CN102330834B - Electromagnetic valve - Google Patents

Electromagnetic valve Download PDF

Info

Publication number
CN102330834B
CN102330834B CN201110263645.0A CN201110263645A CN102330834B CN 102330834 B CN102330834 B CN 102330834B CN 201110263645 A CN201110263645 A CN 201110263645A CN 102330834 B CN102330834 B CN 102330834B
Authority
CN
China
Prior art keywords
valve
iron core
piston
hole
groove
Prior art date
Application number
CN201110263645.0A
Other languages
Chinese (zh)
Other versions
CN102330834A (en
Inventor
石晓锋
Original Assignee
浙江中宝自控元件有限公司
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 浙江中宝自控元件有限公司 filed Critical 浙江中宝自控元件有限公司
Priority to CN201110263645.0A priority Critical patent/CN102330834B/en
Publication of CN102330834A publication Critical patent/CN102330834A/en
Application granted granted Critical
Publication of CN102330834B publication Critical patent/CN102330834B/en

Links

Abstract

The invention discloses an electromagnetic valve belonging to the field of valves and comprising a main valve and a pilot valve, wherein the main valve comprises a valve seat, and a piston accommodated in an inner cavity of the valve seat; the valve seat is provided with an input hole, an output hole and a pilot valve installing hole which are communicated with the inner cavity; the lower end part of the piston is sealed and covered on the output hole, the upper end part of the piston is provided with a groove, the bottom of the groove is provided with a piston valve hole communicated with the output hole; the pilot valve comprises a spring, a coil, a guide sleeve arranged on the pilot valve installing hole, a static iron core and a movable iron core, wherein the static iron core and the movable iron core are respectively arranged at the upper end and the lower end of an inner cavity of the guide sleeve, the coil is sleeved on the outer surface of the guide sleeve, the lower port of the guide sleeve is provided with a limit baffle ring, the lower end part of the movable iron core penetrates through a valve hole of a sealing piston of the limit baffle ring, the movable iron core is provided with an axial step through hole and a transverse hole which are penetrated, and the spring is arranged at the upper section of the step through hole and abuts and supports against the static iron core. The electromagnetic valve is characterized in that a transverse groove is arranged on the lower end face of the limit baffle ring, thus medium channel area between the input hole and the groove is reduced, valve-opening capacity is improved and energy-saving effect is realized.

Description

A kind of solenoid valve

Technical field

The invention belongs to valve field, especially relevant with a kind of solenoid valve.

Background technique

Application number is that 200810096924.0 application for a patent for invention file discloses a kind of solenoid valve, this a kind of solenoid valve comprise there is the valve seat of solid of rotation inner chamber, piston that can axial motion in the inner chamber of this valve seat, the pilot sleeve being connected with described valve seat one end, coordinate static iron core with described pilot sleeve, moving iron core and the moving iron core in described guide sleeve bobbin and the spring between static iron core that can axially reciprocating in described pilot sleeve, described valve seat is provided with a primary valve, described static iron core is fixedly connected with described pilot sleeve, it is hatch frame that described pilot sleeve pipe is used for fixedly one end of static iron core, the other end has the limit bottom surface that makes piston location, described valve seat underpart has outer pipe interface, its sidewall is also provided with inlet tube interface, piston comprises upper end portion and underpart, underpart diameter is less than upper end portion, lower-end cap is encapsulated in the primary valve of valve seat, the upper end of upper end portion has a groove, in this groove, offer the first boss, on described the first boss, be provided with piston valve port, the central position of this piston is an axial hole, on the bottom surface of described upper end portion groove, along the axial direction of described piston, offer at least one equalizing orifice, the diameter of moving iron core lower end is less than the diameter of described moving iron core main body, the leading portion of described underpart has a holding part, in this holding part, be connected with the valve body of the sealing that matches with described piston valve port.

When such solenoid valve uses, inlet tube input high-pressure medium, at closed electromagnetic valve state, piston lower end cap seal is in the primary valve of valve seat, the body cap of the underpart of moving iron core is encapsulated in piston valve port, high-pressure medium enters described groove by the gap between equalizing orifice and piston and valve seat, the pressure balance that piston two ends are subject to, in the time of need to opening solenoid valve, on moving iron core, move and make the valve body of underpart throw off piston valve port, high-pressure medium in groove enters outer pipe by the axial hole of the central position of piston, when axial hole cross-section area is greater than equalizing orifice cross-section area and interval area sum, pressure in groove can reduce, on piston, move disengagement primary valve, while needing shut electromagnetic valve, moving iron core moves down, the body cap of the underpart of moving iron core is encapsulated in piston valve port and piston is produced to downforce, high-pressure medium enters described groove by equalizing orifice, accelerate piston and move down speed.The axial hole sectional area of the central position of piston is larger, the coil power of moving on the moving iron core of driving will be larger, and power consumption will be larger, owing to there being equalizing orifice, axial hole sectional area is still larger, so the power consumption of a kind of solenoid valve of this type or relatively large.And it is expensive that the processing of equalizing orifice also can increase processing.

Summary of the invention

Object of the present invention is just to provide a kind of power consumption and the lower solenoid valve of cost.

For this reason, the present invention is by the following technical solutions: a kind of solenoid valve, comprise main valve and pilot valve, main valve comprise have inner chamber valve seat, be placed in this valve base cavity and can do the piston of axial motion, on valve seat, be provided with the input hole, delivery outlet and the pilot valve mounting hole that are all communicated with inner chamber, pilot valve mounting hole site is in the upper end of valve base cavity, its center line and piston movement direction in the same way, delivery outlet aperture be positioned at valve base cavity bottom surface and with piston lower end surface over against, piston comprises upper end portion and underpart, and underpart diameter is less than upper end portion, and underpart is covered in delivery outlet aperture, and upper end portion is provided with a groove, the piston valve opening that bottom portion of groove setting is communicated with valve seat delivery outlet, described pilot valve comprises pilot sleeve, static iron core, moving iron core, spring and coil, pilot sleeve is installed on pilot valve mounting hole, mounting coil is in pilot sleeve outer surface, pilot sleeve lower end oral area is provided with spacing back-up ring, spacing back-up ring center is through hole, static iron core is fixedly installed in pilot sleeve inner chamber upper end, moving iron core is located in pilot sleeve inner chamber lower end, the diameter of moving iron core lower end is less than the diameter of moving iron core main body, end, moving iron core lower end is provided with spool, moving iron core lower end is through the central through bore of spacing back-up ring, the spool sealing that matches with described piston valve opening, moving iron core is provided with axial step through hole, moving iron core lower end is provided with the transverse holes connecting with described ladder hole, make high-pressure medium can be input to pilot sleeve inner chamber between moving iron core and static iron core, described ladder hole epimere diameter is greater than hypomere, described spring is arranged at ladder hole epimere and connects with static iron core, it is characterized in that: described spacing back-up ring lower end surface is provided with cross groove, when described piston upper-end surface and the laminating of spacing back-up ring lower end surface, the gap of energy formation between piston outer side surface and valve base cavity wall be the medium channel to the groove of piston upper-end surface by the cross groove spacing back-up ring lower end surface, high-pressure medium enters described groove by cross groove, when shut electromagnetic valve, accelerate piston and move down speed.

When solenoid valve uses, input hole connects supplying tube input high-pressure medium, delivery outlet connects output tube, at closed electromagnetic valve state, piston lower end cap seal is in the delivery outlet aperture of valve seat, the cartridge cover of the underpart of moving iron core is encapsulated in piston valve opening aperture, high-pressure medium enters described groove by the gap between piston and valve seat, the pressure balance that piston two ends are subject to, in the time of need to opening solenoid valve, on the moving iron core of coil drive, move and make the spool of underpart throw off piston valve port, high-pressure medium in groove enters output tube by the piston valve opening of piston, when piston valve opening cross-section area is greater than the interval area between piston and valve seat, pressure in groove can reduce, on piston, move and throw off delivery outlet aperture, while needing shut electromagnetic valve, moving iron core moves down, the cartridge cover of the underpart of moving iron core is encapsulated in piston valve port and piston is produced to downforce, high-pressure medium enters the groove on described piston by the gap between piston and valve seat and described cross groove, accelerate piston and move down speed.

As to technique scheme supplement and perfect, the present invention also comprises following technical characteristics.

The spool of described end, moving iron core lower end is a steel ball, and end, moving iron core lower end has a holding cavity, and steel ball is installed in this holding cavity.

Use the present invention can reach following beneficial effect: the present invention is by arranging cross groove as high-pressure medium passage in spacing back-up ring lower end surface, reduced from supplying tube to the medium channel area the groove of piston upper-end surface, also just can reduce the sectional area of piston valve opening, in coil power one, regularly can under higher medium pressure environment, open pilot valve, improve the valve ability of opening; At medium pressure one regularly, can reduce coil power, realize energy-saving effect.

Accompanying drawing explanation

Fig. 1 is section of structure of the present invention.

Fig. 2 is the limiting block coil structures figure in Fig. 1.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.

As shown in Figure 1 and Figure 2, the present invention includes main valve and pilot valve, main valve comprises valve seat 15 and the piston 12 with inner chamber, piston 12 is placed in the inner chamber of valve seat 15 and can does axial motion, on valve seat 15, be provided with the input hole 14, delivery outlet 16 and the pilot valve mounting hole that are all communicated with inner chamber, pilot valve mounting hole site is in the upper end of valve base cavity, its center line and piston movement direction in the same way, the aperture of delivery outlet 16 be positioned at valve base cavity bottom surface and with piston end surface over against, piston 12 comprises upper end portion and underpart, and underpart diameter is less than upper end portion, and underpart is covered in the aperture of delivery outlet 16, and upper end portion is provided with a groove 11, the piston valve opening 13 that bottom portion of groove setting is communicated with valve seat delivery outlet 16, described pilot valve comprises pilot sleeve 2, static iron core 1, moving iron core 4, spring 5 and coil 3, pilot sleeve 2 is installed on pilot valve mounting hole, coil 3 is set in pilot sleeve 2 outer surfaces, pilot sleeve 2 lower end oral areas are provided with spacing back-up ring 8, spacing back-up ring 8 centers are through hole, static iron core 1 is fixedly installed in pilot sleeve 2 inner chamber upper ends, moving iron core 4 is located in pilot sleeve 2 inner chamber lower ends, the diameter of moving iron core 4 lower ends is less than the diameter of moving iron core 4 main bodys, moving iron core 4 ends, lower end have a holding cavity, in this holding cavity, be installed with steel ball spool 10, moving iron core lower end is through the central through bore of spacing back-up ring 8, spool 10 sealing that matches with piston valve opening 13, moving iron core 4 is provided with axial step through hole 7, moving iron core lower end is provided with the transverse holes 6 connecting with ladder hole 7, make high-pressure medium can be input to the pilot sleeve inner chamber between moving iron core and static iron core, ladder hole 7 epimere diameters are greater than hypomere, spring 5 is arranged at ladder hole epimere and connects with static iron core 1, spacing back-up ring 8 lower end surfaces are provided with cross groove 9, when piston upper-end surface and the laminating of spacing individual pen lower end surface, the gap of energy formation between piston outer side surface and valve base cavity wall be the medium channel to the groove of piston upper-end surface by the cross groove spacing back-up ring lower end surface, and high-pressure medium enters described groove by cross groove.

As another kind of mode of execution; the upper-end surface of piston 12 also can arrange cross groove; it is a kind of equivalent manners; should be considered as the protection domain of this patent; during piston upper-end surface and spacing back-up ring lower end surface laminating, can form gap between piston outer side surface and valve base cavity wall and pass through cross groove piston upper-end surface to the medium channel of the groove of piston upper-end surface

When solenoid valve uses, input hole connects supplying tube input high-pressure medium, delivery outlet connects output tube, at closed electromagnetic valve state, piston lower end cap seal is in the delivery outlet aperture of valve seat, the cartridge cover of moving iron core underpart is encapsulated in piston valve opening aperture, high-pressure medium enters described groove by the gap between piston and valve seat, the pressure balance that piston two ends are subject to, in the time of need to opening solenoid valve, on the moving iron core of coil drive, move and make the spool of underpart throw off piston valve port, high-pressure medium in groove enters output tube by the piston valve opening of piston, when piston valve opening cross-section area is greater than the interval area between piston and valve seat, pressure in groove can reduce, on piston, move and throw off delivery outlet aperture, while needing shut electromagnetic valve, moving iron core moves down, the cartridge cover of moving iron core underpart is encapsulated in piston valve port and piston is produced to downforce, high-pressure medium enters the groove on described piston by the gap between piston and valve seat and described cross groove, accelerate piston and move down speed.

Claims (2)

1. a solenoid valve, comprise main valve and pilot valve, main valve comprise have inner chamber valve seat (15), be placed in this valve base cavity and can do the piston (12) of axial motion, on valve seat (15), be provided with the input hole (14), delivery outlet (16) and the pilot valve mounting hole that are all communicated with inner chamber, pilot valve mounting hole site is in the upper end of valve base cavity, its center line and piston movement direction in the same way, delivery outlet (16) aperture be positioned at valve base cavity bottom surface and with piston (12) lower end surface over against, piston (12) comprises upper end portion and underpart, underpart diameter is less than upper end portion, underpart is covered in delivery outlet (16) aperture, and upper end portion is provided with a groove (11), and groove (11) bottom arranges the piston valve opening (13) being communicated with valve seat delivery outlet (16), described pilot valve comprises pilot sleeve (2), static iron core (1), moving iron core (4), spring (5) and coil (3), pilot sleeve (2) is installed on pilot valve mounting hole, coil (3) is set in pilot sleeve (2) outer surface, pilot sleeve (2) lower end oral area is provided with spacing back-up ring (8), spacing back-up ring (8) center is through hole, static iron core (1) is fixedly installed in pilot sleeve (2) inner chamber upper end, moving iron core (4) is located in pilot sleeve (2) inner chamber lower end, the diameter of moving iron core (4) lower end is less than the diameter of moving iron core (4) main body, moving iron core (4) end, lower end is provided with spool (10), moving iron core (4) lower end is through the central through bore of spacing back-up ring (8), spool (10) sealing that matches with described piston valve opening (13), moving iron core (4) is provided with axial step through hole (7), moving iron core (4) lower end is provided with the transverse holes (6) connecting with described ladder hole (7), ladder hole (7) epimere diameter is greater than hypomere, described spring (5) is arranged at the epimere of ladder hole (7) and connects with static iron core (1), it is characterized in that: described spacing back-up ring (8) lower end surface is provided with cross groove (9), when the laminating of described piston upper-end surface and spacing back-up ring lower end surface, can form gap between piston outer side surface and valve base cavity wall and pass through cross groove spacing back-up ring lower end surface to the medium channel of the groove of piston upper-end surface.
2. a kind of solenoid valve according to claim 1, is characterized in that: the spool (10) of described moving iron core (4) end, lower end is a steel ball, and moving iron core (4) end, lower end has a holding cavity, and steel ball is installed in this holding cavity.
CN201110263645.0A 2011-09-07 2011-09-07 Electromagnetic valve CN102330834B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110263645.0A CN102330834B (en) 2011-09-07 2011-09-07 Electromagnetic valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110263645.0A CN102330834B (en) 2011-09-07 2011-09-07 Electromagnetic valve

Publications (2)

Publication Number Publication Date
CN102330834A CN102330834A (en) 2012-01-25
CN102330834B true CN102330834B (en) 2014-08-20

Family

ID=45482723

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110263645.0A CN102330834B (en) 2011-09-07 2011-09-07 Electromagnetic valve

Country Status (1)

Country Link
CN (1) CN102330834B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359600A (en) * 2011-09-30 2012-02-22 河南航天压力元件有限公司 Pilot electromagnetic valve
CN103322205B (en) * 2012-03-21 2017-11-10 浙江三花制冷集团有限公司 A kind of bidirectional electromagnetic valve
CN103322273B (en) * 2012-03-21 2017-02-22 浙江三花股份有限公司 Bidirectional electromagnetic valve
CN103062477A (en) * 2012-12-06 2013-04-24 西安航空动力控制科技有限公司 High-pressure and dual-redundancy switch solenoid valve
CN103438262B (en) * 2013-09-02 2016-04-13 杭州神林电子有限公司 A kind of switching valve
CN104265973B (en) * 2014-08-10 2016-09-14 安徽省宁国新鼎汽车零部件有限公司 A kind of directly operated type electromagnetic switch valve
EP2998626B1 (en) 2014-09-19 2017-08-16 Danfoss A/S Solenoid valve
CN105673867A (en) * 2016-04-13 2016-06-15 湖南凯恩利液压机械制造有限公司 Electromagnetic valve for water and mechanical device
JP6698251B2 (en) * 2016-05-19 2020-05-27 Smc株式会社 solenoid valve
CN106671952A (en) * 2016-12-23 2017-05-17 北汽福田汽车股份有限公司 Brake and vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646835A1 (en) * 1996-11-13 1998-05-14 Teves Gmbh Alfred Electromagnetic valve arrangement
CN101576173A (en) * 2008-05-07 2009-11-11 浙江三花股份有限公司 Electromagnetic valve
JP6213358B2 (en) * 2014-04-15 2017-10-18 トヨタ自動車株式会社 Hydraulic control device for vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06213358A (en) * 1993-01-21 1994-08-02 Aisin Seiki Co Ltd Solenoid valve
CN202182240U (en) * 2011-09-07 2012-04-04 浙江中宝自控元件有限公司 Electromagnetic valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646835A1 (en) * 1996-11-13 1998-05-14 Teves Gmbh Alfred Electromagnetic valve arrangement
CN101576173A (en) * 2008-05-07 2009-11-11 浙江三花股份有限公司 Electromagnetic valve
JP6213358B2 (en) * 2014-04-15 2017-10-18 トヨタ自動車株式会社 Hydraulic control device for vehicle

Also Published As

Publication number Publication date
CN102330834A (en) 2012-01-25

Similar Documents

Publication Publication Date Title
CN102203480B (en) Valve assemblies
WO2012118211A1 (en) Damper with variable damping force
CN201747693U (en) Hydraulic cylinder with buffer function
CN202646752U (en) Three-stage pressure reduction regulating valve
CN203240025U (en) Intelligent one-way valve
MX348300B (en) Flow activated circulating valve.
CN202091555U (en) Slide-valve-type two-position and three-way reversing valve
CN201547321U (en) Pressure difference control make-break valve
CN204942748U (en) With the gas spray valve of damping mechanism
CN103154562A (en) Adjustable damping valve device
CN202659991U (en) Slow-closing check valve
CN201368227Y (en) Pneumatic resetting flow valve
CN202091279U (en) Thread cartridge buffering overflow valve
CN101737370B (en) Fast hydraulic change-over valve
CN108953461B (en) In-line hydraulic damper
CN201354871Y (en) Hydraulic electromagnetic ball valve
CN101435446A (en) Balance valve
CN202510790U (en) Pilot-operated cage type single seat regulating valve
CN102777300A (en) Valve device and high pressure pump using the same
CN201344266Y (en) Piston type pilot-operated solenoid valve with large aperture
CN102588633A (en) High-reliability one-way valve
CN203532914U (en) Electromagnetic valve for automobile pneumatic AMT gear shifting executing mechanism
CN102410171B (en) There is the reciprocating pump flowing out structure and the brake system of car with this reciprocating pump
CN203130118U (en) Differential pressure combination valve
CN203286008U (en) Pressure balance type gas injection digital valve

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model