CN117967377A - Colliery is with interim air door in pit that can release - Google Patents
Colliery is with interim air door in pit that can release Download PDFInfo
- Publication number
- CN117967377A CN117967377A CN202410305519.4A CN202410305519A CN117967377A CN 117967377 A CN117967377 A CN 117967377A CN 202410305519 A CN202410305519 A CN 202410305519A CN 117967377 A CN117967377 A CN 117967377A
- Authority
- CN
- China
- Prior art keywords
- air door
- balancing weight
- pressure
- door body
- fixed
- 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
- 239000003245 coal Substances 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000011324 bead Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/12—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against air pressure, explosion, or gas
- E06B5/125—Closures for relieving excess pressure inside the building
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
- E06B7/30—Peep-holes; Devices for speaking through; Doors having windows
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
The invention discloses a temporary air door capable of releasing pressure for underground coal mine, and relates to the technical field of air doors. This colliery is with interim air door in pit that can release, including the air door body, still include: the pressure release mechanism comprises a wind shield which is rotationally connected in a through hole of a wind door body through a rotating shaft, a balancing weight is movably connected on the wind shield, a lifting component which is connected with the balancing weight is arranged on the wind door body, the lifting component is used for moving the balancing weight in the vertical direction, and a guiding component is arranged on the balancing weight. According to the invention, the pressure relief mechanism is arranged, after the air door body is installed, when the pressure intensity on one side of the air door body is larger, the pressure intensity can blow the wind shield open, air flows out from the through hole of the air door body, and the pressure born by the air door body is reduced, so that the air door body is protected, the conditions of explosion and the like of a channel caused by the larger pressure intensity are also avoided, and the overall safety performance is improved.
Description
Technical Field
The invention relates to the technical field of air doors, in particular to a temporary air door capable of relieving pressure for underground coal mines.
Background
A coal mine is a passageway drilled from the surface to the ground for entering the coal mine for coal mining operations. Coal mines typically consist of a shaft, which is a vertically downwardly excavated shaft, and an inclined shaft, which is an obliquely downwardly excavated shaft. The coal mine is an important channel for coal workers to enter the coal mine underground to carry out coal mining, transportation and management, and an air door is needed to be arranged under the coal mine, and the air door is used for sealing a mine tunnel or an underground tunnel and is usually used for controlling traffic, preventing harmful gas from diffusing, ensuring safety and the like. The damper may take various forms, such as iron doors, wooden doors, explosion vents, etc., depending on the particular environment and requirements. Dampers are typically installed at roadway crossings or intersections and can be opened or closed as needed to manage traffic and airflow. In underground projects such as coal mines, underground tunnels and the like, air doors are important devices, which are helpful for maintenance safety and management work.
In the temporary channel of coal mine, also need install interim air door, when installing, need set up the mounting hole in the passageway earlier, later install the air door, after the installation, according to the demand, hydraulic means can be installed for the switch of control air door also can direct manual switch, after the amount of wind in the passageway is great, the pressure in the passageway will increase, but the air door is sealed, the pressure is all born by the air door, so great pressure back, the air door just has the possibility of deformation damage, consequently there is the demand of further optimizing in the pressure release direction of air door.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a temporary air door for underground coal mines, which can relieve pressure, and solves the problem that the air door does not relieve pressure.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a colliery is with interim air door in pit that can release, includes the air door body, still includes:
The pressure release mechanism comprises a wind shield which is rotationally connected in a through hole of a wind door body through a rotating shaft, a balancing weight is movably connected on the wind shield, a lifting component which is connected with the balancing weight is arranged on the wind door body, the lifting component is used for moving the balancing weight in the vertical direction, a guiding component is arranged on the balancing weight, the guiding component is used for guiding the balancing weight in the vertical direction, and a weighting component is arranged on the balancing weight.
Further, the guide assembly comprises a guide rod penetrating through the balancing weight, and a square plate fixed on the wind shield is fixed at the end of the guide rod.
Further, the guide bar is hexagonal for improving guide accuracy in the vertical direction.
Further, a sealing ring is fixed on the inner wall of the through hole of the air door body, and the sealing ring is movably connected with the surface of the wind shield.
Further, the lifting assembly comprises a servo motor fixed on the air door body, a winding drum is fixed at the end part of an output shaft of the servo motor, a pull rope is fixed on the winding drum, and the bottom end of the pull rope is fixed on the balancing weight.
Further, a baffle ring is fixed on the winding drum and used for preventing the wound pull rope from being separated from the winding drum.
Further, the weighting component comprises a square block, and the square block is arranged on the surface of the balancing weight.
Further, a magnetic plate is fixed on the square block, and the magnetic plate is magnetically attracted on the surface of the balancing weight.
Further, a positioning rod inserted in the round hole of the balancing weight is fixed on the magnetic plate and used for preventing the square from being inclined.
Further, the end part of the positioning rod is hemispherical and is used for quick positioning of the positioning rod.
(III) beneficial effects
The invention has the following beneficial effects:
(1) This colliery is with interim air door in pit that can release through setting up relief mechanism, after the air door body installation, when air door body one side pressure back great, pressure can blow the deep bead open, and the air current will flow away from the through-hole of air door body, reduces the pressure that the air door body bore to protect the air door body, also avoid great pressure to lead to the emergence of the condition such as passageway explosion equally, improve holistic security performance.
(2) This colliery is with interim air door in pit that can release through setting up the subassembly of aggravating, through the difference of balancing weight upper and lower position, the size of required power when can changing the deep bead and rotate, but when the balancing weight is located the bottommost, the weight of balancing weight still is not enough after, alright fix the square on the balancing weight through the magnetic plate, increases the weight of balancing weight, the required power when improving the deep bead rotation, further improves the scope that can adjust.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the back structure of the present invention;
FIG. 3 is a schematic view of the seal ring structure of the present invention;
FIG. 4 is a schematic diagram of the structure of the present invention;
FIG. 5 is a schematic diagram of the structure of the present invention;
FIG. 6 is a schematic diagram of the structure of the present invention.
In the figure, 1, a throttle body; 2. a pressure release mechanism; 21. a wind deflector; 22. a seal ring; 23. a guide assembly; 231. a square plate; 232. a guide rod; 24. balancing weight; 25. a lifting assembly; 251. a servo motor; 252. winding up a winding drum; 253. a baffle ring; 254. a pull rope; 3. a weighting assembly; 31. a square block; 32. a magnetic plate; 33. and a positioning rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-6, the embodiment of the present invention provides a technical solution: the utility model provides a colliery is interim air door in pit that can release, includes air door body 1, and air door body 1 need punch in the passageway before using, later installs air door body 1 through modes such as screw, and air door body 1 can also be according to the demand after the installation, selects whether install hydraulic system for the switch door of air door body 1 still includes:
The pressure release mechanism 2, the pressure release mechanism 2 is including rotating the deep bead 21 of connecting in the through-hole of air door body 1 through-hole through the pivot, deep bead 21 accessible pivot rotates, swing joint has balancing weight 24 on the deep bead 21, balancing weight 24's upper and lower position is different, required power when changeable deep bead 21 rotates, be provided with the lifting unit 25 of being connected with balancing weight 24 on the air door body 1, lifting unit 25 is used for balancing weight 24 to be in the ascending removal of vertical direction, be provided with guiding assembly 23 on the balancing weight 24, guiding assembly 23 is used for balancing weight 24 to be in the ascending direction of vertical, be provided with on the balancing weight 24 and aggravate subassembly 3.
Specifically, the guide assembly 23 includes a guide rod 232 penetrating the weight 24, and a square plate 231 fixed to the wind deflector 21 is fixed to an end of the guide rod 232.
In this embodiment, please refer to fig. 2, 3 and 4, the guide rods 232 are provided with two, the two guide rods 232 are symmetrically arranged in the middle of the wind deflector 21, the two guide rods 232 are vertically arranged, the two guide rods 232 are parallel to the wind deflector 21, and the balancing weight 24 can be guided by the two guide rods 232, so that the balancing weight 24 can only axially move along the square of the guide rods 232, the stability of the balancing weight 24 in moving in the vertical direction is improved, and the shaking of the balancing weight 24 in the vertical movement is avoided.
Specifically, the guide bar 232 has a hexagonal shape for improving the guide accuracy in the vertical direction.
In this embodiment, please refer to fig. 4, the guide rod 232 with the hexagonal structure is stronger and more stable, can better bear the action of external force, improves the durability and reliability of the guide rod 232, and the surface area of the hexagonal guide rod 232 is larger, and the balancing weight 24 can not displace beyond axial movement during vertical guiding, so that the balancing weight 24 moves more stably.
Specifically, a sealing ring 22 is fixed on the inner wall of the through hole of the air door body 1, and the sealing ring 22 is movably connected with the surface of the wind shield 21.
In this embodiment, referring to fig. 3 and 4, the sealing ring 22 is made of rubber, the sealing ring 22 is relatively soft, the gap between the sealing ring 22 and the wind deflector 21 is relatively small after the sealing ring 22 contacts with the wind deflector 21, and the possibility that air flows through the gap between the sealing ring 22 and the wind deflector 21 is relatively low, so that the sealing performance of the wind deflector 21 in use is improved.
Specifically, the lifting assembly 25 comprises a servo motor 251 fixed on the damper body 1, a winding drum 252 is fixed at the end part of an output shaft of the servo motor 251, a pull rope 254 is fixed on the winding drum 252, and the bottom end of the pull rope 254 is fixed on the balancing weight 24.
In this embodiment, please refer to fig. 3, the servo motor 251 is connected to an external controller through a guide, the controller can control the forward and reverse rotation and start and stop of the servo motor 251, the servo motor 251 can drive the winding drum 252 to rotate, the winding drum 252 can wind or unwind the pull rope 254 after rotating, the pull rope 254 can drive the balancing weight 24 to move upwards after winding the pull rope 254, and the balancing weight 24 can move downwards when unwinding the pull rope 254.
Specifically, a stop ring 253 is fixed to the winding drum 252 to prevent the wound rope 254 from being separated from the winding drum 252.
In this embodiment, referring to fig. 3, two stop rings 253 are provided, and the two stop rings 253 are symmetrically arranged about the middle of the winding drum 252, and the two stop rings 253 are aligned with the ends of the winding drum 252, so that after the pull rope 254 is wound on the winding drum 252, the pull rope 254 can be concentrated on the winding drum 252 through the two stop rings 253, so as to improve the stability of the pull rope 254 in use.
Specifically, the weighting assembly 3 includes a block 31, and the block 31 is disposed on the surface of the weight 24.
In this embodiment, referring to fig. 2,3, 4 and 5, the block 31 can increase the weight of the balancing weight 24, the balancing weight 24 can be disassembled, the balancing weight 24 can be installed according to the requirement, when the required critical pressure relief value is larger, both blocks 31 can be installed, and when the pressure relief value is smaller, the block 31 is not required to be installed.
Specifically, a magnetic plate 32 is fixed on the square 31, and the magnetic plate 32 is magnetically attracted to the surface of the counterweight 24.
In this embodiment, please refer to fig. 4 and 5, the weight 24 is made of metal iron, the magnetic plate 32 can generate magnetic force with the metal iron, the block 31 is fixed by the magnetic force between the magnetic plate 32 and the weight 24, and when the block 31 needs to be disassembled, the block 31 can be directly pulled out, and the assembly and the disassembly of the block 31 are very convenient.
Specifically, a positioning rod 33 inserted into the circular hole of the balancing weight 24 is fixed on the magnetic plate 32, so as to prevent the square 31 from tilting.
In this embodiment, please refer to fig. 4 and 5, two positioning rods 33 are fixed on one magnetic plate 32, the two positioning rods 33 are arranged in parallel, the two positioning rods 33 are arranged vertically with the magnetic plate 32, after the positioning rods 33 are inserted into the positioning holes, the square block 31 can be fixed by magnetic force between the magnetic plate 32 and the balancing weight 24, and the square block 31 is fixed in position, so that the square block 31 cannot move in the vertical and horizontal directions during use, and the use is stable.
Specifically, the end of the positioning rod 33 is provided in a hemispherical shape for quick positioning of the positioning rod 33.
In this embodiment, referring to fig. 4 and 5, after the end of the positioning rod 33 is hemispherical, the area of the contact surface of the positioning rod 33 is smaller, and after the positioning rod 33 contacts the edge of the positioning hole, the positioning rod 33 can be quickly slid into the positioning hole through the guiding of the spherical surface, so as to realize quick positioning of the positioning rod 33.
Before the air door body 1 is installed, punching is needed in a channel, the air door body 1 is installed in the channel through screws and the like, whether a hydraulic structure is installed for opening the air door body 1 can be selected according to requirements, after the installation is completed, the tightness is needed to be detected, and when the tightness and the installation stability are qualified, the air door body 1 can be used;
When the air door body 1 is used, air flow in the channel can be blocked, when the air flow on one side of the air door body 1 is large, the pressure on one side of the air door body 1 is increased, and because the air door body 1 is made of different materials and the like, the air door body 1 can bear different pressures, so that when the pressure is large, the air door 21 can be blown open through the rotating shaft by the pressure, and then the air flow flows through the through hole on the air door body 1, so that the pressure on one side of the air door body 1 is reduced, and the deformation or explosion of the air door body 1 caused by the increase of the pressure is avoided;
The height of the balancing weight 24 on the wind shield 21 can be adjusted according to the difference of the maximum pressure which can be borne by the air door body 1, when the material strength of the air door body 1 is high, the balancing weight 24 can be adjusted at the bottommost part, if the material strength of the air door body 1 is high, the balancing weight 24 can be installed with the upper square block 31, the square block 31 is magnetically attracted on the balancing weight 24 through the magnetic plate 32 to increase the total weight of the balancing weight 24, when the square block 231 magnetically attracts through the magnetic plate 32, the positioning rod 33 is needed to be inserted in the positioning hole to avoid the deviation of the square block 31, and the like, when the pressure which can be borne by the air door is small, the balancing weight 24 can be adjusted upwards, when the pressure which can be borne by the air door is small, the servo motor 251 is started, the servo motor 251 rotates to drive the winding drum 252 to rotate, the pull rope 254 can wind the surface after the winding drum 252 rotates, the pull rope 254 can pull the balancing weight 24 upwards, the distance between the balancing weight 24 and the wind shield 21 is reduced through the guide rod 232 on the square block 231, the left and right shaking of the balancing weight 24 after the balancing weight 24 moves upwards, the distance between the balancing weight 24 and the rotating shaft of the wind shield 21 is reduced, which is equivalent to the reduction of the force arm of resistance, and the force arm is required to be reduced when the balancing weight 21 is required to be turned upwards, and the pressure is reduced when the pressure is required to be adjusted to be reduced, and the pressure is required to be turned upwards and 21;
when the wind pressure is reduced, the wind pressure is insufficient to blow the wind deflector 21, and at this time, the wind deflector 21 rotates back to the vertical state by the gravity of the wind deflector 21 and the gravity of the balancing weight 24, and the air door body 1 is sealed again by the contact between the wind deflector 21 and the sealing ring 22.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. The utility model provides a colliery is interim air door in pit that can release, includes air door body (1), its characterized in that still includes:
The air door is characterized by comprising a pressure release mechanism (2), wherein the pressure release mechanism (2) comprises a wind shield (21) which is rotationally connected in a through hole of an air door body (1) through a rotating shaft, a balancing weight (24) is movably connected to the wind shield (21), a lifting component (25) which is connected with the balancing weight (24) is arranged on the air door body (1), the lifting component (25) is used for moving the balancing weight (24) in the vertical direction, a guide component (23) is arranged on the balancing weight (24), the guide component (23) is used for guiding the balancing weight (24) in the vertical direction, and a weighting component (3) is arranged on the balancing weight (24).
2. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 1, wherein: the guide assembly (23) comprises a guide rod (232) penetrating through the balancing weight (24), and a square plate (231) fixed on the wind deflector (21) is fixed at the end of the guide rod (232).
3. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 2, wherein: the guide bar (232) is hexagonal for improving the guiding accuracy in the vertical direction.
4. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 1, wherein: a sealing ring (22) is fixed on the inner wall of the through hole of the air door body (1), and the sealing ring (22) is movably connected with the surface of the wind shield (21).
5. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 1, wherein: the lifting assembly (25) comprises a servo motor (251) fixed on the air door body (1), a winding drum (252) is fixed at the end part of an output shaft of the servo motor (251), a pull rope (254) is fixed on the winding drum (252), and the bottom end of the pull rope (254) is fixed on the balancing weight (24).
6. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 5, wherein: and a baffle ring (253) is fixed on the winding drum (252) and used for preventing the wound pull rope (254) from being separated from the winding drum (252).
7. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 1, wherein: the weighting assembly (3) comprises a square block (31), and the square block (31) is arranged on the surface of the balancing weight (24).
8. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 7, wherein: a magnetic plate (32) is fixed on the square block (31), and the magnetic plate (32) is magnetically attracted to the surface of the balancing weight (24).
9. The pressure-releasable temporary damper for use in a coal mine as claimed in claim 8, wherein: the magnetic plate (32) is fixedly provided with a positioning rod (33) inserted into the round hole of the balancing weight (24) and used for preventing the square block (31) from inclining.
10. A pressure-releasable temporary damper for use in a coal mine as claimed in claim 9, wherein: the end part of the positioning rod (33) is hemispherical and is used for quickly positioning the positioning rod (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410305519.4A CN117967377A (en) | 2024-03-18 | 2024-03-18 | Colliery is with interim air door in pit that can release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410305519.4A CN117967377A (en) | 2024-03-18 | 2024-03-18 | Colliery is with interim air door in pit that can release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117967377A true CN117967377A (en) | 2024-05-03 |
Family
ID=90848098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410305519.4A Pending CN117967377A (en) | 2024-03-18 | 2024-03-18 | Colliery is with interim air door in pit that can release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117967377A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2259348A1 (en) * | 1999-01-15 | 2000-07-15 | Wayne William Kitching | Balanced ventilation doors |
| CN102979547A (en) * | 2012-12-14 | 2013-03-20 | 中煤科工集团重庆研究院 | Mine pressure relief damper with enhanced gas shock resistance |
| CN105927273A (en) * | 2016-05-26 | 2016-09-07 | 辽宁工程技术大学 | Fast closing venting door of coal mine fire area |
| CN108590731A (en) * | 2018-05-17 | 2018-09-28 | 贵州盘江精煤股份有限公司 | A kind of relief damper with pressure relief for coal mine |
| CN211011846U (en) * | 2019-11-25 | 2020-07-14 | 苏州维德姆设备科技有限公司 | Positive pressure air door of dust free room |
| CN216346983U (en) * | 2021-10-21 | 2022-04-19 | 广东良实机电工程有限公司 | Pressure relief device for dust-free chamber |
-
2024
- 2024-03-18 CN CN202410305519.4A patent/CN117967377A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2259348A1 (en) * | 1999-01-15 | 2000-07-15 | Wayne William Kitching | Balanced ventilation doors |
| CN102979547A (en) * | 2012-12-14 | 2013-03-20 | 中煤科工集团重庆研究院 | Mine pressure relief damper with enhanced gas shock resistance |
| CN105927273A (en) * | 2016-05-26 | 2016-09-07 | 辽宁工程技术大学 | Fast closing venting door of coal mine fire area |
| CN108590731A (en) * | 2018-05-17 | 2018-09-28 | 贵州盘江精煤股份有限公司 | A kind of relief damper with pressure relief for coal mine |
| CN211011846U (en) * | 2019-11-25 | 2020-07-14 | 苏州维德姆设备科技有限公司 | Positive pressure air door of dust free room |
| CN216346983U (en) * | 2021-10-21 | 2022-04-19 | 广东良实机电工程有限公司 | Pressure relief device for dust-free chamber |
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