CN110711334B - Fire extinguishing device capable of aiming at different fire sources - Google Patents
Fire extinguishing device capable of aiming at different fire sources Download PDFInfo
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- CN110711334B CN110711334B CN201911077512.7A CN201911077512A CN110711334B CN 110711334 B CN110711334 B CN 110711334B CN 201911077512 A CN201911077512 A CN 201911077512A CN 110711334 B CN110711334 B CN 110711334B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C19/00—Hand fire-extinguishers in which the extinguishing substance is expelled by an explosion; Exploding containers thrown into the fire
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a fire extinguishing device aiming at different fire sources, which comprises a water tank, wherein a water through cavity with a downward opening is arranged in the water tank, eight sequencing barrels are distributed on the end face of the outer side of the water passing cavity in an array manner, a falling cavity is arranged in each sequencing barrel, the falling cavity is connected with four fire extinguishing bombs in a sliding way, the sequencing barrel is internally provided with a projecting device, the fire extinguishing device judges the type of fire by manpower, the flowing path of water flow is controlled by signals, the modes of water spraying fire extinguishing or dry powder fire extinguishing are switched, the fire extinguishing work corresponding to different fire sources is realized, meanwhile, the throwing mode is different from the initial height, the fire extinguishing bomb with the communicated weight has different kinetic energy, the elastic potential energy that the effect turns into the spring promptly is different for the position of launching is different, realizes the omnidirectional covering formula work of putting out a fire, promotes the fire extinguishing efficiency of the bullet of putting out a fire, also avoids bigger property and security threat.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment, in particular to a fire extinguishing device aiming at different fire sources.
Background
Fire safety issues in public places have long been a major concern for governments. Because the combustion materials of different types of fire sources are different and the chemical properties and the physical properties of the combustion materials are different, different treatment modes are required under the combustion conditions of different types of fire sources. However, the existing smoke sensor can only spray water when a fire breaks out to extinguish the fire, and once the smoke sensor meets flammable liquid or burns with electricity, the fire situation is aggravated, and secondary harm is caused to the environment. The present invention sets forth a device that solves the above problems.
Disclosure of Invention
The technical problem is as follows:
the existing smoke sensor can only spray water when a fire disaster occurs to carry out fire extinguishing work, and once the smoke sensor meets flammable liquid or burns with electricity, the fire disaster situation is aggravated, and secondary harm is caused to the environment.
In order to solve the problems, the fire extinguishing device aiming at different fire sources is designed in the embodiment, the fire extinguishing device aiming at different fire sources comprises a water tank, a water through cavity with a downward opening is arranged in the water tank, eight sequencing barrels are distributed on the end face of the outer side of the water through cavity in an array mode, a falling cavity is arranged in each sequencing barrel, four fire extinguishing bombs are connected in each falling cavity in a sliding mode, a projecting device is arranged in each sequencing barrel, each projecting device comprises a projecting port, a projecting arm and a torque spring, the projecting ports are arranged on the inner wall, far away from the center side of the array, of the falling cavity, the projecting arms are rotatably connected in the projecting ports and can be abutted to the fire extinguishing bombs, the torque springs are connected between the projecting arms and the projecting ports, the projecting arms are rotated by the elasticity of the torque springs to project the fire extinguishing bombs at the lowest, the ejection device comprises a limiting block fixed on the ejection arm and positioned in the falling cavity, a hook rotatably connected in the limiting block, a resistance spring connected at the lower end of the hook, and an ejection plate connected at the lower end of the resistance spring, the kinetic energy caused by downward movement of the fire extinguishing bomb is converted into the elastic potential energy of the resistance spring and reacts on the fire extinguishing bomb to emit the fire extinguishing bomb to the outside for fire extinguishing, a water separation tank is arranged in the water through cavity, a transmission cavity is arranged in the water separation tank, a limiting device for locking the hook is arranged in the transmission cavity, the limiting device comprises a sliding groove arranged on the inner wall of the sequencing barrel close to the center side of the array, and a sliding hook which is connected in the sliding groove in a sliding manner and can be abutted against the hook, the sliding hook is abutted against the hook to limit the movement of the sliding hook, a water storage cavity is arranged at the upper end, the diversion device comprises a spherical faucet arranged on the inner wall of the upper end of the water storage cavity, a water inlet communicated with the upper side of the spherical faucet, and a valve connected in the spherical faucet in a sliding manner, wherein the diameter of the valve is smaller than that of the spherical faucet, and the position of the valve is changed to ensure that the flowing directions of water are different, so that different fire extinguishing modes are changed.
Preferably, the inner wall of the top end of the water passing cavity is communicated with the outside to form a water pipe, the diameter of the water pipe is smaller than that of the water inlet, a connecting plate is fixedly arranged on the outer side of the upper end of the water passing cavity, a water drainage pipe is arranged on the inner wall of the rear end of the water storage cavity and communicated with the outside, and a spherical valve is rotatably connected in the water drainage pipe.
Preferably, the limiting block is an L-shaped groove block structure.
The projecting device further comprises a sealing plate which is rotatably connected in the emitting port and is positioned at the upper end of the projecting arm, a return spring is connected between the sealing plate and the emitting port, and the elasticity of the return spring is smaller than that of the torque spring.
The limiting device further comprises a telescopic rod arranged at the lower end of the sliding hook and connected with the sliding groove in a sliding mode, the sliding hook is provided with balls located in the transmission cavity, compression springs are connected between the balls and the inner wall of the transmission cavity, the inner wall of the top end of the transmission cavity is connected with a lifting rod extending to the water storage cavity in a sliding mode, a round boss is fixedly arranged at the lower end of the lifting rod, eight guide sliding grooves are formed in the round boss in an annular array distribution mode, the guide sliding grooves are connected with the balls in a sliding mode, and a floating plate located in the water storage cavity is arranged on the lifting rod.
Preferably, the friction force of the vertical end of the sliding guide groove is greater than the elastic force inside the telescopic rod.
The flow guide device further comprises an adjuster which is fixed in the spherical faucet and is positioned at the lower end of the valve, and the upper end of the adjuster is in power connection with a push rod which is fixedly connected with the valve.
Preferably, the regulator is connected with a signal controller independently arranged outside the water cavity in a wireless signal mode, the signal controller is provided with a display screen, and buttons which are symmetrical left and right are arranged at the lower end of the display screen.
The invention has the beneficial effects that: the invention judges the type of fire by manpower, controls the flow path of water flow through signals, switches the mode of water spray fire extinguishing or dry powder fire extinguishing, realizes the fire extinguishing work corresponding to different fire sources, simultaneously adopts the different casting mode and the different initial height, and the different kinetic energy of the fire extinguishing bomb with the communicated weight, namely the different elastic potential energy of the spring converted by the action, so that the different casting positions can realize the omnibearing coverage type fire extinguishing work, improve the fire extinguishing efficiency of the fire extinguishing bomb, and avoid the larger property and security threats.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a fire extinguishing apparatus of the present invention, which can be used for different fire sources;
FIG. 2 is a schematic structural diagram of a control portion of the apparatus of FIG. 1;
FIG. 3 is a schematic view of the structure in the direction "A-A" of FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "B-B" of FIG. 1;
figure 5 is a schematic view of the projectile apparatus of figure 1 in operation.
Detailed Description
The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a fire extinguishing device aiming at different fire sources, which is mainly applied to the emergency treatment fire extinguishing process under the condition of different fire sources, and the invention is further explained by combining the attached drawings of the invention:
the fire extinguishing device aiming at different fire sources comprises a water tank 36, a water through cavity 37 with a downward opening is arranged in the water tank 36, eight sequencing barrels 26 are arrayed on the outer side end face of the water through cavity 37, a falling cavity 27 is arranged in the sequencing barrel 26, four fire extinguishing bombs 32 are connected in the falling cavity 27 in a sliding manner, a falling projection device 901 is arranged in the sequencing barrel 26, the projection device 901 comprises a projection port 20 which is arranged on the inner wall of the cavity 27 far away from the center side of the array, a projection arm 24 which is rotatably connected in the projection port 20 and can be abutted against the fire extinguishing bombs 32, and a torque spring 46 which is connected between the projection arm 24 and the projection port 20, the projection arm 24 is rotated by the elasticity of the torque spring 46 to project the fire extinguishing bombs 32 at the lowest end to the outer side for fire extinguishing, and the projection arm 24 is provided with an ejection device 902, the ejection device 902 comprises a limiting block 42 fixed on the ejection arm 24 and located in the falling cavity 27, a hook 23 rotatably connected in the limiting block 42, a resistance spring 22 connected to the lower end of the hook 23, and an ejection plate 21 connected to the lower end of the resistance spring 22, kinetic energy caused by downward movement of the fire extinguishing bomb 32 is converted into elastic potential energy of the resistance spring 22, and the elastic potential energy reacts with the fire extinguishing bomb 32 to launch the fire extinguishing bomb 32 to the outside for fire extinguishing, because kinetic energy is different after the fire extinguishing bomb 32 is lowered due to different initial heights, the higher the fire extinguishing bomb 32 is ejected farther after passing through the resistance spring 22, the fire is covered and extinguished in all directions, a water separating box 11 is arranged in the water passing cavity 37, a transmission cavity 12 is arranged in the water separating box 11, a limiting device 903 for locking the hook 23 is arranged in the transmission cavity 12, the limiting device 903 comprises a chute 19 arranged on the inner wall of the sequencing barrel 26 close to the center, The sliding hook 18 is connected in the sliding groove 19 in a sliding mode and can be abutted to the hook 23, the sliding hook 18 is abutted to the hook 23 to limit the movement of the sliding hook, the upper end of the transmission cavity 12 is provided with a water storage cavity 41, the outer end of the upper side of the water storage cavity 41 is provided with a flow guide device 904, the flow guide device 904 comprises a spherical faucet 38 arranged on the inner wall of the upper end of the water storage cavity 41, a water inlet 31 arranged on the upper side of the spherical faucet 38 in a penetrating mode and a valve 30 connected in the spherical faucet 38 in a sliding mode, the diameter of the valve 30 is smaller than that of the spherical faucet 38, and the position of the valve 30 is changed to enable the water to flow.
Beneficially, the inner wall of the top end of the water passing cavity 37 is communicated with the outside to form a water pipe 35, the diameter of the water pipe 35 is smaller than that of the water inlet 31, water can fall into the water inlet 31 completely, the outer side of the upper end of the water passing cavity 37 is fixedly provided with a connecting plate 34, the connecting plate 34 and a bolt are fixed on the wall surface, the inner wall of the rear end of the water storage cavity 41 is communicated with the outside to form a water drainage pipe 39, a spherical valve 44 is connected in the water drainage pipe 39 in a rotating mode, and the water amount of the water storage cavity 41 is controlled.
Advantageously, the stopper 42 is an L-shaped slot block structure, which ensures that the hook 23 is in a horizontally unfolded state in the storage state.
According to an embodiment, the following detailed description is given to the projecting device 901, the projecting device 901 further includes a sealing plate 25 rotatably connected in the emitting port 20 and located at the upper end of the projecting arm 24, a return spring 45 is connected between the sealing plate 25 and the emitting port 20, the elastic force of the return spring 45 is smaller than that of the torque spring 46, it is ensured that the projecting arm 24 can stir the sealing plate 25 to project the fire extinguishing bomb 32 at the lowest end, and the upper end of the falling cavity 27 is rotatably connected with a cover plate 33 capable of sealing the falling cavity 27.
According to an embodiment, the restricting device 903 is described in detail below, the restricting device 903 further includes an expansion link 43 disposed at the lower end of the slide hook 18 and slidably connected to the slide slot 19, the sliding hook 18 is provided with a ball 16 positioned in the transmission cavity 12, a compression spring 17 is connected between the ball 16 and the inner wall of the transmission cavity 12, the inner wall of the top end of the transmission cavity 12 is connected with a lifting rod 14 extending into the water storage cavity 41 in a sliding way, a round boss 15 is fixedly arranged at the lower end of the lifting rod 14, eight guide sliding chutes 13 are distributed in the round boss 15 in an annular array manner, the slide chute 13 is connected with the ball 16 in a sliding way, the lifting rod 14 is provided with a floating plate 40 positioned in the water storage cavity 41, the compression spring 17 is released from being pressed by the slide guide groove 13, so that the slide hook 18 can move with the elastic recovery of the compression spring 17.
Advantageously, the friction force of the vertical end of the guide chute 13 is greater than the elastic force inside the telescopic rod 43, ensuring that the sliding hook 18 moves downwards and then moves laterally after the sliding vertical end of the guide chute 13 is partially disengaged from the ball 16.
According to an embodiment, the deflector 904 is described in detail below, the deflector 904 further includes an adjuster 28 fixed in the ball cock 38 and located at a lower end of the valve 30, and a push rod 29 fixedly connected to the valve 30 is dynamically connected to an upper end of the adjuster 28.
Beneficially, the regulator 28 is connected with a signal controller 49 which is independently arranged outside the water through cavity 37 in a wireless signal mode, a display screen 48 is arranged on the signal controller 49, a button 47 which is symmetrical left and right is arranged at the lower end of the display screen 48, and the button 47 is used for controlling the starting of the regulator 28.
The following detailed description of the usage steps of a fire extinguishing apparatus for different fire sources in this document is provided with reference to fig. 1 to 5:
when the device is installed, the device is fixed on the wall surface through the connecting plate 34, and the water pipe 35 is communicated with an external water pipe;
when no fire occurs, the cover plate 33 is manually rotated, four fire extinguishing bombs 32 are filled in each falling cavity 27, then the falling cavity is closed, at the moment, the projecting arm 24 is vertically placed to enable the torque spring 46 to accumulate elastic potential energy and abut against the fire extinguishing bomb 32 at the lowest end, meanwhile, the hook 23 is horizontally placed to abut against the sliding hook 18 to limit the rotation of the projecting arm 24, half of water is filled in the water storage cavity 41 to enable the floating plate 40 to float upwards, the round boss 15 is suspended through the lifting rod 14, and at the moment, the vertical end part of the sliding guide groove 13 abuts against the ball 16;
when the fire source is burnt in a solid state, the left button 47 is manually pressed, the regulator 28 is controlled to be started through a signal, the regulator 28 pushes the valve 30 to be abutted against the spherical faucet 38 through the push rod 29, at the moment, water in the external water pipe flows into the water inlet 31 through the water pipe 35, and the water flows out from the opening at the lower end of the water through cavity 37 because the water inlet 31 is sealed by the valve 30, so that the fire extinguishing work is carried out;
when the flammable liquid or the electric combustion is carried out, the right button 47 is manually pressed, the regulator 28 is started through the signal control, the regulator 28 pushes the valve 30 to be separated from the abutting joint with the spherical tap 38 through the push rod 29, at the moment, the water in the external water pipe flows into the water storage cavity 41 through the water pipe 35, the water inlet 31 and the spherical tap 38, the water level rises to push the floating plate 40 to move upwards, the floating plate 40 drives the circular boss 15 to move upwards through the lifting rod 14, when the vertical end part of the guide chute 13 is separated from the abutting joint with the ball 16, the sliding hook 18 returns downwards and moves downwards under the elastic force inside the telescopic rod 43, at the moment, the locking of the projection arm 24 is released, the projection arm 24 returns to communicate with the fire extinguishing bomb 32 at the lowest end through the elastic force of the torque spring 46 to stir the sealing plate 25, the elastic potential energy of the sealing plate 25 is projected to the farthest end towards the fire extinguishing bomb 32 at the lowest end, the resistance spring 22 is pressed, and the fire extinguishing bomb 32 is ejected to different positions by the elasticity of the resistance spring 22, so that the omnibearing covering type fire extinguishing is carried out.
The invention has the beneficial effects that: the invention judges the type of fire by manpower, controls the flow path of water flow through signals, switches the mode of water spray fire extinguishing or dry powder fire extinguishing, realizes the fire extinguishing work corresponding to different fire sources, simultaneously adopts the different casting mode and the different initial height, and the different kinetic energy of the fire extinguishing bomb with the communicated weight, namely the different elastic potential energy of the spring converted by the action, so that the different casting positions can realize the omnibearing coverage type fire extinguishing work, improve the fire extinguishing efficiency of the fire extinguishing bomb, and avoid the larger property and security threats.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (8)
1. The utility model provides a can be to extinguishing device of different sources of fire, includes the water tank, its characterized in that: the fire extinguishing device is characterized in that a water through cavity with a downward opening is arranged in the water tank, eight sequencing barrels are distributed on the end face of the outer side of the water through cavity in an array mode, a falling cavity is arranged in each sequencing barrel, four fire extinguishing bombs are connected in the falling cavity in a sliding mode, a projecting device is arranged in each sequencing barrel, the projecting device comprises a projecting port which is arranged on the inner wall of the falling cavity far away from the center side of the array, a projecting arm which is rotatably connected in the projecting port and can be abutted against the fire extinguishing bombs, a torque spring which is connected between the projecting arm and the projecting port, the projecting arm is rotated by the aid of elasticity of the torque spring to project the fire extinguishing bomb at the lowest end to the outside for fire extinguishing, the projecting device comprises a limiting block which is fixed on the projecting arm and is located in the falling cavity, a hook which is, The ejection plate is connected to the lower end of the resistance spring, kinetic energy caused by downward movement of the fire extinguishing bomb is converted into elastic potential energy of the resistance spring and reacts on the fire extinguishing bomb to emit the fire extinguishing bomb to the outside for fire extinguishing, a water isolating tank is arranged in the water isolating tank, a transmission cavity is arranged in the water isolating tank, a limiting device for locking the hook is arranged in the transmission cavity, the limiting device comprises a chute arranged on the inner wall of the sequencing barrel close to the center side of the array and a sliding hook which is connected in the chute in a sliding manner and can be abutted against the hook, the sliding hook is abutted against the hook to limit the movement of the sliding hook, a water storage cavity is arranged at the upper end of the transmission cavity, a flow guide device is arranged at the outer end of the upper side of the water storage cavity and comprises a spherical faucet arranged on the inner wall of the upper end of the water storage cavity, a, the diameter of the valve is smaller than that of the ball-shaped faucet, and the water flowing direction is different by changing the position of the valve, so that different fire extinguishing modes are changed.
2. A fire extinguishing apparatus as defined in claim 1, which is adapted to be used with different fire sources, characterized in that: the water storage cavity is characterized in that a water pipe is arranged on the inner wall of the top end of the water passing cavity in a communication mode with the outside, the diameter of the water pipe is smaller than that of the water inlet, a connecting plate is fixedly arranged on the outer side of the upper end of the water passing cavity, a water drainage pipe is arranged on the inner wall of the rear end of the water storage cavity in a communication mode with the outside, and a ball valve.
3. A fire extinguishing apparatus as defined in claim 1, which is adapted to be used with different fire sources, characterized in that: the limiting block is of an L-shaped groove block structure.
4. A fire extinguishing apparatus as defined in claim 1, which is adapted to be used with different fire sources, characterized in that: the projecting device further comprises a sealing plate which is rotatably connected in the emitting port and is positioned at the upper end of the projecting arm, a return spring is connected between the sealing plate and the emitting port, and the elasticity of the return spring is smaller than that of the torque spring.
5. A fire extinguishing apparatus as defined in claim 1, which is adapted to be used with different fire sources, characterized in that: the limiting device further comprises a telescopic rod arranged at the lower end of the sliding hook and connected with the sliding groove in a sliding mode, the sliding hook is provided with balls located in the transmission cavity, compression springs are connected between the balls and the inner wall of the transmission cavity, the inner wall of the top end of the transmission cavity is connected with a lifting rod extending to the water storage cavity in a sliding mode, a round boss is fixedly arranged at the lower end of the lifting rod, eight guide sliding grooves are distributed in the round boss in an annular array mode, the guide sliding grooves are connected with the balls in a sliding mode, and a floating plate located in the water storage cavity is arranged on the lifting rod.
6. A fire extinguishing apparatus as defined in claim 5, which is adapted to be used with different fire sources, characterized in that: and the friction force of the vertical end of the guide chute is greater than the elastic force in the telescopic rod.
7. A fire extinguishing apparatus as defined in claim 1, which is adapted to be used with different fire sources, characterized in that: the flow guide device also comprises an adjuster which is fixed in the spherical tap and is positioned at the lower end of the valve, and the upper end of the adjuster is in power connection with a push rod which is fixedly connected with the valve.
8. A fire extinguishing apparatus as defined in claim 7, which is adapted to be used for different fire sources, characterized in that: the wireless signal connection has the independent setting on the regulator leads to the signal controller in the water cavity outside, be equipped with the display screen on the signal controller, the display screen lower extreme is equipped with bilateral symmetry's button.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911077512.7A CN110711334B (en) | 2019-11-06 | 2019-11-06 | Fire extinguishing device capable of aiming at different fire sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077512.7A CN110711334B (en) | 2019-11-06 | 2019-11-06 | Fire extinguishing device capable of aiming at different fire sources |
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| CN110711334A CN110711334A (en) | 2020-01-21 |
| CN110711334B true CN110711334B (en) | 2020-11-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111265803B (en) * | 2020-03-27 | 2021-05-14 | 台州市黄岩奇逞模塑有限公司 | Road emergency rescue equipment with automatic fire extinguishing function |
| CN111870848B (en) * | 2020-07-31 | 2021-07-06 | 江西中科冠物联网科技有限公司 | Intelligent fire-fighting inspection fire extinguishing system for factory |
| CN112076423B (en) * | 2020-09-15 | 2021-05-14 | 天津智尧网络通信技术有限公司 | Fire-fighting article conveyer for data communication based on thing networking |
| CN112386840A (en) * | 2020-11-20 | 2021-02-23 | 广东嘉腾机器人自动化有限公司 | Fire-fighting robot system, method and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013204864A (en) * | 2012-03-27 | 2013-10-07 | Japan Aerospace Exploration Agency | Functional bullet shooting device and functional bullet shooting system |
| KR101243081B1 (en) * | 2013-01-11 | 2013-03-25 | 주식회사 창성에이스산업 | System for fire-extinguishing bomb launching |
| CN207472129U (en) * | 2017-11-21 | 2018-06-08 | 昆明星众科技孵化器有限公司 | A kind of fire extinguishing ball loading device |
| CN108837352B (en) * | 2018-07-09 | 2020-10-20 | 淮北市腾威机械设备有限公司 | Intelligent fire fighting equipment |
| CN109011274B (en) * | 2018-07-15 | 2020-07-03 | 诸暨市尚瑞机械配件经营部 | Fire-fighting water ball throwing machine |
| CN109059646A (en) * | 2018-08-29 | 2018-12-21 | 何建龙 | A kind of intelligent fire fighting ball emitter |
| CN110271667A (en) * | 2019-06-20 | 2019-09-24 | 郭瑾 | A kind of unmanned plane for forest fire protection and fire-fighting and rescue |
| CN110314307B (en) * | 2019-06-25 | 2021-04-02 | 福建工程学院 | Intelligent self-propelled fire extinguishing ball throwing system and method |
| CN110279957B (en) * | 2019-07-09 | 2020-12-11 | 江苏润翔软件技术有限公司 | High-rise fire extinguishing equipment based on unmanned aerial vehicle |
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Effective date of registration: 20201112 Address after: Nanping Nan'an District of Chongqing City Road 400060 No. 168 Applicant after: CHONGQING JIAN'AN INSTRUMENT Co.,Ltd. Address before: No.51 Zhen'an Road, Xizhou Town, Xiangshan County, Ningbo City, Zhejiang Province 315700 Applicant before: Xiangshan fenfan Fire Technology Co.,Ltd. |
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