CN207830800U - A kind of limitation fluid scavenging apparatus - Google Patents
A kind of limitation fluid scavenging apparatus Download PDFInfo
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- CN207830800U CN207830800U CN201820126448.1U CN201820126448U CN207830800U CN 207830800 U CN207830800 U CN 207830800U CN 201820126448 U CN201820126448 U CN 201820126448U CN 207830800 U CN207830800 U CN 207830800U
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Abstract
The utility model discloses a kind of limitation fluid scavenging apparatus, including fluid inlet and fluid outlet, wherein, at least one mainstream channel is provided between the fluid inlet and fluid outlet, the bypass passageways that both ends are connected to the mainstream channel are distributed in the side of the mainstream channel, and the both ends of the bypass passageways are towards side where the fluid outlet.When reverse fluid flow enters utility model device, a part of fluid flows into bypass passageways, this segment fluid flow is when leaving bypass passageways, its flow direction and fluid flow direction contrary in mainstream channel, in bypass passageways outlet port sharp impacts occur for two fluids, a large amount of turbulent eddies are generated, the flowing kinetic energy of fluid is consumed, increase flow resistance.Into device fluid after the collision of multiple mainstream channel fluid and bypass passageways fluid, fluid dynamic energy is consumed completely, and resistance, which increases to, makes fluid motion generate stagnation, final to realize limitation fluid reflux effect.
Description
Technical field
The utility model is related to fluid supply technical fields, and in particular to a kind of limitation fluid scavenging apparatus.
Background technology
In fluid delivery process, it is required for fluid (gas, liquid) only to carry out one-way flow in many cases, i.e., keeps away
Exempt from the appearance that phenomenon is poured in down a chimney in reflux.For this purpose, being required for that the device of anti-backflow is arranged in a large amount of fluid conveying occasions.
At present field of fluid occur various anti-anti-backflow devices, mostly occur with form of check valve, be mounted on water pipe,
On the fluid supplies such as air hose channel.It is generally provided with complicated mechanical opening and closing structure in these check valves, makes for a long time
The case where will appear mechanical structure ageing failure after.Meanwhile being limited by structure, the control range of check-valves is smaller, cannot
Fluid reflux is limited in a wider context, such as prevents the reflux of two side liquid of vent window from pouring in down a chimney.
Invention content
The purpose of this utility model is to provide a kind of limitation fluid scavenging apparatus, effectively to limit fluid reflux, this dress
Simple in structure, inner inorganic tool moving component is set, the problem of mechanical aging existing for conventional apparatus is failed is can effectively avoid.
In order to realize that above-mentioned task, the utility model use following technical scheme：
A kind of limitation fluid scavenging apparatus, including fluid inlet and fluid outlet, wherein：
At least one mainstream channel, the side point of the mainstream channel are provided between the fluid inlet and fluid outlet
The bypass passageways that both ends are connected to the mainstream channel are furnished with, and the both ends of the bypass passageways are towards the fluid outlet
Place side.
Further, the mainstream channel includes the descending branch and ascent stage, descending branch and rising that end is connected with each other
There are non-zero included angles between section；The end of the fluid inlet connection descending branch, fluid outlet connect the end of ascent stage.
Further, the axial direction of the fluid inlet is identical as the axial direction of the descending branch, the axial direction of the fluid outlet
It is parallel with the axial direction of fluid inlet.
Further, the bypass passageways include the first honeycomb duct and be connected with the first honeycomb duct end second
Honeycomb duct, the first honeycomb duct is parallel with the second water conservancy diversion, and the axial length of the first honeycomb duct is less than the axial direction length of the second honeycomb duct
Degree, the internal diameter of the first honeycomb duct are identical as the internal diameter of the second honeycomb duct.
Further, first honeycomb duct is connected to by first interface with the mainstream channel, the second honeycomb duct
It is connected to the mainstream channel by second interface.
Further, the bypass passageways include the first bypass passageways and the setting being arranged on the downside of the descending branch
The second bypass passageways on the upside of the ascent stage, wherein the axial direction of the first honeycomb duct, the second honeycomb duct in the first bypass passageways
It is parallel with the axial direction of the ascent stage, axial direction and the descending branch of the first honeycomb duct, the second honeycomb duct in the second bypass passageways
Axial direction it is parallel.
Further, the second honeycomb duct in first bypass passageways, the first honeycomb duct in the second bypass passageways connect
It is connected on the descending branch, the junction of ascent stage.
Further, the angle in first bypass passageways between the second honeycomb duct and the descending branch is denoted as α, institute
It states the angle between ascent stage and horizontal direction and is denoted as θ, then have the θ of α=2.
Further, the proportional region of the internal diameter of the bypass passageways and mainstream channel internal diameter is 0.6~1.
Further, the limitation fluid scavenging apparatus further includes babinet, and front panel, the rear panel of babinet are mutually flat
Row, the fluid inlet, fluid outlet are symmetrically opened in the front panel, on rear panel, and fluid inlet, fluid outlet exist
Interval setting is multigroup on the front panel, rear panel.
The utility model has following technical characterstic：
Connecting bypass channel beside the mainstream channel that the utility model passes through portion in the device so that fluid carries out forward stream
There are greatest differences for device interior flow field when dynamic and reverse flow.When fluid carries out forward flow, due to opening for bypass passageways
Mouth direction and fluid flow direction are mutually suitable, cause fluid mainly to be flowed in mainstream channel, bypass passageways there's almost no fluid
It comes in and goes out, it is smaller that final fluid passes through suffered resistance when device.
When fluid carries out reverse flow, the opening direction of bypass passageways is consistent with fluid flow direction, segment fluid flow
Into bypass passageways, when leaving bypass passageways, flow direction becomes and mainstream channel fluid flow direction this segment fluid flow
Contrary, in bypass passageways outlet port, sharp impacts occur for two inner fluid passages, generate flowing of a large amount of turbulent eddies with fluid
Kinetic energy increases flow resistance.Into device fluid after the collision of multiple mainstream channel fluid and bypass passageways fluid,
Fluid dynamic energy is consumed completely, and resistance, which increases to, makes fluid motion generate stagnation, prevents the reverse flow of fluid, final to realize
Limit fluid reflux effect.
Description of the drawings
Fig. 1 is structure chart in front of the whole the utility model；
Fig. 2 is overall structure figure behind the utility model；
Fig. 3 is the side sectional view of the utility model；
Fig. 4 be mainstream channel, bypass passageways part cross-sectional detail figure；
Schematic diagram when Fig. 5 is two mainstream channel connections；
Fluid velocity vectors figure when Fig. 6 is the forward flow of the utility model；
Part fluid velocity vectors figure when Fig. 7 is the forward flow of the utility model；
Pressure-plotting when Fig. 8 is the forward flow of the utility model；
Fluid velocity vectors figure when Fig. 9 is the reverse flow of the utility model；
Part fluid velocity vectors figure when Figure 10 is the reverse flow of the utility model；
Pressure-plotting when Figure 11 is the reverse flow of the utility model.
Figure label represents：1-front panel, 2-rear panels, 3-upper plates, 4-lower plates, 5-left plates, 6-is right
Side plate, 7-fluid inlets, 8-fluid outlets, 9-bypass passageways, 9a-first interface, 9b-second interface, 9c-first are led
Runner, the second honeycomb ducts of 9d-, the first bypass passageways of 9-1-, the second bypass passageways of 9-2-, 10-mainstream channels, under 10a-
Section, 10b-ascent stage drop.
Specific implementation mode
As shown in figure 4, the utility model provides a kind of limitation fluid scavenging apparatus, including fluid inlet 7 and fluid go out
Mouth 8, wherein：
At least one mainstream channel 10 is provided between the fluid inlet 7 and fluid outlet 8, the mainstream channel 10
The bypass passageways 9 that both ends are connected to the mainstream channel 10 are distributed in side, and the both ends of the bypass passageways 9 are towards institute
State 8 place side of fluid outlet.
Fluid inlet 7 and fluid outlet 8 described in the utility model need to limit fluid time in fluid delivery process
The position of stream is equivalent to the effect of a check-valves, wherein the fluid can be gas, such as air, or liquid
Body, such as water, oil etc..Such as between can the utility model being mounted on two sections of fluid-transporting tubings, make the fluid inlet
7, fluid outlet 8 is connect with two sections of fluid-transporting tubings respectively, then fluid is from one section of fluid-transporting tubing from fluid inlet 7
It is entered in other end fluid-transporting tubing into the present apparatus, then from fluid outlet 8, and the structure of utility model device then can
Fluid is effectively prevented to enter from fluid outlet 8 and flow out the present apparatus from fluid inlet 7.
In order to achieve the purpose that non-return, at least one master is provided between fluid inlet 7 and fluid outlet 8 in this programme
Circulation road 10, as shown in figure 4, schematic diagram when giving a mainstream channel 10, fluid inlet 7, fluid outlet 8 are distinguished at this time
It is connected to the both ends of the mainstream channel 10；And as shown in figure 5, give the schematic diagram of two mainstream channels 10, two masters at this time
The end of circulation road 10 is connected with each other, and the fluid inlet 7, fluid outlet are located at described two interconnections
The both ends of mainstream channel 10.
In the present solution, bypass passageways 9 are distributed in the side of the mainstream channel 10, as shown in figure 4, bypass passageways 9
Structure all same, tool is there are two end, and two ends are connected with the mainstream channel 10, mainstream channel 10
It can be flowed into bypass passageways 9 from an end of the bypass passageways 9, then be flowed back to from another end of bypass passageways 9
Into mainstream channel 10.In order to play the effect of non-return, the both ends of bypass passageways 9 described in this programme go out towards the fluid
8 place sides of mouth, that is, the axial direction at the both ends of the bypass passageways 9 is directed to 8 place side of the fluid outlet, 9 both ends of bypass passageways
Axial line can be with the fluid outlet 8 axis parallel or intersection.
According to above-mentioned technical proposal, when fluid is from after entering in mainstream channel 10 fluid outlet 8, part is flowed
Body will be flowed into from one end of the bypass passageways 9, then be flowed out from the other end of bypass passageways 9, with the stream in mainstream channel 10
Body generates turbulent flow collision, local resistance is generated, to cause a large amount of kinetic energy rejection of fluid；When bypass passageways 9 are in mainstream channel
When the setting of 10 sides is multiple, the kinetic energy of fluid will be made to be gradually consumed, thus play the effect of limitation fluid reflux.
Optionally, as shown in Figures 3 to 5, mainstream channel 10 includes the descending branch 10a and ascent stage that end is connected with each other
10b, there are non-zero included angles between descending branch 10a and ascent stage 10b；The fluid inlet 7 connects the end of descending branch 10a, stream
The end of 8 connection ascent stage 10b of body outlet.Ascent stage 10b in this programme and descending branch 10a so that mainstream channel 10 is whole
V-shaped structure is constituted, effect is not influence forward flow of the fluid in the present apparatus (from fluid inlet 7 to 8 side of fluid outlet
To), while the effect of the bypass passageways 9 being enable preferably to play；Preferably, the internal diameter uniform one of the mainstream channel 10
It causes, i.e., the size of cross section is identical at an arbitrary position, to reduce the fluid resistance suffered in forward flow.
The structure design that mainstream channel 10 is connected with each other using above-mentioned descending branch 10a and ascent stage 10b so that fluid is in master
When 10 inside reverse flow of circulation road, since the end of the bypass passageways 9 is towards 8 place side of fluid outlet, then so that fluid
It can more easily enter inside bypass passageways 9, so that fluid dynamic energy can be consumed effectively.To ensure fluid in major flow
Resistance suffered when flowing is smaller in road 10, and takes into account the performance of 9 effect of bypass passageways, and the corner of mainstream channel 10 is unsuitable
It is excessive, it is preferable that the corner of mainstream channel 10 is less than 30 °；The corner is 10 ascent stage of mainstream channel 10b or descending branch
Angle between 10a and horizontal direction, such as the angle that the θ in Fig. 4 is ascent stage 10b and horizontal direction；Preferably, described upper
It is identical with the length of descending branch 10a to rise section 10b, is symmetrical arranged, i.e. folder between ascent stage 10b, descending branch 10a and horizontal direction
Angle is identical.
Optionally, the axial direction of the fluid inlet 7 is identical as the axial direction of descending branch 10a, the axis of the fluid outlet 8
To parallel with the axial direction of fluid inlet 7, as shown in Figures 3 to 5, i.e. the direction of the direction and fluid inlet 7 of the fluid outlet 8
Parallel or on same straight line, this structure is conducive to fluid and is entered in mainstream channel 10 from fluid inlet 7, also allows for flowing
Body flows out mainstream channel 10 from fluid outlet 8.
In the present solution, the concrete structure of the bypass passageways 9 is as shown in figure 4, the bypass passageways 9 include the first water conservancy diversion
Road 9c and the second honeycomb duct 9d being connected with the first ends honeycomb duct 9c, the first honeycomb duct 9c is parallel with the second water conservancy diversion, and
The axial length of first honeycomb duct 9c is less than the axial length of the second honeycomb duct 9d, the internal diameter of the first honeycomb duct and the second honeycomb duct
Internal diameter it is identical.
It is connected by bend pipe between the first honeycomb duct 9c and the second honeycomb duct 9d, which can be U-bend,
Or curve bend, right-angle elbow pipe or obtuse angle bend pipe etc..First honeycomb duct 9c passes through first interface 9a and the mainstream channel
10 connections, the second honeycomb duct 9d are connected to by second interface 9b with the mainstream channel 10.The first interface 9a and
One honeycomb duct is coaxial, and second interface 9b and second honeycomb duct are coaxial.
In the embodiment gone out as Figure 4 shows, two bypass passageways 9 are set on each mainstream channel 10, are specifically included
The first bypass passageways 9-1 being arranged on the downside of the descending branch 10a and the second bypass being arranged on the upside of the ascent stage 10b
Channel 9-2, wherein axial direction and the ascent stage 10b of the first honeycomb duct 9c, the second honeycomb duct 9d in the first bypass passageways 9-1
Axial direction it is parallel, the first honeycomb duct 9c in the second bypass passageways 9-2, the second honeycomb duct 9d axial direction with the descending branch 10a's
It is axial parallel, the both ends of bypass passageways 9 are allowed for so towards the 8 place side of fluid outlet；This structure makes
Fluid when forward flow, is not easily accessible in bypass passageways 9 in mainstream channel 10, and in reverse flow, and can enter
Bypass passageways 9, and the bypassed channel 9 of fluid in mainstream channel 10 is influenced.
Optionally, the first bypass passageways 9-1 can also be located at the top of the descending branch 10a, and second bypasses
Channel 9-2 can also be located at the lower section of the descending branch 10a；And on the descending branch 10a, ascent stage 10b, bypass passageways
9 can there are one or it is multiple.
In the present embodiment, as shown in figure 4, each setting one bypass passageways 9, wherein institute on descending branch 10a, ascent stage 10b
State the second honeycomb duct 9d in the first bypass passageways 9-1, the first honeycomb duct 9c in the second bypass passageways 9-2 be connected to it is described under
The junction of section 10a, ascent stage 10b drop.
By inventor's verification experimental verification, the second honeycomb duct 9d and descending branch 10a in the first bypass passageways 9-1
Between angle be denoted as α, then when having α=2 θ, limitation reflowing result it is more satisfactory.
As advanced optimizing for above-mentioned technical proposal, according to required limitation reflowing result difference, the internal diameter of bypass passageways 9
(the first honeycomb duct 9c, the internal diameter of the second honeycomb duct 9d are identical, i.e. D2) D2 and mainstream channel 10 internal diameter (descending branch 10a with it is upper
Rise section 10b internal diameters it is identical, i.e. D1) D1 proportional region 0.6~1 so that fluid passes through bypass passageways in reverse flow
The fluid flow of 9 flowings is no less than in synchronization 60% of fluid flow in mainstream channel 10.The internal diameter D2 of bypass passageways 9 with
For the ratio of 10 internal diameter D1 of mainstream channel closer to 1, it is better that device limits fluid reflux effect.
Fig. 1 to Fig. 3 gives utility model device more specifically a kind of application structure figure, and the limitation fluid returns
It further includes babinet to flow device, such as the babinet can be rectangular box, including front panel 1, rear panel 2, left plate 5 and upper top
Plate 3, lower roof plate, front panel 1, the rear panel 2 of babinet are mutually parallel, and the fluid inlet 7, fluid outlet 8 are symmetrically opened in
On the front panel 1, rear panel 2, and fluid inlet 7, fluid outlet 8 be spaced on the front panel 1, rear panel 2 setting it is more
Group, as shown in figure 3, having mainstream channel 10 and bypass passageways 9 between each group of fluid inlet 7, fluid outlet 8.The babinet
It can be applied on vent window, room air flow direction can be made extraneous, outside air is prevented to get in.
According to above structure, the principles of the present invention are further described in conjunction with attached drawing：
When fluid carries out forward flow, fluid enters utility model device by the fluid inlet 7 on front panel 1,
Since the direction at 9 both ends of bypass passageways and the fluid flow direction in mainstream channel 10 at this time are mutually suitable, most fluids
It is flowed through from mainstream channel 10, but the fluid of mainstream channel 10 will not be flowed and be impacted substantially；Fluid is finally from rear panel 2
Fluid outlet 8 flow out the present apparatus.
When fluid carries out reverse flow, fluid enters utility model device by the fluid outlet 8 on rear panel 2.
Since the direction at fluid flow direction at this time and 9 both ends of bypass passageways is on the contrary, therefore segment fluid flow passes through 9 end of bypass passageways
Second interface 9b is entered in bypass passageways 9, and segment fluid flow enters major flow.Into the fluid of bypass passageways 9 from bypass passageways 9
When first interface 9a outflows, flow direction is opposite with fluid flow direction in mainstream channel 10, and two fluids generates turbulent flow collision,
Local resistance is generated, while consuming a large amount of fluid dynamic energies；When multiple bypass passageways 9 are arranged in 10 both sides of mainstream channel, fluid exists
The positions first interface 9a of 9 end of bypass passageways are repeatedly after above-mentioned collision, and fluid dynamic energy is consumed completely, and resistance increases to
So that fluid motion is generated stagnation, prevents the reverse flow of fluid, the final effect for realizing limitation fluid reflux.
Verify example
The control and trapping of pollutant are acted in order to verify the present apparatus, Numerical-Mode mould is established according to actual use situation
The front and back panels size of type, model is 200 × 200mm, thickness 125mm, and fluid-flow rate is 5m/s in verification.Pass through
Analysis to device both sides pressure difference, the difference of the flow resistance (pressure drop) of the different types of flow of two kinds of verification the utility model pair.
Computational domain setting is i.e. length and width dimensions and utility model device front and back panel size phase in 200 × 200 × 225mm cuboids
Together.It is placed in the middle part of computational domain with utility model device, front and back panels are equal with computational domain both sides frontier distance.Computational domain two
Side is set as the inflow of fluid, outflow boundary condition.
Gas flowing involved in this verification is the low speeds flow that Mach number is less than 0.3, therefore can be considered as air can not press
Contracting fluid；The air-flow temperature difference is not considered simultaneously, it can thus be assumed that indoor air flows meet Boussinesq hypothesis.Turbulence model is adopted
It is calculated with Realizablek- ε two-equation models, governing equation obtains k- ε turbulence numbers on the basis of assumed above
Learn each hourly value governing equation of model.Space without viscous item format select Second-order Up-wind format, and using SIMPLE algorithms to from
Scattered equation is solved, when speed term and pressure term residual values are respectively less than 10-3, while the residual values of temperature and component are respectively less than
10-6When, the convergence of governing equation group can be obtained speed Yu the pressure distribution of each position in computational domain at this time.
It is as follows finally to establish governing equation group：
Continuity equation：
The equation of momentum：
Energy equation：
U is air velocity in formula；K is turbulence pulsation kinetic energy；T is indoor air temperature；μ is laminar flow dynamic viscosity coefficient；
μtFor turbulent kinetic viscosity；P is air pressure；ρ is atmospheric density；CpFor pressurization by compressed air specific heat capacity；Q is heat flow density；β
For the fluid volume coefficient of expansion.
As shown in fig. 6, air flows into utility model device, air-flow part in the device from device front panel direction forward direction
Cloth is uniform, from the uniform and stable outflow in the other side.From Fig. 7 local air flows speed vector figure as it can be seen that air-flow is mainly in mainstream channel
Movement, bypass passageways interior air-flow speed is minimum, and the discrepancy of fluid is not present in approximation.As seen from Figure 8, device internal pressure distribution compared with
It is uniform, apparent pressure drop is not present.It is computed, the boundary pressure drop of computational domain both sides is 203.50Pa.
As shown in figure 9, air inversely flows into utility model device from device rear panel direction, air-flow in the device flow by portion
Dynamic uniformity is very poor, and it is relatively low that direction uniformity coefficient is flowed out when gas is flowed out from the other side.From Figure 10 local air flow speed vector figures
As it can be seen that there are higher speed air-flows, mainstream channel interior air-flow to export position in bypass passageways with bypass passageways interior air-flow in bypass passageways
Set generation sharp impacts.From Figure 11 as it can be seen that device interior flow field pressure is distributed, there are apparent barometric gradients, are especially touched in fluid
Occurs apparent pressure drop after hitting.It being computed, the boundary pressure drop of computational domain both sides is 472.96Pa, compared with fluid forward flow,
Pressure drop promotes about 132%, effectively plays the effect of limitation reverse fluid flow.
Claims (10)
1. a kind of limitation fluid scavenging apparatus, including fluid inlet (7) and fluid outlet (8), which is characterized in that the fluid into
It is provided at least one mainstream channel (10) between mouth (7) and fluid outlet (8), the side of the mainstream channel (10) is distributed with
The bypass passageways (9) that both ends are connected to the mainstream channel (10), and the both ends of the bypass passageways (9) are towards the stream
Body exports side where (8).
2. limitation fluid scavenging apparatus as described in claim 1, which is characterized in that the mainstream channel (10) includes end
The descending branch (10a) of interconnection and ascent stage (10b), there are non-zero included angles between descending branch (10a) and ascent stage (10b)；
The end of fluid inlet (7) the connection descending branch (10a), fluid outlet (8) connect the end of ascent stage (10b).
3. limitation fluid scavenging apparatus as claimed in claim 2, which is characterized in that the axial direction of the fluid inlet (7) and institute
The axial direction for stating descending branch (10a) is identical, and the axial direction of the fluid outlet (8) is parallel with the axial direction of fluid inlet (7).
4. limitation fluid scavenging apparatus as claimed in claim 2, which is characterized in that the bypass passageways (9) include first
Honeycomb duct (9c) and the second honeycomb duct (9d) being connected with the end the first honeycomb duct (9c), the first honeycomb duct (9c) and second
Water conservancy diversion is parallel, and the axial length of the first honeycomb duct (9c) is less than the axial length of the second honeycomb duct (9d), the first honeycomb duct
The internal diameter of (9c) is identical as the internal diameter of the second honeycomb duct (9d).
5. limitation fluid scavenging apparatus as claimed in claim 4, which is characterized in that first honeycomb duct (9c) passes through the
One interface (9a) is connected to the mainstream channel (10), and the second honeycomb duct (9d) passes through second interface (9b) and the mainstream
Channel (10) is connected to.
6. limitation fluid scavenging apparatus as claimed in claim 4, which is characterized in that the bypass passageways (9) include setting
The first bypass passageways (9-1) on the downside of the descending branch (10a) and setting on the upside of the ascent stage (10b) second by
Circulation passage (9-2), wherein the first honeycomb duct (9c) in the first bypass passageways (9-1), the second honeycomb duct (9d) axial direction with it is described
The ascent stage axial direction of (10b) is parallel, the axial direction of the first honeycomb duct (9c), the second honeycomb duct (9d) in the second bypass passageways (9-2)
It is parallel with the axial direction of the descending branch (10a).
7. limitation fluid scavenging apparatus as claimed in claim 6, which is characterized in that in first bypass passageways (9-1)
The first honeycomb duct (9c) in second honeycomb duct (9d), the second bypass passageways (9-2) is connected to the descending branch (10a), rises
The junction of section (10b).
8. limitation fluid scavenging apparatus as claimed in claim 6, which is characterized in that in first bypass passageways (9-1)
Angle between second honeycomb duct (9d) and the descending branch (10a) is denoted as α, and the ascent stage (10b) is between horizontal direction
Angle be denoted as θ, then have the θ of α=2.
9. as described in claim 1 limitation fluid scavenging apparatus, which is characterized in that the internal diameter of the bypass passageways (9) with
The proportional region of mainstream channel (10) internal diameter is 0.6~1.
10. limitation fluid scavenging apparatus as described in claim 1, which is characterized in that the limitation fluid scavenging apparatus is also
Including babinet, front panel (1), the rear panel (2) of babinet are mutually parallel, and the fluid inlet (7), fluid outlet (8) are symmetrical
Be opened in the front panel (1), on rear panel (2), and fluid inlet (7), fluid outlet (8) in the front panel (1), below
Interval setting is multigroup on plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820126448.1U CN207830800U (en) | 2018-01-24 | 2018-01-24 | A kind of limitation fluid scavenging apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820126448.1U CN207830800U (en) | 2018-01-24 | 2018-01-24 | A kind of limitation fluid scavenging apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167564A (en) * | 2018-01-24 | 2018-06-15 | 西安建筑科技大学 | A kind of limitation fluid scavenging apparatus |
| CN112490601A (en) * | 2020-11-18 | 2021-03-12 | 深圳麦克韦尔科技有限公司 | Electronic atomization device and power supply assembly |
-
2018
- 2018-01-24 CN CN201820126448.1U patent/CN207830800U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167564A (en) * | 2018-01-24 | 2018-06-15 | 西安建筑科技大学 | A kind of limitation fluid scavenging apparatus |
| CN112490601A (en) * | 2020-11-18 | 2021-03-12 | 深圳麦克韦尔科技有限公司 | Electronic atomization device and power supply assembly |
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