CN207554798U - A kind of air bag seals automaton - Google Patents
A kind of air bag seals automaton Download PDFInfo
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- CN207554798U CN207554798U CN201721170005.4U CN201721170005U CN207554798U CN 207554798 U CN207554798 U CN 207554798U CN 201721170005 U CN201721170005 U CN 201721170005U CN 207554798 U CN207554798 U CN 207554798U
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Abstract
The utility model is related to a kind of air bags to seal automaton, belongs to automatic-sealed technical field.The device includes control inflation gas circuit leading portion respectively and the inflation solenoid valve and pressure-releasing electromagnetic valve of deflation gas circuit leading portion break-make, and the inflation solenoid valve is connected with gas control on-off valve, and the deflation gas circuit of the pressure-releasing electromagnetic valve control is connected with the pilot port of gas control on-off valve；It is connected after the filtered pressure reducing valve of gas control on-off valve by inflating gas circuit back segment with pressure bladder；The pressure-releasing electromagnetic valve connects air after the primary path of Venturi effect vacuum generator by deflation gas circuit back segment；The inflation gas circuit back segment is connected with deflation gas circuit back segment with the left and right air inlet of dual-pressure valve respectively, and the gas outlet of the dual-pressure valve is connected with the vacuum port of the vacuum generator.When air bag can be made fully to deflate retraction using the utility model, then perform follow-up sealing action, damage pressure bladder is effectively prevent, whole process is reliable and stable.
Description
Technical field
The utility model is related to a kind of seal control device, especially a kind of air bag sealing automaton belongs to
In automatic-sealed technical field.
Background technology
Gas-flow closure air bag is hollow sealing circle made of a kind of rubber, and when use, which is filled with gas, makes its effect in internal pressure
Lower expansion, to fill up the gap between sealing structure, so as to achieve the effect that sealing.When need not seal, internal pressure is unloaded, air bag
The state before inflation is contracted to by the resilience of rubber material, is detached from sealing surface.The characteristics of gas-flow closure air bag, makes it suitable
For sealing the occasion that perimeter is long, gap is big, and it is not high to required precision, the inflation/deflation of air bag is also easy to control, therefore common
In opening and closing frequent product, such as it is widely used between large-scale hatch door and nacelle, between the pipeline that often opens and closes and port
Sealing.Application No. is CN 204323366 U, CN 206050260 U, CN 201891841 U Chinese patent literature it is public respectively
The gas-flow closure prior art for being applied to track train car door, baking oven, extended cabin is opened.
However, since rubber material resilience performance is not good enough, due to rubber fatigue aging etc., often occurs air bag in practice and puts
The phenomenon that state before inflating can not be contracted to after gas, can not be even detached from sealing surface, so as to which sealing structure be caused to be damaged when acting
Hinder pressure bladder.
Utility model content
The purpose of this utility model is that it in view of the above-mentioned problems of the prior art, proposes to may insure air bag deflation
When fully bounce back and reliable and stable air bag sealing automaton.
In order to reach object above, the air bag sealing automaton of the utility model includes control inflation respectively
The inflation solenoid valve and pressure-releasing electromagnetic valve of gas circuit leading portion and deflation gas circuit leading portion break-make, the inflation solenoid valve and gas control on-off valve
Series connection, the deflation gas circuit of the pressure-releasing electromagnetic valve control are connected with the pilot port of gas control on-off valve；The gas control on-off valve passes through
It is connected after filter pressure reducing valve by inflating gas circuit back segment with pressure bladder；The pressure-releasing electromagnetic valve is through Venturi effect vacuum generator
Primary path after air connect by deflation gas circuit back segment；Inflation gas circuit back segment and the deflation gas circuit back segment respectively with dual-pressure valve
Left and right air inlet connection, the gas outlet of the dual-pressure valve is connected with the vacuum port of the vacuum generator.
In work, when control opens inflation solenoid valve and closes pressure-releasing electromagnetic valve, compressed air is through gas overcharging solenoid valve
Lead to the air inlet of gas control on-off valve, since the pilot port pressure of gas control on-off valve at this time is 0, in connected state, make
Compressed air enters pressure bladder after leading to filtering pressure reducing valve decompression, completes gas-flow closure and keeps gasbag pressure.At the same time,
Dual-pressure valve is closed left air inlet since left air inlet air pressure is more than right air inlet.
And when control inflation solenoid valve is closed, pressure-releasing electromagnetic valve is opened, compressed air is led to very by pressure-releasing electromagnetic valve
The air inlet of empty generator, and it is emitted into air from gas outlet.
Meanwhile the pilot port of gas control on-off valve brings about the desired sensation and is at off-state, it is ensured that inflation gas circuit is closed；And dual-pressure valve
Left air inlet air pressure be less than right air inlet, therefore the left air inlet connect with its gas outlet, i.e., result makes pressure bladder pass through pair
The vacuum port that pressure valve is in negative pressure state with vacuum generator connects, and is able to be deflated the extraction of the air-flow in gas circuit and discharges together
To air, until the pressure of inside air bag reaches the vacuum limit of vacuum generator.The vacuum effectiveness can be such that air bag fully puts
Gas bounces back, then when performing follow-up sealing action, effectively prevent damage pressure bladder, whole process is reliable and stable.
The utility model further improves, and the inflation gas circuit back segment is equipped with pressure sensor.The pressure sensor
Operating pressure when preferably using the universal pressure sensor of vacuum/positive pressure, therefore can both monitor normal work in real time in air bag,
The vacuum degree of inside air bag when can monitor air bags again.When pressure exceeds setting range, control sends out alarm signal.
Description of the drawings
The utility model is further described with reference to specific embodiment and its attached drawing.
Fig. 1 is the Automatic Control Theory figure of the utility model one embodiment.
Fig. 2 is the structure principle chart of gas control on-off valve in Fig. 1 embodiments.
Fig. 3 is the structure diagram of gas control on-off valve in Fig. 1 embodiments.
Fig. 4 is the structure principle chart of dual-pressure valve in Fig. 1 embodiments.
Fig. 5 is the structure diagram of dual-pressure valve in Fig. 1 embodiments.
Fig. 6 is the structure principle chart of vacuum generator in Fig. 1 embodiments.
Fig. 7 is the structure diagram of vacuum generator in Fig. 1 embodiments.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
The air bag of the present embodiment seals automaton as shown in Figure 1, directly connecing the inflating air of compressed air source 1
Road leading portion and deflation gas circuit leading portion are respectively provided with the control inflation solenoid valve 2 of its break-make and pressure-releasing electromagnetic valve 7.Inflate solenoid valve 2
It connects with gas control on-off valve 3, the deflation gas circuit that pressure-releasing electromagnetic valve 7 controls is connected with the pilot port of gas control on-off valve 3.Gas control break-make
It is connected after 3 filtered pressure reducing valve 4 of valve by being equipped with the inflation gas circuit back segment of pressure sensor 5 with pressure bladder 6.Pressure-releasing electromagnetic valve
7 connect air after the primary path of Venturi effect vacuum generator 9 by deflation gas circuit back segment.Inflate gas circuit back segment and deflation gas
Road back segment connects respectively with the left and right air inlet of dual-pressure valve 8, and the gas outlet of dual-pressure valve 8 connects with the vacuum port of vacuum generator 9
It is logical.
The concrete structure of the present embodiment gas control on-off valve 3 as shown in Figures 2 and 3, including with air inlet 301 and gas outlet
302 valve body 31, the displacement spool 33 equipped with control break-make between the air inlet 301 and gas outlet 302, the displacement spool
33 one end is equipped with the guide's core 35 for being located at the first guide cavity of valve body 31, and buffer spring is housed between the displacement spool 33 and guide's core 35
36, the displacement other end of the spool far from buffer spring 36 is resisted against on return spring 34, and the outer end of guide's core 35, which is located at, buckles
It closes in 32 pilot port 304 of valve deck on valve body 31, is equipped with and is sleeved on guide's core 35 between elder generation's guide cavity and pilot port 304
Diaphragm 37.Therefore, when pilot port external pressure is relatively low, air inlet and gas outlet are blocked by spool, and when pilot port external pressure is higher,
The active force that spool will be made to overcome return spring, connects between air inlet and gas outlet.Buffer spring can be to avoid air pressure momentary fluctuation
Caused malfunction.
8 concrete structure of dual-pressure valve of the present embodiment as shown in Figure 4 and Figure 5, including with left inlet end 801, right inlet end
802 and the threeway main body 81 of outlet side 803, equipped with sliding spool 82 between the left inlet end 801 and right inlet end 802；
When left 801 air pressure of inlet end is more than right inlet end 802, the sliding spool 82 block left inlet end 801 and outlet side 803 and
Connect right inlet end 802 and outlet side 803；When right 802 air pressure of inlet end is more than left inlet end 801, the sliding spool 82
Right inlet end 802 is blocked to connect left inlet end 801 and outlet side 803 with outlet side 803.It therefore can be in the dress of the present embodiment
Play the role of switching inflation and discharge-channel on demand automatically in putting.
The concrete structure of vacuum generator 9 as shown in Figure 6 and Figure 7, including the master with draining hole 901 and jet orifice 903
Channel has annular negative pressure cavity 91, extends after the draining hole 901 is tapered and stretch between the draining hole 901 and jet orifice 903
Enter the nozzle 92 of negative pressure cavity 91, the jet orifice 903 is straight-through to stretch into negative pressure cavity 91 and the horn mouth 93 opposite with nozzle 92, described
There are gap 94, the side radial communication vacuum ports 902 in the gap 94 between 93 opposite end of nozzle 92 and horn mouth.Work as air
When flowing to jet orifice 903 by draining hole 901, the high-speed flow of nozzle 92 makes at gap 94 to generate due to Venturi effect certain
Vacuum degree, so as to which the air of vacuum port 902 be sucked.
The supply gas pressure of the compressed air source 0.6-1.0MPa of the present embodiment reduces to pressure bladder by filtering pressure reducing valve 4 to be made
With the 0.1-0.3MPa needed for operating mode.Pressure sensor 5 is the universal pressure sensor of vacuum/positive pressure, can both be monitored in real time
Operating pressure during normal work in air bag, and the vacuum degree of inside air bag when can monitor air bags, when pressure is beyond setting
When determining range, control system sends out alarm signal.
During air bag sealing automaton work, pressure bladder has inflatable and deflatable two kinds of operating modes, specific to fill
Load, unloading operational process are as follows.
（1）Airbag aeration operating mode：
Control inflation solenoid valve 2 is opened, and compressed air source 1 leads to 3 air inlet of gas control on-off valve through gas overcharging solenoid valve 2,
Its 304 pressure of pilot port is 0 at this time, and gas control on-off valve 3 is in connection（Air inlet 301 is connected with gas outlet 302）State, compression
Air leads to filtering pressure reducing valve 4 by gas control on-off valve 3 and is decompressed to minimum 0.1MPa, completes to inflate subsequently into pressure bladder 6.
At the same time, the left inlet end 801 of dual-pressure valve 8 is 0.1MPa, and right 802 pressure of inlet end is 0, therefore right inlet end
802 connect with outlet side 803, and left inlet end 801 is in off state.
During this period, inflation solenoid valve 2 is constantly in opening, ensures gasbag pressure.Pressure sensor 5 monitors in real time
Inside air bag pressure, if pressure value setting control shows that air bag is in normal condition between 0.1 ~ 0.15MPa.It is no
Then take the circumstances into consideration to send out " low pressure " or " high pressure " alarm signal.
（2）Air bag deflation operating mode：
Inflation solenoid valve 2 is closed, and pressure-releasing electromagnetic valve 7 is opened, and compressed air source 1 leads to vacuum hair by pressure-releasing electromagnetic valve 7
The draining hole 901 of raw device 9, and air is emitted into from jet orifice 903, the vacuum port 902 of vacuum generator is negative pressure state.Together
When, the pilot port 304 of gas control on-off valve 3 is brought about the desired sensation, and gas control on-off valve 3, which is in, to be disconnected（Air inlet 301 is disconnected with gas outlet 302）Shape
State, gas outlet 302 are closed.
At the same time, 801 air pressure of left inlet end of dual-pressure valve 8 is 0.1MPa（Blanket gas intraluminal pressure）, right inlet end 802
Reach more than 0.6MPa, therefore left inlet end 801 is connected with outlet side 803, i.e., the air inlet of pressure bladder 6 by dual-pressure valve 8 with
The vacuum port 902 of vacuum generator 9 connects, therefore the gas in pressure bladder 6 is drawn and is emitted into big by vacuum generator 9
Gas, the pressure of final inside air bag can reach the vacuum limit of vacuum generator 9（~-70kPa）.
During this period, pressure sensor 5 monitors inside air bag pressure（Vacuum degree）, when pressure value be less than or equal to -50kPa,
Show to deflate and complete, air bag can be contracted to original state under the action of negative pressure.If Exhaust airbag deflation operating mode continue 60 seconds it
Afterwards, intracapsular pressure value remains above -50kPa, and control system sends out " air bag deflation failure " alarm signal, and operating personnel is reminded to go
Scene investigation failure.
After air bag deflation operating mode successfully completes, control system performs the action of follow-up sealing structure again, in this way can be effective
Prevent sealing structure from damaging pressure bladder when acting.
In conclusion the air bag of the present embodiment seals automaton by solenoid valve, gas control on-off valve, double pressures
Valve, vacuum generator, gas-flow closure air bag are organically combined, and remarkable advantage is：
（1）It is evacuated when pressure bladder is deflated using vacuum generator, therefore can ensure that pressure bladder retracts to initial shape
State prevents sealing structure to be damaged when acting.
（2）It is rational to be filled and deflated by control loading has been effectively ensured, has unloaded safe and reliable to operation, and it can realize remote auto
Change control, it is applied widely.
In addition to the implementation, the utility model can also have other embodiment, all to use equivalents or equivalent
All technical solutions for converting and being formed, all fall within the scope of protection of the utility model.
Claims (7)
1. a kind of air bag seals automaton, it is characterised in that：Including controlling inflation gas circuit leading portion and deflation respectively
The inflation solenoid valve of gas circuit leading portion break-make（2）And pressure-releasing electromagnetic valve（7）, it is described to inflate solenoid valve 2 and gas control on-off valve（3）String
Connection, the deflation gas circuit of the pressure-releasing electromagnetic valve control are connected with the pilot port of gas control on-off valve；The gas control on-off valve is filtered
Pressure reducing valve（4）Afterwards by inflating gas circuit back segment and pressure bladder（6）Connection；The pressure-releasing electromagnetic valve is sent out through Venturi effect vacuum
Raw device（9）Primary path after air connect by deflation gas circuit back segment；Inflation gas circuit back segment and the deflation gas circuit back segment respectively with
Dual-pressure valve（8）Left and right air inlet connection, the gas outlet of the dual-pressure valve is connected with the vacuum port of the vacuum generator.
2. a kind of air bag sealing automaton according to claim 1, it is characterised in that：The inflation gas circuit
Back segment is equipped with pressure sensor（5）.
3. a kind of air bag sealing automaton according to claim 1 or 2, it is characterised in that：The gas control
On-off valve includes having air inlet（301）And gas outlet（302）Valve body（31）, between the air inlet 301 and gas outlet 302
Displacement spool equipped with control break-make（33）, one end of the displacement spool is equipped with guide's core positioned at valve body elder generation guide cavity（35）,
Buffer spring is housed between the displacement spool and guide's core（36）, the displacement other end of the spool far from buffer spring is resisted against multiple
Position spring（34）On.
4. a kind of air bag sealing automaton according to claim 3, it is characterised in that：Guide's core
Outer end is located at the valve deck being fastened on valve body（32）Pilot port（304）In, elder generation's guide cavity and pilot port（304）Between equipped with set
Diaphragm on guide's core（37）.
5. a kind of air bag sealing automaton according to claim 4, it is characterised in that：The dual-pressure valve packet
It includes with left inlet end（801）, right inlet end（802）And outlet side（803）Threeway main body（81）, the left inlet end and
Equipped with sliding spool between right inlet end（82）；When left inlet end air pressure is more than right inlet end, the sliding spool blocks left
Inlet end connects right inlet end and outlet side with outlet side；When right inlet end air pressure is more than left inlet end, the sliding valve
Core blocks right inlet end and outlet side and connects left inlet end and outlet side.
6. a kind of air bag sealing automaton according to claim 5, it is characterised in that：The vacuum occurs
Device includes having draining hole（901）And jet orifice（903）Main channel, there is annular negative pressure between the draining hole and jet orifice
Chamber（91）, extend the nozzle for stretching into negative pressure cavity after the draining hole is tapered（92）, the jet orifice lead directly to stretch into negative pressure cavity and
The horn mouth opposite with nozzle（93）, there are gaps between the nozzle and horn mouth opposite end.
7. a kind of air bag sealing automaton according to claim 6, it is characterised in that：The one of the gap
Side radial communication vacuum port（902）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721170005.4U CN207554798U (en) | 2017-09-13 | 2017-09-13 | A kind of air bag seals automaton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721170005.4U CN207554798U (en) | 2017-09-13 | 2017-09-13 | A kind of air bag seals automaton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207554798U true CN207554798U (en) | 2018-06-29 |
Family
ID=62676254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721170005.4U Active CN207554798U (en) | 2017-09-13 | 2017-09-13 | A kind of air bag seals automaton |
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| Country | Link |
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| CN (1) | CN207554798U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448612A (en) * | 2017-09-13 | 2017-12-08 | 航天晨光股份有限公司 | A kind of air bag seals automaton |
| CN113503363A (en) * | 2021-07-06 | 2021-10-15 | 河南中烟工业有限责任公司 | Air bag sealing ring |
-
2017
- 2017-09-13 CN CN201721170005.4U patent/CN207554798U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448612A (en) * | 2017-09-13 | 2017-12-08 | 航天晨光股份有限公司 | A kind of air bag seals automaton |
| CN113503363A (en) * | 2021-07-06 | 2021-10-15 | 河南中烟工业有限责任公司 | Air bag sealing ring |
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