CN114849118A - Suspension type superfine dry powder extinguishing device with wireless pressure feedback - Google Patents
Suspension type superfine dry powder extinguishing device with wireless pressure feedback Download PDFInfo
- Publication number
- CN114849118A CN114849118A CN202210593084.9A CN202210593084A CN114849118A CN 114849118 A CN114849118 A CN 114849118A CN 202210593084 A CN202210593084 A CN 202210593084A CN 114849118 A CN114849118 A CN 114849118A
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- dry powder
- fixed
- wireless pressure
- fire extinguishing
- extinguishing device
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a suspension type superfine dry powder extinguishing device with wireless pressure feedback, which comprises a wall plate, a fixed cylinder, a discharge cylinder and a motor box, wherein a dry powder box is arranged in the fixed cylinder, extinguishing dry powder is stored in the dry powder box, a wireless pressure sensor is fixedly arranged on the side wall of the front end of the dry powder box, the wireless pressure sensor and the dry powder box are correspondingly arranged, a limiting component is arranged between the fixed cylinder and the dry powder box, a communicating pipe is communicated between the fixed cylinder and the discharge cylinder, a pressure pump is fixedly arranged on the side wall of the communicating pipe, an opening is formed in the front side wall of the discharge cylinder, and a fixed cavity is fixedly arranged on the upper wall of the opening; the invention relates to the technical field of fire fighting; this take superfine dry powder extinguishing device of wireless pressure feedback suspension type compares in traditional spraying formula automatic fire extinguishing device, and the device is when putting out a fire, and the dry powder of putting out a fire is the covering surface formula and puts out a fire to the burning things which may cause a fire disaster, and fire extinguishing effect is more good, and fire extinguishing efficiency is higher.
Description
Technical Field
The invention relates to the technical field, in particular to a suspension type superfine dry powder extinguishing device with wireless pressure feedback.
Background
With the progress of society, wireless devices are more and more widely used in people's lives and widely applied to a plurality of fields such as fire fighting, greening and engineering. The ultrafine dry powder is a particularly fine powder having an average particle size of about 10 μm. The powder has an indefinite chemical formula and other characteristics, and can be used as powder product image words in various industries. Such as: the dry powder extinguishing agent contains superfine dry powder extinguishing agent.
The existing superfine dry powder fire extinguishing device is simple in structure and single in function, when fire is extinguished, the fire can be extinguished by covering one area towards one direction, the fire extinguishing range is small, the fire extinguishing efficiency is low, and meanwhile, a plurality of fire extinguishing devices are required to be arranged for ensuring the coverage of the fire extinguishing area, and the economic cost is high.
Therefore, the invention provides a suspension type superfine dry powder extinguishing device with wireless pressure feedback, which aims to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a suspension type superfine dry powder extinguishing device with wireless pressure feedback, which solves the problems.
In order to achieve the purpose, the invention is realized by the following technical scheme: a suspension type superfine dry powder extinguishing device with wireless pressure feedback comprises a wall plate, a fixed cylinder, a discharge cylinder and a motor box, wherein a dry powder box is arranged in the fixed cylinder, dry powder for extinguishing fire is stored in the dry powder box, a wireless pressure sensor is fixedly arranged on the side wall of the front end of the dry powder box, the wireless pressure sensor and the dry powder box are correspondingly arranged, a limiting component is arranged between the fixed cylinder and the dry powder box, a communicating pipe is communicated between the fixed cylinder and the discharge cylinder, a pressure pump is fixedly arranged on the side wall of the communicating pipe, an opening is formed in the front side wall of the discharge cylinder, a fixed cavity is fixedly arranged on the upper wall of the opening, a sliding plate is slidably arranged in the fixed cavity, a movable plate is fixedly arranged at the lower end of the sliding plate, a supporting plate is fixedly arranged at the lower end of the sliding plate, a powder outlet movable plate is formed in the movable plate, and a motor is fixedly arranged in the motor box, the motor is connected with a rotating shaft, a reciprocating lead screw is fixedly arranged at the upper end of the rotating shaft, a moving block is arranged on the side wall of the reciprocating lead screw in a matched mode, and the moving block is fixedly connected with the abutting plate.
The invention further defines the technical scheme that:
preferably, fixed connection in vertical direction between a fixed section of thick bamboo, a section of thick bamboo and the motor case of discharging, and a fixed section of thick bamboo, a section of thick bamboo and motor case all inlay and establish and set up in the lateral wall of wallboard, a fixed section of thick bamboo, a section of thick bamboo and motor case all set up to the cylinder.
Preferably, the side wall of the upper end of the dry powder box is fixedly provided with a pulling block, and the pulling block is annularly arranged.
Preferably, spacing subassembly is including setting up the spout in the solid fixed cylinder lateral wall, it is equipped with slip magnet to slide in the spout, fixed connection is equipped with between slip magnet and the dry powder case, the below laminating of slip magnet is equipped with regulation magnet, fixed connection is equipped with the connecting rod between slip magnet and the dry powder case.
Preferably, the fixed dead lever that is equipped with on the lateral wall of adjusting magnet, the lateral wall setting of the fixed section of thick bamboo that runs through of dead lever, the end of dead lever is fixed and is equipped with the joint piece, the joint piece is the setting of hexagon body.
Preferably, the movable plate penetrates through the fixed cavity, the powder outlet is formed in the side wall of the lower end of the movable plate, the movable plate is fixed to the side edge of the abutting plate, and the powder outlet is formed in the upper wall of the abutting plate.
Preferably, the reciprocating screw rod is rotatably arranged in the discharge cylinder, and the rotating shaft penetrates through the discharge cylinder and is fixed with the reciprocating screw rod.
Preferably, the moving block and the abutting plate are connected in an integrated manner, and the moving block is fixedly arranged at the center of the abutting plate.
Advantageous effects
The invention provides a suspension type superfine dry powder extinguishing device with wireless pressure feedback. Compared with the prior art, the method has the following beneficial effects:
(1) this take superfine dry powder extinguishing device of wireless pressure feedback suspension type, through the motor, reciprocal lead screw and support mutually supporting of board isotructure, make the force pump with the dry powder high-speed pump of will putting out a fire to support board department, make the dry powder of putting out a fire to follow powder outlet department through supporting the board and spill out, compare in traditional spraying formula automatic fire extinguishing device, the device is when putting out a fire, the dry powder of putting out a fire is the face of coverage formula and puts out a fire to the burning things which may cause a fire disaster, fire extinguishing effect is more good, fire extinguishing efficiency is higher, motor operation drives reciprocal lead screw rotation simultaneously, thereby make the movable block with support the board round trip movement in vertical direction, it slides at fixed intracavity to drive the sliding plate, the fire extinguishing area of dry powder of putting out a fire has further been increased, effectively avoid the existence at regional interior dead angle of putting out a fire, fire extinguishing efficiency and fire extinguishing quality have been guaranteed.
(2) This take superfine dry powder extinguishing device of wireless pressure feedback suspension type, setting through spacing subassembly, make when the dry powder case is being changed, with hexagonal spanner and the mutual joint of joint piece, rotate the spanner, make the joint piece drive adjusting magnet and rotate, make one side magnetism that adjusting magnet and slip magnet are close to each other repel, thereby jack-up the dry powder case, the staff of being convenient for takes out the dry powder case, later will rotate adjusting magnet once more, put into the dry powder case that is equipped with the dry powder of putting out a fire, make slip magnet and adjusting magnet adsorb each other, accomplish the change process of dry powder case, process convenient and fast, need not loaded down with trivial details bolt fastening and dismantlement, the daily maintenance of being convenient for, the security of fire extinguishing apparatus has been guaranteed.
Drawings
FIG. 1 is a schematic front structural view of a suspension type superfine dry powder fire extinguishing apparatus with wireless pressure feedback according to the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of a three-dimensional structure of a fixed cavity in a suspension type superfine dry powder fire extinguishing apparatus with wireless pressure feedback according to the present invention;
in the figure 1, wall panels; 2. a fixed cylinder; 3. a discharge drum; 4. a motor case; 5. a dry powder box; 6. fire extinguishing dry powder; 7. pulling the block; 8. a wireless pressure sensor; 9. a rotating shaft; 10. a communicating pipe; 11. an opening; 12. a pressure pump; 13. a fixed cavity; 14. a sliding plate; 15. moving the plate; 16. a resisting plate; 17. a powder outlet; 18. a motor; 19. a reciprocating screw; 20. a moving block; 21. a chute; 22. a sliding magnet; 23. a connecting rod; 24. adjusting the magnet; 25. fixing the rod; 26. and a clamping block.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-3, a suspension type superfine dry powder fire extinguishing device with wireless pressure feedback comprises a wall plate 1, a fixed cylinder 2, a discharge cylinder 3 and a motor case 4, wherein the fixed cylinder 2, the discharge cylinder 3 and the motor case 4 are fixedly connected in the vertical direction, the fixed cylinder 2, the discharge cylinder 3 and the motor case 4 are all embedded in the side wall of the wall plate 1, the fixed cylinder 2, the discharge cylinder 3 and the motor case 4 are all arranged as cylinders, the occupied space area of the device is reduced, the device body can be protected while fire is extinguished, a dry powder case 5 is arranged in the fixed cylinder 2, dry powder 6 for fire extinguishing is stored in the dry powder case 5, a pull block 7 is fixedly arranged on the side wall of the upper end of the dry powder case 5, the pull block 7 is arranged in a ring shape, a worker can conveniently pull the dry powder case 5 to take out the dry powder case 5 for replacement, a wireless pressure sensor 8 is fixedly arranged on the side wall of the front end of the dry powder case 5, the wireless pressure sensor 8 is arranged correspondingly in the dry powder box 5, a limit component is arranged between the fixed cylinder 2 and the dry powder box 5, a communicating pipe 10 is communicated between the fixed cylinder 2 and the discharge cylinder 3, a pressure pump 12 is fixedly arranged at the side wall of the communicating pipe 10, an opening 11 is arranged at the front side wall of the discharge cylinder 3, a fixed cavity 13 is fixedly arranged at the upper wall of the opening 11, a sliding plate 14 is arranged in the fixed cavity 13 in a sliding manner, a moving plate 15 is fixedly arranged at the lower end of the sliding plate 14, a resisting plate 16 is fixedly arranged at the lower end of the moving plate 15, a powder outlet 17 is arranged on the moving plate 15, the moving plate 15 penetrates through the fixed cavity 13, the powder outlet 17 is arranged at the side wall of the lower end of the moving plate 15, the moving plate 15 is fixed at the side edge of the resisting plate 16, and the powder outlet 17 is arranged at the upper wall of the resisting plate 16, so that the fire extinguishing dry powder 6 discharged from the communicating pipe 10 can be discharged from the powder outlet 17 through the impact of the resisting plate 16, the motor 18 is fixedly arranged in the motor box 4, the rotating shaft 9 is connected to the motor 18, the reciprocating lead screw 19 is fixedly arranged at the upper end of the rotating shaft 9, the reciprocating lead screw 19 is rotatably arranged in the discharging barrel 3, the rotating shaft 9 penetrates through the discharging barrel 3 and is fixed with the reciprocating lead screw 19, the side wall of the reciprocating lead screw 19 is provided with the moving block 20 in a matching manner, the moving block 20 is fixedly connected with the abutting plate 16, the moving block 20 is connected with the abutting plate 16 in an integrated forming manner, the moving block 20 is fixedly arranged at the circle center of the abutting plate 16, the stability between the device structures is ensured, the separation between the structures is prevented, through the mutual matching of the structures of the motor 18, the reciprocating lead screw 19 and the abutting plate 16, the pressure pump 12 pumps the fire extinguishing dry powder 6 to the abutting plate 16 at a high speed, the fire extinguishing dry powder 6 is scattered from the powder outlet 17 through the abutting plate 16, compared with the traditional spraying type automatic fire extinguishing device, when fire extinguishing, the dry powder 6 of putting out a fire is the face of coverage formula and puts out a fire to the burning things which may cause a fire disaster, and fire extinguishing effect is more excellent, and fire extinguishing efficiency is higher, and motor 18 operation drives reciprocal lead screw 19 to rotate simultaneously to make movable block 20 and support board 16 round trip movement in vertical direction, drive sliding plate 14 and slide in fixed chamber 13, further increased the area of putting out a fire of dry powder 6 of putting out a fire, effectively avoid the existence at the regional dead angle of putting out a fire, guaranteed fire extinguishing efficiency and fire extinguishing quality.
Example two:
referring to fig. 1 to 3, the present embodiment provides a technical solution based on the first embodiment: the limiting component comprises a sliding groove 21 arranged in the side wall of the fixed cylinder 2, a sliding magnet 22 is arranged in the sliding groove 21 in a sliding manner, a fixed connection is arranged between the sliding magnet 22 and the dry powder box 5, an adjusting magnet 24 is arranged below the sliding magnet 22 in a laminating manner, a connecting rod 23 is arranged between the sliding magnet 22 and the dry powder box 5 in a fixed connection manner, a fixing rod 25 is fixedly arranged on the side wall of the adjusting magnet 24, the fixing rod 25 penetrates through the side wall of the fixed cylinder 2, a clamping block 26 is fixedly arranged at the tail end of the fixing rod 25, the clamping block 26 is arranged in a hexagonal body manner, through the arrangement of the limiting component, when the dry powder box 5 needs to be replaced, a hexagonal wrench and the clamping block 26 are clamped with each other, the wrench is rotated, the clamping block 26 drives the adjusting magnet 24 to rotate, one surface, which is close to the adjusting magnet 24 and the sliding magnet 22, is magnetically repelled, the dry powder box 5 is jacked up, and a worker can take out the dry powder box 5 conveniently, later will rotate adjusting magnet 24 once more, put into the dry powder case 5 that is equipped with the dry powder 6 of putting out a fire for slip magnet 22 and adjusting magnet 24 adsorb each other, accomplish the change process of dry powder case 5, and process convenient and fast need not loaded down with trivial details bolt fastening and dismantlement, and the daily maintenance of being convenient for has guaranteed fire extinguishing apparatus's security.
And those not described in detail in this specification are well within the skill of those in the art.
When the dry powder box replacing device works, firstly, the hexagonal wrench and the clamping block 26 are clamped with each other, the wrench is rotated to enable the clamping block 26 to drive the adjusting magnet 24 to rotate, one surfaces of the adjusting magnet 24 and the sliding magnet 22, which are close to each other, are magnetically repelled, so that the dry powder box 5 is jacked up, a worker can conveniently take out the dry powder box 5, then the adjusting magnet 24 is rotated again to be placed into the dry powder box 5 filled with the fire extinguishing dry powder 6, the sliding magnet 22 and the adjusting magnet 24 are mutually attracted, the replacing process of the dry powder box 5 is completed, when the dry powder box replacing device works, the pressure pump 12 and the motor 18 are turned on, the pressure pump 12 pumps the fire extinguishing dry powder 6 in the dry powder box 5 into the discharge cylinder 3 at high pressure to impact the abutting plate 16 and discharge the fire extinguishing dry powder from the powder outlet 17, meanwhile, the motor 18 operates to drive the reciprocating screw rod 19 to rotate, so that the moving block 20 and the abutting plate 16 move back and forth in the vertical direction to drive the sliding plate 14 to slide in the fixed cavity 13, make the dry powder 6 of putting out a fire can put out a fire at wider range through supporting board 16, wireless pressure sensor 8 can carry out real-time supervision to the atmospheric pressure in the dry powder case 5 simultaneously, makes things convenient for the staff in time to change dry powder case 5.
It should be noted that, in this document, 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. Also, 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a take superfine dry powder extinguishing device of wireless pressure feedback suspension type, includes wallboard (1), solid fixed cylinder (2), discharges a section of thick bamboo (3) and motor case (4), its characterized in that: a dry powder box (5) is arranged in the fixed cylinder (2), fire extinguishing dry powder (6) is stored in the dry powder box (5), a wireless pressure sensor (8) is fixedly arranged at the side wall of the front end of the dry powder box (5), the wireless pressure sensor (8) and the dry powder box (5) are correspondingly arranged, a limiting component is arranged between the fixed cylinder (2) and the dry powder box (5), a communicating pipe (10) is communicated between the fixed cylinder (2) and the discharge cylinder (3), a pressure pump (12) is fixedly arranged at the side wall of the communicating pipe (10), an opening (11) is formed in the front side wall of the discharge cylinder (3), a fixed cavity (13) is fixedly arranged at the upper wall of the opening (11), a sliding plate (14) is arranged in the fixed cavity (13) in a sliding manner, a movable plate (15) is fixedly arranged at the lower end of the sliding plate (14), a support plate (16) is fixedly arranged at the lower end of the movable plate (15), the powder outlet (17) is formed in the moving plate (15), the motor (18) is fixedly arranged in the motor box (4), the rotating shaft (9) is connected onto the motor (18), the reciprocating lead screw (19) is fixedly arranged at the upper end of the rotating shaft (9), the moving block (20) is arranged on the side wall of the reciprocating lead screw (19) in a matched mode, and the moving block (20) is fixedly connected with the abutting plate (16).
2. The wireless pressure feedback suspension type superfine dry powder fire extinguishing device according to claim 1, wherein: fixed connection in vertical direction between solid fixed cylinder (2), a discharge tube (3) and motor case (4), and solid fixed cylinder (2), discharge tube (3) and motor case (4) all inlay and establish and set up in the lateral wall of wallboard (1), gu fixed cylinder (2), discharge tube (3) and motor case (4) all set up to the cylinder.
3. The wireless pressure feedback suspension type superfine dry powder fire extinguishing device according to claim 1, wherein: the upper end side wall of the dry powder box (5) is fixedly provided with a pull block (7), and the pull block (7) is annularly arranged.
4. The wireless pressure feedback suspension type superfine dry powder fire extinguishing device according to claim 1, wherein: spacing subassembly is including setting up spout (21) in fixed cylinder (2) lateral wall, it is equipped with slip magnet (22) to slide in spout (21), fixed connection is equipped with between slip magnet (22) and dry powder case (5), the below laminating of slip magnet (22) is equipped with adjusting magnet (24), fixed connection is equipped with connecting rod (23) between slip magnet (22) and dry powder case (5).
5. The wireless pressure feedback suspended superfine dry powder fire extinguishing device according to claim 4, wherein: fixed dead lever (25) of being equipped with on the lateral wall of adjusting magnet (24), the lateral wall setting of the fixed section of thick bamboo (2) of running through of dead lever (25), the end of dead lever (25) is fixed and is equipped with joint piece (26), joint piece (26) are the setting of hexagon body.
6. The wireless pressure feedback suspension type superfine dry powder fire extinguishing device according to claim 1, wherein: the movable plate (15) penetrates through the fixed cavity (13), the powder outlet (17) is formed in the side wall of the lower end of the movable plate (15), the movable plate (15) is fixed to the side edge of the abutting plate (16), and the powder outlet (17) is formed in the upper wall of the abutting plate (16).
7. The wireless pressure feedback suspension type superfine dry powder fire extinguishing device according to claim 1, wherein: the reciprocating screw rod (19) is rotationally arranged in the discharge cylinder (3), and the rotating shaft (9) penetrates through the discharge cylinder (3) and is fixed with the reciprocating screw rod (19).
8. The wireless pressure feedback suspension type superfine dry powder fire extinguishing device according to claim 1, wherein: the moving block (20) and the resisting plate (16) are connected in an integrated forming mode, and the moving block (20) is fixedly arranged at the circle center of the resisting plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593084.9A CN114849118B (en) | 2022-05-27 | 2022-05-27 | Suspension type superfine dry powder extinguishing device with wireless pressure feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593084.9A CN114849118B (en) | 2022-05-27 | 2022-05-27 | Suspension type superfine dry powder extinguishing device with wireless pressure feedback |
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| Publication Number | Publication Date |
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| CN114849118A true CN114849118A (en) | 2022-08-05 |
| CN114849118B CN114849118B (en) | 2023-02-28 |
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| CN202210593084.9A Active CN114849118B (en) | 2022-05-27 | 2022-05-27 | Suspension type superfine dry powder extinguishing device with wireless pressure feedback |
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| CN212998071U (en) * | 2020-07-26 | 2021-04-20 | 江山市龙江消防材料有限公司 | Big data center is dry powder extinguishing device for computer lab |
| CN112736702A (en) * | 2021-01-18 | 2021-04-30 | 沈正伟 | Intelligent fireproof power distribution cabinet |
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| CN214912864U (en) * | 2021-04-29 | 2021-11-30 | 江苏迈克尔电子科技有限公司 | Electromechanical component safety fire control unit |
| CN215309894U (en) * | 2021-05-17 | 2021-12-28 | 福建防护家科技有限公司 | Suspension type superfine dry powder extinguishing device with wireless pressure feedback |
| CN114344776A (en) * | 2022-01-06 | 2022-04-15 | 浙江华神消防科技有限公司 | Novel fire extinguishing device and preparation method |
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2022
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| JP2011050414A (en) * | 2009-08-31 | 2011-03-17 | Nohmi Bosai Ltd | Fire extinguishing device |
| CN209048941U (en) * | 2018-07-26 | 2019-07-02 | 江西速克消防科技有限公司 | A kind of automobile engine nacelle ultrafine dry powder extinguishing installation |
| CN209075923U (en) * | 2018-10-24 | 2019-07-09 | 高强电气科技发展有限公司 | A kind of fire hydrant cabinet with dry-chemical fire extinguishing function |
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| CN112736702A (en) * | 2021-01-18 | 2021-04-30 | 沈正伟 | Intelligent fireproof power distribution cabinet |
| CN112843542A (en) * | 2021-01-21 | 2021-05-28 | 上海海事大学 | Multifunctional electric power and electric automation control system |
| CN214912864U (en) * | 2021-04-29 | 2021-11-30 | 江苏迈克尔电子科技有限公司 | Electromechanical component safety fire control unit |
| CN215309894U (en) * | 2021-05-17 | 2021-12-28 | 福建防护家科技有限公司 | Suspension type superfine dry powder extinguishing device with wireless pressure feedback |
| CN114344776A (en) * | 2022-01-06 | 2022-04-15 | 浙江华神消防科技有限公司 | Novel fire extinguishing device and preparation method |
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| Publication number | Publication date |
|---|---|
| CN114849118B (en) | 2023-02-28 |
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