CN207776076U - A kind of eddy flow cut-off equipment - Google Patents
A kind of eddy flow cut-off equipment Download PDFInfo
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- CN207776076U CN207776076U CN201721733188.6U CN201721733188U CN207776076U CN 207776076 U CN207776076 U CN 207776076U CN 201721733188 U CN201721733188 U CN 201721733188U CN 207776076 U CN207776076 U CN 207776076U
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- Prior art keywords
- sump
- eddy flow
- flow valve
- outlet
- fluid
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- 239000012530 fluid Substances 0.000 claims abstract description 61
- 230000008676 import Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008595 infiltration Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 description 14
- 238000009434 installation Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Valve Housings (AREA)
Abstract
The utility model discloses a kind of eddy flow cut-off equipments.Eddy flow valve is fixedly mounted in sump, and sump is imported and exported equipped with sump, and eddy flow valve is equipped with fluid inlet and outlet, and eddy flow valve outlet exports the perforation that connects with sump；Eddy flow valve is mainly that cylindrical shell body connection truncated cone-shaped outer housing is formed, and cylindrical shell body is made of three fan-shaped cylinders and square cylinder, and cylinder opens slot as valve import on the outside of square cylinder；Sump is rectangular parallelepiped structure, and sump import and sump outlet are opened in respectively on symmetrical both sides side wall, and the central axes of inlet and outlet overlap, and the central axes of eddy flow valve fluid outlet are overlapped with the central axes that sump is imported and exported.The utility model can be centrally formed the air column that shuts off in eddy flow cut-off equipment, air column diameter of shutting off is controlled by water level height, improve device mounting stability, reach effect of shutting off, reduce downstream infiltration, leak and spilling water phenomenon caused by different high-low water level differences, slow down siltation to block, improves pipeline flow ability.
Description
Technical field
Shut off control device the utility model is related to a kind of flow, more particularly, to a kind of eddy flow cut-off equipment.
Background technology
Water is Source of life and the important foundation stone of the national economic development, to rational development of water resources utilization and water ring
Border is protected, and is the important leverage of national sustainable development, once water resource imbalance of supply and demand or water environment meet with being stained significantly and leading
Cause socio-economic development lag.Recently as the rapid expansion of city numbers, city size and urban population, municipal sewage
Discharge capacity increasingly increases, and sanitary sewage discharge capacity has been more than industrial wastewater discharge amount.In order to realize the quick drain of sewage, in recent years
Come, China has been constructed and put into operation a collection of large-scale wastewater treatment plant and relatively intensive urban sewage pipe network in succession.But the object of sewage
Reason, chemical composition are extremely complex, and contain a large amount of pollutants, including the silt class of different size scale and suspension fiber class object
Matter is a kind of solid-liquid two-phase, solid phase multicomponent fluid.Therefore, in the drainage pipeline in numerous cities, coincidentally all occur
Different degrees of siltation problem.Due to the presence of sediment, in the presence of no larger external force so that the draining of drainpipe
Inferior capabilities, and will appear infiltration, leak and overflow sump the case where.Meanwhile during heavy showers, also it is unfavorable for rainwater
Orderly discharge.
Although in recent years, having had been developed for a series of more mature dredging technologies and desilting equipment and having obtained extensively
Using still, still lacking economic and practical dredging technology and desilting equipment at present, dredging work is still a problem.Moreover,
Equipment needed for drainage pipeline dredging is expensive, and operating cost is high, and dredging work has certain risk in some cases,
It also causes damages simultaneously to ambient enviroment.In developing country, due to being limited by financial horizontal and technical conditions so that row
The dredging work of waterpipe becomes very difficult.
Therefore, it is necessary to study adaptive eddy flow cut-off equipment, according to the mixed flow characteristic of sewage in pipeline, fluid is utilized
Mechanical knowledge allows it to generate high-speed rotational from structure, by the whirl control technology of height, control sewage or
Rain dirt pipe goes out flow, shuts off to sewage or rain dirt pipeline, and the sewage under shutting off introduces Vatch basin, reduces sewage
The load for the treatment of plant；By solid suspension Accelerating Removal, the concentration of solid suspension in the duct is reduced, slows down siltation and blocks,
Or by accumulation of pollutants in Vatch basin, easy cleaning, to improve pipeline flow ability.
Utility model content
In order to overcome the shortcomings of in background technology, the purpose of this utility model is to provide a kind of eddy flow cut-off equipment,
It is right using fluid mechanics knowledge when without carrying out secondary excavation to urban underground water drainage pipe net without providing the external impetus energy
Fluid carries out decontamination of shutting off, when fluid motion generates whirl, by the solid matter wherein carried with fluid spiral line
Rotary motion is taken out of；High-speed rotational is generated in fluid outlet, pipeline is rinsed, plays automatic cleaning sewage impurity accumulation
Ability；Encounter drainage inner stream flow it is very big when, greatly improve hypsography low-lying area contaminant removal effectiveness, avoid infiltration, leakage
The possibility that water and spilling water occur.
The technical solution adopted in the utility model is：
The utility model includes eddy flow valve and sump, and eddy flow valve is fixedly mounted in sump, and sump is provided only with one
A sump import and a sump outlet, eddy flow valve are provided only with a fluid inlet and a fluid outlet, eddy flow valve
Fluid outlet exports the perforation that connects with the sump of sump.
The eddy flow valve is mainly to be formed to have in common in one end of cylindrical shell body connection truncated cone-shaped outer housing
The shell structure of chamber, the outside diameter D2 of truncated cone-shaped outer housing and the diameter D3 of cylindrical shell body are equal；Cylindrical shell body
It is to be made of the fan-shaped cylinder of three 1/4 circular arcs and a square cylinder, square cylinder is whole towards a horizontal outside cylinder
Body opens fluid inlet of the slot as eddy flow valve, fluid inlet horizontally toward, the other end center opened round of cylindrical shell body
Fluid outlet of the straight slot as eddy flow valve.
The eddy flow valve outer wall is set there are three lug, and three earholes of three lugs are connected to by stud and nut
The inner wall of sump so that eddy flow valve is mounted in sump.
The utility model realizes eddy flow by sump and eddy flow valve and shuts off jointly, specifically also includes the collection of sump
Well import and sump outlet, fluid inlet and the fluid outlet setting of the truncated cone-shaped structure of eddy flow valve and eddy flow valve.
The sump is rectangular parallelepiped structure, and sump import and sump outlet are opened in symmetrical both sides side respectively
On wall, sump import is in same level and coaxially arranged positioned at being exported with sump so that sump import and sump
The central axes M2 of outlet is overlapped, and sump import/sump of the central axes M1 of the fluid outlet of eddy flow valve and sump goes out
The central axes M2 of mouth is overlapped.
It is close to install by sealing rubber ring between the fluid outlet of eddy flow valve and the outlet of sump.
The fluid inlet area of section A1 of the eddy flow valve is more than or equal to fluid outlet area of section A2, is flowed in eddy flow valve
Body outlet diameter D1 is identical as the sump outlet diameter of sump, and the length H of fluid inlet vertically is less than or equal to circle
The diameter D3 of cylindrical shell cylindrical shell body, truncated cone-shaped outer housing end diameter D2 is equal with eddy flow valve outlet diameter D1, circle
The angle of the round platform inclination alpha of platform shape outer housing is between 30~60 °.
The utility model realizes that eddy flow shuts off and needs to use on eddy flow valve and sump integral installation.
The utility model has an advantageous effect in that：
The utility model is after fluid enters sump, by the variation for the Well Water Level height that catchments, in eddy flow cut-off equipment
It is centrally formed the air column that shuts off, the size for the air column diameter that shuts off by water level height control is shut off by the reduction of truncated cone-shaped structure
Air column reduces vibration to the impact force of device wall surface, improves device mounting stability, is controlled eventually by the size for the diameter that shuts off
Rate of discharge reaches effect of shutting off, and reduces downstream infiltration, leak and spilling water phenomenon caused by different high-low water level differences.
So that it is generated high-speed rotational from structure, shut off by eddy flow, the well conduit that shuts off during controlling heavy showers goes out
The rainwater of mouth goes out flow, reduces the load of sewage treatment plant, reduces the volumetric concentration of solid suspension in Vatch basin, slows down
Siltation blocks, and improves pipeline flow ability.
Description of the drawings
Fig. 1 is the front view of the utility model eddy flow cut-off equipment.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the sectional view P-P of Fig. 1.
Fig. 5 is the tomograph of the utility model eddy flow cut-off equipment.
Fig. 6 is the front view of the utility model eddy flow cut-off equipment installation sump.
Fig. 7 is the left view of the utility model eddy flow cut-off equipment installation sump.
Fig. 8 is the vertical view of the utility model eddy flow cut-off equipment installation sump.
Fig. 9 is the tomograph of the utility model eddy flow cut-off equipment installation sump.
Figure 10 is the assembling front view of the utility model eddy flow cut-off equipment and sump.
Figure 11 is the assembly left view of the utility model eddy flow cut-off equipment and sump.
Figure 12 is the assembling plan view of the utility model eddy flow cut-off equipment and sump.
In figure：1, eddy flow cut-off equipment, 2, fluid inlet, 3, fluid outlet, 4, installation earhole 5, cylindrical shell body, 6,
Truncated cone-shaped outer housing, 7, circular hole, 8, sump import, 9, sump outlet, 10, stud, 11, nut, 12, sealing ring, 13, collection
Well, D1, fluid outlet diameter, D2, truncated cone-shaped outer housing upper end circular cross section diameter, D3, cylindrical shell body outer end are straight
Diameter, L1, cylindrical shell body width, H, inlet height, δ, eddy flow cut-off equipment wall thickness, Δ, sump wall thickness, M1, eddy flow are cut
The central axes of device outlet circular section are flowed, M2, sump export the central axes of circular section.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2, Fig. 3, shown in 4, the utility model specific implementation includes eddy flow valve 1 and sump 13, eddy flow valve 1
It is fixedly mounted in sump 13, sump 13 is equipped with sump import 8 and sump outlet 9, and eddy flow valve 1 is provided only with a stream
Body import 2 and a fluid outlet 3, the outlet 3 of eddy flow valve 1 connect perforation with the sump of sump 13 outlet 9.Solid-liquid two
Phase fluid enters sump 13 by the sump import 8 of sump 13, and then the fluid inlet 2 through eddy flow valve 1 enters eddy flow
Valve 1 flows out behind the sump outlet 9 of the fluid outlet 3, sump 13 of eddy flow valve 1.
Eddy flow valve 1 is mainly to be formed with common inner cavity in one end of cylindrical shell body 5 connection truncated cone-shaped outer housing 6
Shell structure, the outside diameter D2 of truncated cone-shaped outer housing 6 and the diameter D3 of cylindrical shell body 5 are equal；Cylindrical shell body 5
It is to be made of the fan-shaped cylinder of three 1/4 circular arcs and a square cylinder, the rectangular length of side is identical with fan-shaped radius, and is
The thickness of the half of the diameter D3 of cylindrical shell body 5, fan-shaped cylinder and a square cylinder is identical to be used as cylindrical shell body 5
Thickness L1, square cylinder integrally opens fluid inlet 2 of the slot as eddy flow valve 1, fluid towards a horizontal outside cylinder
Import 2 horizontally toward, the fluid outlet 3 of the other end center opened round straight slot of cylindrical shell body 5 as eddy flow valve 1.
1 outer wall of eddy flow valve is set there are three lug, and three lugs are located at the cylinder that fluid inlet 2 is not arranged in specific implementation
The side of shape outer housing 5, three earholes 4 of three lugs are connected to the inner wall of sump 13 by stud 10 and nut 11,
So that eddy flow valve 1 is mounted in sump 13.
Sump 13 is rectangular parallelepiped structure, and sump import 8 and sump outlet 9 are opened in symmetrical both sides side wall respectively
On, sump import 8 is in 9 same levels and coaxially arranged positioned at being exported with sump so that sump import 8 and sump
The central axes M2 of outlet 9 is overlapped, and the central axes M1 of the fluid outlet 3 of eddy flow valve 1 and the sump import 8/ of sump 13 collect
The central axes M2 of well outlet 9 is overlapped.The wall thickness thickness of sump 13 is Δ, Δ=5~15mm.
Sump 13 is equipped with the circular hole 7 for the cooperation installation of 1 earhole 4 of eddy flow valve, earhole 4 and sump on eddy flow valve 1
Circular hole 7 in 13 is fixedly mounted by stud 10 and nut 11.
It is close to install by sealing rubber ring 12 between the outlet 3 of eddy flow valve 1 and the sump of sump 13 outlet 9.
The 2 area of section A1 of import of eddy flow valve 1 is more than or equal to 3 area of section A2 of fluid outlet, and fluid goes out in eddy flow valve 1
3 diameter D1 of mouth are identical as the sump of sump 13 9 diameters of outlet, and the length H of fluid inlet 2 vertically is less than or equal to circle
The diameter D3 of cylindrical outer cover body 5,6 end diameter D2 of truncated cone-shaped outer housing is equal with the 3 diameter D1 of fluid outlet of eddy flow valve 1, circle
The angle of the round platform inclination alpha of platform shape outer housing 6 is between 30~60 °.
The 2 rectangular cross-section section of fluid inlet of eddy flow valve 1, area of section A1, A1=L1 × H；The fluid of eddy flow valve 1
Outlet 3 is a circular cross-section, a diameter of D1, area of section A2, A2=π × D1 × D1/4.
The 6 major diameter end face B of truncated cone-shaped outer housing is the end face B with cylindrical shell body 5 without fluid outlet 3
Face communicates, and two face areas are equal, and inclination alpha is 6 crest line l of truncated cone-shaped outer housing and 6 lower face of truncated cone-shaped outer housing
The section of the angle of B, truncated cone-shaped outer housing 6 is a trapezoid cross section.
Cylindrical shell body 5 is not one complete cylindrical, wherein the outer housing 5 for having 3/4 is three fan-shaped cylinders
The shell of composition, it is rectangular section L1 × H that 1/4 outer housing 5, which is used for being arranged the outer housing of fluid inlet 2,1/4, along diameter
The directions D3 are stretched to the formation of C points, finally carry out pumping shell and handle to obtain, and the thickness of outer housing 5 is δ, δ=5~15mm.
The operation principle and the course of work of the utility model are as follows：
1) after fluid, which enters through pipeline, enters sump or Vatch basin, with the rising of water level, according to this practicality
The structure of new design forms the sky that shuts off by hydrodynamics and aerodynamic principle in eddy flow cut-off equipment center
Air column slowly becomes larger with the diameter of the rising of the water level air column, is finally reached a stable diameter, passes through the air that shuts off
Column carries out output fluid flow control, reaches effect of shutting off.
2) by changing the inclination alpha of truncated cone-shaped outer housing, between the value of α is 30~60 °, air column generation of shutting off is reduced
Rotating vortex, the huge outer housing vibration brought, ensures the stability of device normal operation installation.α takes between 30~60 °
Value while reducing air column vibration, reduces device full of the dead weight after fluid.
3) by changing inlet height H, it can design according to demand, generate the sump height of water level for the air column that shuts off, determine
Demand closure discharge size.
4) intake area is more than or equal to outlet captured area, it is ensured that and it is when fluid flow is little in the duct,
In the case of need not shutting off, ensures as the current intelligence of normal pipeline diameter, carried out without having just enter into device in fluid
Shut off, while not influencing the negotiability of large particle；Go out depth of section H and be less than cylindrical shell body diameter D3, is to limit
The case where exit area processed is far longer than exit area, while being conducive to determination and the processing peace of device aperture position
Dress.
5) it at present apparatus outlet 3 needs that rubber seal is installed, effect of shutting off can be increased.
The embodiments of the present invention are as follows：
Embodiment 1
According to eddy flow cut-off equipment provided by the utility model, including an import 2, one outlet 3, outlet 3 are located at rotation
On the center line for flowing the cylindrical outer cover body of cut-off equipment 1.Import rectangular cross-section, area A1=34500mm2, outlet is
Circle, area A2=31400mm2。
Cylindrical shell body 5 is not a complete cylindrical structure, and wherein cylindrical structure only occupies outer housing
3/4, remaining 1/4 is the import 2 of rectangular section, and the width of rectangular section is small for the width L1, a height of H, H of cylindrical shell body 5
In the diameter D3 equal to cylindrical shell body, rectangular section area is more than or equal to the area of section of outlet 3.
By to installation utility model device and do not install the Vatch basin pipe outlet flow of utility model device into
Row compares, and following result is obtained by numerical simulation：
Table 1 installs the performance comparison after utility model device
As it can be seen that utility model device shuts off effect clearly in upper table, rate of discharge is greatly reduced, is improved
Shut off efficiency.
Numerical simulation is carried out by the fluid boundary condition to different inlet velocities, still there is good combined closure system,
Illustrate the present apparatus there is versatility wherein stabilization of export flow to refer to outlet stream of the water level not when changing in sump
Amount.
Table 1 installs the performance comparison after utility model device
As it can be seen that utility model device all has excellent effect of shutting off under different in flow rate in upper table, and routine is shut off
There is no such effects for valve.
Comparative situation 1
To utility model device and conventional cut-off equipment, (wherein, conventional cut-off equipment refers to utility model device
In be not provided with the cut-off equipment that truncated cone-shaped outer housing only has cylindrical shell body) device wall pressure intensity in sump into
Row compares：Following result is obtained by numerical simulation：
Table 2 installs the device wall pressure intensity after utility model device
By to utility model device, (wherein, conventional cut-off equipment refers to the utility model with conventional cut-off equipment
There is no the cut-off equipment of inclination alpha round platform in device) the device wall pressure intensity in sump is compared, it has been found that this
The maximum wall pressure intensity that utility model device is subject to is obviously reduced, and average wall pressure intensity is also smaller, can drop in this way
The vibration that low hydraulic blow generates, effectively improves the service life of device.
Comparative situation 2
Pass through not pipeline when with on straight line of the import central axes to utility model device axis M1 and sump
Rate of discharge is compared, and following result is obtained by numerical simulation：
The performance comparison of 3 utility model device difference installation site of table
By the performance comparison to utility model device difference installation site, the central axes of utility model device are found
M1 is overlapped with the central axes M2 of sump entry/exit, and efficiency of shutting off is best, while such installation is conducive to tie in practical applications
Structure designs.
Therefore new by this practicality with the rising for the Well Water Level that catchments after fluid enters sump according to above-mentioned implementation
The rational structure design of type and dimension scale limit, and the vortex that rotational structure is will produce at eddy flow cut-off equipment center is shut off gas
Column is shut off by the shut off size of air column diameter of eddy flow cut-off equipment center, and the well conduit that shuts off during controlling heavy showers goes out
The rainwater of mouth goes out flow, reduces the load of sewage treatment plant, reduces the volumetric concentration of solid suspension in Vatch basin, slows down silt
Product blocks, and improves application of the pipeline flow ability in sewage conduct.
Claims (6)
1. a kind of eddy flow cut-off equipment, it is characterised in that：Including eddy flow valve (1) and sump (13), eddy flow valve (1) is fixedly mounted
In sump (13), sump (13) is equipped with sump import (8) and sump outlet (9), and eddy flow valve (1) is provided only with one
Fluid inlet (2) and a fluid outlet (3), the fluid outlet (3) of eddy flow valve (1) are exported with the sump of sump (13)
(9) connect perforation.
2. a kind of eddy flow cut-off equipment according to claim 1, it is characterised in that：The eddy flow valve (1) mainly exists
One end connection truncated cone-shaped outer housing (6) of cylindrical shell body (5) forms the shell structure with common inner cavity, truncated cone-shaped shell
The outside diameter D2 of body (6) and the diameter D3 of cylindrical shell body (5) are equal；Cylindrical shell body (5) is by three 1/4 circular arcs
Fan-shaped cylinder and square cylinder constitute, square cylinder integrally opens slot as eddy flow towards a horizontal outside cylinder
The other end center opened round straight slot of the fluid inlet (2) of valve (1), cylindrical shell body (5) goes out as the fluid of eddy flow valve (1)
Mouth (3).
3. a kind of eddy flow cut-off equipment according to claim 1, it is characterised in that：Described eddy flow valve (1) outer wall is equipped with
Three lugs, three earholes (4) of three lugs are connected to the inner wall of sump (13) by stud (10) and nut (11),
So that eddy flow valve (1) is mounted in sump (13).
4. a kind of eddy flow cut-off equipment according to claim 1, it is characterised in that：The sump (13) is cuboid
Structure, sump import (8) and sump outlet (9) are opened in respectively on symmetrical both sides side wall, and sump import (8) is located at
It is exported with sump in (9) same level and coaxially arranged so that the axis of sump import (8) and sump outlet (9)
Line M2 is overlapped, and sump import (8)/sump of the central axes M1 of the fluid outlet (3) of eddy flow valve (1) and sump (13)
The central axes M2 for exporting (9) is overlapped.
5. a kind of eddy flow cut-off equipment according to claim 1, it is characterised in that：The fluid of the eddy flow valve (1) goes out
It is close to install by sealing rubber ring (12) between the sump of mouth (3) and sump (13) outlet (9).
6. a kind of eddy flow cut-off equipment according to claim 2, it is characterised in that：The fluid of the eddy flow valve (1) into
Mouthful (2) area of section A1 is more than or equal to fluid outlet (3) area of section A2, fluid outlet (3) diameter D1 and collection in eddy flow valve (1)
Sump outlet (9) diameter of well (13) is identical, and the length H of fluid inlet (2) vertically is less than or equal to cylindrical outer
The diameter D3 of shell (5), truncated cone-shaped outer housing (6) end diameter D2 is equal with eddy flow valve (1) fluid outlet (3) diameter D1, circle
The angle of the round platform inclination alpha of platform shape outer housing (6) is between 30~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733188.6U CN207776076U (en) | 2017-12-13 | 2017-12-13 | A kind of eddy flow cut-off equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733188.6U CN207776076U (en) | 2017-12-13 | 2017-12-13 | A kind of eddy flow cut-off equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207776076U true CN207776076U (en) | 2018-08-28 |
Family
ID=63231117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721733188.6U Expired - Fee Related CN207776076U (en) | 2017-12-13 | 2017-12-13 | A kind of eddy flow cut-off equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207776076U (en) |
-
2017
- 2017-12-13 CN CN201721733188.6U patent/CN207776076U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |