CN117005904B - Cable tunnel ventilation device - Google Patents

Cable tunnel ventilation device Download PDF

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Publication number
CN117005904B
CN117005904B CN202311058118.5A CN202311058118A CN117005904B CN 117005904 B CN117005904 B CN 117005904B CN 202311058118 A CN202311058118 A CN 202311058118A CN 117005904 B CN117005904 B CN 117005904B
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CN
China
Prior art keywords
hollow
wall
shell
rod
fixedly arranged
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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.)
Active
Application number
CN202311058118.5A
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Chinese (zh)
Other versions
CN117005904A (en
Inventor
庄艇
邵波
赵晓忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Guangying Group Co ltd
Original Assignee
Wuxi Guangying Group Co ltd
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Priority to CN202311058118.5A priority Critical patent/CN117005904B/en
Publication of CN117005904A publication Critical patent/CN117005904A/en
Application granted granted Critical
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/08Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/681Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/20Drawing-off or depositing dust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention relates to a cable tunnel ventilation device, which comprises a hollow fan shell, wherein a motor is fixedly arranged on the inner wall of the hollow fan shell, a rotating shaft is fixedly arranged at the output end of the motor, a plurality of fan blades are uniformly distributed on the rotating shaft along the circumferential direction, a plurality of filter meshes are arranged on the inner wall of one side of the hollow fan shell, the filter meshes are uniformly distributed along the circumference, a cleaning device for cleaning the filter meshes is arranged in the hollow fan shell, two ventilation openings are arranged on the inner wall of the hollow fan shell, an air pipe is connected to one side of the hollow fan shell, the two ventilation openings are communicated with the air pipe, dust and impurities adhered to the filter meshes can be cleaned during operation, and the cleaning device comprises a transmission assembly and an execution assembly, so that the dust and impurities on the filter meshes are prevented from being adhered too much to block the holes, and the working efficiency of the fan is lowered too much.

Description

Cable tunnel ventilation device
Technical Field
The invention relates to the technical field of tunnel ventilation devices, in particular to a cable tunnel ventilation device.
Background
Because the inside environment of cable tunnel is usually relatively closed and moist, consequently often can contain a large amount of marsh gas, inflammable, harmful gas such as carbon monoxide in the cable tunnel inside air, before the staff need get into the tunnel and carry out the operation, need open the fan and carry out ventilation to the tunnel inside to ensure staff's safety, then because there is a large amount of dust and impurity in the environment, consequently dust and impurity can be inhaled along with the air together, then attach on tunnel fan's filter mesh, when long-time work down, dust and impurity on the filter mesh glues too much and blocks up too much with the hole, can let the work efficiency of fan decline.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects of the prior art, adapt to the actual needs, and provide the cable tunnel ventilation device which can clean dust and impurities adhered to filter meshes during working, so that the dust and impurities on the filter meshes are prevented from being adhered too much to block the holes too much, and the working efficiency of a fan is reduced, and the technical problems are solved.
(2) Technical proposal
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the utility model provides a cable tunnel ventilation unit, includes the cavity fan casing, the fixed motor that is provided with of cavity fan casing inner wall, the fixed rotation axis that is provided with of output of motor, along circumferencial direction evenly distributed there being a plurality of flabellums on the rotation axis, be provided with a plurality of filter meshes on the inner wall of one side of cavity fan casing, a plurality of filter meshes distributes along circumference equidistance, be provided with the cleaning device who is used for carrying out the clearance to a plurality of filter meshes in the cavity fan casing, the inner wall of cavity fan casing is provided with two vents, one side connection of cavity fan casing is provided with an tuber pipe, two vents with the tuber pipe is linked together.
The cleaning device comprises a transmission component arranged on the rotating shaft and an execution component arranged on the inner wall of the hollow fan shell.
The transmission assembly comprises a connecting shaft fixedly arranged at one end of the rotating shaft, the connecting shaft and the rotating shaft are positioned on the same axis, and an abutting rod is fixedly arranged on the outer surface of the connecting shaft.
The execution assembly comprises a hollow matching shell fixedly arranged on one side inner wall of the hollow fan shell, the hollow matching shell is positioned at the centers of a plurality of filter meshes, an opening is formed in one side surface of the hollow matching shell facing the connecting shaft, the opening is communicated with the inside of the hollow matching shell, a rotating ring is rotatably arranged in the opening, a gear is fixedly arranged on one side surface of the inside of the hollow matching shell, a mounting hole is formed in the center of the gear, a reciprocating rod is arranged in the mounting hole and in the rotating ring, a sliding groove is formed in the outer surface of the reciprocating rod, a sliding block capable of reciprocating in the sliding groove is fixedly arranged on the inner wall of the mounting hole, a supporting disc is fixedly arranged at one end of the hollow matching shell, a reset spring is arranged between the supporting disc and the inner wall of the hollow matching shell, one end of the reset spring is fixedly connected with the hollow matching shell, the other end of the reset spring abuts against the supporting disc, a connecting rod is uniformly distributed on one side surface of the hollow matching shell, and a connecting rod is fixedly arranged on one side surface of the connecting rod.
The execution assembly further comprises a supporting rod fixedly arranged on the inner wall of the hollow matched shell, a first movable rod capable of moving in a reciprocating mode is arranged below the supporting rod, a second movable rod is arranged on one side of the gear, an inclined block is fixedly arranged on one side face of the second movable rod, which is close to the first movable rod, an inclined surface matched with the inclined block is arranged on one side face of the first movable rod, a plurality of meshing parts are arranged on the second movable rod, each meshing part comprises a mounting plate fixedly arranged on the second movable rod, a rotating shaft is arranged on the mounting plate in a rotating mode, a meshing tooth matched with the gear is fixedly arranged on the rotating shaft, a supporting rod is fixedly arranged on the second movable rod and used for blocking the meshing tooth to rotate anticlockwise.
The lower extreme of bracing piece is fixed and is provided with first trapezoidal piece, be provided with first trapezoidal groove on the first movable rod, first trapezoidal piece can be in reciprocating motion in the trapezoidal groove, trapezoidal piece with fixedly provided with first supporting spring between the lateral wall of trapezoidal groove.
The first movable rod is fixedly provided with a second trapezoid block, the inner wall of the hollow matching shell is provided with a second trapezoid groove, the second trapezoid block can reciprocate between the second trapezoid grooves, and a second supporting spring is fixedly arranged between the second trapezoid block and the side wall of the second trapezoid groove.
(3) The beneficial effects are that:
A. during operation, dust and impurities adhered to the filter mesh holes can be cleaned, so that the phenomenon that the dust and impurities on the filter mesh holes are too much to block the holes and the working efficiency of the fan is reduced is avoided;
B. can let three inserted bar 82 rotate next row of filter mesh department through setting up of executing the subassembly, let three inserted bar 82 just right with next row of filter mesh to can realize rotating in proper order and predetermine the angle and clear up the filter mesh that distributes with the circumferencial direction, thereby need not artifical regularly clear up, thereby can let equipment use more convenient, also reduced the cost of labor.
C. The gear can be propped against by the meshing teeth and the supporting rod when the supporting rod rotates anticlockwise to prop against the conical block through the arrangement of the meshing part, so that the conical block is driven to rotate anticlockwise when the supporting rod and the conical block prop against each other, and the equipment can run more stably.
Drawings
FIG. 1 is a front view of a cable tunnel ventilation device of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure at B-B in FIG. 1;
FIG. 4 is an enlarged view at C in FIG. 2;
FIG. 5 is a schematic view of the cleaning assembly;
FIG. 6 is an enlarged view of FIG. 5 at D;
FIG. 7 is a schematic view of an internal cross-section of a hollow mating housing;
FIG. 8 is a schematic view of the structure within a hollow blower housing;
FIG. 9 is an enlarged view at E in FIG. 8;
fig. 10 is an enlarged view of F in fig. 9;
fig. 11 is a schematic cross-sectional structure of a first trapezoidal block.
Detailed Description
The invention is further illustrated by the following examples in connection with figures 1-11:
the utility model provides a cable tunnel ventilation unit, includes hollow fan casing 1, the fixed motor 2 that is provided with of hollow fan casing 1 inner wall, the fixed rotation axis 3 that is provided with of output of motor 2, along circumferencial direction evenly distributed on the rotation axis 3 have a plurality of flabellums 4 (flabellum 4 with rotation axis 3 is fixed connection), be provided with a plurality of filter meshes 6 on the inner wall of one side of hollow fan casing 1, a plurality of filter meshes 6 follow circumference equidistance and distribute, be provided with the cleaning device who is used for carrying out the clearance to a plurality of filter meshes in the hollow fan casing 1, the inner wall of hollow fan casing 1 is provided with two vents 210, one side connection of hollow fan casing 1 is provided with an tuber pipe 5, two vents 210 with tuber pipe 5 is linked together. Air enters from the filter mesh and exits from the air duct 5.
The cleaning device comprises a transmission component arranged on the rotating shaft 3 and an execution component arranged on the inner wall of the hollow fan shell 1.
The transmission assembly comprises a connecting shaft 40 fixedly arranged at one end of the rotating shaft 3, the connecting shaft 40 and the rotating shaft 3 are positioned on the same axis, and a supporting rod 41 is fixedly arranged on the outer surface of the connecting shaft 40.
The actuating assembly comprises a hollow matching shell 50 fixedly arranged on the inner wall of one side of the hollow fan shell 1, the hollow matching shell 50 is positioned at the center of a plurality of filter meshes 6, an opening 51 is formed in the side surface of one side of the hollow matching shell 50 facing the connecting shaft 40, the opening 51 is communicated with the inside of the hollow matching shell 50, a rotating ring 52 is rotationally arranged in the opening 51, the rotating ring 52 is positioned on the side surface of one side of the inside of the hollow matching shell 50, a gear 53 is fixedly arranged on the side surface of one side of the gear 52, a mounting hole 54 is formed in the center of the gear 53, a reciprocating rod 55 capable of moving reciprocally is arranged in the mounting hole 54 and in the rotating ring 52, a sliding block 57 capable of moving reciprocally in the sliding groove 56 is fixedly arranged on the inner wall of the mounting hole 54, a supporting disc 58 is fixedly arranged at one end of the reciprocating rod 55 positioned in the hollow matching shell 50, a reset spring 59 is arranged between the supporting disc 58 and the inner wall of the hollow matching shell 50, a reset spring 59 is fixedly arranged at one end of the reciprocating rod 82 opposite to the connecting rod 80, a reset spring 59 is fixedly arranged at one end of the connecting rod 80, and the connecting rod is fixedly arranged at one end of the connecting rod 80 opposite to the connecting rod, and the connecting rod is fixedly opposite to the other end of the connecting rod 80, and the connecting rod is fixedly arranged at one end of the connecting rod 80.
The execution assembly further comprises a supporting rod 60 fixedly arranged on the inner wall of the hollow matching shell 50, a first movable rod 61 capable of reciprocating is arranged below the supporting rod 60, a second movable rod 62 is arranged on one side of the gear 53, an inclined block 63 is fixedly arranged on one side surface of the second movable rod 62, which is close to the first movable rod 61, an inclined surface 64 matched with the inclined block 63 is arranged on one side surface of the first movable rod 61, which is close to the inclined block 63, two meshing parts are arranged on the second movable rod 62, each meshing part comprises a mounting plate 65 fixedly arranged on the second movable rod 62, a rotating shaft 66 is rotatably arranged on the mounting plate 65, a meshing tooth 67 matched with the gear 53 is fixedly arranged on the rotating shaft 66, a supporting rod 68 is fixedly arranged on the second movable rod 62, and the supporting rod 68 is used for blocking the meshing tooth 67 from rotating anticlockwise. Can let three inserted bar 82 rotate next row of filter mesh department through setting up of executing the subassembly, let three inserted bar 82 just right with next row of filter mesh to can realize rotating in proper order and predetermine the angle and clear up the filter mesh that distributes with the circumferencial direction, thereby need not artifical regularly clear up, thereby can let equipment use more convenient, also reduced the cost of labor.
The lower extreme of bracing piece 60 is fixed and is provided with first trapezoidal piece 400, be provided with first trapezoidal groove 401 on the first movable rod 61, first trapezoidal piece 400 can be in the reciprocating motion in the trapezoidal groove 401, trapezoidal piece 400 with fixedly be provided with first supporting spring 402 between the lateral wall of trapezoidal groove 401.
The first moving rod 61 is fixedly provided with a second trapezoid block 500, the inner wall of the hollow matching shell 50 is provided with a second trapezoid groove 501, the second trapezoid block 500 can reciprocate between the second trapezoid grooves 501, and a second supporting spring 502 is fixedly arranged between the second trapezoid block 500 and the side wall of the second trapezoid groove 501.
The connecting rod 80, the mounting bar 81, the inserting rod 82 and the conical block 83 are all made of light plastic, so that the gravity is light, and when the connecting rod 80 is rotated to the left side or the right side, the connecting rod 80, the mounting bar 81, the inserting rod 82 and the conical block 83 can not drive the gear 53 to rotate downwards under the action of the gravity, so that the gear 53 is prevented from rotating to cause that the inserting rod cannot be aligned with the filter mesh for cleaning.
The working principle of the invention comprises the following steps:
the motor 2 is started to drive the rotating shaft 3, the fan blades 4, the connecting shaft 40 and the supporting rod 41 to rotate anticlockwise (anticlockwise based on fig. 8), when the supporting rod 41 rotates anticlockwise to abut against the conical block 83, the conical block 83 is pushed to move towards the direction approaching to the hollow matching housing 50 (because the gear 53 is abutted against the meshing teeth 67 and the supporting rod 68, the conical block 83 is prevented from being driven to rotate anticlockwise when the supporting rod 41 abuts against the conical block 83), the hollow matching housing 50 moves towards the direction approaching to the return spring 59 with the connecting rod 80, the reciprocating rod 55 and the supporting disc 58, the return spring 59 is extruded, meanwhile, the mounting bar 81 and the three inserting rods 82 are inserted into the filter mesh opposite to the three inserting rods 82 (the first moving rod 61 is also pushed to move towards the direction approaching to the hollow matching housing 50 under the action of the first supporting spring 402 to return, the second moving rod 62 loses the pressing of the first moving rod 61 and then returns downwards under the action of the second supporting spring 502, the meshing teeth 67 turn over under the action of the torsion spring during downward return, so that the meshing teeth 67 return downwards and do not drive the gear 53 to rotate), when the pressing rod 41 rotates to no longer press against the conical block 83, the pressing plate 58 and the reciprocating rod 55 are pushed by the return spring 59 to return, the pressing plate 58 pushes the first moving rod 61 to move towards the direction close to the inclined block 63, the inclined block 63 is pushed upwards, the inclined block 63 moves upwards with the second moving rod 62, the gear 53 rotates by a preset angle with the reciprocating rod 55 through the meshing of the meshing teeth 67 and the gear 53, thereby enabling the three inserted rods 82 to rotate to the next row of filter meshes, the three inserted rods 82 are opposite to the next row of filter meshes, thereby can realize rotating in proper order and predetermine the angle and clear up with the filter mesh of circumferencial direction distribution to need not artifical regularly clearance, thereby can let equipment use more convenient, also reduced the cost of labor.
The embodiments of the present invention are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present invention.

Claims (3)

1. A cable tunnel ventilation device, characterized in that: the novel air conditioner comprises a hollow fan shell (1), wherein an electric motor (2) is fixedly arranged on the inner wall of the hollow fan shell (1), a rotating shaft (3) is fixedly arranged at the output end of the electric motor (2), a plurality of fan blades (4) are uniformly distributed on the rotating shaft (3) along the circumferential direction, a plurality of filter meshes (6) are formed in the inner wall of one side of the hollow fan shell (1), the filter meshes (6) are uniformly distributed along the circumference, a cleaning device for cleaning the filter meshes is arranged in the hollow fan shell (1), two ventilation openings (210) are formed in the inner wall of the hollow fan shell (1), an air pipe (5) is connected and arranged on one side of the hollow fan shell (1), and the two ventilation openings (210) are communicated with the air pipe (5); the cleaning device comprises a transmission component arranged on the rotating shaft (3) and an execution component arranged on the inner wall of the hollow fan shell (1); the transmission assembly comprises a connecting shaft (40) fixedly arranged at one end of the rotating shaft (3), the connecting shaft (40) and the rotating shaft (3) are positioned on the same axis, and an abutting rod (41) is fixedly arranged on the outer surface of the connecting shaft (40); the execution assembly comprises a hollow matching shell (50) fixedly arranged on one side inner wall of the hollow fan shell (1) and a supporting rod (60) fixedly arranged on one side inner wall of the hollow matching shell (50), the hollow matching shell (50) is positioned at the centers of a plurality of filter meshes (6), one side surface of the hollow matching shell (50) facing the connecting shaft (40) is provided with an opening (51), the opening (51) is communicated with the inside of the hollow matching shell (50), the opening (51) is rotationally provided with a rotating ring (52), one side surface of the rotating ring (52) positioned in the hollow matching shell (50) is fixedly provided with a gear (53), the center of the gear (53) is provided with a mounting hole (54), the mounting hole (54) and the rotating ring (52) are internally provided with a reciprocating rod (55), the outer surface of the reciprocating rod (55) is provided with a sliding groove (56), the inner wall of the mounting hole (54) is fixedly provided with a sliding block (56) which can move in the reciprocating rod (56) and is positioned in the hollow matching shell (50), a reset spring (59) is arranged between the abutting plate (58) and the inner wall of the hollow matching shell (50), one end of the reset spring (59) is fixedly connected with the hollow matching shell (50), the other end of the reset spring (59) abuts against the abutting plate (58), a connecting rod (80) is fixedly arranged at one end of the reciprocating rod (55) located at the outer side of the hollow matching shell (50), a mounting strip (81) is fixedly arranged on the connecting rod (80), and a plurality of inserting rods (82) are uniformly distributed on the mounting strip (81) along the length direction; the utility model discloses a bevel gear (41) of a bevel gear, including bracing piece (60), bracing piece (60) below is provided with a reciprocating motion's first movable rod (61), one side of gear (53) is provided with second movable rod (62), second movable rod (62) be close to one side of first movable rod (61) is fixed to be provided with a sloping (64) that is close to one side of sloping (63) is provided with one with sloping (63) complex, be provided with a plurality of meshing parts on second movable rod (62), every meshing part is including fixed setting up mounting panel (65) on second movable rod (62), rotate on mounting panel (65) and be provided with a pivot (66), fixedly on pivot (66) be provided with one with gear (53) matched with meshing tooth (67), fixedly on second movable rod (62) be provided with a vaulting pole (68), vaulting pole (68) are used for stopping meshing tooth (67) carries out anticlockwise rotation, connecting rod (80) face one side of connecting rod (3) is provided with a bevel gear (41) and is fixed.
2. The cable tunnel ventilation device of claim 1, wherein: the lower extreme of bracing piece (60) is fixed to be provided with first trapezoidal piece (400), be provided with first trapezoidal groove (401) on first movable rod (61), first trapezoidal piece (400) can be in reciprocating motion in first trapezoidal groove (401), first trapezoidal piece (400) with fixedly be provided with first supporting spring (402) between the lateral wall of first trapezoidal groove (401).
3. The cable tunnel ventilation device of claim 2, wherein: the first movable rod (61) is fixedly provided with a second trapezoid block (500), the inner wall of the hollow matching shell (50) is provided with a second trapezoid groove (501), the second trapezoid block (500) can reciprocate between the second trapezoid grooves (501), and a second supporting spring (502) is fixedly arranged between the second trapezoid block (500) and the side wall of the second trapezoid groove (501).
CN202311058118.5A 2023-08-21 2023-08-21 Cable tunnel ventilation device Active CN117005904B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311058118.5A CN117005904B (en) 2023-08-21 2023-08-21 Cable tunnel ventilation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311058118.5A CN117005904B (en) 2023-08-21 2023-08-21 Cable tunnel ventilation device

Publications (2)

Publication Number Publication Date
CN117005904A CN117005904A (en) 2023-11-07
CN117005904B true CN117005904B (en) 2024-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311058118.5A Active CN117005904B (en) 2023-08-21 2023-08-21 Cable tunnel ventilation device

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CN (1) CN117005904B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100563992B1 (en) * 2004-11-15 2006-03-29 정혁수 Ventilation device for tunnel
CN106122054A (en) * 2016-08-24 2016-11-16 无锡市恒达矿山机械有限公司 A kind of anticlogging mine ventilation machine
CN211116695U (en) * 2019-09-23 2020-07-28 天津固德风通风设备有限公司 Fan convenient for cleaning dust and impurities
CN215804661U (en) * 2021-08-25 2022-02-11 王贝 Emergency air-reversing device for coal mine rescue
CN218563956U (en) * 2022-10-26 2023-03-03 浙江兴旺防爆风机股份有限公司 High-efficiency energy-saving fan
CN115750414A (en) * 2022-11-25 2023-03-07 内蒙古上海庙矿业有限责任公司 Bottom plate dust exhausting fan with dust scattering inhibiting function
CN116044477A (en) * 2023-03-20 2023-05-02 朱岩松 Ventilation device and method for highway tunnel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100563992B1 (en) * 2004-11-15 2006-03-29 정혁수 Ventilation device for tunnel
CN106122054A (en) * 2016-08-24 2016-11-16 无锡市恒达矿山机械有限公司 A kind of anticlogging mine ventilation machine
CN211116695U (en) * 2019-09-23 2020-07-28 天津固德风通风设备有限公司 Fan convenient for cleaning dust and impurities
CN215804661U (en) * 2021-08-25 2022-02-11 王贝 Emergency air-reversing device for coal mine rescue
CN218563956U (en) * 2022-10-26 2023-03-03 浙江兴旺防爆风机股份有限公司 High-efficiency energy-saving fan
CN115750414A (en) * 2022-11-25 2023-03-07 内蒙古上海庙矿业有限责任公司 Bottom plate dust exhausting fan with dust scattering inhibiting function
CN116044477A (en) * 2023-03-20 2023-05-02 朱岩松 Ventilation device and method for highway tunnel

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