CN208651767U - A kind of novel pneumatic solenoid valve - Google Patents
A kind of novel pneumatic solenoid valve Download PDFInfo
- Publication number
- CN208651767U CN208651767U CN201821080075.5U CN201821080075U CN208651767U CN 208651767 U CN208651767 U CN 208651767U CN 201821080075 U CN201821080075 U CN 201821080075U CN 208651767 U CN208651767 U CN 208651767U
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- iron core
- piston seat
- spring
- valve
- dynamic iron
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000009434 installation Methods 0.000 claims abstract description 28
- 230000003068 static effect Effects 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000030279 gene silencing Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009183 running Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a kind of novel pneumatic solenoid valves, including valve body, piston seat and rear cover, valve body is equipped with valve chamber, valve rod is equipped in valve chamber, plunger shaft is equipped in piston seat, plunger shaft is equipped with piston, accommodating cavity is equipped in rear cover, valve rod is fixedly connected with the piston, the valve rod other end protrudes into accommodating cavity, valve body is equipped with first row port, first working hole, air inlet, second working hole, second exhaust port and the first interface channel and the second interface channel, first interface channel is connected to the accommodating cavity of rear cover, control channel is equipped in piston seat, electromagnetic assembly is connected with by piston seat, electromagnetic assembly includes sleeve, dynamic iron core, static iron core and electromagnetic coil, installation cavity is equipped in dynamic iron core, installation cavity is equipped with seal plug and buffer head, static iron core is equipped with protrusion, piston seat is equipped with hand lever, hand lever protrudes into piston seat Interior and hand lever bottom offsets with dynamic iron core side wall.The utility model has the characteristics of small using noise, long service life.
Description
Technical field
The utility model relates to pneumatic element technical field, in particular to a kind of novel pneumatic solenoid valve.
Background technique
Solenoid valve is the industrial equipment applied to Electromagnetic Control, and direction, the stream of medium are adjusted in industrial control system
Amount, speed and other parameters, are the automatic foundamental elements for controlling flow direction or flow, belong to control device, have
There are a variety of runnings such as switch and opening variation.Solenoid valve can cooperate different circuits to realize expected control, and control
Precision and flexibility can guarantee.There are many kinds of solenoid valves, and different solenoid valves is played in the different location of control system to be made
With.
Two-position five-way valve is that solenoid valve is one such, well known.Its structure generally includes valve body, sets respectively
It is placed in the rear cover and valve seat at valve body both ends, valve chamber is formed in valve body, is movably set with valve rod in valve chamber, from rear on the arm of valve rod
To before set gradually spaced set have the first row port being connected to valve chamber, the first working hole, air inlet, the second working hole and
Second exhaust port is provided with several flat circles on valve rod, several nodes corresponding with flat circle, several nodes is provided in valve body
It is staggered with first row port, the first working hole, air inlet, the second working hole, after being equipped between the rear end and rear cover of valve rod
Piston is equipped with resetting-mechanism between rear piston and rear cover, secondary piston is equipped between the front end and valve seat of valve rod, and valve seat is respectively set
Have and is equipped with gas with valve seat with the control stomata of secondary piston corresponding matching, the gas port matched with control stomata, valve body
Body channel, air inlet are connected by gas passage with gas port, are provided on valve seat for controlling gas port and control stomata
The pilot head of conducting or truncation.When installation, air inlet is connected with work gas source, when pilot head is powered, gas port and control
It being switched between stomata, the compressed gas in air inlet successively enters in control stomata through gas passage, gas port and pilot head,
And then it is moved backward by secondary piston driving stem；When pilot head power-off, rear piston drives valve under the action of resetting-mechanism
Bar moves forward, to realize the commutation of gas circuit.
Then, noise is larger at work for above-mentioned two-position five-way valve, pilot head wear when in use it is larger, service life compared with
It is short and not easy to overhaul.
Summary of the invention
In view of the deficiencies of the prior art and defect, a kind of novel pneumatic solenoid valve is provided, has small using noise, use the longevity
Order long feature.
To achieve the above object, the utility model provides following technical scheme.
A kind of novel pneumatic solenoid valve, including valve body, piston seat and rear cover, valve body one end are connected to rear cover, and valve body is another
End is connected to piston seat, and valve chamber is equipped in valve body, and valve rod is equipped in valve chamber, and plunger shaft, activity in plunger shaft are equipped in piston seat
Piston is installed, is equipped with accommodating cavity in rear cover, valve rod one end, which is protruded into plunger shaft, to be fixedly connected with the piston, and the valve rod other end protrudes into
In the accommodating cavity of rear cover, valve body is equipped with first row port, the first working hole, air inlet, the second working hole being connected to valve chamber
And second exhaust port, valve body are equipped with the first interface channel and the second interface channel being connected to air inlet, the first connection is logical
Road one end is connected to air inlet, and the first interface channel other end is connected in the accommodating cavity of rear cover, is equipped in piston seat by second
The control channel that interface channel is connected to plunger shaft, electromagnetic assembly is connected with by piston seat, and electromagnetic assembly includes sleeve, dynamic iron
Core, static iron core and electromagnetic coil, electromagnetic coil are sheathed on outside sleeve, and sleeve is fixedly connected with piston seat, and static iron core is set to sleeve
Interior, dynamic iron core one end is located in sleeve, and the dynamic iron core other end stretches out in outside sleeve, and the first bullet is equipped between dynamic iron core and sleeve
Spring, dynamic iron core is interior to be equipped with installation cavity, and one end that installation cavity stretches out in outside sleeve is embedded with seal plug, and the other end is set in installation cavity
There is buffer head, second spring and third spring are equipped in installation cavity, second spring one end, which is supported, is set to seal plug, and second spring is another
One end, which is supported, to be set in installation cavity, and third spring one end, which supports, is set to buffer head, and the third spring other end, which supports, to be set in installation cavity, sealing
Plug offsets under the action of second spring with control channel to block control channel, and static iron core is equipped with to be cooperated with buffer head
Protrusion, the gas vent for being connected to installation cavity with plunger shaft is additionally provided in dynamic iron core, piston seat is equipped with hand lever, hand lever
Bottom is tapered, and hand lever protrudes into piston seat and hand lever bottom offsets with dynamic iron core side wall, between hand lever and piston seat
Equipped with the 4th spring.
Further, rear cover is fixedly connected with the valve body by screw.
Further, sealing ring is equipped between rear cover and valve body.
Further, electromagnetic coil is equipped with terminal box.
Further, the exhaust passage being connected to plunger shaft is additionally provided on static iron core.
Further, exhaust passage, which closes on, is equipped with silencing cotton in one end of dynamic iron core.
Further, guide post is equipped in accommodating cavity, valve rod is equipped with the guide groove cooperated with guide post.
The utility model has the following beneficial effects: the solenoid valve of the utility model, when electromagnetic coil is in off-position, into
Port air inlet, gas enter in the accommodating cavity of rear cover through the first interface channel, and gas push valve rod moves right, at this time air inlet
Be connected between the first working hole, be connected between the second working hole and second exhaust port, the first working hole and first row port it
Between, blocked by valve rod between air inlet and the second working hole, inlet charge, gas enters valve chamber through air inlet, then through the
The discharge of one exhaust outlet works, and when exhaust, gas enters valve chamber through second exhaust port, then is vented through the second air inlet, when needing
When the outlet of gas is switched to the second working hole by the first working hole, electromagnetic coil, which is powered, generates magnetic force, and dynamic iron core exists
It is mobile to static iron core that the first spring is compressed under the action of magnetic force, seal plug is separated with control channel, is no longer sealed to control channel
Stifled, gas enters in plunger shaft through the second interface channel, control channel at this time, when air inlet gas through the first interface channel and
Second interface channel respectively enters that accommodating cavity is identical with the air pressure in plunger shaft, since the face area of piston is greater than the end of valve rod
Face area, air pressure in plunger shaft or pushes piston to be moved to the left, and piston driving valve rod is moved to the left, at this time the first working hole with
It is connected between first row port；Be connected between air inlet and the second working hole, between air inlet and the first working hole, second work
It is blocked between mouth and second exhaust port by valve rod, inlet charge, gas enters valve chamber through air inlet, then through second exhaust port
Discharge works, and when exhaust, gas enters valve chamber through first row port, then is vented through the first air inlet, to realize switching
Exhaust outlet, by being equipped with buffer head in installation cavity, when dynamic iron core is mobile to static iron core, the first protrusion with static iron core of buffer head
Portion, which offsets, realizes buffering, to alleviate the shock between dynamic iron core and static iron core, to reduce noise, moreover it is possible to reduce dynamic iron core
Abrasion, reduces the failure rate of solenoid valve, increases service life, and hand lever furthermore is arranged by piston seat, works as electromagnetic coil
When can not be powered, press hand lever by lower, hand lever compresses the 4th spring and moves down, when hand lever is mobile bottom pyramidal face with
Dynamic iron core offsets, so that dynamic iron core be pushed to compress, the first spring is mobile to static iron core, and seal plug is separated with control channel, no longer
Control channel is blocked, thus manual switching exhaust outlet, and maintenance is convenient when solenoid valve is broken down.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is partial enlargement diagram at A in Fig. 1 of the utility model.
In figure, 1. valve bodies；2. piston seat；3. rear cover；4. valve chamber；5. valve rod；6. plunger shaft；7. piston；8. accommodating cavity；9.
First row port；10. air inlet；11. second exhaust port；12. the first interface channel；13. the second interface channel；14. control is logical
Road；15. sleeve；16. dynamic iron core；17. static iron core；18. electromagnetic coil；19. the first spring；20. installation cavity；21. seal plug；
22. buffer head；23. second spring；24. protrusion；25. gas vent；26. third spring；27. hand lever；28. the 4th spring；
29. sealing ring；30. terminal box；31. exhaust passage；32. guide post；33. guide groove.
Specific embodiment
The utility model is further illustrated in conjunction with attached drawing.
Referring to Fig. 1 to a kind of novel pneumatic solenoid valve shown in Fig. 2, including valve body 1, piston seat 2 and rear cover 3, valve body 1
One end is connected to rear cover 3, and rear cover 3 is fixedly connected by screw with valve body 1, and sealing ring 29 is equipped between rear cover 3 and valve body 1, with
Guarantee that leakproofness is good, gas is not easy to leak, and 1 other end of valve body is connected to piston seat 2, valve chamber 4 is equipped in valve body 1, in valve chamber 4
Equipped with valve rod 5, it is equipped with plunger shaft 6 in piston seat 2, piston 7 is movably installed in plunger shaft 6, is equipped with accommodating cavity 8, valve in rear cover 3
5 one end of bar is protruded into plunger shaft 6 and is fixedly connected with piston 7, and 5 other end of valve rod protrudes into the accommodating cavity 8 of rear cover 3, sets on valve body 1
There are the first row port 9 being connected to valve chamber 4, the first working hole, air inlet 10, the second working hole and second exhaust port 11, valve
Body 1 is equipped with the first interface channel 12 and the second interface channel 13 being connected to air inlet 10, and 12 one end of the first interface channel connects
It is connected to air inlet 10,12 other end of the first interface channel is connected in the accommodating cavity 8 of rear cover 3, is equipped in piston seat 2 and is connected second
Connect the control channel 14 that road 13 is connected to plunger shaft 6.
Electromagnetic assembly is connected with by piston seat 2, electromagnetic assembly includes sleeve 15, dynamic iron core 16, static iron core 17 and electromagnetic wire
Circle 18, electromagnetic coil 18 is sheathed on outside sleeve 15, and electromagnetic coil 18 is equipped with terminal box 30, so that structure is more compact, set
Cylinder 15 is fixedly connected with piston seat 2, and static iron core 17 is set in sleeve 15, and 16 one end of dynamic iron core is located in sleeve 15, dynamic iron core 16
The other end stretches out in outside sleeve 15, is formed with gap between dynamic iron core 16 and sleeve 15,
It is equipped with the first spring 19 between dynamic iron core 16 and sleeve 15, is equipped with installation cavity 20 in dynamic iron core 16, installation cavity 20 is stretched
It is embedded with seal plug 21 for one end outside sleeve 15, the other end is equipped with buffer head 22 in installation cavity 20, sets in installation cavity 20
There are second spring 23 and third spring 26,23 one end of second spring, which is supported, is set to seal plug 21, and 23 other end of second spring is supported and set
In in installation cavity 20,26 one end of third spring is supported set on buffer head 22, and 26 other end of third spring, which supports, to be set in installation cavity 20, close
Block head 21 offsets under the action of second spring 23 with control channel 14 to block control channel 14, and static iron core 17 is equipped with
The protrusion 24 cooperated with buffer head 22 is additionally provided with the gas vent 25 for being connected to installation cavity 20 with plunger shaft 6 in dynamic iron core 16, work
Obturating plug 2 is equipped with hand lever 27, and 27 bottom of hand lever is tapered, hand lever 27 protrude into piston seat 2 and 27 bottom of hand lever with
16 side wall of dynamic iron core offsets, and the 4th spring 28 is equipped between hand lever 27 and piston seat 2.
The solenoid valve of the utility model, when electromagnetic coil 18 is in off-position, 10 air inlet of air inlet, gas is through first
Interface channel 12 enters in the accommodating cavity 8 of rear cover 3, and gas push valve rod 5 moves right, at this time air inlet 10 and the first working hole
Between be connected to, be connected between the second working hole and second exhaust port 11, between the first working hole and first row port 9, air inlet
10 and second are blocked by valve rod 5 between working hole, and 10 air inlet of air inlet, gas enters valve chamber 4 through air inlet 10, then through first
The discharge of exhaust outlet 9 works, and when exhaust, gas enters valve chamber 4 through second exhaust port 11, then is vented through the second air inlet 10,
When needing the outlet of gas switching to the second working hole by the first working hole, electromagnetic coil 18, which is powered, generates magnetic force, moves
Iron core 16 compresses the first spring 19 to the movement of static iron core 17 under the magnetic force, and seal plug 21 is separated with control channel 14,
No longer control channel 14 is blocked, gas enters in plunger shaft 6 through the second interface channel 13, control channel 14 at this time, works as air inlet
The gas of mouth 10 respectively enters the air pressure phase in accommodating cavity 8 and plunger shaft 6 through the first interface channel 12 and the second interface channel 13
Together, since the face area of piston 7 is greater than the face area of valve rod 5, air pressure or promotion piston 7 in plunger shaft 6 are moved to the left,
Piston 7 is moved to the left with ovable valve stem 5, and guide post 32 is equipped in accommodating cavity 8, and valve rod 5 is equipped with the guiding cooperated with guide post 32
Slot 33, when valve rod 5 is mobile, guide groove 33 limits the direction of motion of guide pad, so that valve rod 5 moves steadily, the first work at this time
Make to be connected between mouth and first row port 9；Be connected between air inlet 10 and the second working hole, air inlet 10 and the first working hole it
Between, blocked by valve rod 5 between the second working hole and second exhaust port 11,10 air inlet of air inlet, gas enters through air inlet 10
Valve chamber 4, then work through the discharge of second exhaust port 11, when exhaust, gas enters valve chamber 4 through first row port 9, then through first
Air inlet 10 is vented, so that switching exhaust outlet is realized, by being equipped with buffer head 22 in installation cavity 20, as 16 Xiang Jingtie of dynamic iron core
When core 17 is mobile, buffer head 22 first offsets with the protrusion 24 of static iron core 17 and realizes buffering, to alleviate dynamic iron core 16 and quiet iron
Shock between core 17, to reduce noise, moreover it is possible to which the abrasion for reducing dynamic iron core 16 reduces the failure rate of solenoid valve, increases
Service life, when buffer head 22 is mobile, buffer head 22 can compress the gas in installation cavity 20 through gas vent 25, dynamic iron core 16
Gap between sleeve 15, control channel 14 enter in plunger shaft 6, can be convenient for buffer head 22 by the way that gas vent 25 is arranged
It is moved in plunger shaft 6, so that buffering effect is better.
Furthermore hand lever 27 is arranged by piston seat 2, when electromagnetic coil 18 can not be powered, presses hand lever 27 by lower,
Hand lever 27 compresses the 4th spring 28 and moves down, and bottom pyramidal face offsets with dynamic iron core 16 when hand lever 27 is mobile, to push away
Dynamic dynamic iron core 16 compresses the first spring 19 to the movement of static iron core 17, and seal plug 21 is separated with control channel 14, no longer to control
Channel 14 blocks, thus manual switching exhaust outlet, and maintenance is convenient when solenoid valve is broken down, when unclamping hand lever 27
When, hand lever 27 resets under the action of the 4th spring 28, and dynamic iron core 16 resets logical with control under the action of the first spring 19
Road 14 offsets.
The exhaust passage 31 being connected to plunger shaft 6 is additionally provided on static iron core 17, exhaust passage 31 is connected to the external world, works as piston
7 when moving right, and electromagnetic coil 18 is in off-position at this time, the gas in plunger shaft 6 through control channel 14, dynamic iron core 16 with
Gap, exhaust passage 31 between sleeve 15 are discharged outside to, and exhaust passage 31, which closes in one end of dynamic iron core 16 to be equipped with, to disappear
Sound cotton, reduces exhaust noise, and when piston 7 is moved to the left, electromagnetic coil 18 is in energized state at this time, dynamic iron core 16 with it is quiet
Iron core 17 offsets, and the protrusion 24 of buffer head 22 and static iron core 17 offsets to seal exhaust passage 31 at this time, avoids controlling
The air that mouth is entered is discharged through exhaust outlet, and when the protrusion 24 of buffer head 22 and static iron core 17 offsets, silencing cotton energy
Enough reduce collides generated noise.
The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range
The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.
Claims (7)
1. a kind of novel pneumatic solenoid valve, including valve body (1), piston seat (2) and rear cover (3), after valve body (1) one end is connected to
It covering (3), valve body (1) other end is connected to piston seat (2), is equipped with valve chamber (4) in valve body (1), valve rod (5) are equipped in valve chamber (4),
Plunger shaft (6) are equipped in piston seat (2), are movably installed with piston (7) in plunger shaft (6), are equipped with accommodating cavity (8) in rear cover (3),
Valve rod (5) one end is protruded into plunger shaft (6) and is fixedly connected with piston (7), and valve rod (5) other end protrudes into the accommodating cavity of rear cover (3)
(8) in, it is characterised in that: valve body (1) is equipped with first row port (9), the first working hole, air inlet being connected to valve chamber (4)
(10), the second working hole and second exhaust port (11), valve body (1) are equipped with the first interface channel being connected to air inlet (10)
(12) it is connected to air inlet (10) with the second interface channel (13), the first interface channel (12) one end, the first interface channel (12)
The other end is connected in the accommodating cavity (8) of rear cover (3), is equipped in piston seat (2) by the second interface channel (13) and plunger shaft (6)
The control channel (14) of connection, is connected with electromagnetic assembly by piston seat (2), electromagnetic assembly include sleeve (15), dynamic iron core (16),
Static iron core (17) and electromagnetic coil (18), electromagnetic coil (18) are sheathed on sleeve (15) outside, and sleeve (15) and piston seat (2) are fixed
Connection, static iron core (17) are set in sleeve (15), and dynamic iron core (16) one end is located in sleeve (15), and dynamic iron core (16) other end is stretched
Outside for sleeve (15), the first spring (19) are equipped between dynamic iron core (16) and sleeve (15), installation is equipped in dynamic iron core (16)
Chamber (20), installation cavity (20) stretch out in the one end of sleeve (15) outside and are embedded with seal plug (21), installation cavity (20) interior other end
Equipped with buffer head (22), it is equipped with second spring (23) and third spring (26) in installation cavity (20), second spring (23) one end is supported
Set on seal plug (21), second spring (23) other end, which supports, to be set in installation cavity (20), and third spring (26) one end is supported and is set to
Buffer head (22), third spring (26) other end, which supports, to be set in installation cavity (20), and seal plug (21) is in second spring (23)
Effect is lower and control channel (14) offsets to block control channel (14), and static iron core (17) is equipped with to be cooperated with buffer head (22)
Protrusion (24), be additionally provided with the gas vent (25) for being connected to installation cavity (20) with plunger shaft (6), piston seat in dynamic iron core (16)
(2) hand lever (27) are equipped with, hand lever (27) bottom is tapered, and hand lever (27) protrudes into piston seat (2) and hand lever
(27) bottom offsets with dynamic iron core (16) side wall, and the 4th spring (28) is equipped between hand lever (27) and piston seat (2).
2. a kind of novel pneumatic solenoid valve according to claim 1, it is characterised in that: rear cover (3) passes through screw and valve body
(1) it is fixedly connected.
3. a kind of novel pneumatic solenoid valve according to claim 1, it is characterised in that: it is set between rear cover (3) and valve body (1)
There are sealing ring (29).
4. a kind of novel pneumatic solenoid valve according to claim 1, it is characterised in that: electromagnetic coil (18) is equipped with wiring
Box (30).
5. a kind of novel pneumatic solenoid valve according to claim 1, it is characterised in that: it is additionally provided with and lives on static iron core (17)
Fill in the exhaust passage (31) of chamber (6) connection.
6. a kind of novel pneumatic solenoid valve according to claim 1, it is characterised in that: exhaust passage (31) closes on dynamic iron core
(16) silencing cotton is installed in one end.
7. a kind of novel pneumatic solenoid valve according to claim 1, it is characterised in that: guide post is equipped in accommodating cavity (8)
(32), valve rod (5) is equipped with the guide groove (33) cooperated with guide post (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821080075.5U CN208651767U (en) | 2018-07-09 | 2018-07-09 | A kind of novel pneumatic solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821080075.5U CN208651767U (en) | 2018-07-09 | 2018-07-09 | A kind of novel pneumatic solenoid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208651767U true CN208651767U (en) | 2019-03-26 |
Family
ID=65783340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821080075.5U Active CN208651767U (en) | 2018-07-09 | 2018-07-09 | A kind of novel pneumatic solenoid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208651767U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806686A (en) * | 2019-03-28 | 2019-05-28 | 赵澄 | A kind of industrial air cleaning equipment |
| CN110332169A (en) * | 2019-08-14 | 2019-10-15 | 广东明晖气动科技有限公司 | Air operated reversing valve |
| CN111288205A (en) * | 2020-04-08 | 2020-06-16 | 鞍山电磁阀有限责任公司 | Recoil type electromagnetic valve and electro-hydraulic control system |
-
2018
- 2018-07-09 CN CN201821080075.5U patent/CN208651767U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806686A (en) * | 2019-03-28 | 2019-05-28 | 赵澄 | A kind of industrial air cleaning equipment |
| CN109806686B (en) * | 2019-03-28 | 2021-04-30 | 山西蓝盛益通环保科技有限公司 | Industrial air purification equipment |
| CN110332169A (en) * | 2019-08-14 | 2019-10-15 | 广东明晖气动科技有限公司 | Air operated reversing valve |
| CN110332169B (en) * | 2019-08-14 | 2024-04-02 | 广东明晖气动科技有限公司 | Pneumatic reversing valve |
| CN111288205A (en) * | 2020-04-08 | 2020-06-16 | 鞍山电磁阀有限责任公司 | Recoil type electromagnetic valve and electro-hydraulic control system |
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