CN110792467A - Fire extinguishing equipment for coal mine - Google Patents
Fire extinguishing equipment for coal mine Download PDFInfo
- Publication number
- CN110792467A CN110792467A CN201911165367.8A CN201911165367A CN110792467A CN 110792467 A CN110792467 A CN 110792467A CN 201911165367 A CN201911165367 A CN 201911165367A CN 110792467 A CN110792467 A CN 110792467A
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- Prior art keywords
- water tank
- side plate
- fire extinguishing
- coal mine
- sliding
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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.)
- Pending
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- 239000003245 coal Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000007921 spray Substances 0.000 claims description 27
- 238000013016 damping Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/104—Suspension devices for wheels, rollers, bogies or frames
- B62D55/108—Suspension devices for wheels, rollers, bogies or frames with mechanical springs, e.g. torsion bars
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
A fire extinguishing apparatus for coal mine belongs to the technical field of coal mine fire extinguishing. Fire extinguishing apparatus for coal mine, including the water tank, set up the shower nozzle control assembly and the shock attenuation of setting in the water tank lower part in the water tank both sides and remove the subassembly, the water tank is provided with water level window and water pump, and the shower nozzle control assembly is including first curb plate and the second curb plate that the symmetry set up, be provided with the carriage between first curb plate and the second curb plate, the carriage slides from top to bottom along first curb plate and second curb plate, be provided with the shower nozzle that a plurality of and water tank are connected on the carriage, a plurality of the shower nozzle is removed about the carriage, and the shock attenuation removes the subassembly and includes the base, sets up at the base top and the buffer beam of being connected with the water tank and sets up the. Fire extinguishing apparatus for coal mine, its greatly increased the scope that the water column covered, can adjust the distance between the shower nozzle according to the needs of intensity of a fire, control the intensity of a fire fast, the practicality is strong.
Description
Technical Field
The invention relates to the technical field of coal mine fire extinguishing, in particular to fire extinguishing equipment for a coal mine.
Background
The mine thermal hazard problem gradually appears along with the continuous increase of the mining depth of a coal mine, when the depth is larger, the temperature of the mine is higher and higher, the mine thermal hazard increases the danger of natural ignition of a goaf, and the safety production of the mine and the health of workers are seriously influenced. The existing coal mine fire extinguishing equipment has the disadvantages of small spraying range, low fire extinguishing speed, troublesome operation and low efficiency, and sometimes a plurality of equipment are required to be used together.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides fire extinguishing equipment for a coal mine, which greatly increases the coverage range of a water column, can adjust the distance between spray heads according to the fire demand, quickly controls the fire and has strong practicability.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a fire extinguishing device for coal mines comprises a water tank, spray head control assemblies arranged on two sides of the water tank and a damping moving assembly arranged on the lower portion of the water tank;
the water tank is provided with a water level window and a water pump;
the spray head control assembly comprises a first side plate and a second side plate which are symmetrically arranged, a sliding frame is arranged between the first side plate and the second side plate, the sliding frame slides up and down along the first side plate and the second side plate, a plurality of spray heads connected with a water tank are arranged on the sliding frame, and the plurality of spray heads move left and right along the sliding frame;
the damping moving assembly comprises a base, a buffer rod arranged at the top of the base and connected with the water tank and rollers arranged at the bottom of the base and used for driving the water tank to stably move.
The structure of first curb plate and second curb plate is the same, first curb plate and second curb plate all are provided with the spout that has spacing hole, the both ends of carriage all are provided with the slide button that has the gag lever post, slide button moves to the settlement position along the spout that corresponds, will the gag lever post inserts spacing hole and carries on spacingly.
The carriage is provided with slide rail and a plurality of slider along length direction, slider and slide rail sliding connection, shower nozzle and slider joint, the slider area shower nozzle slides along the slide rail.
The water level windows are arranged in two parts and symmetrically arranged on the front surface of the water tank.
The outer surface of the water level window is provided with scales.
The water pump is arranged at the top of the water tank.
The idler wheels are four and are arranged in a rectangular shape, and the crawler belts are sleeved outside the two idler wheels which are positioned on the same side of the base.
The buffer rod is provided with four, the inside interior pole and the guide arm that are provided with sliding connection of buffer rod, the guide arm overcoat is equipped with the spring, the both ends of spring are all fixed in the installing ring.
The invention has the beneficial effects that:
1) by arranging the sliding block, the spray heads, the sliding frame and the sliding groove, when the water pump is used, the water pump at the top end of the water tank can be started, then a row of spray heads on the sliding frame is opened, water columns can be sprayed out from the spray heads, the coverage range of the water columns is greatly increased, people are prevented from using a plurality of devices, and meanwhile, the sliding block can slide in the sliding frame by people according to the requirement of fire, so that the distance between the spray heads is adjusted, the fire can be controlled quickly, and the water pump is more practical;
2) through being equipped with the gyro wheel, the track, buffer beam and spring, when moving equipment in the colliery, can drive the track through the gyro wheel and remove, comparatively complicated topography in can being applicable to the colliery, when rocking about appearing at the in-process of removing, the guide arm in the buffer beam can reciprocate on the base, thereby the collar that drives one end moves on the inner pole, make the collar carry out extrusion and tensile about the spring of pole in to the inner pole, thereby reduce the vibrations that equipment produced at the removal in-process, the stability of equipment removal in-process in the colliery has been increased, and is comparatively practical.
Additional features and advantages of the invention will be set forth in part in the detailed description which follows.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a fire extinguishing apparatus for coal mine provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a showerhead control assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of the connection between the first side plate and the slide button according to the embodiment of the present invention;
FIG. 4 is a schematic structural view of a shock absorbing travel assembly provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a buffer rod according to an embodiment of the present invention.
Reference numerals in the drawings of the specification include:
1-a water tank, 2-a water level window, 3-a water pump, 4-a base, 5-a roller, 6-a crawler belt, 7-a first side plate, 8-a spray head, 9-a water pipe, 10-a chute, 11-a sliding button, 12-a limiting hole, 13-a sliding frame, 14-a sliding block, 15-a limiting rod, 16-a buffer rod, 17-a guide rod, 18-a mounting ring, 19-an inner rod, 20-a spring and 21-a second side plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In order to solve the problems in the prior art, as shown in fig. 1 to 5, an embodiment of the invention provides a fire extinguishing apparatus for a coal mine, which greatly increases the coverage range of a water column, can adjust the distance between spray heads 8 according to the fire requirement, quickly controls the fire, and has strong practicability.
As shown in fig. 1, the fire extinguishing apparatus for coal mine comprises a water tank, control assemblies of spray heads 8 arranged at the left and right sides of the water tank, and a damping moving assembly arranged at the lower part of the water tank;
the water tank is provided with two water level windows 2 and a water pump 3, wherein the two water level windows 2 are symmetrically and fixedly arranged on the front surface of the water tank, and the outer surface of the water level window 2 is provided with scales; the water pump 3 is fixedly arranged at the top of the water tank;
the spray head 8 control assembly comprises a first side plate 7 and a second side plate 21 which are symmetrically arranged, a sliding frame 13 is arranged between the first side plate 7 and the second side plate 21, the sliding frame 13 slides up and down along the first side plate 7 and the second side plate 21 to adjust the height of the spray head 8, the sliding frame 13 is provided with a plurality of spray heads 8 connected with the water tank, the plurality of spray heads 8 move left and right along the sliding frame 13, and the spray heads 8 are connected with the water tank through water pipes 9;
the damping moving assembly comprises a base 4, a buffer rod 16 arranged at the top of the base 4 and connected with the water tank and a roller 5 arranged at the bottom of the base 4, and is used for driving the water tank to stably move.
As shown in fig. 2 and fig. 3, the first side plate 7 and the second side plate 21 have the same structure, and the first side plate 7 and the second side plate 21 are symmetrically disposed on the side of the water tank, the first side plate 7 and the second side plate 21 are both provided with the sliding grooves 10 with the limiting holes 12, a plurality of limiting holes 12 on the same sliding groove 10 are arranged in a straight line shape, the two ends of the sliding frame 13 are fixedly connected with the sliding buttons 11 with the limiting rods 15, one end of each limiting rod 15 is fixedly connected with the sliding button 11, the other end of each limiting rod 15 is matched with the corresponding limiting hole 12, the sliding buttons 11 are slidably connected with the corresponding sliding grooves 10, and the working process is as follows: when the height of the sliding frame 13 needs to be adjusted, the limiting rod 15 of the sliding button 11 needs to be firstly pulled out from the limiting hole 12, so that the other end of the limiting rod 15 is separated from the limiting hole 12 of the sliding chute 10, the sliding button 11 moves to a set position along the corresponding sliding chute 10, and the limiting rod 15 is inserted into the limiting hole 12 for limiting. Carriage 13 is provided with slide rail and a plurality of slider 14 along length direction, slider 14 and slide rail sliding connection, and the one end card of shower nozzle 8 is established in slider 14, and slider 14 takes shower nozzle 8 to slide along the slide rail, can slide slider 14 in carriage 13 according to the needs of intensity of a fire to adjust the distance between the shower nozzle 8, can be relatively fast with intensity of a fire control.
As shown in fig. 4, the rollers 5 are four, the four rollers 5 are arranged in a rectangular shape, the crawler belts 6 are sleeved outside the two rollers 5 which are positioned on the same side of the base 4, the rollers 5 are in transmission connection with the crawler belts 6, and the rollers 5 drive the crawler belts 6 to move, so that the roller device can be applied to complex terrains in a coal mine. Four buffer rods 16 are fixedly mounted at the top of the base 4, the top end of each buffer rod 16 is fixedly connected with the water tank, an inner rod 19 and a guide rod 17 which are connected in a sliding manner are arranged inside each buffer rod 16, a spring 20 is sleeved outside each guide rod 17, the two ends of each spring 20 are fixed in a mounting ring 18, and the concrete setting mode is as follows: one end of the inner rod 19 is fixedly connected with the buffer rod 16, the other end of the inner rod 19 is inserted into the guide rod 17 and is in sliding connection with the guide rod 17, the inner rod 19 can slide up and down in the guide rod 17 to achieve telescopic effect, a spring 20 is sleeved outside the inner rod 19 to play a role in buffering, two ends of the spring 20 are fixed in the mounting rings 18, one mounting ring 18 is fixedly connected with the guide rod 17, the other mounting ring 18 is fixedly connected with the buffer rod 16, the mounting rings 18 vertically extrude and stretch the spring 20 on the inner rod 19, and therefore vibration generated in the moving process of the equipment is reduced.
The working principle of the invention is as follows:
as shown in fig. 1 to 3, when in use, the water pump 3 at the top end of the water tank is started, and then the row of spray heads 8 on the sliding frame 13 is opened, so that water columns can be sprayed out from the spray heads 8, the coverage range of the water columns is greatly enlarged, and people are prevented from using a plurality of devices; meanwhile, people can slide the sliding block 14 in the sliding frame 13 according to the requirement of fire, so that the distance between the spray heads 8 is adjusted, the fire can be controlled quickly, and the fire extinguishing device is practical; when the height of the sliding frame 13 needs to be adjusted, the limiting rod 15 of the sliding button 11 needs to be pulled out first, so that the other end of the limiting rod 15 is separated from the limiting hole 12 of the sliding chute 10, then the sliding frame 13 slides up and down along the sliding chute 10, the height of the spray head 8 is adjusted, and after the position is adjusted, the limiting rod 15 is inserted into the corresponding limiting hole 12, the sliding button 11 is fixed, and the sliding frame 13 is fixed;
as shown in fig. 4 and 5, when moving the equipment in the coal mine, can drive track 6 through gyro wheel 5 and move, can be applicable to comparatively complicated topography in the coal mine, when rock from top to bottom at the in-process that removes, guide arm 17 in buffer beam 16 on base 4 can reciprocate, thereby the collar 18 that drives one end moves on interior pole 19, make collar 18 carry out extrusion and tensile from top to bottom to spring 20 on interior pole 19, thereby reduce the vibrations that equipment produced at the removal in-process, the stability of equipment removal in-process in the coal mine has been increased, and is comparatively practical.
In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures may refer to general designs, and the same embodiment and different embodiments of the present invention may be combined with each other without conflict.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. Fire extinguishing equipment for coal mines is characterized by comprising a water tank, spray head control assemblies arranged on two sides of the water tank and a damping moving assembly arranged on the lower portion of the water tank;
the water tank is provided with a water level window and a water pump;
the spray head control assembly comprises a first side plate and a second side plate which are symmetrically arranged, a sliding frame is arranged between the first side plate and the second side plate, the sliding frame slides up and down along the first side plate and the second side plate, a plurality of spray heads connected with a water tank are arranged on the sliding frame, and the plurality of spray heads move left and right along the sliding frame;
the damping moving assembly comprises a base, a buffer rod arranged at the top of the base and connected with the water tank and rollers arranged at the bottom of the base and used for driving the water tank to stably move.
2. The fire extinguishing apparatus for coal mines according to claim 1, wherein the first side plate and the second side plate have the same structure, the first side plate and the second side plate are provided with sliding grooves with limiting holes, sliding buttons with limiting rods are arranged at both ends of the sliding frame, and the sliding buttons move to set positions along the corresponding sliding grooves to insert the limiting rods into the limiting holes for limiting.
3. The fire extinguishing apparatus for coal mines according to claim 1, wherein the carriage is provided with a slide rail and a plurality of slide blocks along the length direction, the slide blocks are slidably connected with the slide rail, the spray head is clamped with the slide blocks, and the slide blocks drive the spray head to slide along the slide rail.
4. The fire fighting apparatus for coal mine according to claim 1, wherein the water level window is provided in two pieces and symmetrically provided on a front surface of the water tank.
5. The fire fighting apparatus for coal mine according to claim 1, wherein an outer surface of the water level window is provided with a scale.
6. The fire fighting apparatus for coal mines according to claim 1, wherein the water pump is disposed at a top of the water tank.
7. The fire fighting apparatus for coal mine as recited in claim 1, wherein there are four rollers, four rollers are arranged in a rectangular arrangement, and the two rollers on the same side of the base are externally sleeved with caterpillar tracks.
8. The fire extinguishing apparatus for coal mines according to claim 1, wherein four buffer rods are provided, an inner rod and a guide rod are slidably connected inside the buffer rods, a spring is sleeved outside the guide rod, and both ends of the spring are fixed in the mounting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165367.8A CN110792467A (en) | 2019-11-25 | 2019-11-25 | Fire extinguishing equipment for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165367.8A CN110792467A (en) | 2019-11-25 | 2019-11-25 | Fire extinguishing equipment for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110792467A true CN110792467A (en) | 2020-02-14 |
Family
ID=69446033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911165367.8A Pending CN110792467A (en) | 2019-11-25 | 2019-11-25 | Fire extinguishing equipment for coal mine |
Country Status (1)
| Country | Link |
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| CN (1) | CN110792467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112076411A (en) * | 2020-09-03 | 2020-12-15 | 辽宁工程技术大学 | Large-space spraying fire extinguishing device for coal mine fire |
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|---|---|---|---|---|
| GB191007478A (en) * | 1910-03-26 | 1910-12-08 | Alfred Morgan | An Improved Tank for Watering Mines. |
| GB104560A (en) * | 1916-03-21 | 1917-03-15 | Lemuel Phillips | A Watering Tank and Spray Producer particularly for use in Coal Mines. |
| CN204804869U (en) * | 2015-07-12 | 2015-11-25 | 河北科技大学 | Automatic spray dust removal device is used in tunnel |
| CN106621122A (en) * | 2016-11-05 | 2017-05-10 | 合肥辰泰安全设备有限责任公司 | Spray head installation frame of bus fire extinguishing system |
| CN107320888A (en) * | 2017-07-27 | 2017-11-07 | 张健 | A kind of sprinkling fire equipment of fence type |
| CN206647132U (en) * | 2017-03-27 | 2017-11-17 | 江苏建筑职业技术学院 | A kind of portable mine wet shot dust arrester |
| CN206867546U (en) * | 2017-05-18 | 2018-01-12 | 四川威利安特消防科技有限公司 | Novel firefighting sandbox |
| CN108704230A (en) * | 2018-06-02 | 2018-10-26 | 张伟萍 | A kind of structural fire protection multi-function emergency fire hydrant cabinet |
| CN208130268U (en) * | 2018-03-29 | 2018-11-23 | 山西华润联盛能源投资有限公司 | A kind of coal mine moving formula extinguishing device |
| CN109268057A (en) * | 2018-11-28 | 2019-01-25 | 华北科技学院 | A kind of Automatic Control coal mine work area fire extinguishing explosion-protection equipment |
| CN208633866U (en) * | 2018-07-10 | 2019-03-22 | 贵州政立矿业有限公司 | A kind of atomizing de-dusting apparatus convenient for fixed installation |
| CN208990114U (en) * | 2018-09-07 | 2019-06-18 | 郭超 | A kind of firefighting fire extinguishing robot |
| CN110094227A (en) * | 2019-05-04 | 2019-08-06 | 姚福泉 | A kind of mining temperature-controlled liquid nitrogen fire-extinguishing apparatus |
-
2019
- 2019-11-25 CN CN201911165367.8A patent/CN110792467A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191007478A (en) * | 1910-03-26 | 1910-12-08 | Alfred Morgan | An Improved Tank for Watering Mines. |
| GB104560A (en) * | 1916-03-21 | 1917-03-15 | Lemuel Phillips | A Watering Tank and Spray Producer particularly for use in Coal Mines. |
| CN204804869U (en) * | 2015-07-12 | 2015-11-25 | 河北科技大学 | Automatic spray dust removal device is used in tunnel |
| CN106621122A (en) * | 2016-11-05 | 2017-05-10 | 合肥辰泰安全设备有限责任公司 | Spray head installation frame of bus fire extinguishing system |
| CN206647132U (en) * | 2017-03-27 | 2017-11-17 | 江苏建筑职业技术学院 | A kind of portable mine wet shot dust arrester |
| CN206867546U (en) * | 2017-05-18 | 2018-01-12 | 四川威利安特消防科技有限公司 | Novel firefighting sandbox |
| CN107320888A (en) * | 2017-07-27 | 2017-11-07 | 张健 | A kind of sprinkling fire equipment of fence type |
| CN208130268U (en) * | 2018-03-29 | 2018-11-23 | 山西华润联盛能源投资有限公司 | A kind of coal mine moving formula extinguishing device |
| CN108704230A (en) * | 2018-06-02 | 2018-10-26 | 张伟萍 | A kind of structural fire protection multi-function emergency fire hydrant cabinet |
| CN208633866U (en) * | 2018-07-10 | 2019-03-22 | 贵州政立矿业有限公司 | A kind of atomizing de-dusting apparatus convenient for fixed installation |
| CN208990114U (en) * | 2018-09-07 | 2019-06-18 | 郭超 | A kind of firefighting fire extinguishing robot |
| CN109268057A (en) * | 2018-11-28 | 2019-01-25 | 华北科技学院 | A kind of Automatic Control coal mine work area fire extinguishing explosion-protection equipment |
| CN110094227A (en) * | 2019-05-04 | 2019-08-06 | 姚福泉 | A kind of mining temperature-controlled liquid nitrogen fire-extinguishing apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112076411A (en) * | 2020-09-03 | 2020-12-15 | 辽宁工程技术大学 | Large-space spraying fire extinguishing device for coal mine fire |
| CN112076411B (en) * | 2020-09-03 | 2021-08-03 | 辽宁工程技术大学 | Large-space spraying fire extinguishing device for coal mine fire |
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Application publication date: 20200214 |