CN103267160B - Normally-opened and normally-closed type electric control valve - Google Patents
Normally-opened and normally-closed type electric control valve Download PDFInfo
- Publication number
- CN103267160B CN103267160B CN201310197957.5A CN201310197957A CN103267160B CN 103267160 B CN103267160 B CN 103267160B CN 201310197957 A CN201310197957 A CN 201310197957A CN 103267160 B CN103267160 B CN 103267160B
- Authority
- CN
- China
- Prior art keywords
- electromagnetic coil
- semi
- slide bar
- circular plate
- valve core
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mechanically-Actuated Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Provided is a normally-opened or normally-closed type electric control valve. The normally-opened and normally-closed type electric control valve comprises a valve cavity body and a valve element, wherein the valve element is connected with a valve element rotary shaft, the other end of the valve element rotary shaft is connected with a motor, a return spring is sleeved on the periphery of the valve element rotary shaft, a section of semi-cylindrical rotary shaft outer small teeth is arranged on the outer side of a semi-circle, tightly close to the return spring, of the valve element rotary shaft, the height of the section of semi-cylindrical rotary shaft outer small teeth is 3cm, a semicircle plate is arranged on the outer side of the section of semi-cylindrical rotary shaft outer small teeth, a section of semicircle plate inner small teeth is arranged on the inner side of the semicircle plate, the height of the section of semicircle plate inner small teeth is 4cm, the semicircle plate inner small teeth are matched with the rotary shaft outer small teeth, two ends of the semicircle plate are respectively connected with a sliding rod, and the sliding rods penetrate through holes formed in two ends of a sliding rod sleeve rod fixed on a sliding rod sleeve rod support, and are connected with a sliding rod fixing rod. The normally-opened and normally-closed type electric control valve is characterized in that a permanent magnet block is arranged on the sliding rod sleeve rod support, an electromagnetic coil is arranged in the center of the sliding rod fixing rod, magnetic attracting blocks are arranged on two sides of the electromagnetic coil, the direction of a magnetic field produced by the electromagnetic coil after the electromagnetic coil is energized is opposite to the direction of a magnetic field of the permanent magnet block, and a control module for controlling the motor controls the electromagnetic coil to be energized or interrupted.
Description
Technical field
The present invention relates to a kind of open in usual or Normally closed type electric control valve, belong to valve and Valve controlling sciemtifec and technical sphere.
Background technique
Electric control valve chemical industry application widely, but these electric control valves run into have a power failure suddenly time, can only manually go to on-site manual to open or close mortor operated valve, to ensure safety, this be breakneck to going to on-site manual operator! And market there is no a kind of electric control valve that can automatically can open or close when running into and having a power failure suddenly.
Summary of the invention
The object of this invention is to provide the open in usual or Normally closed type electric control valve of a kind of one that can automatically can open or close when running into and having a power failure suddenly.
A kind of open in usual or Normally closed type electric control valve, comprise a valve chamber and be arranged on the spool in valve chamber, spool top is connected with a valve core shaft, the other end of valve core shaft is connected with motor, the periphery cover of valve core shaft near spool one end has a return spring, the effect of return spring spool can be kept to be in close completely or full open position when not having External Force Acting, the very intensive little tooth of the vertical bar shape having one section of 3cm high outside the hemicycle that valve core shaft is close to return spring, form the outer little tooth of semicolumn rotating shaft, outside the outer little tooth of rotating shaft, corresponding position has a semi-circular plate, little tooth in the very intensive semi-circular plate of the vertical bar shape having one section of 4cm high inside semi-circular plate, in semi-circular plate, the outer little tooth of little tooth and semicolumn rotating shaft can match and engages, semi-circular plate two ends are respectively connected with a slide bar and form U-shape structure with semi-circular plate, slide bar is through the hole at the slide bar loop bar two ends be fixed on jack rod sleeve shaft bar, then be connected with the slide bar fixing rod away from semi-circular plate side, valve core shaft is at semi-circular plate, pass in the framework of two slide bars and slide bar loop bar composition, the Placement of slide bar and slide bar fixing rod is: slide bar is through the aperture at slide bar fixing rod two ends, and fixed by two adjusting nuts be screwed on slide bar of slide bar fixing rod both sides, the distance at slide bar fixing rod and semi-circular plate two ends can be regulated by regulating two adjusting nuts, respectively overlap outside two slide bars between semi-circular plate two ends and slide bar loop bar and have a little spring, it is characterized in that:
1, jack rod sleeve shaft bar is connected with the neutral position of slide bar loop bar and makes slide bar loop bar be fixed on jack rod sleeve shaft bar, away from valve core shaft side, one piece of permanent magnets is installed in the position of jack rod sleeve shaft bar fixed slip bar loop bar, the slide bar fixing rod central authorities position corresponding with permanent magnets is provided with an electromagnetic coil, the both sides of electromagnetic coil are respectively provided with one piece of magnetic block, make permanent magnets just in time can hold two pieces of magnetic blocks, the magnetic direction that electromagnetic coil energising produces is contrary with the magnetic direction of permanent magnets; The control module controlling motor controls electromagnetic coil energising or power-off.
2, when motor receive signal make valve core shaft overcome valve core shaft overcoat the effect of return spring power and make spool open or close a certain desired location and make motor have a power failure while, control module provides signal makes electromagnetic coil be energized, the magnetic field that electromagnetic coil energising produces overcomes the attraction force of permanent magnets to magnetic block, electromagnetic coil and permanent magnets are repelled each other and move right namely to move away from permanent magnets direction, electromagnetic coil moves away from permanent magnets direction and pulls two slide bars and compress the outer little spring of slide bar, semi-circular plate is driven to move right together, and make little tooth in the semi-circular plate of semi-circular plate be stuck on the outer little tooth of rotating shaft, thus pinning valve core shaft no longer rotates, now electromagnetic coil is energized always and keeps pinning valve core shaft and do not rotate, when motor again receive signal make valve core shaft overcome the return spring power effect of valve core shaft overcoat and make spool open or close another desired location time, control module is while giving motor power transmission, provide signal cut electromagnetic coil power supply, make electromagnetic coil power-off and electromagnetic field disappears, now be enclosed within the spring-back force of the little spring on slide bar and the magnetic attraction of permanent magnets attracting magnetic suction block, by semi-circular plate, slide bar, slide bar loop bar, electromagnetic coil is moved to the left together with magnetic block, the magnetic block of electromagnetic coil both sides is held by permanent magnets and to make in semi-circular plate little tooth away from the outer little tooth of rotating shaft, remove the locking of valve core shaft, thus make motor to drive valve core shaft and be with movable valve plug to open or close another desired location, while spool opens or closes another desired location and makes motor have a power failure, control module provides signal makes electromagnetic coil again be energized, the magnetic field that electromagnetic coil energising produces overcomes the attraction force of permanent magnets to magnetic block, electromagnetic coil and permanent magnets are repelled each other and move right namely to move away from permanent magnets direction, electromagnetic coil moves away from permanent magnets direction and pulls two slide bars and compress the outer little spring of slide bar, semi-circular plate is driven to move right together, and make little tooth in the semi-circular plate of semi-circular plate be stuck on the outer little tooth of rotating shaft, thus pinning valve core shaft no longer rotates again, no longer rotating at valve core shaft is before instruction energising do not received by motor, electromagnetic coil is energized always and keeps pinning valve core shaft and do not rotate.
3, when the unexpected power-off of the general power supplying electric control valve, electromagnetic coil power-off and electromagnetic field disappear, now be enclosed within the spring-back force of the little spring on slide bar and the magnetic attraction of permanent magnets attracting magnetic suction block, by semi-circular plate, slide bar, slide bar loop bar, electromagnetic coil is moved to the left together with magnetic block, the magnetic block of electromagnetic coil both sides is held by permanent magnets and to make in semi-circular plate little tooth away from the outer little tooth of rotating shaft, remove the locking of valve core shaft, now because of the return spring return active force by valve core shaft overcoat, valve core shaft rotation is returned to and often offers fixed position or normally closed desired location, often to offer fixed or normally closed setting be design setting when producing, instead of can change setting after dispatching from the factory.
4, spool can be ball valve, and valve chamber is the valve chamber of ball valve; Spool also can be butterfly valve, and valve chamber is the valve chamber of butterfly valve.
5, electric control valve open in usual and Normally closed type electric control valve is divided into, electric control valve open in usual and Normally closed type electric control valve all have two-way regulating function, namely when spool is in any position, can on request or instruction make spool open certain angle again or turn down certain angle.
The present invention compared with prior art has the following advantages:
1, the present invention can when running into the unexpected power-off of general power or having a power failure suddenly, can under the effect of return spring power by modulating valve returning quickly to the closedown completely of factory setting or full open position, thus can meet chemical enterprise run into have a power failure suddenly time needs cut off or open appointment pipeline to ensure the demand of the safety of chemical industry material.
2, multi-purpose valve, while realizing existing electric control valve function, can increase and often open or the function of normal-closed electromagnetic valve.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the embodiment of the present invention;
Fig. 2 is middle A-A generalized section embodiment illustrated in fig. 1;
Fig. 3 is middle B-B generalized section embodiment illustrated in fig. 1;
Fig. 4 is middle Q enlarged diagram embodiment illustrated in fig. 1.
In Fig. 1-4: 1, valve chamber 2, spool 3, motor 4, motor pillar 5, return spring 6, semi-circular plate 7, slide bar head 8, valve core shaft 9, electromagnetic coil power line 10, control module 11, electrical machinery cover 12, terminal box 13, general power line 14, signaling line 15, little tooth 16 in semi-circular plate, the outer little tooth 17 of rotating shaft, slide bar 18, little spring 19, jack rod sleeve shaft bar 20, slide bar loop bar 21, permanent magnets 22, adjusting nut 23, slide bar fixing rod 24, magnetic block 25, electromagnetic coil 26, circular arc band.
Embodiment
In the embodiment shown in Fig. 1-4: a kind of open in usual or Normally closed type electric control valve, be divided into electric control valve open in usual and Normally closed type electric control valve, electric control valve open in usual and Normally closed type electric control valve all have two-way regulating function, namely when spool 2 is in any position, can on request or instruction make spool 2 open certain angle again or turn down certain angle.
When motor 3 receive signal make valve core shaft 8 overcome valve core shaft 8 overcoat return spring 5 power effect and make spool 2 open or close a certain desired location and make motor 3 have a power failure while, control module 10 provides signal makes electromagnetic coil 25 be energized, the magnetic field that electromagnetic coil 25 energising produces overcomes the attraction force of permanent magnets 21 pairs of magnetic blocks 24, make electromagnetic coil 25 and permanent magnets 21 repel each other and move right namely to move away from permanent magnets 21 direction, electromagnetic coil 25 moves away from permanent magnets 21 direction and pulls two slide bars 17 and compress the outer little spring 18 of slide bar 17, semi-circular plate 6 is driven to move right together, and make little tooth 15 in the semi-circular plate of semi-circular plate 6 be stuck on the outer little tooth 16 of rotating shaft, thus pinning valve core shaft 8 no longer rotates, now electromagnetic coil 25 is energized always and keeps pinning valve core shaft 8 and do not rotate, when motor 3 again receive signal make valve core shaft 8 overcome the return spring 5 power effect of valve core shaft 8 overcoat and make spool 2 open or close another desired location time, control module 10 is while giving motor 3 power transmission, provide signal cut electromagnetic coil 25 power supply, make electromagnetic coil 25 power-off and electromagnetic field disappears, now be enclosed within the spring-back force of the little spring 18 on slide bar 17 and the magnetic attraction of permanent magnets 21 attracting magnetic suction block 24, by semi-circular plate 6, slide bar 17, slide bar loop bar 20, electromagnetic coil 25 is moved to the left together with magnetic block 24, the magnetic block 24 of electromagnetic coil 25 both sides is held by permanent magnets 21 and to make in semi-circular plate little tooth 15 away from the outer little tooth 16 of rotating shaft, remove the locking of valve core shaft 8, thus make motor 3 that valve core shaft 8 can be driven to rotate and be with movable valve plug 2 to open or close another desired location, while spool 2 opens or closes another desired location and makes motor 3 have a power failure, control module 10 provides signal makes electromagnetic coil 25 again be energized, the magnetic field that electromagnetic coil 25 energising produces overcomes the attraction force of permanent magnets 21 pairs of magnetic blocks 24, make electromagnetic coil 25 and permanent magnets 21 repel each other and move right namely to move away from permanent magnets 21 direction, electromagnetic coil 25 moves away from permanent magnets 21 direction and pulls two slide bars 17 and compress the outer little spring 18 of slide bar 17, semi-circular plate 6 is driven to move right together, and make little tooth 15 in the semi-circular plate of semi-circular plate 6 be stuck on the outer little tooth 16 of rotating shaft, thus pinning valve core shaft 8 no longer rotates again, before no longer instruction energising do not received by rotation and motor 3 to valve core shaft 8, electromagnetic coil 25 keeps being energized always and keeps pinning valve core shaft 8 and do not rotate.
When the unexpected power-off of the general power supplying electric control valve, electromagnetic coil 25 power-off and electromagnetic field disappear, now be enclosed within the spring-back force of the little spring 18 on slide bar 17 and the magnetic attraction of permanent magnets 21 attracting magnetic suction block 24, by semi-circular plate 6, slide bar 17, slide bar loop bar 20, electromagnetic coil 25 is moved to the left together with magnetic block 24, the magnetic block 24 of electromagnetic coil 25 both sides is held by permanent magnets 21 and to make in semi-circular plate little tooth 15 away from the outer little tooth 16 of rotating shaft, remove the locking of valve core shaft 8, now because of the return spring 5 return active force by valve core shaft 8 overcoat, valve core shaft 8 rotation is returned to and often offers fixed position or normally closed desired location, often to offer fixed or normally closed setting be design setting when producing, instead of can change setting after dispatching from the factory.
Claims (4)
1. an electric control valve, it is open in usual or Normally closed type, the spool (2) comprising a valve chamber (1) and be arranged in valve chamber (1), spool (2) top is connected with a valve core shaft (8), the other end of valve core shaft (8) is connected with motor (3), the periphery cover of valve core shaft (8) near spool (2) one end has a return spring (5), the effect of return spring (5) spool (2) can be kept to be in close completely or full open position when not having External Force Acting, the very intensive little tooth of the vertical bar shape having one section of 3cm high outside the hemicycle that valve core shaft (8) is close to return spring (5), form the outer little tooth (16) of semicolumn rotating shaft, rotating shaft outer little tooth (16) outside corresponding position has a semi-circular plate (6), little tooth (15) in the very intensive semi-circular plate of the vertical bar shape that semi-circular plate (6) inner side has one section of 4cm high, in semi-circular plate, the outer little tooth (16) of little tooth (15) and semicolumn rotating shaft can match and engages, semi-circular plate (6) two ends are respectively connected with a slide bar (17) and form U-shape structure with semi-circular plate (6), slide bar (17) is through the hole at slide bar loop bar (20) two ends be fixed on jack rod sleeve shaft bar (19), then be connected with the slide bar fixing rod (23) away from semi-circular plate (6) side, valve core shaft (8) is in semi-circular plate (6), pass in the framework that two slide bars (17) and slide bar loop bar (20) form, slide bar (17) with the Placement of slide bar fixing rod (23) is: slide bar (17) is through the aperture at slide bar fixing rod (23) two ends, and fixed by two adjusting nuts (22) be screwed on slide bar (17) of slide bar fixing rod (23) both sides, by the distance regulating two adjusting nuts (22) that slide bar fixing rod (23) and semi-circular plate (6) two ends can be regulated, two slide bar (17) outsides between semi-circular plate (6) two ends and slide bar loop bar (20) are respectively overlapped and are had a little spring (18), it is characterized in that: jack rod sleeve shaft bar (19) is connected with the neutral position of slide bar loop bar (20) and makes slide bar loop bar (20) be fixed on jack rod sleeve shaft bar (19), away from valve core shaft (8) side, one piece of permanent magnets (21) is installed in the position of jack rod sleeve shaft bar (19) fixed slip bar loop bar (20), slide bar fixing rod (23) the central authorities position corresponding with permanent magnets (21) is provided with an electromagnetic coil (25), the both sides of electromagnetic coil (25) are respectively provided with one piece of magnetic block (24), make permanent magnets (21) just in time can hold two pieces of magnetic blocks (24), the magnetic direction that electromagnetic coil (25) energising produces is contrary with the magnetic direction of permanent magnets (21), the control module (10) controlling motor (3) controls electromagnetic coil (25) energising or power-off, when the unexpected power-off of the general power supplying electric control valve, electromagnetic coil (25) power-off and electromagnetic field disappear, now be enclosed within the spring-back force of the little spring (18) on slide bar (17) and the magnetic attraction of permanent magnets (21) attracting magnetic suction block (24), by semi-circular plate (6), slide bar (17), slide bar loop bar (20), electromagnetic coil (25) and magnetic block (24) are moved to the left together, the magnetic block (24) of electromagnetic coil (25) both sides is held by permanent magnets (21) and to make in semi-circular plate little tooth (15) away from the outer little tooth (16) of rotating shaft, remove the locking of valve core shaft (8), now because of return spring (5) the return active force by valve core shaft (8) overcoat, valve core shaft (8) rotation is returned to and often offers fixed position or normally closed desired location.
2. a kind of electric control valve as claimed in claim 1, it is characterized in that: make valve core shaft (8) overcome return spring (5) the power effect of valve core shaft (8) overcoat and make spool (2) open or close a certain desired location and while motor (3) is had a power failure when motor (3) receives signal, control module (10) provides signal makes electromagnetic coil (25) be energized, the magnetic field that electromagnetic coil (25) energising produces overcomes permanent magnets (21) to the attraction force of magnetic block (24), make electromagnetic coil (25) and permanent magnets (21) repel each other and move right namely to move away from permanent magnets (21) direction, electromagnetic coil (25) moves away from permanent magnets (21) direction and pulls two slide bars (17) and compress slide bar (17) outer little spring (18), semi-circular plate (6) is driven to move right together, and make little tooth (15) in the semi-circular plate of semi-circular plate (6) be stuck on the outer little tooth (16) of rotating shaft, thus pinning valve core shaft (8) is no longer rotated, now electromagnetic coil (25) is energized always and keeps pinning valve core shaft (8) and do not rotate, when motor (3) again receive signal make valve core shaft (8) overcome return spring (5) the power effect of valve core shaft (8) overcoat and make spool (2) open or close another desired location time, control module (10) is while giving motor (3) power transmission, provide signal cut electromagnetic coil (25) power supply, make electromagnetic coil (25) power-off and electromagnetic field disappears, now be enclosed within the spring-back force of the little spring (18) on slide bar (17) and the magnetic attraction of permanent magnets (21) attracting magnetic suction block (24), by semi-circular plate (6), slide bar (17), slide bar loop bar (20), electromagnetic coil (25) and magnetic block (24) are moved to the left together, the magnetic block (24) of electromagnetic coil (25) both sides is held by permanent magnets (21) and to make in semi-circular plate little tooth (15) away from the outer little tooth (16) of rotating shaft, remove the locking of valve core shaft (8), thus make motor (3) that valve core shaft (8) can be driven to rotate and be with movable valve plug (2) to open or close another desired location, while spool (2) opens or closes another desired location and makes motor (3) have a power failure, control module (10) provides signal makes electromagnetic coil (25) again be energized, the magnetic field that electromagnetic coil (25) energising produces overcomes permanent magnets (21) to the attraction force of magnetic block (24), make electromagnetic coil (25) and permanent magnets (21) repel each other and move right namely to move away from permanent magnets (21) direction, electromagnetic coil (25) moves away from permanent magnets (21) direction and pulls two slide bars (17) and compress slide bar (17) outer little spring (18), semi-circular plate (6) is driven to move right together, and make little tooth (15) in the semi-circular plate of semi-circular plate (6) be stuck on the outer little tooth (16) of rotating shaft, thus again pin valve core shaft (8) and no longer rotate, before no longer instruction energising do not received by rotation and motor (3) to valve core shaft (8), electromagnetic coil (25) keeps being energized always and keeps pinning valve core shaft (8) and do not rotate.
3. a kind of electric control valve as claimed in claim 1, is characterized in that: described electric control valve is ball valve or butterfly valve.
4. a kind of electric control valve as claimed in claim 1, it is characterized in that: electric control valve open in usual and Normally closed type electric control valve all have two-way regulating function, namely when spool (2) is in any position, can both on request or instruction make spool (2) open certain angle again or turn down certain angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310197957.5A CN103267160B (en) | 2013-05-26 | 2013-05-26 | Normally-opened and normally-closed type electric control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310197957.5A CN103267160B (en) | 2013-05-26 | 2013-05-26 | Normally-opened and normally-closed type electric control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103267160A CN103267160A (en) | 2013-08-28 |
| CN103267160B true CN103267160B (en) | 2015-02-18 |
Family
ID=49010804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310197957.5A Expired - Fee Related CN103267160B (en) | 2013-05-26 | 2013-05-26 | Normally-opened and normally-closed type electric control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103267160B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486730B (en) * | 2013-09-02 | 2016-06-01 | 中山市超人电器有限公司 | A kind of gas instantaneous water heater with automatic water-drainage antifreezing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179268B1 (en) * | 1998-04-21 | 2001-01-30 | Saturn Electronics & Engineering, Inc. | Proportional variable force solenoid control valve with segmented permanent magnet |
| CN201265667Y (en) * | 2008-08-27 | 2009-07-01 | 山西金色阳光环保工程有限公司 | Self-holding vacuum reversal valve |
| CN102022558B (en) * | 2010-11-27 | 2012-08-29 | 朱红春 | Controllable valve capable of being not automatically opened in powered state and being automatically closed without power |
| CN102705566B (en) * | 2012-07-02 | 2014-05-21 | 魏伯卿 | Zero differential pressure startup electromagnetic valve with micro-resistance, low power consumption and large diameter |
| CN203240059U (en) * | 2013-05-26 | 2013-10-16 | 魏伯卿 | Normally-open normally-close electric control device |
-
2013
- 2013-05-26 CN CN201310197957.5A patent/CN103267160B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103267160A (en) | 2013-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3119966B1 (en) | Bistable electromechanical magnetic locking device | |
| CN102762823B (en) | Camshaft adjuster | |
| CN103267160B (en) | Normally-opened and normally-closed type electric control valve | |
| CN203240059U (en) | Normally-open normally-close electric control device | |
| DE202007002760U1 (en) | Electromagnetic actuator drive for control valve and shut-off fittings, has drive connection formed via thrust- or pull-rod with axially movable part of electromagnetic drive unit | |
| CN205479623U (en) | Three way electromagnetic valve | |
| CN102305307B (en) | Linear servo device of hydraulic valve and operating method thereof | |
| CN107013730B (en) | Multi-rotation electro-hydraulic actuating mechanism | |
| WO2016206068A1 (en) | Automatic transfer switch and drive subsystem | |
| CN105179750A (en) | Three-way electrically operated valve | |
| CN104269965A (en) | Motor and rotation control method | |
| CN203880139U (en) | Tee-joint proportional valve with magnetic poles changeable | |
| CN204463973U (en) | A kind of rotary magnet device capable of reversing | |
| CN204375602U (en) | Door interlock under solid insulation ring main unit | |
| CN204942618U (en) | A kind of electric three-way valve | |
| CN205423739U (en) | Power transmission device | |
| CN105090595B (en) | Switching valve and its control method | |
| CN203250694U (en) | Low-loss anti-interference magnetic latching electromagnetic switch element | |
| CN205264546U (en) | Circuit breaker control motor mechanical interlocking device that is just reversing | |
| CN220792163U (en) | Three-way electromagnetic valve | |
| CN107276362A (en) | Drive device and windscreen wiper | |
| CN219512974U (en) | Remote control switch | |
| CN214889150U (en) | Electromagnetic valve capable of being opened instantly and closed instantly | |
| CN208518988U (en) | A kind of solenoid directional control valve | |
| CN202074103U (en) | Double-control solenoid valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20210526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |