CN106641351A - Pilot control hydraulic one-way valve - Google Patents
Pilot control hydraulic one-way valve Download PDFInfo
- Publication number
- CN106641351A CN106641351A CN201611048529.6A CN201611048529A CN106641351A CN 106641351 A CN106641351 A CN 106641351A CN 201611048529 A CN201611048529 A CN 201611048529A CN 106641351 A CN106641351 A CN 106641351A
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- CN
- China
- Prior art keywords
- valve
- cover plate
- pilot
- guide
- main
- 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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2022—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means actuated by a proportional solenoid
-
- 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
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/024—Controlling the inlet pressure, e.g. back-pressure regulator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides a pilot control hydraulic one-way valve. The pilot control hydraulic one-way valve comprises a valve sleeve, a main valve core and a main spring; a radial hole is formed in the main valve core; a water outlet is formed in the valve sleeve; a cover plate is arranged at the top end of the valve sleeve; the main spring is fixed to the bottom surface of the cover plate; a plurality of through holes of which the upper ends are plugged are formed in the cover plate; an annular groove is formed in the centre of the cover plate to communicate the through holes to form an accommodating cavity; a draining hole is formed in the cover plate; the top of the cover plate is connected with a pilot valve body; a pilot valve core is arranged in the pilot valve body; a pilot spring is arranged on the pilot valve core in a sleeving manner; the bottom end of the pilot valve core extends into the accommodating cavity; an electromagnetic coil is arranged at the top end of the pilot valve body; a pole shoe is arranged between the pilot valve body and the electromagnetic coil; an armature is arranged in the electromagnetic coil; the end part of the armature penetrates through the pole shoe to be in contact with the top end point of the pilot valve core. The pilot control hydraulic one-way valve is simple in structure; the pilot valve core is closed or opened by controlling the on-off state of the power of the electromagnetic coil, so that the on-off state among a water inlet, the water outlet and a draining hole is controlled; therefore, combination control of liquid flowing directions and control of automatic flow distributing protecting function are realized.
Description
Technical field
The invention belongs to hydraulic valve technical field, and in particular to a kind of pilot control hydraulic pressure check valve, it is suitable for sea water, light
Water, the high water hydraulic system as working media such as water base, can be widely applied to intelligent Water hydraulic static pressure loading, water cleaning, hydraulic power
The fields such as system.
Background technology
Check valve is the direction control element commonly used in hydraulic system, is mainly used in controlling hydraulic fluid medium by spy
Determine switching on or off for direction.During tradition is using hydraulic oil as the hydraulic system of working media, the use of check valve is highly developed,
For the outlet of pump, entrance of executive component etc., and using sea water, fresh water, the high water hydraulic system as working media such as water base
System, due to the special physicochemical property of water, can bring a series of problem：1. the viscosity of water is low, poor lubricity, valve element and valve base chamber
Friction and valve port at leakage problem it is serious；2. the vapor pressure of water is significantly larger than mineral oil, when water is in valve port high velocity stream
When dynamic, flow field local pressure can be less than the vapor pressure of water, and then produce cavitation, the material at valve port is invaded by cavitation erosion
Erosion, so as to reduce functional reliability and the life-span of valve；3. the density of water, elastic modelling quantity are big compared with mineral oil, and " water attack " phenomenon is serious.
Additionally, the acquisition of water resource is more more convenient than hydraulic oil, cost is lower so that the hydraulic system with water as medium has
More wide application space, such as intelligent Water hydraulic static pressure loading, water cleaning, hydraulic power system and special application field, however,
The current either Hydraulic Elements market of hydraulic oil or aqueous medium, do not occur being provided simultaneously with the combination control in flow liquid direction and
Automatic shunt defencive function control, product, the present invention proposition, this difficult problem is solved well.
The content of the invention
The purpose of the present invention is combination control and the automatic shunt for overcoming existing check valve to be provided simultaneously with flow liquid direction
The problem of the function of protection control.
For this purpose, the invention provides a kind of pilot control hydraulic pressure check valve, including valve pocket, the main valve being arranged in valve pocket
Core, is arranged on the main spring of main valve plug inner chamber, and radial hole, radial hole and main valve plug inner space are offered on the main valve plug,
The valve pocket is provided with outlet, and the valve pocket top is provided with cover plate, and main spring end is fixed with cover plate bottom surface, in the cover plate
It is axially arranged with several through holes along it, the upper end closure of through hole is provided with cannelure by several through hole connection shapes in the middle of cover plate
Into cavity volume, the cover plate is provided with the discharge outlet connected with cavity volume, and the cover plate top is connected with guide valve blocks, the pilot valve
Pilot valve being provided with vivo, guide's spring being cased with the pilot valve, the pilot valve bottom extends to the cavity volume of cover plate
Interior, the guide valve blocks top is provided with solenoid, pole shoe is provided between guide valve blocks and solenoid, in the solenoid
Armature is provided with, armature end is contacted through pole shoe with the top end point of pilot valve.
Further, above-mentioned pilot control hydraulic pressure check valve also includes the main valve body being arranged on outside valve pocket, and cover plate is arranged on
On main valve body, the main valve body is provided with exhalant canal and drainage channel, and the exhalant canal is communicated with inside valve pocket, the row
Aquaporin is connected with the cavity volume in cover plate.
Further, guide's spring pedestal is installed, guide's spring bottom end is consolidated between above-mentioned guide valve blocks and cover plate
It is scheduled on guide's spring pedestal, the pilot valve passes through guide's spring pedestal.
Further, above-mentioned pilot valve top has been threaded connection locking nut.
Further, above-mentioned pilot valve top is provided with matrix ellipsoid, the armature end and the matrix ellipsoid cake
Contact.
Further, T-shaped hole is provided with inside above-mentioned pilot valve, the T-shaped bottom hole portion connects with the cavity volume of cover plate, T-shaped
Hole upper end both sides connect with guide valve blocks inside.
Further, above-mentioned cover plate and valve pocket are obtained using the aluminum-bronze material of soft, the pilot valve and main valve
Core is obtained using the stainless steel material of Jing intensive treatments.
Further, above-mentioned guide's spring and main spring adopt stainless steel 3J1, and Jing hidden lino removal works
Skill is obtained.
Compared with prior art, beneficial effects of the present invention：
(1) this pilot control hydraulic pressure check valve that the present invention is provided obtains dead electricity by control solenoid so that pilot valve
Core is turned off or on, disconnected and logical between water inlet, outlet, discharge outlet so as to control, and realizes the combination control in flow liquid direction
With the control of automatic shunt defencive function.
(2) this pilot control hydraulic pressure check valve that the present invention is provided can be with the element of other in hydraulic system or pipeline
It is board-like connection or tubular type connection, or even main valve body is valve block, becomes plug-in structure, and by element in the present invention not
Rust steel matter is replaced by corresponding carbon steel material, also used in hydraulic oil system, can substitute the check valve and electromagnetism of pump discharge
Overflow valve, expands its range of application.
(3) this pilot control hydraulic pressure one-way valve structures that the present invention is provided are simple, stable performance, with good anti-corruption
Corrosion energy, and extensive market popularization value.
The present invention is described in further details below with reference to accompanying drawing.
Description of the drawings
Fig. 1 is the structural representation of the first embodiment of pilot control hydraulic pressure check valve of the present invention.
Fig. 2 is the structural representation of second embodiment of pilot control hydraulic pressure check valve of the present invention
Description of reference numerals：1st, solenoid；2nd, pole shoe；3rd, guide valve blocks；4th, guide's spring；5th, guide's spring pedestal；6th, cover
Plate；7th, discharge outlet；8th, pilot valve；9th, radial hole；10th, water inlet；11st, valve pocket；12nd, outlet；13rd, main valve plug；14th, main bullet
Spring；15th, through flow hole；16th, through hole；17th, cavity volume；18th, T-shaped hole；19th, locking nut；20th, armature；21st, main valve body；22nd, draining is led to
Road；23rd, exhalant canal.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1：
As shown in figure 1, a kind of pilot control hydraulic pressure check valve is present embodiments provided, including valve pocket 11, it is arranged in valve pocket 11
Main valve plug 13, be arranged on the main spring 14 of the inner chamber of main valve plug 13, the main valve plug 13 is cone valve sealing structure, on main valve plug 13
Offer radial hole 9, radial hole 9 and the inner space of main valve plug 13, the valve pocket 11 is provided with and is connected inside valve pocket 11
Outlet 12, the top of the valve pocket 11 is provided with cover plate 6, and the end of main spring 14 is fixed with the bottom surface of cover plate 6, along it in the cover plate 6
It is axially arranged with several through holes 16, the upper end of through hole 16 blocks, and cannelure is provided with the middle of cover plate 6, and several through holes 16 are connected by this
Cavity volume 17 is formed, the cover plate 6 is provided with the discharge outlet 7 connected with cavity volume 17, and the top of the cover plate 6 is connected with guide valve blocks 3,
Pilot valve 8 is provided with the guide valve blocks 3, guide's spring 4 is cased with the pilot valve 8, the bottom of the pilot valve 8 is prolonged
Extend in the cavity volume 17 of cover plate 6, connection solenoid 1 in the top of the guide valve blocks 3 sets between guide valve blocks 3 and solenoid 1
Have in pole shoe 2, the solenoid 1 and be provided with armature 20, the end of armature 20 contacts through pole shoe 2 with the top end point of pilot valve 8,
Cover plate 6 is positioned to valve pocket 11 and main spring 14, while also as the valve seat of pilot valve 8.The bottom of valve pocket 11 is water inlet
10, it is connected with pumping source end, the outlet 12 and executive component on valve pocket 11（Or system, or pressurized cavity volume）End connection, on cover plate 6
The one end of discharge outlet 7 connect the cavity volume 17 of cover plate 6, the other end connects with external water tank or outer discharge pipe.
The embodiment of refinement, is provided with guide's spring pedestal 5, the first guided missile between the guide valve blocks 3 and cover plate 6
The bottom of spring 4 is fixed on guide's spring pedestal 5, and the pilot valve 8 passes through guide's spring pedestal 5, guide's spring pedestal 5 to make
For guide's spring 4 base simultaneously, also be pilot valve 8 provide guiding.The top of the pilot valve 8 has been threaded connection lock
Tight nut 19.The top of the pilot valve 8 is provided with matrix ellipsoid, and the end of the armature 20 contacts with the matrix ellipsoid cake.
T-shaped hole 18 is provided with inside the pilot valve 8, the bottom of T-shaped hole 18 connects with the cavity volume 17 of cover plate 6, the upper end two of T-shaped hole 18
Side connects with the inside of guide valve blocks 3, and pilot valve 8 can balance the pressure at its two ends by T-shaped hole 18.
The cover plate 6 and valve pocket 11 are obtained using the aluminum-bronze material of soft, and the pilot valve 8 and main valve plug 13 are adopted
It is obtained with the stainless steel material of Jing intensive treatments, by valve pocket 11 and soft-hard material of main valve plug 13, cover plate 6 and pilot valve 8
The mode of material pairing, reduces the friction between main valve plug 13 and valve pocket 11, and pilot valve 8 and cover plate 6, improves element
Service life.And guide's spring 4 and main spring 14 adopt stainless steel 3J1, and Jing hidden lino removal works
Skill is obtained, and improves its fatigue resistance and decay resistance.
This pilot control hydraulic pressure check valve that the present embodiment is provided can be tied as plug-in structure or tubular type connecting-type
Structure is used, and its course of work is as follows：
(1) the present embodiment is used as use process during check valve
Solenoid 1 produces magnetic pole in the case of being powered, and armature 20 pushes pilot valve 8 so that pilot valve 8 declines closure cover plate
Discharge outlet 7 on 6；Meanwhile, the pressure of water inlet 10 is higher than outlet 12, and aqueous medium is entered from water inlet 10, overcomes main valve plug 13
Deadweight and the spring force of main spring 14, main valve plug 13 rises, and aqueous medium smoothly flows out from outlet 12；And work as outlet 12
When pressure is higher than water inlet 10, due to the bearing area of outlet 12 it is bigger than the bearing area of water inlet 10, main valve plug 13 and valve pocket 11
Form valve port to close, and water inlet 10 and the pressure reduction of outlet 12 are bigger, its sealing effectiveness is better.
(2) the present embodiment controls valve as the multifunctional direction that automatic shunt is protected
In the case of the no power of solenoid 1, pilot valve 8 rises, and discharge outlet 7 is open-minded, and the pressure of water inlet 10 is higher than outlet 12,
Main valve plug 13 rises, and aqueous medium can flow to outlet 12 from water inlet 10, meanwhile, between the upper end of main valve plug 13 and cover plate 6
Through flow hole 15 will reduce therewith, form restriction, and water inlet 10 and the pressure reduction of outlet 12 are bigger, and main valve plug 13 rises displacement and gets over
Greatly, the restriction effect of through flow hole 15 is better, and aqueous medium preferentially flows to outlet 12 from water inlet 10 into rear；When water inlet 10 and going out
When the pressure of the mouth of a river 12 is equal, aqueous medium can flow to discharge outlet 7, so form protection to the pressurized cavity volume of outlet 12.
In addition, when the present embodiment is used as check valve, solenoid 1 obtains electric, when system needs off-load or unit to stop
During machine, can be by the power-off of solenoid 1, the high-pressure medium Jing of outlet 12 is successively between Jing main valve plugs 13, main valve plug 13 and cover plate 6
Through flow hole 15, the through hole 16 of cover plate 6 to discharge outlet 7, so as to realize quick relief.
Embodiment 2：
The present embodiment is on the basis of embodiment 1, as shown in Fig. 2 the pilot control hydraulic pressure check valve that the present embodiment is provided also is wrapped
The main valve body 21 being arranged on outside valve pocket 11 is included, cover plate 6 is arranged on main valve body 21, and the main valve body 21 is provided with exhalant canal 23
With drainage channel 22, the exhalant canal 23 communicated by outlet 12 with inside valve pocket 11, and the drainage channel 22 is by row
The mouth of a river 7 is connected with the cavity volume 17 in cover plate 6.
This pilot control hydraulic pressure check valve that the present embodiment is provided is used as board-like attachment structure, water inlet 10 and pumping source end
Connection, exhalant canal 23 and executive component（Or system, or pressurized cavity volume）End connection, drainage channel 22 is logical can connect water tank or
Outer row, its specific work process is with embodiment 1.
In addition, on the basis of above-described embodiment, the stainless steel of element in the present invention is replaced by into corresponding carbon steel
Material, also used in hydraulic oil system, can substitute the check valve and electromagnetic relief valve of pump discharge.
In sum, this pilot control hydraulic pressure check valve that the present invention is provided obtains dead electricity by control solenoid,
So that pilot valve is turned off or on, and it is disconnected and logical between water inlet, outlet, discharge outlet so as to control, realize flow liquid direction
Combination control and automatic shunt defencive function control；Its simple structure, it is easy to process, leak it is little, vibrate little, noise it is low,
Cavitation resistance is good, and job stability is high, is suitable for water base etc. as in the water hydraulic system of working media using sea water, fresh water, height
Direction control element.
Exemplified as above is only the illustration to the present invention, does not constitute the restriction to protection scope of the present invention, all
It is that design same or analogous with the present invention is belonged within protection scope of the present invention.
Claims (8)
1. a kind of pilot control hydraulic pressure check valve, including valve pocket (11), the main valve plug (13) being arranged in valve pocket (11), is arranged on
The main spring (14) of main valve plug (13) inner chamber, offers radial hole (9), radial hole (9) and main valve plug on the main valve plug (13)
(13) inner space, it is characterised in that：The valve pocket (11) is provided with outlet (12), and valve pocket (11) top is provided with cover plate
(6), main spring (14) end is fixed with cover plate (6) bottom surface, and several through holes are axially arranged with along it in the cover plate (6)
(16), the upper end closure of through hole (16), cannelure is provided with the middle of cover plate (6), and by this, several through hole (16) connections form cavity volume
(17), the cover plate (6) is provided with the discharge outlet (7) connected with cavity volume (17), and cover plate (6) top is connected with guide valve blocks
(3), pilot valve (8) is provided with the guide valve blocks (3), on the pilot valve (8) guide's spring (4), the elder generation is cased with
Guide valve core (8) bottom is extended in the cavity volume (17) of cover plate (6), and guide valve blocks (3) top is provided with solenoid (1), first
It is provided between pilot valve body (3) and solenoid (1) in pole shoe (2), the solenoid (1) and is provided with armature (20), armature (20)
End contacts through pole shoe (2) with the top end point of pilot valve (8).
2. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：Also include being arranged on valve pocket (11) outward
Main valve body (21), cover plate (6) is arranged on main valve body (21), and the main valve body (21) is provided with exhalant canal (23) and draining is logical
Road (22), the exhalant canal (23) communicates with inside valve pocket (11), the cavity volume in the drainage channel (22) and cover plate (6)
(17) it is connected.
3. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：The guide valve blocks (3) and cover plate (6)
Between guide's spring pedestal (5) is installed, guide's spring (4) bottom is fixed on guide's spring pedestal (5), the guide
Valve element (8) is through guide's spring pedestal (5).
4. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：Pilot valve (8) top passes through
Threaded connection locking nut (19).
5. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：Pilot valve (8) top is provided with
Matrix ellipsoid, armature (20) end contacts with the matrix ellipsoid cake.
6. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：T is provided with inside the pilot valve (8)
Type hole (18), T-shaped hole (18) bottom connects with the cavity volume (17) of cover plate (6), T-shaped hole (18) upper end both sides and guide valve blocks
(3) internal connection.
7. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：The cover plate (6) and valve pocket (11) are adopted
Be obtained with the aluminum-bronze material of soft, the pilot valve (8) and main valve plug (13) using Jing intensive treatments stainless steel
Material is obtained.
8. pilot control hydraulic pressure check valve as claimed in claim 1, it is characterised in that：Guide's spring (4) and main spring
(14) stainless steel 3J1, and Jing hidden lino removals technique is adopted to be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611048529.6A CN106641351A (en) | 2016-11-25 | 2016-11-25 | Pilot control hydraulic one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611048529.6A CN106641351A (en) | 2016-11-25 | 2016-11-25 | Pilot control hydraulic one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106641351A true CN106641351A (en) | 2017-05-10 |
Family
ID=58812015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611048529.6A Pending CN106641351A (en) | 2016-11-25 | 2016-11-25 | Pilot control hydraulic one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106641351A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725879A (en) * | 2017-10-19 | 2018-02-23 | 宁波文泽机电技术开发有限公司 | A kind of normally closed ratio one-way flow valves |
| CN108757617A (en) * | 2018-07-26 | 2018-11-06 | 无锡市华科力士水液压有限公司 | A kind of pilot type electromagnetic switch valve |
| CN109268566A (en) * | 2018-10-24 | 2019-01-25 | 黄小伟 | Solenoid valve |
| CN111720565A (en) * | 2019-03-19 | 2020-09-29 | 浙江盾安禾田金属有限公司 | Electromagnetic valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202841U (en) * | 1985-07-12 | 1986-07-30 | 北京冶金液压机械厂 | Electro-hydraulic servo water valve |
| US6286535B1 (en) * | 1991-08-19 | 2001-09-11 | Parker-Hannifin Corporation | Proportional pressure control valve |
| CN103174852A (en) * | 2011-12-23 | 2013-06-26 | 上海立新液压有限公司 | Electromagnetic controlled check valve |
| CN203431245U (en) * | 2013-03-14 | 2014-02-12 | 伊顿公司 | Electromagnetic valve assembly with a pilot pressure control device |
| JP2014214804A (en) * | 2013-04-25 | 2014-11-17 | 川崎重工業株式会社 | Valve device with excess flow check function |
-
2016
- 2016-11-25 CN CN201611048529.6A patent/CN106641351A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202841U (en) * | 1985-07-12 | 1986-07-30 | 北京冶金液压机械厂 | Electro-hydraulic servo water valve |
| US6286535B1 (en) * | 1991-08-19 | 2001-09-11 | Parker-Hannifin Corporation | Proportional pressure control valve |
| CN103174852A (en) * | 2011-12-23 | 2013-06-26 | 上海立新液压有限公司 | Electromagnetic controlled check valve |
| CN203431245U (en) * | 2013-03-14 | 2014-02-12 | 伊顿公司 | Electromagnetic valve assembly with a pilot pressure control device |
| JP2014214804A (en) * | 2013-04-25 | 2014-11-17 | 川崎重工業株式会社 | Valve device with excess flow check function |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725879A (en) * | 2017-10-19 | 2018-02-23 | 宁波文泽机电技术开发有限公司 | A kind of normally closed ratio one-way flow valves |
| CN107725879B (en) * | 2017-10-19 | 2019-06-07 | 上海申花电工器材有限公司 | A kind of normally closed ratio one-way flow valves |
| CN108757617A (en) * | 2018-07-26 | 2018-11-06 | 无锡市华科力士水液压有限公司 | A kind of pilot type electromagnetic switch valve |
| CN109268566A (en) * | 2018-10-24 | 2019-01-25 | 黄小伟 | Solenoid valve |
| CN109268566B (en) * | 2018-10-24 | 2024-02-09 | 黄小伟 | Electromagnetic valve |
| CN111720565A (en) * | 2019-03-19 | 2020-09-29 | 浙江盾安禾田金属有限公司 | Electromagnetic valve |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20191108 |