CN115770376A - Automatic fire extinguishing device - Google Patents
Automatic fire extinguishing device Download PDFInfo
- Publication number
- CN115770376A CN115770376A CN202211658710.4A CN202211658710A CN115770376A CN 115770376 A CN115770376 A CN 115770376A CN 202211658710 A CN202211658710 A CN 202211658710A CN 115770376 A CN115770376 A CN 115770376A
- Authority
- CN
- China
- Prior art keywords
- dry powder
- fire extinguishing
- tank
- extinguishing tank
- powder fire
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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.)
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- 239000000843 powder Substances 0.000 claims abstract description 111
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000000779 smoke Substances 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000007664 blowing Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the technical field of fire fighting equipment, and particularly discloses an automatic fire extinguishing device which comprises a dry powder fire extinguishing tank, a fixing mechanism, a controller and a smoke detector electrically connected with the controller, wherein the dry powder fire extinguishing tank comprises a tank body and an air bag, the fixing mechanism comprises a mounting top plate, a supporting plate and a plurality of connecting rods uniformly arranged between the mounting top plate and the supporting plate, a tank rotating mechanism used for driving the dry powder fire extinguishing tank to rotate is further arranged between the mounting top plate and the top of the dry powder fire extinguishing tank, the bottom of the dry powder fire extinguishing tank is rotatably connected with the supporting plate, a spray pipe penetrating through the dry powder fire extinguishing tank and the supporting plate is arranged at the bottom of the air bag, a plurality of spray heads are further arranged at the tail end of the spray pipe, and a supercharging mechanism used for compressing the air bag and spraying dry powder to the spray heads is further arranged in the dry powder fire extinguishing tank.
Description
Technical Field
The application relates to the technical field of fire fighting equipment, and particularly discloses an automatic fire extinguishing device.
Background
The fire extinguishing equipment is necessary for fire prevention in most public places, and common fire extinguishing equipment comprises a foam fire extinguisher, a dry powder fire extinguisher, a carbon dioxide fire extinguisher, a clear water fire extinguisher and the like. In real life, a lot of conflagration scene often can't be found the very first time by people, still because of the restriction in on-the-spot place, for example when a fire in district high building, fire extinguishing equipment need build the use platform and just can implement to put out a fire, and fire extinguishing equipment's service condition is comparatively harsh and inconvenient, aims at the very first time implementation to put out a fire at the place installation automatic fire extinguishing device of easily taking place the conflagration usually.
Patent publication is CN 110327563A's an automatic fire extinguishing device, including open-top's hutch, hutch open-top department is equipped with the case lid, and the hutch is filled with the powder of putting out a fire, and hutch one side is installed perpendicularly and is blown the fan, and the hutch opposite side is equipped with the pipe shape spray tube of putting out a fire perpendicularly, and it is coaxial with the spray tube of putting out a fire to blow the fan, installs numerical control switch on blowing the fan, and installs smoke transducer on the hutch, and smoke transducer passes through the data line and is connected with numerical control switch.
Although the device can automatically implement fire extinguishing work on equipment at the first time when a fire disaster occurs, and reduce loss caused by the fire disaster, the device uses the blowing fan to produce an air source on a fire disaster site to achieve the purpose of blowing and scattering dry powder, drives high-speed circulation of air on the fire disaster site, easily increases the site fire behavior, and has great potential safety hazard.
Disclosure of Invention
The invention aims to solve the problems that the traditional automatic fire extinguishing device adopts a blowing fan to produce wind power on site to spread dry powder for fire extinguishing, drives the high-speed circulation of air on a fire scene, is easy to increase the scene fire and has potential safety hazard.
In order to achieve the purpose, the basic scheme of the invention provides an automatic fire extinguishing device which comprises a dry powder fire extinguishing tank, a fixing mechanism for mounting the dry powder fire extinguishing tank in an inverted mode, a controller and a smoke detector electrically connected with the controller, wherein the dry powder fire extinguishing tank comprises a tank body and an air bag which is arranged in the tank body and used for containing dry powder, the fixing mechanism comprises a mounting top plate detachably connected with a field site, a supporting plate used for supporting the dry powder fire extinguishing tank and a plurality of connecting rods uniformly arranged between the mounting top plate and the supporting plate, a tank rotating mechanism used for driving the dry powder fire extinguishing tank to rotate is further arranged between the mounting top plate and the top of the dry powder fire extinguishing tank, the bottom of the dry powder fire extinguishing tank is rotatably connected with the supporting plate, a spray pipe penetrating through the dry powder fire extinguishing tank and the supporting plate is arranged at the bottom of the air bag, a plurality of spray nozzles are further arranged at the tail end of the spray pipe, and a supercharging mechanism used for compressing the air bag and enabling the spray nozzles to spray dry powder is further arranged in the dry powder fire extinguishing tank.
The principle and effect of this basic scheme lie in:
1. according to the invention, by arranging the rotary tank mechanism, the dry powder in the dry powder fire extinguishing tank is shaken, so that the mixture of the dry powder is more sufficiently and uniformly mixed, and the dry powder which is more exquisite and more uniformly mixed is sprayed out to extinguish fire, so that the optimal fire extinguishing effect is achieved, and the dry powder is more uniform when released, so that the coverage area of the dry powder on the surrounding environment is favorably enlarged, and the fire extinguishing effect is better and more comprehensive.
2. The dry powder fire extinguishing tank is fixed in an inverted manner by the fixing mechanism, so that the dry powder fire extinguishing tank is beneficial to outputting the dry powder in the dry powder fire extinguishing tank, the dry powder fire extinguishing tank is arranged and used at a high position, no spatial movement obstruction or crowding is caused in daily life, meanwhile, the dry powder fire extinguishing tank is arranged at the high position in an inverted manner, and the smoke detector can be combined according to the upward floating characteristic of fire dense smoke, so that the field smoke data can be detected and judged more conveniently and rapidly, and higher dry powder coverage rate and wider dry powder coverage area can be achieved by spraying the dry powder at the high position when a fire occurs.
3. Compared with the prior art, the automatic fire extinguishing device is provided with the air bag for containing dry powder and the supercharging mechanism, when the data of the smoke detector is abnormal, the aim of spraying the dry powder outwards is achieved by compressing the air bag and releasing the air bag, on the premise that the air flow rate of a fire scene is not changed at a high speed, the dry powder is broadcast, the aim of extinguishing a fire is achieved, the fire intensity is avoided, the fire extinguishing efficiency is improved, the problem that the traditional automatic fire extinguishing device adopts a blowing fan to broadcast the dry powder in a wind power mode on the scene to extinguish the fire, the high-speed circulation of air on the fire scene is driven, the scene fire intensity is easily increased, and the potential safety hazard exists is solved.
Further, a dry powder supplementing pipeline communicated with the air bag is arranged at the bottom of the dry powder fire extinguishing tank. Through setting up the dry powder and supplementing the pipeline, be convenient for supply the dry powder in the gasbag in the dry powder fire extinguishing jar, avoid whole dry powder fire extinguishing jar demolish the replacement, convenient to use.
Further, change a jar mechanism including establish the baffle between layer board and installation roof and demountable installation the motor on the baffle, dry powder fire suppression jar both ends rotate with baffle and layer board respectively and are connected, the motor output pass the baffle and with dry powder fire suppression jar top coaxial coupling, the motor is connected with the controller electricity. The motor is arranged to drive the dry powder fire extinguishing tank to rotate, the rotation of the dry powder fire extinguishing tank is realized, the uniform mixing of the internal dry powder components is achieved, the motor and the dry powder fire extinguishing tank are supported and fixed through the arrangement of the partition plate, and the stability of the whole structure is improved.
Further, booster mechanism includes the lead screw of being connected with motor output coaxial, with the ball slider of lead screw cooperation connection and establish the piston in ball slider bottom, piston and dry powder fire extinguishing jar inner wall sliding connection. The motor output is arranged to drive the screw rod to be matched with the ball sliding block so as to drive the piston to move, and when the motor drives the dry powder extinguishing tank to rotate, the motor drives the piston to do linear motion so as to exert pressure on the air bag to enable the air bag to deflate, so that the purposes of releasing and spraying dry powder to extinguish fire are achieved.
Furthermore, the top of the dry powder fire extinguishing tank is symmetrically provided with a limiting ring, the bottom of the partition plate is provided with a limiting seat, and the limiting ring is rotatably connected with the limiting seat. Through setting up spacing ring and spacing seat, realize spacing and fixed the installation of dry powder fire extinguishing jar, when improving structural stability, still can cooperate the rotation that the dry powder fire extinguishing jar was realized to the motor.
Furthermore, a buzzer alarm can be detachably mounted on the partition plate and is electrically connected with the controller. Through setting up the buzzer siren, be convenient for send alarm signal to the personnel on scene when smog detects unusually to in time make the counter measure of putting out a fire or fleing.
Further, the smoke detector stands upside down and is detachably arranged at the bottom of the partition plate. Install in the baffle bottom through standing upside down the smog detection instrument, install whole device in the eminence simultaneously, be favorable to directly detecting the smog that has wafted, improved smog detection's efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a perspective view showing an automatic fire extinguishing apparatus according to an embodiment of the present invention;
fig. 2 is a front view showing the structure of an automatic fire extinguishing apparatus according to an embodiment of the present application.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Reference numerals in the drawings of the specification include: the dry powder fire extinguishing tank comprises a dry powder fire extinguishing tank 1, a smoke detector 2, a mounting top plate 3, a supporting plate 4, a connecting rod 5, a screw fastener 6, a partition plate 7, a motor 8, a protective cover 9, a buzzer alarm 10, a limiting ring 11, a limiting seat 12, a spray pipe 13, a spray head 14, an air bag 15, a dry powder supplementing pipeline 16, a tank body 17, a lead screw 18, a ball sliding block 19 and a piston 20.
An automatic fire extinguishing apparatus, the embodiment is shown in figure 1: the dry powder fire extinguishing tank comprises a dry powder fire extinguishing tank 1, a fixing mechanism for mounting the dry powder fire extinguishing tank 1 in an inverted mode, a smoke detector 2 and a controller, wherein the controller comprises but is not limited to a PLC (programmable logic controller), the dry powder fire extinguishing tank 1 comprises a tank body 17 and an air bag 15, the tank body 17 is shown in figure 2, the air bag 15 is arranged in the tank body 17 and used for containing dry powder, the fixing mechanism comprises a mounting top plate 3 detachably connected with a field site, a supporting plate 4 used for supporting the dry powder fire extinguishing tank 1 and four connecting rods 5 uniformly arranged between the mounting top plate 3 and the supporting plate 4, the field site comprises but is not limited to a building ceiling, a high place in a house kitchen and other high places in the building, and the mounting top plate 3 and the field site comprise but are not limited to be detachably connected and fixed through screw fasteners 6 or hung and fixed through hooks in the prior art. As shown in fig. 2, a rotary tank mechanism for driving the dry powder fire extinguishing tank 1 to rotate is further arranged between the mounting top plate 3 and the top of the dry powder fire extinguishing tank 1, the rotary tank mechanism comprises a partition plate 7 arranged between the supporting plate 4 and the mounting top plate 3 and a motor 8 detachably mounted on the partition plate 7, and a protective cover 9 detachably connected with the partition plate 7 is further arranged on the outer side of the motor 8.
As shown in fig. 1, the smoke detector 2 is arranged at the bottom of the partition board 7 in a handstand detachable manner, the smoke detector 2 is provided with a critical preset value of smoke concentration, two ends of the dry powder fire extinguishing tank 1 are respectively connected with the partition board 7 and the supporting plate 4 in a rotating manner, the partition board 7 is also provided with a buzzer alarm 10 in a detachable manner, and the buzzer alarm 10 is electrically connected with the controller. As shown in fig. 2, the top of the dry powder fire extinguishing tank 1 is symmetrically provided with a limiting ring 11, the bottom of the partition plate 7 is provided with a limiting seat 12, the limiting ring 11 is rotatably connected with the limiting seat 12, the output end of the motor 8 penetrates through the partition plate 7 and is coaxially connected with the top of the dry powder fire extinguishing tank 1, the motor 8 is electrically connected with the controller, the bottom of the dry powder fire extinguishing tank 1 is rotatably connected with the supporting plate 4, the bottom of the dry powder fire extinguishing tank 1 is provided with a spray pipe 13 penetrating through the supporting plate 4, the tail end of the spray pipe 13 is further provided with three spray nozzles 14, the dry powder fire extinguishing tank 1 is further internally provided with a pressurization mechanism for compressing the air bag 15 and spraying dry powder by the spray nozzles 14, the pressurization mechanism comprises a lead screw 18 coaxially connected with the output end of the motor 8, a ball slide block 19 connected with the lead screw 18 in a matched manner and a piston 20 arranged at the bottom of the ball slide block 19, the piston 20 is slidably connected with the inner wall of the dry powder fire extinguishing tank 1, and the bottom of the dry powder fire extinguishing tank 1 is further provided with a dry powder supplement pipeline 16 communicated with the air bag 15.
In the specific implementation process of the invention, when a fire occurs in a field, smoke occurs in the field due to flame combustion, the smoke detector 2 detects that the concentration of the smoke in the field changes, when the concentration of the smoke reaches a preset value, the controller receives abnormal smoke concentration data of the smoke detector 2, the controller controls the motor 8 to be electrified and starts working, the motor 8 starts outputting to drive the dry powder extinguishing tank 1 to rotate, the dry powder extinguishing tank 1 drives the dry powder therein to rotate at a high speed, structural substances in the dry powder collide and fuse with each other under the high-speed motion to be fully and uniformly mixed, meanwhile, an output shaft of the motor 8 rotates to drive the lead screw 18 to rotate, the lead screw 18 rotates and is matched with the ball slide block 19 to drive the ball slide block 19 to slide downwards along the lead screw 18, the piston 20 drives the piston 20 at the bottom of the ball slide block 19 to downwards, the air bag 15 is compressed when the piston 20 moves downwards, the air bag 15 is extruded from the dry powder 15 at a high pressure and is sprayed out from the three spray nozzles 14, the dry powder is continuously sprayed under the action of the rotary output action of the piston 20, the rotary nozzles 14, the alarm is distributed and the alarm is started to emit a buzzing alarm, and the alarm is sounded to be used for further, and the fire alarm when the fire escape, and the alarm is sounded to be used for controlling the fire.
Compared with the prior art, the dry powder containing and pressurizing mechanism is arranged in the automatic fire extinguishing device, when the data of the smoke detector 2 is abnormal, the motor 8 is arranged to output to drive the lead screw 18 to be matched with the ball slide block 19 so as to drive the piston 20 to move, the air bag 15 in the dry powder fire extinguishing tank 1 is extruded and deflated, the aim of extinguishing fire by spraying dry powder outwards is achieved by compressing the air bag 15 and releasing the air bag 15, meanwhile, the motor 8 also outputs to drive the dry powder fire extinguishing tank 1 to rotate, so that the effects of mixing the dry powder and expanding the dry powder coverage area by rotating the spray head 14 are achieved, the fire extinguishing effect is better, on the premise that the air flow rate of a fire scene is not changed at high speed, the dry powder is broadcast so as to achieve the aim of extinguishing fire, the fire intensity is avoided, the fire extinguishing efficiency is improved, the problem that the air of the fire scene is easily increased and the potential safety hazard exists is solved.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. An automatic fire extinguishing device is characterized in that: including dry powder fire extinguishing tank, be used for handstand fixed establishment, the controller of installation dry powder fire extinguishing tank and the smog detection instrument of being connected with the controller electricity, dry powder fire extinguishing tank includes jar body and establishes the gasbag that is used for holding the dry powder at jar internal, fixed establishment includes can dismantle the installation roof of being connected with the scene place, a plurality of connecting rods that are used for supporting dry powder fire extinguishing tank's layer board and evenly establish between installation roof and layer board, still be equipped with the change jar mechanism that is used for driving dry powder fire extinguishing tank rotation between installation roof and the dry powder fire extinguishing tank top, dry powder fire extinguishing tank bottom is connected with the layer board rotation, the gasbag bottom is equipped with the spray tube that passes dry powder fire extinguishing tank and layer board, the spray tube end still is equipped with a plurality of shower nozzles, still be equipped with the booster mechanism that is used for compressing the gasbag and makes the shower nozzle spray the dry powder in the dry powder fire extinguishing tank.
2. The automatic fire extinguishing apparatus according to claim 1, wherein the dry powder extinguishing tank is provided at a bottom thereof with a dry powder replenishing pipe communicating with the air bag.
3. An automatic fire extinguishing apparatus according to claim 1, wherein the rotary tank mechanism comprises a partition plate arranged between the supporting plate and the mounting top plate and a motor detachably mounted on the partition plate, two ends of the dry powder fire extinguishing tank are rotatably connected with the partition plate and the supporting plate respectively, an output end of the motor penetrates through the partition plate and is coaxially connected with the top of the dry powder fire extinguishing tank, and the motor is electrically connected with the controller.
4. The automatic fire extinguishing device according to claim 3, wherein the pressurizing mechanism comprises a screw coaxially connected with the output end of the motor, a ball slide cooperatively connected with the screw, and a piston arranged at the bottom of the ball slide, and the piston is slidably connected with the inner wall of the dry powder extinguishing tank.
5. The automatic fire extinguishing device according to claim 4, wherein the top of the dry powder fire extinguishing tank is symmetrically provided with a limiting ring, the bottom of the partition plate is provided with a limiting seat, and the limiting ring is rotatably connected with the limiting seat.
6. An automatic fire extinguishing apparatus according to any one of claims 3 to 5, wherein a buzzer alarm is detachably mounted on the partition, and the buzzer alarm is electrically connected with the controller.
7. The automatic fire extinguishing apparatus according to claim 6, wherein the smoke detector is detachably mounted on the bottom of the partition in an inverted state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658710.4A CN115770376A (en) | 2022-12-22 | 2022-12-22 | Automatic fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658710.4A CN115770376A (en) | 2022-12-22 | 2022-12-22 | Automatic fire extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115770376A true CN115770376A (en) | 2023-03-10 |
Family
ID=85392767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211658710.4A Pending CN115770376A (en) | 2022-12-22 | 2022-12-22 | Automatic fire extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115770376A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754562A (en) * | 2018-12-11 | 2019-05-14 | 中冶(北京)交通科技发展有限公司 | A kind of municipal administration synthesis pipe gallery alarm system |
| CN112337023A (en) * | 2020-11-05 | 2021-02-09 | 安徽飞达消防设备工程有限公司 | Pressure-storage suspension type superfine dry powder fire extinguishing equipment |
| CN215645493U (en) * | 2021-08-26 | 2022-01-25 | 珠海市可利电气有限公司 | But vertical switch board for indoor power transmission of prevention conflagration |
| CN216703243U (en) * | 2021-11-09 | 2022-06-10 | 南京空鹰***工程有限公司 | Suspension type superfine dry powder extinguishing device |
| CN217472632U (en) * | 2022-03-23 | 2022-09-23 | 深圳市鸿海盛特种消防科技有限公司 | High-flow type superfine dry powder fire extinguishing device |
-
2022
- 2022-12-22 CN CN202211658710.4A patent/CN115770376A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754562A (en) * | 2018-12-11 | 2019-05-14 | 中冶(北京)交通科技发展有限公司 | A kind of municipal administration synthesis pipe gallery alarm system |
| CN112337023A (en) * | 2020-11-05 | 2021-02-09 | 安徽飞达消防设备工程有限公司 | Pressure-storage suspension type superfine dry powder fire extinguishing equipment |
| CN215645493U (en) * | 2021-08-26 | 2022-01-25 | 珠海市可利电气有限公司 | But vertical switch board for indoor power transmission of prevention conflagration |
| CN216703243U (en) * | 2021-11-09 | 2022-06-10 | 南京空鹰***工程有限公司 | Suspension type superfine dry powder extinguishing device |
| CN217472632U (en) * | 2022-03-23 | 2022-09-23 | 深圳市鸿海盛特种消防科技有限公司 | High-flow type superfine dry powder fire extinguishing device |
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| PB01 | Publication | ||
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Application publication date: 20230310 |