CN209325146U - The plug and core assembly of electric controlled pneumatic control device - Google Patents
The plug and core assembly of electric controlled pneumatic control device Download PDFInfo
- Publication number
- CN209325146U CN209325146U CN201822275398.6U CN201822275398U CN209325146U CN 209325146 U CN209325146 U CN 209325146U CN 201822275398 U CN201822275398 U CN 201822275398U CN 209325146 U CN209325146 U CN 209325146U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve core
- plug
- core case
- seal
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The utility model provides the plug and core assembly of a kind of electric controlled pneumatic control device, including core assembly and seal plug；Core assembly includes spool, valve core case, valve core spring；For elastic conjunction in body cavity, spool is set in valve core case inner cavity, can slide valve core case；The air inlet for being connected to inlet chamber Yu valve core case inner cavity is equipped in the middle part of valve core case；The spool guide surface matched, valve core case guide surface are respectively equipped in valve core outer surface and valve core case intracavity inner surface；Spool exhaust passage is equipped among spool, for linking up the discharge chamber and control chamber at core assembly both ends；One end of spool sets seal spool end face；The spool other end is equipped with block machine, is equipped with seal spool pad towards valve core case side in block machine, the valve core case other end sets the valve core case seal face matched with seal spool pad；The spool other end offsets with valve core spring one end.The utility model structure is simple, at low cost；With pressure holding function, no need to consume a large amount of compressed airs.
Description
Technical field
The utility model relates to automobile technical field, especially a kind of plug of electric controlled pneumatic control device and spool group
Part.
Background technique
As emission regulation is increasingly strict, the application of automatically controlled by-passing valve booster and electric control EGR valve system on the engine
It is more and more extensive；Accurate control supercharger bypass valve or EGR valve aperture are the developing direction of the relevant technologies.
Automatically controlled gas drive device and motor double leval jib driving device are current mainstream technology, automatically controlled gas drive device arrangement spirit
It is living, be affected by temperature it is small, it is at low cost；It is high that motor double leval jib driving device controls precision, but structure arranges and by temperature environment
It influences greatly, it is at high cost, it needs to cooperate cooling device.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of electric controlled pneumatic control device
Used in plug and core assembly, core assembly structure is simple, at low cost, has pressure holding function, the compressed air of consumption
It is few.The technical solution adopted in the utility model is:
A kind of plug and core assembly of electric controlled pneumatic control device, including core assembly and seal plug；
The core assembly for elastic conjunction in body cavity, body cavity can be divided into three it is independent of each other
Chamber: inlet chamber, discharge chamber, control chamber；
Core assembly includes spool, valve core case, valve core spring；For elastic conjunction in body cavity, spool is set valve core case
In valve core case inner cavity, it can slide；The air inlet for being connected to inlet chamber Yu valve core case inner cavity is equipped in the middle part of valve core case；
The spool guide surface matched, valve core case guiding are respectively equipped in valve core outer surface and valve core case intracavity inner surface
Face；
Spool exhaust passage is equipped among spool, for linking up the discharge chamber and control chamber at core assembly both ends；Spool
One end sets seal spool end face, for cooperating with the seal plug in discharge chamber；The other end of spool is for leading to control chamber, spool
The other end is equipped with block machine, is equipped with seal spool pad towards valve core case side in block machine, the valve core case other end is set and seal spool pad
The valve core case seal face matched；The spool other end offsets with valve core spring one end, and the valve core spring other end is for resisting control
Bottom of chamber portion processed；
The first sealing ring of valve core case and valve are respectively set on the valve core case inner and outer wall of the air inlet side of valve core case
Valve core case third sealing ring is arranged in the second sealing ring of core print seat on the valve core case outer wall of the air inlet other side of valve core case；
Seal plug is used to close one end of the spool.
Further, spool guide surface, valve core case guide surface are located at the side that core assembly deviates from control chamber.
Further, it is equipped with plug pad towards one end of spool on seal plug, for closing one end of the spool.
Further, air hole is equipped in the seal plug on rear side of plug pad.
Further, slot being padded towards one end of spool setting plug in seal plug, plug pad is mounted in plug pad slot,
It is fixed by vulcanization.
Alternatively, padding slot towards one end of spool setting plug in seal plug, seal plug leading edge is equipped with to in-flanges, blocks up
The headrest is mounted in plug pad slot, by compressing to in-flanges.
Further, spool is fixed on towards setting seal spool ring recess, seal spool pad on valve core case side in block machine
In seal groove, fixed by vulcanization.
Alternatively, seal spool pad is fixed on the step surface towards valve core case of spool block machine by vulcanization.
Further, sleeve is set inside one end of valve core case, the inner surface of sleeve sets valve core case guide surface.
Utility model has the advantages that
1) core assembly structure is simple, at low cost.
2) there is pressure holding function, no need to consume a large amount of compressed airs.
3) gasket, plug pad are fixed in a manner of vulcanizing, and will not fall off.
4) spool and valve core case good manufacturability, it is easy to process.
5) spool stroke is small, and flow is big, and applicable range is wide.
Detailed description of the invention
Fig. 1 is the electric controlled pneumatic control schematic device of the utility model.
Fig. 2 just sets appearance diagram for the utility model.
Fig. 3 is the inversion appearance diagram of the utility model.
Fig. 4 is the core assembly schematic diagram of the utility model.
Fig. 5 is the seal plug first embodiment schematic diagram of the utility model.
Fig. 6 is the valve core case second embodiment schematic diagram of the utility model.
Fig. 7 is that the spool of the utility model and seal spool pad second embodiment schematic diagram.
Fig. 8 is the seal plug second embodiment schematic diagram of the utility model.
Specific embodiment
Below with reference to specific drawings and examples, the utility model is described in further detail.
A kind of electric controlled pneumatic control device 1, as shown in Figure 1, comprising: proportion magnetic valve component 2, core assembly 3, valve body 4,
Valve deck 5, microcontroller 6, seal plug 7, pressure sensor 8, exhaust valve 9；
Inner cavity 44 is equipped with inside the valve body 4, the outside of inner cavity 44 is equipped with microcontroller chamber 13；
3 elastic conjunction of core assembly divides body cavity 44 for three chambers independent of each other: inlet chamber in body cavity 44
38, discharge chamber 39, control chamber 40；In the power-off state, inlet chamber 38 is isolated from each other with control chamber 40, inlet chamber 38 and discharge chamber
39 are isolated from each other；
The inlet chamber 38 is located at 3 middle part outside of core assembly, and the air inlet 41 being arranged on inlet chamber 38 and valve body communicates；
The air inlet 41 is located at the valve body back side, visible in Fig. 3；The discharge chamber 39, control chamber 40 are located at the two of core assembly 3
End；The exhaust outlet 42 being arranged on the discharge chamber 39 of 3 one end of core assembly and valve body 4 communicates, and exhaust valve 9 is installed on exhaust outlet 42,
Exhaust valve 9 can guarantee normal exhaust, and prevent foreign from entering body cavity；Exhaust valve 9 is located at 4 bottom of valve body；Spool
The control mouth 43 being arranged in the control chamber 40 of 3 other end of component and valve body 4 communicates, which is located at valve body front, in Fig. 2
It can be seen that；
As shown in Figure 1 and Figure 4, core assembly 3 includes spool 31, valve core case 32, valve core spring 33；32 interference of valve core case dress
Assigned in body cavity 44, spool 31 is set in the 32g of valve core case inner cavity, can slide；In the middle part of valve core case 32 be equipped with for be connected into
The air inlet 32f of air cavity 38 and valve core case inner cavity 32g；
Spool guide surface 31b, the spool matched is respectively equipped in 31 outer surface of spool and valve core case inner cavity 32g inner surface
Seat guide surface 32b；Preferably, spool guide surface 31b, valve core case guide surface 32b are located at one that core assembly deviates from control chamber 40
Side, so that inlet chamber 38 is smooth to 40 air inlet of control chamber when air inlet；
Spool exhaust passage 31d is equipped among spool 31, for linking up discharge chamber 39 and control chamber 40；One end of spool 31
Positioned at discharge chamber 39, which sets seal spool end face 31a, for cooperating with seal plug 7；The other end of spool 31 is located at control
Chamber 40,31 other end of spool are equipped with block machine 31e, are equipped with seal spool pad 37, valve core case towards 32 side of valve core case in block machine 31e
32 other ends set the valve core case seal face 32a matched with seal spool pad 37；Valve core spring 33 is located in control chamber 40, valve
31 other end of core offsets with 33 one end of valve core spring, and 33 other end of valve core spring resists 40 bottom of control chamber；In an example,
Valve core seal ring can be fixed on towards setting seal spool ring recess 31c, seal spool pad 37 on valve core case side in block machine 31e
In slot 31c, fixed by vulcanization；
The first sealing ring of valve core case is respectively set on the valve core case inner and outer wall of the side air inlet 32f of valve core case 32
34 and the second sealing ring of valve core case 35, valve core case the is set on the valve core case outer wall of the other side air inlet 32f of valve core case 32
Three sealing rings 36；The first sealing ring of valve core case 34, the second sealing ring of valve core case 35, valve core case third sealing ring 36 are separately positioned on
In three valve core case seal grooves 32d, 32c, 32e；
Sealing between inlet chamber 38 and discharge chamber 39 is achieved by the following way: the first sealing ring of valve core case 34, valve core case
Two sealing rings 35；
Sealing between inlet chamber 38 and control chamber 40 is achieved by the following way: valve core case third sealing ring 36, valve core case 32
Seal spool pad 37 on the valve core case seal face 32a and spool block machine of the other end matches；
Sealing between control chamber 40 and discharge chamber 39 is achieved by the following way: on seal spool end face 31a and seal plug 7
Plug pad 16 match and (be bonded both when air inlet and pressure maintaining, separation both when exhaust)；
Proportion magnetic valve component 2 is inserted into body cavity, is located at 39 side of discharge chamber, and close the discharge chamber 39；
Seal plug 7 is set in discharge chamber 39；Proportion magnetic valve component 2 is controlled by microcontroller 6, can push dynamic sealing by setting
Plug 7 is to block one end of spool 31；
Proportion magnetic valve component 2 specifically includes coil 21, static gag bit 22, moving armature 23, mandril 24, return spring 25；Than
Example electromagnetic valve component 2 is inserted into body cavity and carries out axial restraint by pin 28；Static gag bit 22 is resisted against on valve core case 32, right
Its axially position；22 front end periphery of static gag bit is equipped with sealing ring, so that discharge chamber 39 is isolated from the outside world；Mandril 24 passes through static gag bit
22, seal plug 7 is sleeved on 24 front end of mandril；Moving armature 23 is fixed together with 24 rear portion of mandril, and return spring 25 is set in
On mandril 24, both ends offset with moving armature 23 and static gag bit 22 respectively；22 front of static gag bit is equipped with opening so that 39 He of discharge chamber
Exhaust outlet 42 is connected to；Coil 21 is located at 22 periphery of static gag bit；
As shown in figure 5, being equipped with plug pad 16 towards one end of spool 31, plug pad 16 is for closing on seal plug 7
One end of the spool 31；Slot 7a is padded towards one end of spool 31 setting plug in seal plug 7, plug pad 16 is mounted on plug
It pads in slot 7a, is fixed by vulcanization；Air hole 7c, 7b are equipped in seal plug on rear side of plug pad, so that plug pad 16 assembles
When, gas can be discharged behind, guarantee the accurate fixation of plug pad 16 and plug pad slot 7a；
Another embodiment of valve core case 32 inside one end of valve core case 32 as shown in fig. 6, set sleeve 17, sleeve 17 and valve
Core print seat 32 is connected together by supersonic welding, and the inner surface of sleeve 17 sets valve core case guide surface 32b；The benefit of such structure is,
The manufacture difficulty of valve core case is reduced, and 17 structure of sleeve is relatively easy, valve core case guide surface 32b easy to process；
Another fixed form of spool 31 and seal spool pad 37 is as shown in fig. 7, seal spool pad 37 is fixed on spool
On the step surface towards valve core case 32 of block machine 31e, such as pass through vulcanization fixation；
Another embodiment of seal plug 7 and plug pad 16 as shown in figure 8,7 leading edge of seal plug is equipped with to in-flanges 7d,
Plug pad 16 is mounted in plug pad slot 7a, and by compressing to in-flanges 7d, advantage is simple process, does not have to vulcanization.
The microcontroller 6 is mounted in microcontroller chamber 13, and pressure sensor 8 is housed on microcontroller 6；Pressure sensing
Device 8 protrudes into the sensor port 45 opened up on valve body 4, and closes the sensor port, specifically can be in the protrusion of pressure sensor
The sealing that sealing ring realizes sensor port is arranged in portion；Pressure sensor 8 is able to detect 40 pressure of control chamber；
Valve deck 5 is connected by screw on valve body 4, closes the microcontroller chamber 13；Microcontroller 6 is solid by screw
It is scheduled on the inside on valve deck 5；
An air relief cock 10 is additionally provided on valve body 4, which is blocked in an opening of microcontroller chamber；Work as control
When gas pressure is too big in chamber 40 processed, there may be partial pressure gas leakage to enter microcontroller chamber 13, in microcontroller chamber 13
Pressure increases, and can be deflated by air relief cock 10.
Communication interface 11 is housed on microcontroller 6；Wireless interface or wireline interface, this example can be used in the communication interface 11
In, using CAN communication interface, CAN communication interface is mounted on valve deck 5；CAN communication interface 11 can pass through harness and engine
ECU is connected；Proportion magnetic valve component 2 is by 6 drive control of microcontroller；
In an example below, air inlet 41 is connected with compressed air source outward, inwardly communicates with inlet chamber 38, control
Donsole 43 is connected with exhaust gas by-pass valve diaphragm valve actuator outward, inwardly communicates with control chamber 40；Adjust the pressure in control chamber 40
Power is the output displacement of controllable by-passing valve diaphragm valve actuator, i.e., the aperture of adjustable exhaust gas by-pass valve；
Proportion magnetic valve component 2 is based on PWM control principle, by the PWM drive signal for adjusting proportion magnetic valve component 2
For duty ratio, it can be achieved that controlling the adjusting of cavity pressure, any displacement output of realization 0~3mm of diaphragm valve actuator makes controlled valve valve
Core is able to maintain different apertures, to control different throughputs；
When engine is shut down, proportion magnetic valve component 2 is in off-position, and moving armature 23 is under the action of return spring 25
Far from static gag bit 22, so that seal plug 7 be driven to be detached from spool 31, spool is pressed on valve core case 32 by valve core spring 33；At this point,
Inlet chamber 38 is blocked with control chamber 40 by spool, and compressed air is sealed in inlet chamber 38, and control chamber 40 passes through spool 31
Spool exhaust passage 31d communicated with discharge chamber 39, control cavity pressure is controlled valve and closes close to zero, aperture zero；
When engine operation condition changes,
Engine ECU calculates controlled valve target aperture according to actual condition, and is sent by CAN communication to microcontroller 6；
Microcontroller 6 calculates control chamber goal pressure according to controlled valve target aperture；For example, microcontroller can be according to preparatory
The controlled valve opening of calibration finds out the corresponding control chamber of the target opening value with the nominal data for controlling cavity pressure corresponding relationship
Goal pressure；
Microcontroller 6 is determined according to the control chamber current pressure that pressure sensor 8 is fed back needs to increase control cavity pressure also
It is to reduce control cavity pressure；Such as control chamber current pressure is less than control chamber goal pressure and then needs to increase；
If desired increase controlled valve opening, that is, need to increase control cavity pressure, microcontroller 6 is according to control chamber goal pressure
The duty ratio for needing the PWM drive signal of increased proportion magnetic valve component is determined with the pressure difference of current pressure；Control ratio electricity
The certain suction of generation of the electromagnetic valve component static gag bit 22 to moving armature 23, makes moving armature 23 will by mandril 24 and seal plug 7
Spool 31 opens certain distance；At this point, inlet chamber 38 is communicated with control chamber 40, and seal plug 7 blocks 31 one end of spool, control
Chamber 40 and discharge chamber 39 are then isolated by seal plug 7, and control cavity pressure rises；Controlled valve opening increases；
After pressure sensor 8 detects that control cavity pressure rising reaches goal pressure, microcontroller is according to control chamber mesh
Mark pressure determines the duty ratio (can suitably reduce duty ratio at this time) of a fixed PWM drive signal, so that proportion magnetic valve group
The electromagnetic force of part is less than valve core spring power, but is greater than control chamber gas to the pressure of seal plug；Spool 31 is again by valve core spring
33 push back on valve core case 32, and the electromagnetic force still is able to withstand on seal plug 7 on spool 31；At this point, inlet chamber 38, exhaust
Chamber 39, control chamber 40 are isolated each other, and control chamber is in state of pressure keeping；Control cavity pressure makes controlled valve maintain constant open
Degree；
If when state of pressure keeping, detecting control cavity pressure decline, it is understood that there may be seal plug does not block up tight spool and causes to control
Chamber leakage, then returning to microcontroller 6 according to control chamber goal pressure and the pressure difference of current pressure are determining needs increased ratio electricity
The duty ratio of the PWM drive signal of electromagnetic valve component；
If desired reduce controlled valve opening, that is, need to reduce control cavity pressure, microcontroller 6 is according to control chamber current pressure
The duty ratio of the PWM drive signal for the proportion magnetic valve component that pressure difference determination with goal pressure need to reduce；Proportion magnetic valve
The electromagnetic force of component decreases below control chamber gas to the pressure of seal plug, and the gas pressure in control chamber is by seal plug
It pushes open, seal plug and spool are detached from, and control intracavity gas enters discharge chamber, and the opening of exhaust valve 9 is pushed to be connected with the external world, from
And control chamber pressure reduction, it is controlled valve opening and reduces；
After control cavity pressure is reduced to goal pressure, the duty ratio of PWM drive signal is improved to certain value, so that ratio
The electromagnetic force of electromagnetic valve component is less than valve core spring power, but is greater than control chamber gas to the pressure of seal plug；Seal plug 7 is again
Secondary to withstand on spool 31, control chamber 40 is isolated with discharge chamber 39, and control chamber is in state of pressure keeping, and control cavity pressure makes controlled valve dimension
It holds in corresponding aperture；
When the duty ratio of the PWM drive signal of proportion magnetic valve component 2 is reduced to zero, that is, power off, proportion magnetic valve component 2
Electromagnetic force is zero, then return spring 25 drives seal plug 7 to return to initial position, and seal plug and spool disengage, control chamber 40
It is always maintained at and is connected to discharge chamber 39, gas is discharged extraneous by exhaust valve in control chamber 40, and control cavity pressure is close to zero, quilt
Control valve opening reverts to zero.
It should be noted last that the above specific embodiment is only to illustrate the technical solution of the utility model rather than limits
System, although the utility model is described in detail referring to example, those skilled in the art should understand that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (9)
1. a kind of plug and core assembly of electric controlled pneumatic control device, which is characterized in that including core assembly (3) and seal plug
Head (7)；
Body cavity (44), in body cavity (44), can be divided into three each other for elastic conjunction by the core assembly (3)
Independent chamber: inlet chamber (38), discharge chamber (39), control chamber (40)；
Core assembly (3) includes spool (31), valve core case (32), valve core spring (33)；Valve core case (32) for elastic conjunction in
Body cavity (44), spool (31) are set in valve core case inner cavity (32g), can slide；It is equipped in the middle part of valve core case (32) for connecting
The air inlet (32f) of logical inlet chamber (38) and valve core case inner cavity (32g)；
Spool guide surface (31b), the valve matched is respectively equipped in spool (31) outer surface and valve core case inner cavity (32g) inner surface
Core print seat guide surface (32b)；
It is equipped with spool exhaust passage (31d) among spool (31), for linking up discharge chamber (39) and the control at core assembly (3) both ends
Chamber (40) processed；One end of spool (31) sets seal spool end face (31a), for matching with the seal plug (7) in discharge chamber (39)
It closes；The other end of spool (31) is for leading to control chamber (40), and spool (31) other end is equipped with block machine (31e), in block machine (31e) court
Seal spool pad (37) are equipped with to valve core case (32) side, valve core case (32) other end, which is set, to be matched with seal spool pad (37)
Valve core case seal face (32a)；Spool (31) other end offsets with valve core spring (33) one end, and valve core spring (33) other end is used
In resisting control chamber (40) bottom；
The first sealing ring of valve core case is respectively set on the valve core case inner and outer wall of side air inlet (32f) of valve core case (32)
(34) and the second sealing ring of valve core case (35), it is arranged on the valve core case outer wall of other side air inlet (32f) of valve core case (32)
Valve core case third sealing ring (36)；
Seal plug (7) is used to close one end of the spool (31).
2. the plug and core assembly of electric controlled pneumatic control device as described in claim 1, which is characterized in that
Spool guide surface (31b), valve core case guide surface (32b) are located at the side that core assembly deviates from control chamber (40).
3. the plug and core assembly of electric controlled pneumatic control device as described in claim 1, which is characterized in that
Plug pad (16) are equipped with towards one end of spool (31) on seal plug (7), for closing the one of the spool (31)
End.
4. the plug and core assembly of electric controlled pneumatic control device as claimed in claim 3, which is characterized in that
Air hole is equipped in seal plug on rear side of plug pad.
5. the plug and core assembly of electric controlled pneumatic control device as described in claim 3 or 4, which is characterized in that
Slot (7a) is padded towards one end of spool (31) setting plug in seal plug (7), plug pad (16) is mounted on plug pad slot
In (7a), fixed by vulcanization.
6. the plug and core assembly of electric controlled pneumatic control device as described in claim 3 or 4, which is characterized in that
Slot (7a) is padded towards one end of spool (31) setting plug in seal plug (7), seal plug (7) leading edge is equipped with to varus
Side (7d), plug pad (16) are mounted in plug pad slot (7a), by compressing to in-flanges (7d).
7. the plug and core assembly of electric controlled pneumatic control device as described in claim 1, which is characterized in that
In block machine (31e) towards setting seal spool ring recess (31c) on valve core case side, seal spool pad (37) is fixed on spool
In seal groove (31c), fixed by vulcanization.
8. the plug and core assembly of electric controlled pneumatic control device as described in claim 1, which is characterized in that
Seal spool pad (37) is fixed on the step surface towards valve core case (32) of spool block machine (31e) by vulcanization.
9. the plug and core assembly of electric controlled pneumatic control device as described in claim 1, which is characterized in that
It is set inside one end of valve core case (32) sleeve (17), the inner surface of sleeve (17) sets valve core case guide surface (32b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275398.6U CN209325146U (en) | 2018-12-29 | 2018-12-29 | The plug and core assembly of electric controlled pneumatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275398.6U CN209325146U (en) | 2018-12-29 | 2018-12-29 | The plug and core assembly of electric controlled pneumatic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209325146U true CN209325146U (en) | 2019-08-30 |
Family
ID=67730349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822275398.6U Withdrawn - After Issue CN209325146U (en) | 2018-12-29 | 2018-12-29 | The plug and core assembly of electric controlled pneumatic control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209325146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488803A (en) * | 2018-12-29 | 2019-03-19 | 汽解放汽车有限公司 | The plug and core assembly of electric controlled pneumatic control device |
| CN112460300A (en) * | 2020-11-24 | 2021-03-09 | 南京工程学院 | Gas proportional pressure reducing valve |
-
2018
- 2018-12-29 CN CN201822275398.6U patent/CN209325146U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488803A (en) * | 2018-12-29 | 2019-03-19 | 汽解放汽车有限公司 | The plug and core assembly of electric controlled pneumatic control device |
| CN109488803B (en) * | 2018-12-29 | 2023-08-15 | 一汽解放汽车有限公司 | Plug and valve core assembly of electric control pneumatic control device |
| CN112460300A (en) * | 2020-11-24 | 2021-03-09 | 南京工程学院 | Gas proportional pressure reducing valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209325146U (en) | The plug and core assembly of electric controlled pneumatic control device | |
| CN109488803A (en) | The plug and core assembly of electric controlled pneumatic control device | |
| CN106089500B (en) | Straight-through type double-channel gas injection valve | |
| CN109538349B (en) | Pneumatic control device and control method for valve | |
| EP1382922A3 (en) | Constant flow rate expansion valve | |
| KR101822282B1 (en) | Valve device for vehicle | |
| CN209324503U (en) | The air control unit of valve | |
| CN106641389A (en) | Pressure reduction valve with closure function and dosing machine comprising same | |
| CN210622944U (en) | Improved novel EGR valve | |
| CN103912697A (en) | Air suction valve of subway air source system | |
| CN216407747U (en) | Flow control valve with groove hole | |
| CN202927149U (en) | Permanent magnet check valve | |
| CN205360202U (en) | Large -traffic proportional control quick response device of low pressure and quick response control valve thereof | |
| CN105498066A (en) | Low-pressure large-flux ratio control quick response device and quick response control valve thereof | |
| CN209909272U (en) | Electromagnetic valve set for pressure control | |
| CN215486474U (en) | Variable displacement compressor flow control valve controlled by pressure difference | |
| CN209398874U (en) | A kind of two-period form air inlet of electronically controlled proportional valve and two-period form exhaust structure | |
| CN106439094B (en) | A kind of stable trigger valve of Pneumatic-control type | |
| CN212028721U (en) | Pilot-operated proportional flow valve with position feedback function | |
| CN207634774U (en) | A kind of two-bit triplet pressure-button valve | |
| CN203453349U (en) | Novel gas cylinder mechanism | |
| CN220792223U (en) | Electromagnetic pulse valve | |
| CN114135677B (en) | Flow control valve and control method thereof | |
| CN205678201U (en) | Axial-flow type pressure-reducing valve | |
| DE60300206D1 (en) | Pneumatic servo with remote seats, inlet and equalizing valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190830 Effective date of abandoning: 20230815 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190830 Effective date of abandoning: 20230815 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |