hole forms the spool receiving cavity 114, and the second guiding section 112 of the spool seat 11
- the valve needle 21 is slidably disposed in the accommodating chamber 114 of the spool seat 11 in the axial direction.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013533084A JP5987834B2 (ja) | 2010-10-15 | 2011-10-14 | 電動弁 |
CN201180049850.5A CN103261765B (zh) | 2010-10-15 | 2011-10-14 | 一种电动阀 |
KR1020137012518A KR101458424B1 (ko) | 2010-10-15 | 2011-10-14 | 전동밸브 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010515238.X | 2010-10-15 | ||
CN201010515234.1 | 2010-10-15 | ||
CN201010515238XA CN102454819B (zh) | 2010-10-15 | 2010-10-15 | 电动阀及其止动装置 |
CN2010105152341A CN102454818A (zh) | 2010-10-15 | 2010-10-15 | 一种电动阀 |
CN201110184918.2A CN102853086B (zh) | 2011-07-01 | 2011-07-01 | 一种电动阀装置 |
CN201110184918.2 | 2011-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012048658A1 true WO2012048658A1 (zh) | 2012-04-19 |
Family
ID=45937908
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/080796 WO2012048658A1 (zh) | 2010-10-15 | 2011-10-14 | 一种电动阀 |
PCT/CN2011/080797 WO2012048659A1 (zh) | 2010-10-15 | 2011-10-14 | 一种电动阀 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/080797 WO2012048659A1 (zh) | 2010-10-15 | 2011-10-14 | 一种电动阀 |
Country Status (4)
Country | Link |
---|---|
JP (2) | JP5987834B2 (zh) |
KR (2) | KR101458424B1 (zh) |
CN (2) | CN103261766B (zh) |
WO (2) | WO2012048658A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112576800A (zh) * | 2019-09-29 | 2021-03-30 | 浙江盾安禾田金属有限公司 | 电磁三通阀装配方法及电磁三通阀 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107061762B (zh) * | 2016-12-13 | 2022-03-25 | 盾安环境技术有限公司 | 一种导阀和主阀体连接结构及方法 |
JP6753789B2 (ja) * | 2017-01-25 | 2020-09-09 | 株式会社鷺宮製作所 | 電動弁及び冷凍サイクルシステム |
KR102408887B1 (ko) * | 2018-01-31 | 2022-06-14 | 저장 산후아 클라이메이트 앤드 어플라이언스 컨트롤스 그룹 컴퍼니 리미티드 | 전기 밸브 |
KR20220020400A (ko) * | 2018-08-17 | 2022-02-18 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | 전자 팽창 밸브 |
CN114017515B (zh) * | 2019-04-24 | 2024-11-08 | 浙江恒森实业集团有限公司 | 一种电子膨胀阀转子总成 |
CN110242480B (zh) * | 2019-07-29 | 2020-05-22 | 秦皇岛凡尔科技有限公司 | 一种管道发电机及其电动阀 |
CN114183547B (zh) * | 2019-11-19 | 2024-10-29 | 浙江盾安禾田金属有限公司 | 电子膨胀阀 |
CN212657334U (zh) * | 2020-06-17 | 2021-03-05 | 浙江盾安禾田金属有限公司 | 电子膨胀阀 |
KR20240033133A (ko) * | 2021-07-30 | 2024-03-12 | 제지앙 산후아 인텔리전트 컨트롤즈 컴퍼니 리미티드 | 전기 밸브 |
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JP2001050415A (ja) * | 1999-06-02 | 2001-02-23 | Fuji Koki Corp | 電動弁 |
JP2003148643A (ja) * | 2001-09-03 | 2003-05-21 | Saginomiya Seisakusho Inc | 電動弁 |
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2011
- 2011-10-14 CN CN201180049855.8A patent/CN103261766B/zh active Active
- 2011-10-14 CN CN201180049850.5A patent/CN103261765B/zh active Active
- 2011-10-14 KR KR1020137012518A patent/KR101458424B1/ko active IP Right Grant
- 2011-10-14 JP JP2013533084A patent/JP5987834B2/ja active Active
- 2011-10-14 KR KR1020137012475A patent/KR101455952B1/ko active IP Right Review Request
- 2011-10-14 JP JP2013533085A patent/JP5716980B2/ja active Active
- 2011-10-14 WO PCT/CN2011/080796 patent/WO2012048658A1/zh active Application Filing
- 2011-10-14 WO PCT/CN2011/080797 patent/WO2012048659A1/zh active Application Filing
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JP2001050415A (ja) * | 1999-06-02 | 2001-02-23 | Fuji Koki Corp | 電動弁 |
JP2003148643A (ja) * | 2001-09-03 | 2003-05-21 | Saginomiya Seisakusho Inc | 電動弁 |
CN1749606A (zh) * | 2004-09-17 | 2006-03-22 | 株式会社不二工机 | 电动阀 |
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Cited By (2)
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---|---|---|---|---|
CN112576800A (zh) * | 2019-09-29 | 2021-03-30 | 浙江盾安禾田金属有限公司 | 电磁三通阀装配方法及电磁三通阀 |
CN112576800B (zh) * | 2019-09-29 | 2022-06-17 | 浙江盾安禾田金属有限公司 | 电磁三通阀装配方法及电磁三通阀 |
Also Published As
Publication number | Publication date |
---|---|
JP5987834B2 (ja) | 2016-09-07 |
KR101455952B1 (ko) | 2014-10-28 |
JP2013539849A (ja) | 2013-10-28 |
KR20130085038A (ko) | 2013-07-26 |
CN103261766A (zh) | 2013-08-21 |
CN103261765B (zh) | 2015-05-20 |
JP2013539850A (ja) | 2013-10-28 |
KR101458424B1 (ko) | 2014-11-07 |
KR20130085039A (ko) | 2013-07-26 |
CN103261766B (zh) | 2015-04-15 |
WO2012048659A1 (zh) | 2012-04-19 |
CN103261765A (zh) | 2013-08-21 |
JP5716980B2 (ja) | 2015-05-13 |
KR101455952B9 (ko) | 2024-01-26 |
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