CN220624291U - Cable gallery ventilation system - Google Patents
Cable gallery ventilation system Download PDFInfo
- Publication number
- CN220624291U CN220624291U CN202322000968.1U CN202322000968U CN220624291U CN 220624291 U CN220624291 U CN 220624291U CN 202322000968 U CN202322000968 U CN 202322000968U CN 220624291 U CN220624291 U CN 220624291U
- Authority
- CN
- China
- Prior art keywords
- housing
- air
- cable
- ventilation
- air outlet
- 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.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 75
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000013022 venting Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ventilation (AREA)
Abstract
The utility model relates to a cable corridor ventilation system, including hot blast blowpipe apparatus and air-out device, hot blast blowpipe apparatus is used for blowing in the air to the air intake of cable corridor, and air-out device is used for extracting the air in the air outlet of follow cable corridor. The air inlet device and the air outlet device comprise a ventilation device main body and a moving assembly, and the moving assembly is used for supporting the ventilation device main body. The moving assembly comprises a universal wheel and a lifting mechanism, the ventilating device main body is connected with the universal wheel through the lifting mechanism, and the lifting mechanism can drive the universal wheel to move up and down so as to adjust the distance between the ventilating device main body and the ground. The air inlet device and the air outlet device which are respectively arranged can form unidirectional circulating air flow in the cable gallery, so that the ventilation effect is improved. The lifting mechanism can drive the universal wheels to move up and down, so that the ventilation device main body is driven to be close to the ground, the gap between the ventilation device main body and the ground is reduced, and air in the cable gallery is reduced to return to through the gap. The universal wheel can also facilitate movement of the ventilation device body.
Description
Technical Field
The disclosure relates to the technical field of cable gallery ventilation, in particular to a cable gallery ventilation system.
Background
The cable gallery operates in a long-time closed state, the oxygen concentration in the gallery is low, and if maintenance personnel enter the cable gallery in a trade way, the risk of hypoxia choking exists. In the related art, a fan for ventilation is usually arranged at an access opening, and before entering a cable gallery, the fan is adopted to ventilate the gallery, and then the fan enters the gallery to carry out maintenance work. However, due to the temporary nature and emergency of maintenance work, the fan ventilation is provided only at a single access port, air deep in the gallery cannot be exhausted, ventilation effect is poor, and the air exhausted by the fan may be returned to the gallery through the access port due to pressure. In addition, after ventilation is completed, maintenance personnel enter the gallery through the access opening, and the fan positioned at the access opening needs to be moved away, but the fan is heavy, and the moving process is time-consuming and labor-consuming.
Disclosure of Invention
An object of the present disclosure is to provide a cable gallery ventilation system to solve the above technical problems.
In order to achieve the above object, the present disclosure provides a cable corridor ventilation system, including an air intake device for blowing air into an air inlet of a cable corridor, and an air outlet device for extracting air from an air outlet of the cable corridor;
the air inlet device and the air outlet device comprise a ventilation device main body and a moving assembly, and the moving assembly is used for supporting the ventilation device main body;
the moving assembly comprises a universal wheel and a lifting mechanism, the ventilation device main body is connected with the universal wheel through the lifting mechanism, and the lifting mechanism can drive the universal wheel to move up and down so as to adjust the distance between the ventilation device main body and the ground.
Optionally, the elevating system includes first casing, drive division and connecting rod, drive division connect in first casing, the first end of connecting rod movably connect in first casing and with drive division transmission connection, the second end of connecting rod with the universal wheel is connected, drive division is used for the drive the connecting rod is followed the axial displacement of connecting rod.
Optionally, the drive portion includes intermeshing's gear and rack and operating portion, the first end of connecting rod with the rack is connected, the second end of connecting rod with the universal wheel is connected, the gear with the rack all is located in the first casing, the one end of operating portion pass the first casing and with gear connection, operating portion is used for the drive gear rotation.
Optionally, the connecting rod is the piston rod, drive portion is the cylinder body, the first end of piston rod wears to locate the cylinder body, the second end of piston rod with the universal wheel is connected, the cylinder body is used for driving the piston rod is along sharp reciprocating motion.
Optionally, the ventilation device main body includes second casing and fan, be provided with first opening and second opening on the second casing, the fan sets up in the second casing and be close to first opening, the fan is used for with the air follow first opening water conservancy diversion to the second opening, remove the subassembly with the second casing is connected and set up in the second casing outside.
Optionally, the ventilation device main body further includes a plurality of reinforcement frames, a plurality of the reinforcement frames are disposed around the axis of the second housing at intervals, the plurality of moving assemblies are plural, the plurality of moving assemblies are in one-to-one correspondence with the plurality of reinforcement frames, and the plurality of moving assemblies are respectively disposed on the corresponding reinforcement frames.
Optionally, the second housing is a cylindrical housing, and a diameter of the second housing is greater than or equal to a diameter of an air inlet or an air outlet of the cable gallery.
Optionally, the ventilation device main body further includes a mounting bracket and a protection net, the first opening and the second opening are both provided with the protection net, the mounting bracket is connected to the second housing and is located at the first opening, the mounting bracket is located at one side of the protection net facing the outside of the second housing, a through hole for the motor of the fan to pass through is formed in the protection net, the motor of the fan is mounted on the mounting bracket, and the motor part of the fan passes through the through hole and stretches into the second housing, so that the blade of the fan is located at one side of the protection net facing the inside of the second housing.
Optionally, the cable gallery ventilation system further includes a control box, and the ventilation device main body is provided with a socket electrically connected with the control box, and the control box is used for controlling the start and stop of the air inlet device and the air outlet device.
Optionally, a timing start-stop device is arranged in the control box, the timing start-stop device is connected with the air inlet device and the air outlet device, and the timing start-stop device can close the air inlet device and/or the air outlet device after reaching a set time.
Through above-mentioned technical scheme, set up the air inlet unit and the air-out device at the air intake and the air outlet of cable corridor respectively can form unidirectional circulating air flow in the cable corridor to with the air discharge of cable corridor depths, promote ventilation's effect. In addition, the lifting mechanism can drive the universal wheels to move up and down, so that the ventilation device main body is driven to be close to the ground, the gap between the ventilation device main body and the ground is reduced, air in the cable gallery is further reduced due to pressure difference and returned to the gap, and ventilation efficiency is improved. And the universal wheel can also facilitate the movement of the ventilation device main body, and reduce the intensity of ventilation work.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic illustration of a cable gallery ventilation system provided by one embodiment of the present disclosure;
FIG. 2 is a schematic perspective view of an air intake device according to an embodiment of the present disclosure;
FIG. 3 is a schematic side view of an air intake provided in one embodiment of the present disclosure;
fig. 4 is a schematic structural view of a driving part of a lifting mechanism according to an embodiment of the present disclosure;
FIG. 5 is a schematic cross-sectional view of an air intake provided in one embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view of an air outlet device provided in one embodiment of the present disclosure;
fig. 7 is a schematic top view of an air intake device according to an embodiment of the present disclosure.
Description of the reference numerals
100-a cable gallery ventilation system; 1-an air inlet device; 2-an air outlet device; 3-a ventilation device body; 31-a second housing; 311-first openings; 312-a second opening; 32-a fan; 322-motor; 323-blades; 33-reinforcing the frame; 34-mounting a bracket; 35-a protective net; 4-moving the assembly; 41-universal wheels; 42-lifting mechanism; 421-a first housing; 422-a driving part; 4221-gear; 4222-racks; 4223-an operation portion; 433-connecting rod.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise indicated, terms of orientation such as "upper" and "lower" are generally defined with reference to the orientation of the drawing figures. "inner and outer" means both the inner and outer of the profile of the corresponding part. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
As shown in fig. 1 to 7, the present disclosure provides a cable corridor ventilation system 100, including an air intake device 1 and an air outlet device 2, the air intake device 1 is used for blowing air into an air inlet of a cable corridor, and the air outlet device 2 is used for extracting air from an air outlet of the cable corridor. The air inlet device 1 and the air outlet device 2 comprise a ventilating device main body 3 and a moving assembly 4, wherein the moving assembly 4 is used for supporting the ventilating device main body 3. The moving assembly 4 comprises a universal wheel 41 and a lifting mechanism 42, the ventilation device main body 3 is connected with the universal wheel 41 through the lifting mechanism 42, and the lifting mechanism 42 can drive the universal wheel 41 to move up and down so as to adjust the distance between the ventilation device main body 3 and the ground.
When the cable corridor ventilation system 100 in the present disclosure ventilates, the air inlet device 1 blows air inwards at the air inlet, and the air outlet device 2 draws air outwards at the air outlet, so that unidirectional circulating air flow is formed in the cable corridor, and the air in the corridor is driven to flow outwards. When the air inlet device 1 or the air outlet device 2 is paved, the ventilating device main body 3 is moved to the air inlet or the air outlet through the universal wheels 41, and then the lifting mechanism 42 is started to drive the universal wheels 41 to move upwards, so that the ventilating device main body 3 descends and is buckled at the air inlet or the air outlet.
Through above-mentioned technical scheme, set up respectively at the air inlet of cable corridor and the air inlet unit 1 of air outlet and air-out device 2 can form unidirectional circulating air flow in the cable corridor to with the air discharge of cable corridor depths, promote ventilation's effect. In addition, the lifting mechanism 42 can drive the universal wheel 41 to move up and down, so that the ventilation device main body 3 is driven to be close to the ground, the gap between the ventilation device main body 3 and the ground is reduced, air in the cable gallery is further reduced due to pressure difference and returned to the gap, and ventilation efficiency is improved. And the universal wheel 41 can also facilitate the movement of the ventilation device body 3 and reduce the intensity of ventilation work.
Alternatively, as shown in fig. 3, the lifting mechanism 42 includes a first housing 421, a driving portion 422 and a connecting rod 433, the driving portion 422 is connected to the first housing 421, a first end of the connecting rod 433 is movably connected to the first housing 421 and is in transmission connection with the driving portion 422, a second end of the connecting rod 433 is connected to the universal wheel 41, and the driving portion 422 is used for driving the connecting rod 433 to move along an axial direction of the connecting rod 433. The first case 421 is connected with the ventilator body 3, the connection rod 433 is connected to the first case 421 in the up-down direction, and the first end of the connection rod 433 is driven to move along the axial direction of the connection rod 433 by the driving part 422, so that the second end of the connection rod 433 can drive the universal wheel 41 to move in the up-down direction, and in the process of the upward movement of the universal wheel 41, the ventilator body 3 connected with the lifting mechanism 42 moves downward due to gravity until being placed on the ground.
Alternatively, as shown in fig. 4, the driving part 422 includes a gear 4221 and a rack 4222 engaged with each other, and an operating part 4223, a first end of the connecting rod 433 is connected to the rack 4222, the gear 4221 and the rack 4222 are both located in the first housing 421, one end of the operating part 4223 passes through the first housing 421 and is connected to the gear 4221, and the operating part 4223 is used for driving the gear 4221 to rotate. The operation portion 4223 may be a Z-shaped rotation rod, and when the driving connection rod 433 moves axially, the portion of the rotation rod located outside the first housing 421 may be operated, so as to drive the gear 4221 to rotate, and further drive the rack 4222 meshed with the gear 4221 to move, so that the connection rod 433 moves axially. The rotation of the rotation rod in the clockwise direction or the counterclockwise direction can determine the rotation direction of the gear 4221, so as to drive the rack 4222 to move upwards or downwards, and further determine the movement direction of the connecting rod 433. The driving mode of the gear 4221 and the rack 4222 is adopted, so that the structure is simple and the reliability is high.
Optionally, the driving portion 422 may include a motor 322 and a nut, the connecting rod 433 is a screw, the motor 322 and the nut are both disposed in the first housing 421, the nut is sleeved on the screw and is in threaded connection with the screw to form a screw-nut pair, an output end of the motor 322 is in transmission connection with the nut, the screw can move along an axial direction of the screw along with rotation of the nut, a rotation direction of the motor 322 is different, and a movement direction of the screw is also different, so that the universal wheel 41 can be driven to move up and down.
Alternatively, the connecting rod 433 may be a piston rod, the driving portion 422 is a cylinder body, the first end of the piston rod is disposed through the cylinder body, the second end of the piston rod is connected to the universal wheel 41, and the cylinder body is used for driving the piston rod to reciprocate along a straight line.
Alternatively, as shown in fig. 5 and 6, the ventilation device main body 3 includes a second housing 31 and a fan 32, a first opening 311 and a second opening 312 are provided on the second housing 31, the fan 32 is disposed in the second housing 31 and is close to the first opening 311, the fan 32 is used for guiding air from the first opening 311 to the second opening 312, and the moving assembly 4 is connected with the second housing 31 and is disposed outside the second housing 31. At the air inlet and the air outlet of the cable corridor, as the air flows in different directions relative to the air inlet and the air outlet of the cable corridor, the positions of the first opening 311 and the second opening 312 of the air inlet device 1 and the air outlet device 2 are different, the first opening 311 of the air inlet device 1 is arranged at one side of the second shell 31 far away from the air inlet of the cable corridor, and the first opening 311 of the air outlet device 2 is arranged at one side of the second shell 31 near the air inlet of the cable corridor, so that the first opening 311 of the air inlet device 1 is far away from the air inlet of the cable corridor as much as possible, more fresh air is extracted to enter the cable corridor, and the second opening 312 of the air outlet device 2 is far away from the air outlet of the cable corridor as much as possible, thereby reducing the probability of the discharged air returning to the cable corridor.
In order to protect the second housing 31, optionally, as shown in fig. 2, the ventilation device body 3 may further include a plurality of reinforcing frames 33, the plurality of reinforcing frames 33 are disposed around the axis of the second housing 31 at intervals, the plurality of moving assemblies 4 are plural, the plurality of moving assemblies 4 are in one-to-one correspondence with the plurality of reinforcing frames 33, and the plurality of moving assemblies 4 are disposed on the corresponding reinforcing frames 33, respectively. The reinforcing frames 33 are connected to each other and disposed around the second housing 31 at intervals, so that a protective frame is formed around the second housing 31 to prevent the second housing 31 from being deformed due to collision. The plurality of moving assemblies 4 are respectively arranged on the corresponding reinforcing frames 33, and can respectively provide support for the ventilation device main body 3 around the second shell 31, so that the movement and lifting stability of the ventilation device main body 3 are ensured.
In order to enhance the ventilation effect, optionally, as shown in fig. 1, the second housing 31 is a cylindrical housing, and the diameter of the second housing 31 is greater than or equal to the diameter of the air inlet or the air outlet of the cable gallery. Because the ventilation device main body 3 is attached to the ground during ventilation, in order to reduce the backflow of air which has been discharged from the cable corridor due to the pressure difference, the diameter of the second housing 31 is set to be greater than or equal to the diameter of the air inlet or the air outlet of the cable corridor, so that the air inlet or the air outlet of the cable corridor can be completely wrapped in the range of the first opening 311 or the second opening 312 in the ventilation process of the second housing 31, thereby improving the ventilation efficiency. The air inlet or the air outlet of the cable gallery is a circular opening.
Alternatively, as shown in fig. 5 to 7, the ventilation device body 3 further includes a mounting bracket 34 and a protection net 35, the protection net 35 is disposed at each of the first opening 311 and the second opening 312, the mounting bracket 34 is connected to the second housing 31 and located at the first opening 311, the mounting bracket 34 is located at a side of the protection net 35 facing the outside of the second housing 31, a through hole through which the motor 322 of the blower 32 passes is formed in the protection net 35, the motor 322 of the blower 32 is mounted on the mounting bracket 34, and a part of the motor 322 of the blower 32 passes through the through hole and extends into the second housing 31, so that the blade 323 of the blower 32 is located at a side of the protection net 35 facing the inside of the second housing 31.
The installing support 34 sets up in first opening 311 department, sets up protection network 35 respectively at first opening 311 and second opening 312, can prevent in ventilation process, and the debris that the air current carried gets into the blade 323 of destroying fan 32 in the second casing 31, guarantees the normal work of fan 32, can also prevent that blade 323 of fan 32 from receiving the damage in the handling. The fan 32 motor 322 is arranged on the outer side of the protective net 35, and maintenance can be performed without dismantling the protective net 35 when the motor 322 is overhauled, so that the workload of maintenance is reduced.
Optionally, the cable corridor ventilation system 100 further includes a control box, and the ventilation apparatus main body 3 is provided with a socket electrically connected with the control box, where the control box is used to control the start and stop of the air intake apparatus 1 and the air outlet apparatus 2. The air inlet device 1, the air outlet device 2 and the control system are respectively arranged, so that the movement and jolt of a control box are reduced, the structures of the air inlet device 1 and the air outlet device 2 can be simplified, and the possibility of faults of the air inlet device 1 and the air outlet device 2 is reduced.
Optionally, a timing start-stop device is arranged in the control box and connected with the air inlet device 1 and the air outlet device 2, and the timing start-stop device can close the air inlet device 1 and/or the air outlet device 2 after reaching a set time. Through the timing start-stop device, the air inlet device 1 or the air outlet device 2 can automatically stop working when the person is unattended, so that installation accidents caused by unattended operation are avoided, manpower can be liberated, and the working efficiency is improved.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. The cable corridor ventilation system is characterized by comprising an air inlet device and an air outlet device, wherein the air inlet device is used for blowing air into an air inlet of a cable corridor, and the air outlet device is used for extracting air from the air outlet of the cable corridor;
the air inlet device and the air outlet device comprise a ventilation device main body and a moving assembly, and the moving assembly is used for supporting the ventilation device main body;
the moving assembly comprises a universal wheel and a lifting mechanism, the ventilation device main body is connected with the universal wheel through the lifting mechanism, and the lifting mechanism can drive the universal wheel to move up and down so as to adjust the distance between the ventilation device main body and the ground.
2. The cable gallery ventilation system of claim 1, wherein the lifting mechanism includes a first housing, a drive portion connected to the first housing, a first end of the connecting rod movably connected to the first housing and in driving connection with the drive portion, a second end of the connecting rod connected to the universal wheel, and a connecting rod for driving the connecting rod to move in an axial direction of the connecting rod.
3. The cable gallery venting system of claim 2, wherein the drive portion includes intermeshing gears and racks and an operating portion, the first end of the connecting rod being connected to the racks, the gears and racks being both located within the first housing, one end of the operating portion passing through the first housing and being connected to the gears, the operating portion being for driving the gears to rotate.
4. The cable gallery ventilation system of claim 2, wherein the connecting rod is a piston rod, the driving portion is a cylinder block, a first end of the piston rod is disposed through the cylinder block, a second end of the piston rod is connected to the universal wheel, and the cylinder block is configured to drive the piston rod to reciprocate along a straight line.
5. The cable gallery ventilation system of claim 1, wherein the ventilation device body includes a second housing having a first opening and a second opening disposed therein and a blower disposed adjacent to the first opening for directing air from the first opening to the second opening, the moving assembly being coupled to the second housing and disposed outside the second housing.
6. The cable gallery ventilation system of claim 5, wherein said ventilation device body further comprises a plurality of reinforcement frames disposed in circumferentially spaced relation about an axis of said second housing, said plurality of moving assemblies being in one-to-one correspondence with a plurality of said reinforcement frames, said plurality of moving assemblies being disposed respectively on said corresponding reinforcement frames.
7. The cable gallery ventilation system of claim 5, wherein the second housing is a cylindrical housing having a diameter greater than or equal to a diameter of an air inlet or an air outlet of the cable gallery.
8. The cable gallery ventilation system of claim 5, wherein the ventilation device body further includes a mounting bracket and a protective screen, the first opening and the second opening are both provided with the protective screen, the mounting bracket is connected to the second housing and is located at the first opening, the mounting bracket is located at a side of the protective screen facing the outside of the second housing, a through hole through which a motor of the fan passes is formed in the protective screen, the motor of the fan is mounted to the mounting bracket, and a motor portion of the fan passes through the through hole and extends into the second housing so that blades of the fan are located at a side of the protective screen facing the inside of the second housing.
9. The cable gallery ventilation system of any one of claims 1-8, further comprising a control box, wherein the ventilation device body is provided with a socket electrically connected to the control box, and the control box is used for controlling start and stop of the air intake device and the air outlet device.
10. The cable gallery ventilation system of claim 9, wherein a timing start-stop device is provided in the control box, the timing start-stop device is connected with the air inlet device and the air outlet device, and the timing start-stop device can close the air inlet device and/or the air outlet device after a set time is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322000968.1U CN220624291U (en) | 2023-07-27 | 2023-07-27 | Cable gallery ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322000968.1U CN220624291U (en) | 2023-07-27 | 2023-07-27 | Cable gallery ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220624291U true CN220624291U (en) | 2024-03-19 |
Family
ID=90222545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322000968.1U Active CN220624291U (en) | 2023-07-27 | 2023-07-27 | Cable gallery ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220624291U (en) |
-
2023
- 2023-07-27 CN CN202322000968.1U patent/CN220624291U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220624291U (en) | Cable gallery ventilation system | |
| CN218030848U (en) | Large-air-volume environment-friendly centrifugal fan | |
| CN210717948U (en) | Building energy-saving ventilation structure | |
| CN213682447U (en) | Integration promotes pump station | |
| CN115807984B (en) | Sinking device and sinking method for air conditioning unit and fan assembly | |
| CN115382382B (en) | Unmanned security inspection explosion-proof robot applied to chemical enterprises | |
| CN219139493U (en) | Axial-flow fire-fighting smoke exhaust fan | |
| CN214469101U (en) | Roof ventilator | |
| CN216625064U (en) | Intelligent looped netowrk cabinet | |
| CN214089974U (en) | Underground comprehensive pipe gallery | |
| CN214652878U (en) | Environment-friendly elevator ventilation device | |
| CN116001618A (en) | Self-protection type new energy automobile fills electric pile | |
| CN214055917U (en) | Fire engineering installation is with pre-buried pipeline dust fall through wall perforating device | |
| CN215071262U (en) | Box-type substation | |
| CN112628654A (en) | Street lamp for carrying 5G communication base station | |
| CN220798394U (en) | Intelligent monitoring device for underground parking garage | |
| CN114353453A (en) | Drying equipment is used in vermicelli production and processing | |
| CN222009775U (en) | A single-tube tower with ventilation structure | |
| CN220153306U (en) | Cooling tower convenient to maintenance | |
| CN221569000U (en) | Marine axial-flow fan of compact structure | |
| CN216920437U (en) | Distributed mechanical ventilation structure of piping lane | |
| CN213205100U (en) | Chemical warehouse with ventilation unit | |
| CN213802487U (en) | Home use elevator frame structure | |
| CN221442880U (en) | Industrial large fan | |
| CN220953800U (en) | Sewage lifting pump station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |