CN208487738U - A kind of ventilating and exhausting device of pipe gallery - Google Patents
A kind of ventilating and exhausting device of pipe gallery Download PDFInfo
- Publication number
- CN208487738U CN208487738U CN201821112756.5U CN201821112756U CN208487738U CN 208487738 U CN208487738 U CN 208487738U CN 201821112756 U CN201821112756 U CN 201821112756U CN 208487738 U CN208487738 U CN 208487738U
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- China
- Prior art keywords
- fixedly connected
- pipe
- water
- ventilating
- clean
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- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000009423 ventilation Methods 0.000 claims abstract description 37
- 238000000746 purification Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 21
- 239000003546 flue gas Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 15
- 239000007789 gas Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 5
- 230000000505 pernicious effect Effects 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
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- Ventilation (AREA)
Abstract
The utility model provides a kind of ventilating and exhausting device of pipe gallery, it is related to field of ventilation equipment, including ventilation shaft, left side at the top of the ventilation shaft is fixedly connected with connecting pipe, left side at the top of the connecting pipe is fixedly connected with wind pipe, the ventilation shaft is internally provided with draught fan, and the outside of the draught fan is fixedly connected with ventilation shaft, is fixedly connected with connecting rod at the top of the wind pipe.The ventilating and exhausting device of the pipe gallery, in the gas after needing to discharge some fire, it is rotated by draught fan, it can speed up the process of exhaust, so that exhaust effect is more preferable, flue gas flows into connecting pipe from ventilation shaft, open water pump, water pump sprays the water of cistern interior by outlet pipe, water pipeline and sprinkler head to flue gas, can effectively purify the volume of smoke in flue gas with water-soluble pernicious gas, and can carry out cooling processing to the flue gas after fire.
Description
Technical field
The utility model relates to ventilation equipment technical field, specially a kind of ventilating and exhausting device of pipe gallery.
Background technique
Pipe gallery is exactly the comprehensive corridor of underground urban duct.I.e. Urban Underground build a tunnel space, by electric power,
Communication, the various utilities pipelines such as combustion gas, heat supply and plumbing are integrated in one, and are equipped with special access hole, hoisting port and monitoring system
System implements unified planning, Uniting, unified construction and management, is the important infrastructure for ensureing city operations.But on ground
In the case that the comprehensive corridor of lower urban duct generates fire, the fire compartment inside pipe gallery is by its fire of enclosed burning
After extinguishing, needs to open ventilation equipment and discharge fume, then the flue gas being discharged will have an impact external pedestrian and driving, and
And also pollute the environment, it is not convenient enough.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of ventilating and exhausting device of pipe gallery, solves
The problems mentioned above in the background art.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of ventilation of pipe gallery
Exhaust apparatus, including ventilation shaft, the left side at the top of the ventilation shaft are fixedly connected with connecting pipe, the connecting pipe top
Be fixedly connected with wind pipe on the left of portion, the ventilation shaft is internally provided with draught fan, the draught fan it is outer
Side is fixedly connected with ventilation shaft, and connecting rod is fixedly connected at the top of the wind pipe, and the top of the connecting rod is fixed
It is connected with rain cover, the two sides of the wind pipe and is located at below rain cover and is fixedly connected with ventilation shutter.
Preferably, the right side at the top of the connecting pipe is fixedly connected with water storage box, and the right side of the water storage box is fixed to be connected
It is connected to filler pipe, is fixedly connected with water pump at the top of the water storage box.
Preferably, the water inlet of the water pump and the water outlet of water storage box are fixedly connected with connection water pipe, the water
The water outlet of pump is fixedly connected with outlet pipe, and the outlet pipe is fixedly connected with water pipeline far from one end of water pump, described
The bottom of water pipeline is fixedly connected with sprinkler head.
Preferably, the bottom of the connecting pipe and be located at sprinkler head below be fixedly connected with catch basin, the collection
The bottom of sink is fixedly connected with blow-off line, is fixedly connected with filter screen at the top of the blow-off line.
Preferably, purification device is fixedly connected on the left of the connecting pipe, the inside of the purification device is fixed to be connected
It is connected to partition, servo motor is fixedly connected at the top of the partition, the servo motor is connected by the rotating shaft transmission at the top of it
It is connected to first gear, drive shaft is provided on the right side of the first gear, the second tooth is sequentially connected at the top of the drive shaft
Wheel, the first gear and second gear are intermeshed.
Preferably, first bearing seat is fixedly connected on the partition, the two sides of the bottom of the partition are fixedly connected with
Connecting column, the bottom end of the connecting column are fixedly connected with second bearing seat, and the second bearing seat is internally provided with clearing axis,
The bottom end of the drive shaft is through first bearing seat and is sequentially connected with first bevel gear, and the two sides of the first bevel gear are nibbled
Conjunction has second bevel gear, and side of the second bevel gear far from first bevel gear and clearing axis are sequentially connected, the clearing axis
It is external respectively be fixedly connected with the first clean-up frame and the second clean-up frame, between first clean-up frame and the second clean-up frame respectively
It is provided with the first dedusting strainer and the second dedusting strainer, is fixedly connected on the inside of first clean-up frame and the second clean-up frame
Clear up bristle.
(3) beneficial effect
The utility model provides a kind of ventilating and exhausting device of pipe gallery.Have it is following the utility model has the advantages that
1, the ventilating and exhausting device of the pipe gallery passes through wind of divulging information in the gas after needing to discharge some fire
Fan rotation, can speed up the process of exhaust, so that exhaust effect is more preferable, flue gas flows into connecting pipe from ventilation shaft, open
Water pump, water pump spray the water of cistern interior by outlet pipe, water pipeline and sprinkler head to flue gas, can be effective
By in flue gas volume of smoke and water-soluble pernicious gas purify, and can be carried out at cooling to the flue gas after fire
Reason guarantees that the gas temperature of discharge will not be too high, and the flue gas after preliminary purification enters the inside of purification device, filters in the first dedusting
Under the action of net and the second dedusting strainer, secondary filter can be carried out to flue gas, the residual smoke in flue gas is removed,
So that clean-up effect is more preferable, the gas after the completion of purifying is discharged from the ventilation shutter of wind pipe two sides, can be effective
Pernicious gas and flue dust are effectively purified so that the gas of discharge will not influence extraneous row human and environment so that
It is more convenient to use for the equipment, practical.
2, the ventilating and exhausting device of the pipe gallery is rotated, servo motor band by the servo motor inside purification device
Dynamic first gear rotation, first gear drive second gear rotation, and second gear drives drive shaft turns, and drive shaft drives first
Bevel gear rotation, first bevel gear drive second bevel gear rotation, and second bevel gear drives clearing axis to rotate, clearing axis rotation,
The first clean-up frame and the second clean-up frame on the outside of it rotate with it, so that cleaning bristle filters the first dedusting strainer and the second dedusting
Net is cleared up, by intermittent starting servo motor, can regularly to the first dedusting strainer and the second dedusting strainer into
Row cleaning, guarantee on the first dedusting strainer and the second dedusting strainer will not the excessive dust of adhesion, prevent excessive dust from influencing
To the clean-up effect and efficiency of the first dedusting strainer and the second dedusting strainer, it ensure that the dust removing effects of the equipment will not decline,
Good dedusting effect.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model purification device structural schematic diagram.
In figure: 1 drive shaft, 2 blow-off lines, 3 filter screens, 4 catch basins, 5 purification devices, 6 connecting pipes, 7 ventilating blinds
Window, 8 connecting rods, 9 wind pipes, 10 rain covers, 11 water pipelines, 12 sprinkler heads, 13 outlet pipes, 14 water pumps, 15 water storage boxes,
16 connection water pipes, 17 filler pipes, 18 ventilation shafts, 19 draught fans, 20 second gears, 21 first gears, 22 servo motors, 23
Connecting column, 24 second bearing seats, 25 clearing axis, 26 first clean-up frames, 27 cleaning bristles, 28 first dedusting strainers, 29 second cones
Gear, 30 first bevel gears, 31 second clean-up frames, 32 second dedusting strainers, 34 first bearing seats.
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.
The utility model embodiment provides a kind of ventilating and exhausting device of pipe gallery, as shown in Figs. 1-2, including ventilation duct
Road 18 is interconnected at the air inlet of 18 bottom end of ventilation shaft with pipe gallery, and the left side at 18 top of ventilation shaft is fixedly connected
There is connecting pipe 6, the left side at 6 top of connecting pipe is fixedly connected with wind pipe 9, and wind pipe 9 is equipped with by its two sides
Ventilation shutter 7 and the external world be interconnected, in the gas after needing to discharge some fire, pass through 19 turns of draught fan
It is dynamic, it can speed up the process of exhaust, so that exhaust effect is more preferable, ventilation shaft 18 is internally provided with draught fan 19, ventilation
The outside of fan 19 is fixedly connected with ventilation shaft 18, and the top of wind pipe 9 is fixedly connected with connecting rod 8, the top of connecting rod 8
Portion is fixedly connected with rain cover 10, two sides of the wind pipe 9 and lower section for being located at rain cover 10 is fixedly connected with ventilation shutter
7, the right side at 6 top of connecting pipe is fixedly connected with water storage box 15, and flue gas flows into connecting pipe 6 from ventilation shaft 18, opens
Water pump 14, water pump 14 carry out the water inside water storage box 15 by outlet pipe 13, water pipeline 11 and sprinkler head 12 to flue gas
Spray, the right side of water storage box 15 are fixedly connected with filler pipe 17, and the top of water storage box 15 is fixedly connected with water pump 14, water pump 14
Water inlet is fixedly connected with the water outlet of water storage box 15 connect water pipe 16, and the water outlet of water pump 14 is fixedly connected with out
Water pipe 13, outlet pipe 13 are fixedly connected with water pipeline 11 far from one end of water pump 14, and the bottom of water pipeline 11 is fixedly connected
There is a sprinkler head 12, the bottom of the connecting pipe 6 and lower section for being located at sprinkler head 12 is fixedly connected with catch basin 4, catch basin 4
Bottom is fixedly connected with blow-off line 2, and the top of blow-off line 2 is fixedly connected with filter screen 3, and the left side of connecting pipe 6 is fixed
It is connected with purification device 5, the inside of purification device 5 is fixedly connected with partition 33, and the top of partition 33 is fixedly connected with servo electricity
Machine 22, servo motor 22 are connected with first gear 21 by the rotating shaft transmission at the top of it, pass through the servo electricity inside purification device 5
Machine 22 rotates, and servo motor 22 drives first gear 21 to rotate, and the right side of first gear 21 is provided with drive shaft 1, drive shaft 1
Top is sequentially connected with second gear 20, and first gear 21 and second gear 20 are intermeshed, and first gear 21 drives the second tooth
20 rotation of wheel, second gear 20 drive drive shaft 1 to rotate, are fixedly connected with first bearing seat 34, the bottom of partition 33 on partition 33
The two sides in portion are fixedly connected with connecting column 23, and the bottom end of connecting column 23 is fixedly connected with second bearing seat 24, second bearing seat 24
Be internally provided with clearing axis 25, the bottom end of drive shaft 1 through first bearing seat 34 and is sequentially connected with first bevel gear 30, the
The two sides of one bevel gear 30 are engaged with second bevel gear 29, side and cleaning of the second bevel gear 29 far from first bevel gear 30
Axis 25 is sequentially connected, and the external respectively of clearing axis 25 is fixedly connected with the first clean-up frame 26 and the second clean-up frame 31,1 band of drive shaft
Dynamic first bevel gear 30 rotates, and first bevel gear 30 drives second bevel gear 29 to rotate, and second bevel gear 29 drives clearing axis 25
Rotation, clearing axis 25 rotate, on the outside of the first clean-up frame 26 and the second clean-up frame 31 rotate with it, the first clean-up frame 26 and the
The first dedusting strainer 28 and the second dedusting strainer 32, the first clean-up frame 26 and the second cleaning are respectively arranged between two clean-up frames 31
The inside of frame 31 is fixedly connected to cleaning bristle 27, so that cleaning bristle 27 is to the first dedusting strainer 28 and the second dedusting strainer
32 are cleared up, and by intermittent starting servo motor 22, can regularly be filtered to the first dedusting strainer 28 and the second dedusting
Net 32 is cleared up, guarantee on the first dedusting strainer 28 and the second dedusting strainer 32 will not the excessive dust of adhesion, prevent excessive
Dust influence the clean-up effect and efficiency of the first dedusting strainer 28 and the second dedusting strainer 32, ensure that the dedusting of the equipment
Effect will not decline, good dedusting effect.
When needing that ventilation is exhausted, the draught fan 19 inside ventilation shaft 18 is opened, in the work of draught fan 19
Under, the air inside pipe gallery can successively pass through ventilation shaft 18, connecting pipe 6, purification device 5 and wind pipe 9,
After purified treatment, discharged eventually by the ventilation shutter 7 being fixedly installed on wind pipe 9.
In conclusion the ventilating and exhausting device of the pipe gallery passes through in the gas after needing to discharge some fire
Draught fan 19 rotates, and can speed up the process of exhaust, so that exhaust effect is more preferable, flue gas flows into connecting tube from ventilation shaft 18
In road 6, water pump 14 is opened, the water inside water storage box 15 is passed through outlet pipe 13, water pipeline 11 and sprinkler head 12 by water pump 14
Flue gas is sprayed, can effectively be purified the volume of smoke in flue gas with water-soluble pernicious gas, Er Qieneng
Cooling processing is carried out to the flue gas after fire, guarantees that the gas temperature of discharge will not be too high, the flue gas after preliminary purification enters net
5 inside is set in makeup, under the action of the first dedusting strainer 28 and the second dedusting strainer 32, can carry out secondary mistake to flue gas
Filter, enables the residual smoke in flue gas to remove, so that clean-up effect is more preferable, the gas after the completion of purifying is from wind pipe 9
The ventilation shutter 7 of two sides is discharged, and effectively can effectively be purified pernicious gas and flue dust, so that discharge
Gas will not influence extraneous row human and environment, so that it is more convenient to use for the equipment, it is practical.
Also, the ventilating and exhausting device of the pipe gallery is rotated, servo by the servo motor 22 inside purification device 5
Motor 22 drives first gear 21 to rotate, and first gear 21 drives second gear 20 to rotate, and second gear 20 drives 1 turn of drive shaft
Dynamic, drive shaft 1 drives first bevel gear 30 to rotate, and first bevel gear 30 drives second bevel gear 29 to rotate, second bevel gear 29
Drive clearing axis 25 rotate, clearing axis 25 rotate, on the outside of the first clean-up frame 26 and the second clean-up frame 31 rotate with it so that
Cleaning bristle 27 clears up the first dedusting strainer 28 and the second dedusting strainer 32, passes through intermittent starting servo motor
22, regularly the first dedusting strainer 28 and the second dedusting strainer 32 can be cleared up, guarantee the first dedusting strainer 28 and the
On two dedusting strainers 32 will not the excessive dust of adhesion, prevent excessive dust from influencing the first dedusting strainer 28 and the second dedusting
The clean-up effect and efficiency of strainer 32 ensure that the dust removing effects of the equipment will not decline, good dedusting effect.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of ventilating and exhausting device of pipe gallery, including ventilation shaft (18), it is characterised in that: the ventilation shaft (18)
It is fixedly connected on the left of top connecting pipe (6), the left side at the top of the connecting pipe (6) is fixedly connected with wind pipe
(9), the ventilation shaft (18) is internally provided with draught fan (19), the outside of the draught fan (19) and ventilation shaft
(18) it is fixedly connected, is fixedly connected with connecting rod (8) at the top of the wind pipe (9), the top of the connecting rod (8) is fixed
Be connected with rain cover (10), the two sides of the wind pipe (9) and be located at rain cover (10) below be fixedly connected with ventilation hundred
Leaf window (7).
2. a kind of ventilating and exhausting device of pipe gallery according to claim 1, it is characterised in that: the connecting pipe
(6) right side at the top of is fixedly connected with water storage box (15), is fixedly connected with filler pipe (17), institute on the right side of the water storage box (15)
It states and is fixedly connected with water pump (14) at the top of water storage box (15).
3. a kind of ventilating and exhausting device of pipe gallery according to claim 2, it is characterised in that: the water pump (14)
Water inlet is fixedly connected with the water outlet of water storage box (15) and connect water pipe (16), and the water outlet of the water pump (14) is solid
Surely it is connected with outlet pipe (13), the outlet pipe (13) is fixedly connected with water pipeline (11), institute far from the one end of water pump (14)
The bottom for stating water pipeline (11) is fixedly connected with sprinkler head (12).
4. a kind of ventilating and exhausting device of pipe gallery according to claim 3, it is characterised in that: the connecting pipe
(6) bottom and being located at below sprinkler head (12) is fixedly connected with catch basin (4), and the bottom of the catch basin (4) is fixed
It is connected with blow-off line (2), is fixedly connected with filter screen (3) at the top of the blow-off line (2).
5. a kind of ventilating and exhausting device of pipe gallery according to claim 1, it is characterised in that: the connecting pipe
(6) be fixedly connected on the left of purification device (5), the inside of the purification device (5) is fixedly connected with partition (33), it is described every
It is fixedly connected at the top of plate (33) servo motor (22), the servo motor (22) is connected with by the rotating shaft transmission at the top of it
First gear (21) is provided with drive shaft (1) on the right side of the first gear (21), and the top of the drive shaft (1), which is driven, to be connected
It is connected to second gear (20), the first gear (21) and second gear (20) are intermeshed.
6. a kind of ventilating and exhausting device of pipe gallery according to claim 5, it is characterised in that: on the partition (33)
It is fixedly connected with first bearing seat (34), the two sides of the bottom of the partition (33) are fixedly connected with connecting column (23), the company
The bottom end for connecing column (23) is fixedly connected with second bearing seat (24), and the second bearing seat (24) is internally provided with clearing axis
(25), the bottom end of the drive shaft (1) through first bearing seat (34) and is sequentially connected with first bevel gear (30), described first
The two sides of bevel gear (30) are engaged with second bevel gear (29), and the second bevel gear (29) is far from first bevel gear (30)
Side and clearing axis (25) are sequentially connected, and the external respectively of the clearing axis (25) is fixedly connected with the first clean-up frame (26) and the
Two clean-up frames (31) are respectively arranged with the first dedusting strainer (28) between first clean-up frame (26) and the second clean-up frame (31)
With the second dedusting strainer (32), cleaning brush is fixedly connected on the inside of first clean-up frame (26) and the second clean-up frame (31)
Hair (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821112756.5U CN208487738U (en) | 2018-07-13 | 2018-07-13 | A kind of ventilating and exhausting device of pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821112756.5U CN208487738U (en) | 2018-07-13 | 2018-07-13 | A kind of ventilating and exhausting device of pipe gallery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208487738U true CN208487738U (en) | 2019-02-12 |
Family
ID=65246439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821112756.5U Expired - Fee Related CN208487738U (en) | 2018-07-13 | 2018-07-13 | A kind of ventilating and exhausting device of pipe gallery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208487738U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549820A (en) * | 2020-05-27 | 2020-08-18 | 未来都市（苏州工业园区）规划建筑设计事务所有限公司 | Underground comprehensive pipe gallery system |
| CN112023585A (en) * | 2020-08-28 | 2020-12-04 | 王芹芬 | High-efficient environmental protection dust removal exhaust apparatus |
| CN112648002A (en) * | 2020-09-16 | 2021-04-13 | 武悦 | Coal mine operation ventilation unit |
| CN115182211A (en) * | 2022-06-28 | 2022-10-14 | 宜昌市大棒科技有限公司 | an urban transportation system |
| CN116249332A (en) * | 2023-03-31 | 2023-06-09 | 广州品发机电科技有限公司 | Ventilating duct with waste heat recovery effect |
| CN117190469A (en) * | 2023-11-07 | 2023-12-08 | 江苏夸迪安防集团有限公司 | Ventilating duct externally covered with fireproof heat insulation plate |
| CN118031343A (en) * | 2024-04-07 | 2024-05-14 | 广州品发机电科技有限公司 | Multifunctional full-automatic composite air pipe |
-
2018
- 2018-07-13 CN CN201821112756.5U patent/CN208487738U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549820A (en) * | 2020-05-27 | 2020-08-18 | 未来都市（苏州工业园区）规划建筑设计事务所有限公司 | Underground comprehensive pipe gallery system |
| CN112023585A (en) * | 2020-08-28 | 2020-12-04 | 王芹芬 | High-efficient environmental protection dust removal exhaust apparatus |
| CN112648002A (en) * | 2020-09-16 | 2021-04-13 | 武悦 | Coal mine operation ventilation unit |
| CN112648002B (en) * | 2020-09-16 | 2024-05-28 | 武悦 | Colliery operation ventilation unit |
| CN115182211A (en) * | 2022-06-28 | 2022-10-14 | 宜昌市大棒科技有限公司 | an urban transportation system |
| CN115182211B (en) * | 2022-06-28 | 2024-11-08 | 宜昌市大棒科技有限公司 | An urban transportation system |
| CN116249332A (en) * | 2023-03-31 | 2023-06-09 | 广州品发机电科技有限公司 | Ventilating duct with waste heat recovery effect |
| CN116249332B (en) * | 2023-03-31 | 2023-09-19 | 广州品发机电科技有限公司 | Ventilating duct with waste heat recovery effect |
| CN117190469A (en) * | 2023-11-07 | 2023-12-08 | 江苏夸迪安防集团有限公司 | Ventilating duct externally covered with fireproof heat insulation plate |
| CN117190469B (en) * | 2023-11-07 | 2024-03-19 | 江苏夸迪安防集团有限公司 | Ventilating duct externally covered with fireproof heat insulation plate |
| CN118031343A (en) * | 2024-04-07 | 2024-05-14 | 广州品发机电科技有限公司 | Multifunctional full-automatic composite air pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190212 Termination date: 20190713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |