CN107503961A - The large fan for tunnel being easily installed - Google Patents
The large fan for tunnel being easily installed Download PDFInfo
- Publication number
- CN107503961A CN107503961A CN201710598915.0A CN201710598915A CN107503961A CN 107503961 A CN107503961 A CN 107503961A CN 201710598915 A CN201710598915 A CN 201710598915A CN 107503961 A CN107503961 A CN 107503961A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- ventilation duct
- fixed
- seat
- easily installed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 241000883990 Flabellum Species 0.000 claims abstract description 9
- 230000033228 biological regulation Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 210000000481 breast Anatomy 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 9
- 230000030279 gene silencing Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of large fan for tunnel being easily installed, including blower housing, flabellum, motor, rotating shaft, ventilation duct, ground fixing device, ring flange, hanging apparatus and Air Filter, described blower housing are connected by ring flange with ventilation duct；Described flabellum is plugged on inside rotating shaft.The setting of Air Filter of the present invention, be advantageous to prevent dust and other debris from causing damage to blower fan into ventilation duct is interior；The setting of regulating bolt, fixing bolt and through hole, be advantageous to conveniently fix fixed seat on the ground, make it more firm, the convenient height for adjusting blower fan；Mounting hole, fastening bolt, mounting seat, the setting of connecting tube and fastening seat, be advantageous to blower fan can be lifted on the top in tunnel, it is convenient to select suitable mounting means；Clips, regulation button, the setting of stretch hoop and bail, be advantageous to suitable radian can be selected to be hung according to the radian of ventilation duct.
Description
Technical field
The invention belongs to ventilating apparatus for tunnels technical field, more particularly to a kind of large-scale wind for tunnel being easily installed
Machine.
Background technology
Tunnel blower is widely used in the actual use in the tunnels such as water resources dam engineering, highway, railway, subway.Tunnel wind
Machine is in long-term use, and because the dust in environment is more, impeller easily wears and dust stratification, causes fan operation uneven when serious
Weighing apparatus, vibration is larger, and then causes draught fan impeller to damage, and causes failure.
Chinese Patent Application No. is 201620343533.4, a kind of entitled tunnel blower of innovation and creation, including motor,
The rotating shaft connection of impeller and silencing pot, impeller and motor, wheel nose are provided with kuppe, and silencing pot front end is provided with dust cover, institute
Be provided with corona wire on the inside of the dust cover stated, corona wire is woven wire, distance between corona wire and dust cover be present, corona wire by
Insulating support is fixed on the inside of dust cover；Collection electrode is provided with described silencing pot, collection electrode is metal cylinder；Gather dust electricity
Insulating barrier is provided between pole and the barrel of silencing pot；Corona wire and collection electrode are connected with the power supply that individually gathers dust.
But existing tunnel blower also selects suitable mounting means, work depending on the situation there is inconvenient
It is low to make efficiency, it has not been convenient to the problem of being adjusted according to the size of blower fan.
Therefore, invent a kind of large fan for tunnel being easily installed and seem very necessary.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of large fan for tunnel being easily installed, with solution
Certainly existing inconvenience selects suitable mounting means, operating efficiency depending on the situation, it has not been convenient to according to the big of blower fan
It is small to adjust the problem of.A kind of large fan for tunnel being easily installed, including blower housing, flabellum, motor, rotating shaft,
Ventilation duct, ground fixing device, ring flange, hanging apparatus and Air Filter, described blower housing pass through ring flange and ventilation duct
It is connected；Described flabellum is plugged on inside rotating shaft；Described motor is fixed on the bosom position of blower housing；Described
Rotating shaft is arranged on the left and right sides of motor；Described ground fixing device is fixed on the bottom of blower housing and ventilation duct；It is described
Ring flange be fixed on the junction of blower housing and ventilation duct；Described hanging apparatus is connected to blower housing and ventilation duct
Top；Described Air Filter is arranged on the inside of ventilation duct；Described ground fixing device includes expansion bracket, and fixed mount is fixed
Seat, clip, regulating bolt, fixing bolt and through hole；Described expansion bracket is arranged on the inside of fixed mount；Described fixed mount peace
Mounted in the top of fixed seat；Described clip is welded on the top of expansion bracket；Described regulating bolt is arranged on expansion bracket with consolidating
Determine the junction of frame；Described fixing bolt is plugged on the inside of through hole；Described through hole is opened in a left side for the bottom of fixed seat
Right both sides.
Preferably, described hanging apparatus includes mounting hole, fastening bolt, mounting seat, connecting tube, fastens seat, clips,
Regulation button, flexible hoop and bail, described mounting hole are opened in the left and right sides of mounting seat；Described fastening bolt grafting
In the inside of mounting hole；Described is arranged on the top for being fixed on connecting tube；Described connecting tube upper end is mutually welded with mounting seat,
Mutually welded with fastening seat lower end；Described clips are fixed on the left and right sides of fastening seat；Described regulation button is arranged on solid
On fixed hoop；Described flexible hoop is plugged on the inside of clips；Described bail is arranged on the lower end of flexible hoop.
Preferably, described connecting tube specifically uses a diameter of 5cm titanium alloy steel pipe, and described connecting tube is provided with more
Root.
Preferably, described Air Filter is provided with multiple, and the spacing between described Air Filter and Air Filter is 100m.
Preferably, described clip specifically uses U-shaped stainless steel lathe dog, and described clip is provided with multiple.
Preferably, described clips are adapted with flexible hoop, and described clips are identical with the radian of flexible hoop.
Compared with prior art, the present invention has the advantages that：Due to the present invention it is a kind of be easily installed be used for
The large fan in tunnel is widely used in ventilating apparatus for tunnels technical field.Meanwhile beneficial effects of the present invention are：
1. in the present invention, the setting of described Air Filter, be advantageous to prevent dust and other debris enter it is right in ventilation duct
Blower fan causes damage.
2. in the present invention, described regulating bolt, the setting of fixing bolt and through hole, be advantageous to conveniently fix fixed seat
On the ground, make it more firm, the convenient height for adjusting blower fan.
3. in the present invention, described mounting hole, fastening bolt, mounting seat, the setting of connecting tube and fastening seat, be advantageous to energy
Enough tops that blower fan is lifted on to tunnel, it is convenient to select suitable mounting means.
4. in the present invention, described clips, regulation button, the setting of stretch hoop and bail, being advantageous to being capable of basis
The radian of ventilation duct selects the suitable radian to be hung.
5. in the present invention, the setting of described connecting tube, be advantageous to improve stability.
6. in the present invention, described expansion bracket, fixed mount, the setting of clip and fixed seat, be advantageous to conveniently consolidate blower fan
It is scheduled in fixed seat.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the ground fixing device of the present invention.
Fig. 3 is the structural representation of the hanging apparatus of the present invention.
In figure：
1st, blower housing；2nd, flabellum；3rd, motor；4th, rotating shaft；5th, ventilation duct；6th, ground fixing device；61st, expansion bracket；62、
Fixed mount；63rd, fixed seat；64th, clip；65th, regulating bolt；66th, fixing bolt；67th, through hole；7th, ring flange；8th, hanging apparatus；
81st, mounting hole；82nd, fastening bolt；83rd, mounting seat；84th, connecting tube；85th, seat is fastened；86th, clips；87th, regulation button；88、
Flexible hoop；89th, bail；9th, Air Filter.
Embodiment
The present invention is described further below in conjunction with accompanying drawing：
Embodiment：
As shown in accompanying drawing 1 to accompanying drawing 3
A kind of large fan for tunnel being easily installed of present invention offer, including blower housing 1, flabellum 2, motor 3,
Rotating shaft 4, ventilation duct 5, ground fixing device 6, ring flange 7, hanging apparatus 8 and Air Filter 9, described blower housing 1 pass through method
Blue disk 7 is connected with ventilation duct 5；Described flabellum 2 is plugged on inside rotating shaft 4；Described motor 3 is fixed on blower housing 1
Bosom position；Described rotating shaft 4 is arranged on the left and right sides of motor 3；Described ground fixing device 6 is fixed on outside blower fan
The bottom of shell 1 and ventilation duct 5；Described ring flange 7 is fixed on the junction of blower housing 1 and ventilation duct 5；Described lifting dress
Put 8 tops for being connected to blower housing 1 and ventilation duct 5；Described Air Filter 9 is arranged on the inside of ventilation duct 5；Described ground
Fixing device 6 includes expansion bracket 61, fixed mount 62, fixed seat 63, clip 64, regulating bolt 65, fixing bolt 66 and through hole 67；
Described expansion bracket 61 is arranged on the inside of fixed mount 62；Described fixed mount 62 is arranged on the top of fixed seat 63；Described
Clip 64 is welded on the top of expansion bracket 61；Described regulating bolt 65 is arranged on the junction of expansion bracket 61 and fixed mount 62；
Described fixing bolt 66 is plugged on the inside of through hole 67；Described through hole 67 is opened in the left and right two of the bottom of fixed seat 63
Side.
Preferably, described hanging apparatus 8 includes mounting hole 81, fastening bolt 82, mounting seat 83, connecting tube 84, fastening
Seat 85, clips 86, regulation button 87, flexible hoop 88 and bail 89, described mounting hole 81 are opened in a left side for mounting seat 83
Right both sides；Described fastening bolt 82 is plugged on the inside of mounting hole 81；Described mounting seat 83 is fixed on the upper of connecting tube 84
Portion；The described upper end of connecting tube 84 is welded with the phase of mounting seat 83, lower end and the fastening phase of seat 85 welding；Described clips 86 are fixed
In the left and right sides of fastening seat 85；Described regulation button 87 is arranged on clips 86；Described flexible hoop 88 is plugged on solid
Surely the inside of hoop 86；Described bail 89 is arranged on the lower end of flexible hoop 88.
In above-described embodiment, specifically, described connecting tube 84 specifically uses a diameter of 5cm titanium alloy steel pipe, it is described
Connecting tube 84 be provided with more.
In above-described embodiment, specifically, described Air Filter 9 be provided with multiple, described Air Filters 9 and Air Filter 9 it
Between spacing be 100m.
In above-described embodiment, specifically, described clip 64 specifically uses U-shaped stainless steel lathe dog, described clip 64 is set
It is equipped with multiple.
In above-described embodiment, specifically, described clips 86 are adapted with flexible hoop 88, described clips 86 are with stretching
The radian of contracting hoop 88 is identical.
Operation principle
The present invention in the course of the work, it is necessary to by assembling on the ground when adjusted stretch by regulating bolt 65 first
The height of contracting frame 61 and fixed mount 62, then by the frame of ventilation duct 5 on clip 64, then it is securely seated between it with fixing bolt 66
On ground, when situation does not allow blower fan to be erected on ground, regulated using regulation button 87 according to the radian of ventilation duct 5
Clips 86, the radian of stretch hoop 88 and bail 89, blower fan is clamped, finally using fastening bolt 82 and mounting seat 83 by its
It is fixed on the top in tunnel.
Using technical solutions according to the invention, or those skilled in the art is under the inspiration of technical solution of the present invention,
Similar technical scheme is designed, and reaches above-mentioned technique effect, is to fall into protection scope of the present invention.
Claims (6)
1. a kind of large fan for tunnel being easily installed, it is characterised in that what this was easily installed is used for the large-scale of tunnel
Blower fan, including blower housing (1), flabellum (2), motor (3), rotating shaft (4), ventilation duct (5), ground fixing device (6), ring flange
(7), hanging apparatus (8) and Air Filter (9), described blower housing (1) are connected by ring flange (7) with ventilation duct (5)；Institute
It is internal that the flabellum (2) stated is plugged on rotating shaft (4)；Described motor (3) is fixed on the bosom position of blower housing (1)；Institute
The rotating shaft (4) stated is arranged on the left and right sides of motor (3)；Described ground fixing device (6) is fixed on blower housing (1) and led to
The bottom of airduct (5)；Described ring flange (7) is fixed on the junction of blower housing (1) and ventilation duct (5)；Described lifting
Device (8) is connected to the top of blower housing (1) and ventilation duct (5)；Described Air Filter (9) is arranged on the interior of ventilation duct (5)
Portion；Described ground fixing device (6) includes expansion bracket (61), fixed mount (62), fixed seat (63), clip (64), adjusts spiral shell
Bolt (65), fixing bolt (66) and through hole (67)；Described expansion bracket (61) is arranged on the inside of fixed mount (62)；Described consolidates
Determine the top that frame (62) is arranged on fixed seat (63)；Described clip (64) is welded on the top of expansion bracket (61)；Described tune
Section bolt (65) is arranged on the junction of expansion bracket (61) and fixed mount (62)；Described fixing bolt (66) is plugged on through hole
(67) inside；Described through hole (67) is opened in the left and right sides of the bottom of fixed seat (63).
2. the large fan for tunnel being easily installed as claimed in claim 1, it is characterised in that described hanging apparatus
(8) include mounting hole (81), fastening bolt (82), mounting seat (83), connecting tube (84), fastening seat (85), clips (86), adjust
Button (87) is saved, flexible hoop (88) and bail (89), described mounting hole (81) are opened in the left and right sides of mounting seat (83)；
Described fastening bolt (82) is plugged on the inside of mounting hole (81)；Described mounting seat (83) is fixed on the upper of connecting tube (84)
Portion；Described connecting tube (84) upper end is mutually welded with mounting seat (83), and lower end is mutually welded with fastening seat (85)；Described clips
(86) it is fixed on the left and right sides of fastening seat (85)；Described regulation button (87) is arranged on clips (86)；Described stretches
Contracting hoop (88) is plugged on the inside of clips (86)；Described bail (89) is arranged on the lower end of flexible hoop (88).
3. the large fan for tunnel being easily installed as claimed in claim 2, it is characterised in that described connecting tube
(84) a diameter of 5cm titanium alloy steel pipe is specifically used, described connecting tube (84) is provided with more.
4. the large fan for tunnel being easily installed as claimed in claim 1, it is characterised in that described Air Filter
(9) spacing being provided between multiple, described Air Filter (9) and Air Filter (9) is 100m.
5. the large fan for tunnel being easily installed as claimed in claim 1, it is characterised in that described clip (64)
U-shaped stainless steel lathe dog specifically is used, described clip (64) is provided with multiple.
6. the large fan for tunnel being easily installed as claimed in claim 2, it is characterised in that described clips
(86) it is adapted with flexible hoop (88), described clips (86) are identical with the radian of flexible hoop (88).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598915.0A CN107503961A (en) | 2017-07-21 | 2017-07-21 | The large fan for tunnel being easily installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598915.0A CN107503961A (en) | 2017-07-21 | 2017-07-21 | The large fan for tunnel being easily installed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503961A true CN107503961A (en) | 2017-12-22 |
Family
ID=60688775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710598915.0A Pending CN107503961A (en) | 2017-07-21 | 2017-07-21 | The large fan for tunnel being easily installed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503961A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930660A (en) * | 2018-07-18 | 2018-12-04 | 杭州新融方科技有限公司 | A kind of low noise intelligent pipeline blower and its operating method based on Internet of Things |
| CN110219813A (en) * | 2019-04-28 | 2019-09-10 | 山西尚风科技股份有限公司 | A kind of ventilation duct power device |
| CN110454209A (en) * | 2019-08-09 | 2019-11-15 | 苏州中车建设工程有限公司 | interval tunnel jet fan installation and maintenance platform and installation and maintenance method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2851664Y (en) * | 2005-10-17 | 2006-12-27 | 天津市通风机厂 | Jet fan equipped with once moulded impeller hub |
| CN204024691U (en) * | 2014-09-01 | 2014-12-17 | 浙江马尔风机有限公司 | Highway tunnel special fan |
| CN106122597A (en) * | 2016-08-19 | 2016-11-16 | 中国船舶重工集团公司第七〇九研究所 | A kind of adjustable pipeline elasticity with limit function is propped up and is hung |
| CN205876393U (en) * | 2016-04-21 | 2017-01-11 | 尹晓普 | A mounting cable duct gallows structure for subway tunnel |
| CN207080390U (en) * | 2017-07-21 | 2018-03-09 | 天津中隧通风机有限公司 | A kind of large fan for tunnel being easily installed |
-
2017
- 2017-07-21 CN CN201710598915.0A patent/CN107503961A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2851664Y (en) * | 2005-10-17 | 2006-12-27 | 天津市通风机厂 | Jet fan equipped with once moulded impeller hub |
| CN204024691U (en) * | 2014-09-01 | 2014-12-17 | 浙江马尔风机有限公司 | Highway tunnel special fan |
| CN205876393U (en) * | 2016-04-21 | 2017-01-11 | 尹晓普 | A mounting cable duct gallows structure for subway tunnel |
| CN106122597A (en) * | 2016-08-19 | 2016-11-16 | 中国船舶重工集团公司第七〇九研究所 | A kind of adjustable pipeline elasticity with limit function is propped up and is hung |
| CN207080390U (en) * | 2017-07-21 | 2018-03-09 | 天津中隧通风机有限公司 | A kind of large fan for tunnel being easily installed |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930660A (en) * | 2018-07-18 | 2018-12-04 | 杭州新融方科技有限公司 | A kind of low noise intelligent pipeline blower and its operating method based on Internet of Things |
| CN108930660B (en) * | 2018-07-18 | 2020-11-13 | 杭州新融方科技有限公司 | Low-noise intelligent pipeline fan based on Internet of things and operation method thereof |
| CN110219813A (en) * | 2019-04-28 | 2019-09-10 | 山西尚风科技股份有限公司 | A kind of ventilation duct power device |
| CN110454209A (en) * | 2019-08-09 | 2019-11-15 | 苏州中车建设工程有限公司 | interval tunnel jet fan installation and maintenance platform and installation and maintenance method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107503961A (en) | The large fan for tunnel being easily installed | |
| CN207080390U (en) | A kind of large fan for tunnel being easily installed | |
| CN203731567U (en) | Anion purifier | |
| CN207229420U (en) | A kind of high-performance centrifugal blower | |
| CN210980145U (en) | Adjustable air source heat pump solid adsorption dehumidifier | |
| CN104389745B (en) | Utilize solar energy and the watering device of wind energy | |
| CN207229430U (en) | Ventilation blower energy saving device for ventilation | |
| CN207383045U (en) | A kind of intelligent photovoltaic agricultural greenhouse | |
| CN207656128U (en) | A kind of gas heater processing assembly or fitting table | |
| CN108322152A (en) | A kind of novel desert photovoltaic plant technology | |
| CN205136085U (en) | Solar fan | |
| CN113170716A (en) | Full-automatic sand prevention induced air water storage irrigation device | |
| CN109441856A (en) | A kind of dedicated cleaning blower of dust pollution | |
| CN106885284A (en) | Lampblack absorber and flue gas deoiling method | |
| CN208845403U (en) | A kind of axial flow blower | |
| CN208124146U (en) | A kind of solar energy scenery lamp of high conversion | |
| CN208364484U (en) | Unilateral side support centrifugal blower entrance constant-current stabilizer | |
| CN208475549U (en) | A kind of rainwater-proof window fresh air system | |
| CN207080425U (en) | A kind of large fan in the tunnel of energy-conserving and environment-protective | |
| CN207887361U (en) | A kind of accumulatingdust type cyclone separator | |
| CN207080391U (en) | A kind of multi-functional large fan for tunnel | |
| CN206571710U (en) | A kind of anti-backflow exhaust fan | |
| CN207089102U (en) | A kind of easy-to-mount caravan canopy support frame | |
| CN204419633U (en) | Length-adjustable temperature-dropping fan | |
| CN211007771U (en) | Novel energy-saving building with underground water for adjusting temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |