CN208565984U - Air supply system and its damping device - Google Patents
Air supply system and its damping device Download PDFInfo
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- CN208565984U CN208565984U CN201820575073.7U CN201820575073U CN208565984U CN 208565984 U CN208565984 U CN 208565984U CN 201820575073 U CN201820575073 U CN 201820575073U CN 208565984 U CN208565984 U CN 208565984U
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Abstract
The utility model discloses a kind of damping devices, are used for air supply system, and the vibration of air compressor machine passes to elastic component by pallet, plays cushioning effect；Since the mounting height in pallet pneumatics portion is lower than the mounting height of elastic portion, air compressor machine is then mounted on pneumatics portion, after elastic component is assemblied in elastic portion, compared with air compressor machine entirety is all higher than elastic component installation, this structure can be such that the center of gravity relative resilient part of air compressor machine reduces, to reduce vibration amplitude of the air compressor machine on elastic component, to reach more preferable damping effect.The invention also discloses a kind of air supply systems using above-mentioned damping device.
Description
Technical field
The utility model relates to air compressor machine technical field, in particular to a kind of air supply system and its damping device.
Background technique
Air compressor machine, i.e. air compressor are a kind of equipment to compressed gas.
It is done on the air-source of power driven tools currently, air compressor machine is commonly used in gas, due to there is the flowing of motor and air,
This makes air compressor machine that can generate biggish vibration and noise at work, and at this moment damping and noise reduction are just of great significance.
Have some shock-reducing and noise-reducing structures now, but effect need to be improved.As Chinese patent CN205806323U is public
Opened a kind of air compressor machine shock-damping structure, including be equipped with air compressor machine bottom plate, positioned at the bottom plate lower part mounting base,
Four groups of dual springs that air compressor machine plate outer side is arranged in pre-tighten damper, and it includes spring pressure that each group of dual spring, which pre-tightens damper,
Cap, two middle spring bases, lower spring cup, core through screw rod, two middle spring bases are respectively fixedly connected in the upper and lower part of bottom plate,
Lower spring cup is fixedly connected in mounting seat, is fixed between the middle spring base and the lower spring cup of the bottom plate lower part and is pacified
Equipped with lower spring, it is fixed between the middle spring base on the bottom plate top and the spring pressure cap for being located at upper part and is equipped with
Spring, the core through screw rod pass through from top to bottom the spring pressure cap, upper spring, middle spring, bottom plate, lower spring and with lower spring
Seat is connected with mounting seat, is pre-tightened damper to dual spring by rotation core through screw rod and is pre-tightened.Structure is complicated for the program, no
Conducive to producing and assemble；Air compressor machine is high with respect to spring center of gravity, vibration amplitude of the air compressor machine on spring can be made larger, and due to pre-
It is transmitted to vibration on bottom plate by core through screw rod, causes the vibration of bottom plate.
Utility model content
In view of this, the present invention provides a kind of damping devices, can play more preferable damping effect for air compressor machine.
The utility model additionally provides a kind of air supply system using above-mentioned damping device.
To achieve the above object, the utility model provides the following technical solutions:
A kind of damping device is used for air supply system, comprising: supporting mechanism；
The supporting mechanism includes: elastic component, pallet and bottom plate；
The pallet is installed on the bottom plate by the elastic component；
The pallet includes the pneumatics portion for installing air compressor machine, and the elastic portion cooperated for same elastic component；The sky
The mounting height of splenium is lower than the mounting height of the elastic portion.Preferably, the supporting mechanism further includes described for limiting
Locating part of the pallet along the elastic component elastic force direct limit displacement.
Preferably, the locating part includes:
It is set to the pillar of the bottom plate；
It is set to the limit plate of the pillar；
It is set to the pillar, and the buffer stopper between the limit plate and the elastic portion.
Preferably, further includes: cover mechanism；
The cover mechanism includes:
For accommodating the housing body of the air compressor machine, the housing body offers air inlet；
It is set to the radiator fan of the housing body.
A kind of air supply system, including air compressor machine, further include such as above-mentioned damping device,
Preferably, the installation height of C.G. of the air compressor machine and the upper surface height of the elastic component are identical.
Preferably, gas circuit includes gas source and overflow valve, further include setting the gas source air inlet, gas outlet and/or
The pipeline that spirals of the overflow valve air gate.
Preferably, gas circuit includes solenoid valve, further includes the buffer that the solenoid valve vents mouth is arranged in.
Preferably, the buffer includes:
Buffer shell；
The buffer bar being set in the buffer shell；
The acoustical cotton being set at buffer enclosure exhaust hole.
Preferably, the buffer shell offers air inlet；The end of the air inlet is communicated with the taper hole of flaring, institute
The conical ring gap that flaring is formed between taper hole and the back taper of the buffer bar is stated, the end in the conical ring gap is connected to described
Gas vent.
It can be seen from the above technical scheme that damping device provided by the utility model, the vibration of air compressor machine passes through support
Disk passes to elastic component, plays cushioning effect；Since the mounting height in pallet pneumatics portion is lower than the mounting height of elastic portion, then will
Air compressor machine is mounted on pneumatics portion, after elastic component is assemblied in elastic portion, compared with air compressor machine entirety is all higher than elastic component installation, this
Structure can be such that the center of gravity relative resilient part of air compressor machine reduces, to reduce vibration amplitude of the air compressor machine on elastic component, to reach
To more preferable damping effect.The utility model additionally provides a kind of air supply system, due to using above-mentioned damping device,
Also just there is corresponding beneficial effect, be specifically referred to described above, details are not described herein.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of air supply system provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of pallet provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram that cover mechanism is isolated in source noise provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of air-channel system provided by the embodiment of the utility model；
Fig. 5 is state diagram when the executive component of cylinder provided by the embodiment of the utility model driving clamps object；
Fig. 6 is the outline structural diagram of buffer provided by the embodiment of the utility model；
Fig. 7 is the schematic diagram of internal structure of buffer provided by the embodiment of the utility model.
Wherein, 101 be air compressor machine, and 102 be elastic component, and 103 be spring fixed seat, and 104 be pillar, and 105 be pallet, 106
It is buffer stopper for limit plate, 107,108 be bottom plate；109 be housing body, and 110 be air inlet, and 111 be radiator fan；
1 is gas source, and 2 be overflow valve, and 3 be solenoid valve, and 4 be cylinder, and 5 and 6 be buffer, and T1, T2 and T3 are the pipeline that spirals；
4a is executive component, and 4a1 and 4a2 are clamping jaw, and 4b is held object；
51 be locking nut, and 52 be buffer bar, and 53 be acoustical cotton, and 54 be buffer shell, and 55 be back taper, and 56 be cone
Hole, 57 be air inlet, and 58 be gas vent.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Damping device provided by the embodiment of the utility model is used for air supply system, comprising: supporting mechanism；
Supporting mechanism includes: elastic component 102, pallet 105 and bottom plate 108, as shown in Figure 1；
Pallet 105 is installed on bottom plate 108 by elastic component 102；
Pallet 105 includes the pneumatics portion for installing air compressor machine 101, and for the elastic portion of same elastic component 102 cooperation；It is empty
The mounting height of splenium is lower than the mounting height of elastic portion.
It can be seen from the above technical scheme that damping device provided by the embodiment of the utility model, the shake of air compressor machine 101
It is dynamic that elastic component 102 is passed to by pallet 105, play cushioning effect；Since the mounting height in 105 pneumatics portion of pallet is lower than elasticity
Air compressor machine 101 is then mounted on pneumatics portion by the mounting height in portion, after elastic component 102 is assemblied in elastic portion, and by air compressor machine 101
The whole scheme for being all higher than the installation of elastic component 102 is compared, this structure can be such that the center of gravity relative resilient part 102 of air compressor machine 101 drops
It is low, to reduce vibration amplitude of the air compressor machine 101 on elastic component 102, to reach more preferable damping effect.
Preferably, pallet 105 further includes interconnecting piece, pneumatics portion and elastic portion are all connected to interconnecting piece, and pneumatics portion
Link position is lower than the link position of elastic portion.Realize that the installation in its pneumatics portion is high by the own structural characteristics of pallet 105
Degree is lower than the mounting height of elastic portion, and such setting will not improve assembly difficulty.It is held in the palm it is, of course, also possible to be realized by assembly method
The mounting height in 105 pneumatics portion of disk is lower than the mounting height of its elastic portion, such as pallet 105 is favoured horizontal direction assembly.
In the present embodiment, the pneumatics portion of pallet 105 and elastic portion are level board, are connected to the bottom of interconnecting piece
And top, between formed difference in height X, structure is simple, it is easy to produce and assembly.Its structure is referred to shown in Fig. 1 and Fig. 2, support
Disk 105 is assemblied in 108 top of bottom plate in parallel, and air compressor machine 101 is installed on pneumatics portion top surface, and elastic component 102 is assemblied in elastic portion bottom
Between 108 top surface of face and bottom plate.Specifically, interconnecting piece is vertical plate, left and right sides regular square space is easily installed pneumatics
Machine 101 and elastic component 102；The quantity of pallet 105 is multiple, and the different location of corresponding air compressor machine 101 is uniformly distributed, with optimization
Stress is herein two, is located at the both ends of air compressor machine 101；The quantity of elastic portion is multiple on single pallet 105, and is closed
It is symmetrical in pneumatics portion, guarantee uniform force, is herein two, is located at the both ends in pneumatics portion.Preferably, elastic component
102 be spring, and supporting mechanism further includes spring fixed seat 103, and two spring fixed seats 103 are separately fixed at bottom plate 108 and support
On disk 105, spring is arranged among bottom plate 108 and pallet 105 (wherein spring fixed seat 103 by spring fixed seat 103
It to position-limiting action, is not connect with spring).Certainly, spring may be alternatively provided as being set on pillar 104.
In order to advanced optimize above-mentioned technical solution, supporting mechanism further includes for limiting pallet 105 along elastic component 102
The locating part of elastic force direct limit displacement improves equipment moving to limit the vibration amplitude of pallet 105 Yu air compressor machine 101
Stability and reliability are avoided because accident occurs when air compressor machine 101 and 105 vibration amplitude of pallet are more than a certain range.Such as Fig. 1 reality
It applies shown in example, since spring fixed seat 103 is not connect with spring, then extraneous strenuous vibration (such as in transportational process) causes air compressor machine
When 101 vibration, spring is easy to fall off from spring fixed seat 103, falls off so as to cause air compressor machine 101；And use above-mentioned support
Mechanism can guarantee the vibration amplitude of air compressor machine 101 and pallet 105 in a certain range, to guarantee that spring will not be fixed from spring
It falls off on seat 103.
In the present embodiment, locating part includes:
It is set to the pillar 104 of bottom plate 108, structure is referred to shown in Fig. 1；
It is set to the limit plate 106 of pillar 104, is located at its top herein, for limiting upward amplitude of vibration；
It is set to pillar 104, and the buffer stopper 107 between limit plate 106 and elastic portion, protection can be played and made
With avoiding contacting firmly between component.This structure can also be not provided with pillar 104, limit plate 106 and buffer stopper 107, need to transport
When, pallet 105 is depressed on bottom plate 108 and is locked with screw, this structure will be simpler under the premise of reaching effect same
It is single.
Damping device provided by the embodiment of the utility model, further includes: cover mechanism；
The cover mechanism includes:
For accommodating the housing body 109 of air compressor machine 101, housing body 109 offers air inlet 110, and structure can be with
Referring to shown in Fig. 3；
It is set to the radiator fan 111 of housing body 109.Air compressor machine 101 is arranged in housing body 109, plays sound insulation work
With, while it being provided with acoustical cotton on housing body 109, noise reduction is further functioned as, is provided with air inlet on housing body 109
110 and radiator fan 111, cool down to air compressor machine, prevents air compressor machine temperature excessively high.
The utility model embodiment additionally provides a kind of air supply system, including air compressor machine 101, further includes such as above-mentioned damping
Device.Since the air supply system uses above-mentioned damping device, also just there is corresponding beneficial effect, it specifically can be with
Referring to described above, details are not described herein.
In order to support pallet 105 to overcome gravity, elastic component 102 includes at least effect component in the vertical direction.In bullet
Property the height of part 102 it is certain in the case where, 108 height of center of gravity opposed bottom of air compressor machine 101 is lower, and damping effect is better, that is, exists
Difference in height X is set on pallet 105, to reduce the center of gravity of air compressor machine 101 and the relative altitude of 102 upper surface of elastic component.As
It is preferred that the installation height of C.G. of air compressor machine 101 is identical as the upper surface height of elastic component 102, to reach best damping effect.
Specifically, elastic component 102 is arranged along the vertical direction, structure is referred to shown in Fig. 1.
In the present embodiment, the gas circuit of air supply system includes gas source 1 and overflow valve 2, further includes being arranged in 1 air inlet of gas source
Mouthful, the pipeline that spirals of 2 gas outlet of gas outlet and/or overflow valve.Its structure is referred to shown in Fig. 4, air-flow the pipeline T1 that spirals,
Tube wall is constantly impacted in T2 and/or T3, hose tube wall absorbs part of impact force, gas shock power is reduced；Compressed air simultaneously
Flowed in path in pipe, manage in the helical duct that is formed also extend the flow path of air, increase flowing away from
From, increase absorption of the pipeline to gas shock power, reduce the flowing velocity of air, thus reduce air-flow flow at high speed and
The noise of generation.
Preferably, the gas circuit of air supply system includes solenoid valve 3, it further include the buffer that 3 exhaust outlet of solenoid valve is set.
For cylinder 4 in the case where guaranteeing that executive component chucking power is constant, speed when closing and opening is slower, more to the impact force of object
It is small, be conducive to protect held object, and held object is effectively prevent to shake.Buffer is according to specific structure and uses feelings
Condition can also make muffler use.
Further, buffer includes:
Buffer shell 54, structure are referred to shown in Fig. 6 and Fig. 7；
The buffer bar 52 being set in buffer shell 54 is cooperated by the two structure and realizes buffering；
The acoustical cotton 53 being set at 54 gas vent 58 of buffer shell；Gas passes through 53 row of acoustical cotton by gas vent 58
It is put into atmosphere, noise when gas discharge can be effectively reduced.
In the present embodiment, buffer shell 54 offers air inlet 57；The end of air inlet 57 is communicated with the cone of flaring
The conical ring gap of flaring is formed between the back taper 55 of hole 56, taper hole 56 and buffer bar 52, the end in conical ring gap is connected to row
Stomata 58.When gas passes through air inlet 57, gas enters buffer shell 54 by the gap between back taper 55 and taper hole 56
In cavity, it is discharged into atmosphere by gas vent 58 by acoustical cotton 53, when wherein acoustical cotton 53 can effectively reduce gas discharge
Noise.Specifically, buffer further includes locking nut 51, after locking nut 51 is contacted and is tightened with buffer shell 54,
It can guarantee the relative distance between buffer bar 52 and buffer shell 54, i.e. gap between guarantee back taper 55 and taper hole 56 is big
It is small, that is, control the speed of gas discharge.
This programme is described further combined with specific embodiments below:
1: utilizing the pipe noise reducing that spirals.
Gas source 1 (while generating positive pressure and negative pressure), overflow valve 2, solenoid valve 3, cylinder 4, buffer 5 and 6, spiral pipeline
T1, T2 and T3.
As shown in figure 4, gas source 1 works, generate negative pressure and driven for negative pressure, barotropic gas supply cylinder 4 uses, and passes through overflow
Extra barotropic gas is discharged valve 2.Gas source 1 can generate air-flow in inlet, outlet and 2 gas outlet of overflow valve at work and make an uproar
Sound, by the way that spiral pipeline T1, T2 and T3 is arranged, air-flow constantly impacts tube wall in the pipeline that spirals, and hose tube wall absorbs part and rushes
Power is hit, gas shock power is reduced；Compressed air is flowed in the path in pipe simultaneously, manages the interior helical duct formed
The flow path for extending air, increases flow distance, increases absorption of the pipeline to gas shock power, reduces air
Flowing velocity, thus the noise for reducing air-flow flow at high speed and generating.The program is at low cost, easy for installation, and can be according to reality
Border situation increases or reduces length of pipe, replaces hose material, increases or reduce noise reduction effect to reach.
2: using buffer damping, noise reduction.
Solenoid valve 3 has entrance P, outlet A, B and exhaust outlet P1, P2, can be realized by the state of switching solenoid valve as follows
Two states:
State 1: entrance P and B connection, outlet A are connected to exhaust outlet P1.Compressed air enters cavity 43 at this time, pushes and lives
Stopper rod 42 is moved to the left, and the gas in cavity 41 is discharged from exhaust outlet P1；
State 2: entrance P and A connection, outlet B are connected to exhaust outlet P2.Compressed air enters cavity 41 at this time, pushes and lives
Stopper rod 42 moves right, and the gas in cavity 43 is discharged from exhaust outlet P2.
As shown in figure 5,4a is the executive component that cylinder 4 drives, when above-mentioned state 1, show on executive component 4a to be to press from both sides
Pawl 4a1 and 4a2 closure (or opening)；It when above-mentioned state 2, shows on executive component 4a and is, clamping jaw 4a1 and 4a2, which open, (or to be closed
It closes).It when executive component closes or opens under faster speed, to held object 4b and itself can cause to impact, generate
Noise simultaneously reduces itself service life, and held object 4b may also be damaged and shake, and contain when in held object 4b
Liquid or object will cause liquid or object and splash that (as executive component 4a and held object 4b decentraction, this phenomenon is brighter
It is aobvious).After buffer 5 and 6 is arranged on the exhaust outlet P1 and exhaust outlet P2 of air valve 3, cylinder 4 is guaranteeing executive component chucking power not
In the case where change, speed when closing and opening is slower, smaller to the impact force of object, is conducive to protect held object, and
It effectively prevent held object to shake.
As shown in figure 5 and figure 7, it includes locking nut 51, buffer bar 52, acoustical cotton 53, buffers for buffer structure
Shell 54, back taper 55, taper hole 56, air inlet 57 and gas vent 58.
When gas passes through air inlet 57, gas enters antifluctuator cavity by the gap between back taper 55 and taper hole 56
It is interior, it is discharged into atmosphere by gas vent 58 by acoustical cotton 53, making an uproar when wherein acoustical cotton 53 can effectively reduce gas discharge
Sound.
After locking nut 51 is contacted and tightened with buffer shell 54, buffer bar 52 and buffer shell 54 can guarantee
Between relative distance, i.e., guarantee back taper 55 and taper hole 56 between gap size, i.e., control gas discharge speed.
3: reducing vibroseis center of gravity and use spring shock absorption.
Air supply system as shown in Figure 1, it includes: air compressor machine 101, spring, spring fixed seat 103, pillar 104, pallet
105, limit plate 106, buffer stopper 107 and bottom plate 108.
Spring fixed seat 103 is separately fixed on bottom plate 108 and pallet 105, and spring is arranged by spring fixed seat 103
Among bottom plate 108 and pallet 105 (wherein spring fixed seat 103 only serves position-limiting action, does not connect with spring), air compressor machine
101 connect with pallet 105, and the vibration of air compressor machine 101 passes to spring by pallet, play cushioning effect.Wherein, in spring height
In the case that degree is certain, 108 height of center of gravity opposed bottom of air compressor machine 101 is lower, and damping effect is better, i.e., on pallet 105
Difference in height X is set, to reduce the center of gravity of air compressor machine 101 and the relative altitude of spring end face (when in air compressor machine center of gravity and spring
It is the most suitable when end face is parallel), to play more preferable damping effect.
4: gas source transport protection.
As shown in Fig. 2, since spring fixed seat 103 is not connect with spring, then extraneous strenuous vibration (such as in transportational process)
When air compressor machine 101 being caused to shake, spring is easy to fall off from spring fixed seat 103, falls off so as to cause air compressor machine 101.Both, if
Set pillar 104, the vibration amplitude of limit plate 106, air compressor machine 101 and pallet 105 will receive the limitation of limit plate 106, when the external world shakes
Dynamic when air compressor machine vibration amplitude being caused to be more than a certain range, limit plate 106 can guarantee the vibration width of air compressor machine 101 Yu pallet 105
It spends in a certain range, to guarantee that spring will not fall off from spring fixed seat 103.
5: noise source isolation and sound-absorbing.
Air compressor machine noise reduction: as shown in figure 3, air compressor machine 101 is arranged in outer cover 109, deadening, while outer cover 109 are played
On be provided with acoustical cotton, further function as noise reduction, air inlet 110 and radiator fan 111 be provided on outer cover 109, to pneumatics
Machine cools down, and prevents air compressor machine temperature excessively high, influences service life and the performance of compressor.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of damping device is used for air supply system characterized by comprising supporting mechanism；
The supporting mechanism includes: elastic component, pallet and bottom plate；
The pallet is installed on the bottom plate by the elastic component；
The pallet includes the pneumatics portion for installing air compressor machine, and the elastic portion cooperated for same elastic component；The pneumatics portion
Mounting height be lower than the elastic portion mounting height.
2. damping device according to claim 1, which is characterized in that the supporting mechanism further includes for limiting the support
Locating part of the disk along the elastic component elastic force direct limit displacement.
3. damping device according to claim 2, which is characterized in that the locating part includes:
It is set to the pillar of the bottom plate；
It is set to the limit plate of the pillar；
It is set to the pillar, and the buffer stopper between the limit plate and the elastic portion.
4. damping device according to claim 1, which is characterized in that further include: cover mechanism；
The cover mechanism includes:
For accommodating the housing body of the air compressor machine, the housing body offers air inlet；
It is set to the radiator fan of the housing body.
5. a kind of air supply system, including air compressor machine, which is characterized in that further include subtracting as described in claim 1-4 any one
Shake device.
6. air supply system according to claim 5, which is characterized in that the installation height of C.G. of the air compressor machine and the bullet
Property part upper surface height it is identical.
7. air supply system according to claim 5, which is characterized in that its gas circuit includes gas source and overflow valve, further includes setting
Set the pipeline that spirals of the air inlet in the gas source, gas outlet and/or the overflow valve air gate.
8. air supply system according to claim 5, which is characterized in that its gas circuit includes solenoid valve, further includes being arranged in institute
State the buffer of solenoid valve vents mouth.
9. air supply system according to claim 8, which is characterized in that the buffer includes:
Buffer shell；
The buffer bar being set in the buffer shell；
The acoustical cotton being set at buffer enclosure exhaust hole.
10. air supply system according to claim 9, which is characterized in that the buffer shell offers air inlet；It is described
The end of air inlet is communicated with the taper hole of flaring, is formed between the conical ring of flaring between the taper hole and the back taper of the buffer bar
The end of gap, the conical ring gap is connected to the gas vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820575073.7U CN208565984U (en) | 2018-04-20 | 2018-04-20 | Air supply system and its damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820575073.7U CN208565984U (en) | 2018-04-20 | 2018-04-20 | Air supply system and its damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208565984U true CN208565984U (en) | 2019-03-01 |
Family
ID=65480689
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820575073.7U Active CN208565984U (en) | 2018-04-20 | 2018-04-20 | Air supply system and its damping device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208565984U (en) |
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2018
- 2018-04-20 CN CN201820575073.7U patent/CN208565984U/en active Active
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