CN110613907A - Hexafluoropropane fire extinguisher and injection device thereof - Google Patents
Hexafluoropropane fire extinguisher and injection device thereof Download PDFInfo
- Publication number
- CN110613907A CN110613907A CN201910917784.7A CN201910917784A CN110613907A CN 110613907 A CN110613907 A CN 110613907A CN 201910917784 A CN201910917784 A CN 201910917784A CN 110613907 A CN110613907 A CN 110613907A
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- pipe
- hexafluoropropane
- fire extinguisher
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- shower nozzle
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/76—Details or accessories
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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 hexafluoropropane fire extinguisher and an injection device thereof, belongs to the field of fire extinguishers, and aims to provide the injection device of the hexafluoropropane fire extinguisher, which has the technical scheme that: the fire extinguisher comprises a spray head and a connecting pipe used for connecting the spray head and a fire extinguisher bottle body, wherein one end of the spray head is connected with a round pipe, one end of the spray head, which is far away from the round pipe, is provided with a central spray hole communicated with a cavity in the spray head, the periphery of the central spray hole is provided with a plurality of scattered spray holes communicated with the cavity in the spray head, one end of the connecting pipe is connected to the fire extinguisher bottle body, and the; the invention has the advantages that: the spraying range of the hexafluoropropane fire extinguishing agent is enlarged, and the atomization characteristic of the fire extinguishing agent is fully exerted, so that the fire extinguishing effect of the hexafluoropropane fire extinguisher is greatly improved.
Description
Technical Field
The invention relates to the field of fire extinguishers, in particular to a hexafluoropropane fire extinguisher and an injection device thereof.
Background
The fire extinguisher is a portable fire extinguishing tool. Chemical substances are placed in the fire extinguisher to extinguish fire. The fire extinguisher is one of common fire extinguishing facilities, is stored in public places or places where fires may happen, and different types of fire extinguishers are filled with different components and are specially designed for different fires. Care must be taken in use to avoid adverse effects and risks.
The patent of Chinese patent publication No. CN103357131A discloses a compound portable fire extinguisher, which comprises a fire extinguishing agent storage tank, a fire extinguishing agent storage tank and a fire extinguishing agent storage tank, wherein a tank opening of the fire extinguishing agent storage tank is connected with a head assembly in a sealing way; the fire extinguishing agent suction pipe system is arranged in an inverted Y-shaped structure, a mixing cavity is arranged at the upper part, the bottom of the mixing cavity is respectively connected with a first fire extinguishing agent suction pipe and a second fire extinguishing agent suction pipe in a parallel mode, the top port of the mixing cavity is connected with a fire extinguishing agent inlet connecting pipe on a machine head assembly, and the first fire extinguishing agent suction pipe and the second fire extinguishing agent suction pipe are respectively inserted into a first cavity and a second cavity; the first cavity is used for filling 2-bromo-3, 3, 3-trifluoropropene or perfluorohexanone, and the second cavity is filled with water or water containing inorganic salt additives.
However, the fire extinguishing agent of the fire extinguisher is directly sprayed out from the open spray head, the spraying range is small, and the fire extinguishing effect is not ideal.
Disclosure of Invention
The invention aims to provide a hexafluoropropane extinguisher injection device, which has the advantages that: the spraying range of the hexafluoropropane fire extinguishing agent is enlarged, and the atomization characteristic of the fire extinguishing agent is fully exerted, so that the fire extinguishing effect of the hexafluoropropane fire extinguisher is greatly improved.
The technical purpose of the invention is realized by the following technical scheme: including the shower nozzle and be used for connecting the connecting pipe of shower nozzle and fire extinguisher bottle, the one end of shower nozzle is equipped with the pipe that is linked together with cavity in the shower nozzle, the shower nozzle is kept away from the one end of pipe and is seted up the central orifice that is linked together with cavity in the shower nozzle, the periphery of central orifice is equipped with a plurality of scattered orifices that are linked together with cavity in the shower nozzle, the one end threaded connection of connecting pipe is on the fire extinguisher bottle, and the other end is connected on the pipe.
Through above-mentioned scheme, when the operator opened the valve on the fire extinguisher bottle, hexafluoropropane flowed to the cavity of shower nozzle in through the connecting tube, then sprayed away through central orifice and a plurality of orifices of loosing respectively, improved hexafluoropropane's injection velocity and jet distance, scattered the orifice then has increaseed hexafluoropropane's injection region, improved fire control effect greatly.
Furthermore, the periphery of the central spray hole of the spray head is provided with an inclined plane, and the scattered spray holes are formed in the inclined plane.
Through above-mentioned scheme, scatter the orifice and set up on the inclined plane to scatter and have certain angle between orifice and the central authorities orifice, and then can be the umbelliform when making hexafluoropropane pass through the shower nozzle and spray away, improved hexafluoropropane's injection region greatly, improved fire-fighting effect.
Furthermore, the one end threaded connection that the fire extinguisher bottle was kept away from to the connecting pipe is at the pipe inner wall, be equipped with spacing piece on the pipe inner wall, spacing piece is inconsistent with the tip that the connecting pipe stretched into pipe one end.
Through the scheme, when the operator passes through the pipe threaded connection with the shower nozzle on the connecting pipe, spacing piece can be inconsistent with the tip of connecting pipe to prevent that the connecting pipe is excessive to stretch into the drum and extend to contradict with cavity wall in the cavity of shower nozzle, improved the stability of shower nozzle.
Further, the both ends of connecting pipe all establish to soft connecting portion, establish to bellows portion between two soft connecting portion.
Through the scheme, the soft connecting part enables an operator to freely adjust the angle of the connecting pipe relative to the fire extinguisher bottle body and the angle of the spray head relative to the connecting pipe, so that the operator can conveniently adjust the spray angle. The operator can also adjust the length of the connecting pipe by stretching and contracting the corrugated pipe, thereby obtaining the optimal holding length and reducing the possibility of flow rate loss of the hexafluoropropane in the connecting pipe caused by the excessive bending of the connecting pipe.
Furthermore, the connecting pipe overcoat is equipped with the stabilizer bar, the stabilizer bar is towards the one end threaded connection of pipe on the pipe outer wall.
Through above-mentioned scheme, during the use, the operator can be with stabilizing on the pipe outer wall pipe threaded connection, then hold on stabilizing the pipe outer wall to make operator's hand keep away from shower nozzle and intensity of a fire department, reduce the operator by the hexafluoropropane frostbite when gasification or by the possibility of fire burn, the security when having improved the operator and using the shower nozzle.
Further, the outer cover of the stabilizing pipe is provided with an extension pipe, the outer of the stabilizing pipe is connected with a sliding block, a sliding groove which is arranged along the length direction of the extension pipe and used for sliding the sliding block is formed in the outer wall of the extension pipe, and a limiting part which limits the sliding block to move is arranged at one end of the sliding groove, facing the round pipe.
Through the above scheme, when the intensity of a fire is located higher department, the operator can slide the extension pipe towards the direction of keeping away from the stabilizer tube, the extension pipe slides when keeping away from the one end of pipe to the stabilizer tube, the removal of rethread locating part restriction slider, the extension pipe is just by stable connection on the stabilizer tube this moment, the operator alright with holding on the extension pipe, and lift the intensity of a fire that the shower nozzle aimed at higher department and put out a fire, convenient and fast, and because the extension pipe has increaseed the distance between operator and the intensity of a fire, consequently, the security when the operator puts out a fire has been improved.
Furthermore, the limiting part comprises a limiting groove formed in the side wall of the sliding groove, a limiting plate is hinged in the limiting groove, a limiting groove extends out of one end of the limiting plate, one side of the limiting plate, which is far away from the circular tube, is abutted against the groove wall of the limiting groove, a compression spring is arranged on one side of the limiting plate, which faces the circular tube, and two ends of the compression spring are respectively connected to the limiting plate and the groove wall of the limiting groove; when the sliding block slides to one end of the sliding groove far away from the stabilizing pipe, the sliding block is positioned on one side of the limiting plate facing the round pipe.
Through the above scheme, the operator is when the direction slip extension pipe of keeping away from the pipe, the slider offsets and promotes the limiting plate to rotate towards the pipe with one side that the limiting plate deviates from the pipe, compression spring is compressed and has the elastic restoring force this moment, the limiting plate is opened and is made the slider slide in the limiting plate when one side of pipe, the slider no longer contradicts with the limiting plate, the limiting plate just returns the normal position under compression spring's elastic restoring force, and the limiting plate deviates from one side and the spacing groove cell wall of pipe inconsistent, the slider is contradicted when the limiting plate deviates from one side of pipe this moment, just can't promote the limiting plate and rotate towards the direction of keeping away from the pipe, thereby convenient limit the slider between the cell wall of limiting plate.
Further, be connected with a solid fixed cylinder on the stabilization pipe outer wall, gu fixed cylinder female connection has the extension rod, the one end that solid fixed cylinder was kept away from to the extension rod extends to the direction of fire extinguisher bottle.
Through above-mentioned scheme, when the intensity of a fire is located higher department, the operator can be with extension rod threaded connection in the solid fixed cylinder, when putting out a fire to the intensity of a fire, can grip the hand and keep away from the one end of solid fixed cylinder at the extension rod to lift and raise the intensity of a fire that the shower nozzle aimed at higher department and put out a fire, convenient and fast to because the extension rod has increaseed the distance between operator and the intensity of a fire, security when consequently having improved the operator and putting out a fire.
Another object of the present invention is to provide a hexafluoropropane fire extinguisher comprising the above-mentioned injection device for a hexafluoropropane fire extinguisher.
Through above-mentioned scheme, adopt above-mentioned hexafluoropropane fire extinguisher of hexafluoropropane fire extinguisher's injection apparatus, can improve hexafluoropropane's injection velocity and jet distance and injection zone territory, improve hexafluoropropane fire extinguisher's fire extinguishing effect greatly.
In conclusion, the invention has the following beneficial effects:
1. the nozzle enlarges the injection area of the hexafluoropropane, thereby improving the fire extinguishing effect;
2. the extension pipe enlarges the distance between an operator and the fire, thereby improving the safety of the operator when extinguishing the fire.
Drawings
FIG. 1 is a schematic view of the entire structure of embodiment 1;
FIG. 2 is a schematic structural view for embodying a bellows portion in embodiment 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic view of the overall structure of embodiment 2.
In the figure, 1, a spray head; 12. a circular tube; 121. a limiting sheet; 13. a central orifice; 14. spraying holes in a scattered mode; 15. a bevel; 2. a connecting pipe; 21. a soft connection portion; 22. a bellows portion; 3. a stabilizer tube; 31. a slider; 4. an extension tube; 41. a chute; 5. a limiting member; 51. a limiting groove; 52. a limiting plate; 53. a compression spring; 6. a fixed cylinder; 7. an extension pole; 8. a fire extinguisher bottle body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1: as shown in fig. 1, a hexafluoropropane extinguisher injection apparatus, includes shower nozzle 1 and is used for connecting shower nozzle 1 and fire extinguisher bottle 8's connecting pipe 2, the one end fixedly connected with of shower nozzle 1 and the pipe 12 (as shown in fig. 2) that the interior cavity of shower nozzle 1 is linked together, the one end threaded connection of connecting pipe 2 is in the valve department of fire extinguisher bottle 8, other end threaded connection is on the pipe 12 inner wall. After the valve of the fire extinguisher bottle body 8 is opened, the hexafluoropropane can flow into the cavity of the spray head 1 through the connecting pipe 2. The inner diameter of one end of the connecting pipe 2 close to the cylinder is smaller than that of one end of the fire extinguisher bottle body 8, so that the flow rate of hexafluoropropane flowing into the cavity of the nozzle 1 can be increased.
Referring to fig. 2, a central nozzle 13 communicating with the cavity in the nozzle 1 is formed at one end of the nozzle 1 away from the circular tube 12, the nozzle 1 is in a circular truncated cone shape, and the diameter of the end of the nozzle 1 close to the circular tube 12 is smaller than the diameter of the end close to the central nozzle 13. The periphery of the central spray hole 13 of the spray head 1 is provided with an inclined plane 15 inclined towards the circular tube 12, the periphery of the central spray hole 13 of the spray head 1 is provided with five scattered spray holes 14 at equal intervals on the inclined plane 15, the central lines of the scattered spray holes 14 are vertical to the inclined plane 15, and the aperture of the scattered spray holes 14 is smaller than the diameter of the central spray hole 13. Hexafluoropropane flows to the back in the cavity of shower nozzle 1 from connecting pipe 2, sprays away through central orifice 13 and a plurality of orifice 14 that scatter respectively, because it sets up on inclined plane 15 to scatter orifice 14, thereby it has certain angle to scatter between orifice 14 and the central orifice 13, and then can be the umbelliform when making hexafluoropropane pass through shower nozzle 1 and spray away, the injection zone who has improved hexafluoropropane, and hexafluoropropane is the bowl dress cover and establishes on the fire source, reduce the possibility that the fire source spreads to around, the fire extinguishing effect has been improved greatly.
As shown in fig. 2, in order to enhance the sealing performance between the connection tube 2 and the cylinder, an annular limiting sheet 121 is fixedly connected to the inner wall periphery of the circular tube 12, and a rubber pad is bonded to one side of the limiting sheet 121 facing the connection tube 2. When 2 threaded connection of connecting pipe are in the ring, connecting pipe 2 is inconsistent with the rubber pad towards the one end of spacing piece 121, and has the oppression power to the rubber pad, the rubber pad produces deformation and has a reaction force to connecting pipe 2 this moment, make the screw-thread fit between connecting pipe 2 and the drum inner wall inseparabler, thereby convenient and fast's improvement the leakproofness between connecting pipe 2 and the drum, reduce hexafluoropropane from 12 play leakages of pipe and frostbite operator's possibility, the injection apparatus's of hexafluoropropane fire extinguisher security has been improved.
As shown in fig. 2, both ends of the connection pipe 2 are provided as soft connection portions 21, and a bellows portion 22 is provided between the two soft connection portions 21. The soft connection part 21 allows an operator to freely adjust the angle of the connection pipe 2 with respect to the fire extinguisher body 8 and the angle of the nozzle head 1 with respect to the connection pipe 2, thereby facilitating the operator to adjust the spray angle. The operator can also adjust the length of the connection pipe 2 by stretching and contracting the bellows to obtain an optimal grip length and reduce the possibility of flow rate loss of hexafluoropropane within the connection pipe 2 due to excessive bending of the connection pipe 2.
When the source of fire is located above the operator, as shown in fig. 2, the operator is extremely dangerous approaching the source of fire and lifting the spray head 1 (as shown in fig. 1) to spray hexafluoropropane against the source of fire. Therefore, the stabilizing pipe 3 is sleeved outside the connecting pipe 2, one end of the stabilizing pipe 3 facing the round pipe 12 is in threaded connection with the outer wall of the round pipe 12, the extension pipe 4 is sleeved outside the stabilizing pipe 3, and the length of the extension pipe 4 is two thirds of that of the connecting pipe 2. Two sliders 31 of fixedly connected with on the outer wall of stabilizator pipe 3, two sliders 31 set up for the central line symmetry of stabilizator pipe 3, set up on the extension pipe 4 outer wall and set up and supply the gliding spout 41 of slider 31 along extension pipe 4 length direction, spacing groove 51 (as figure 3) has been seted up on the lateral wall of spout 41, spacing inslot 51 is interior to articulate has one end to extend spacing groove 51's limiting plate 52 (as figure 3), one side that limiting plate 52 deviates from pipe 12 is inconsistent with spacing groove 51 cell wall, limiting plate 52 is equipped with compression spring 53 (as figure 3) towards one side of pipe 12, compression spring 53's both ends are fixed connection respectively on the cell wall of limiting plate 52 and spacing groove 51.
Referring to fig. 2 and 3, when a fire source above an operator needs to be extinguished, the operator slides the extension tube 4 in a direction away from the circular tube 12, the slider 31 abuts against one side of the limiting plate 52 away from the circular tube 12 and pushes the limiting plate 52 to rotate towards the circular tube 12, at this time, the compression spring 53 is compressed and has an elastic restoring force, when the limiting plate 52 is opened to enable the slider 31 to slide into the side of the limiting plate 52 towards the circular tube 12, the slider 31 no longer abuts against the limiting plate 52, the limiting plate 52 rotates back to the original position under the elastic restoring force of the compression spring 53, and the side of the limiting plate 52 away from the circular tube 12 abuts against the groove wall of the limiting groove 51, at this time, when the slider 31 abuts against one side of the limiting plate 52 away from the circular tube 12, the limiting plate 52 cannot be pushed to rotate towards the direction away from the circular tube 12, so that, and the extension pipe 4 is stably connected to the stabilization pipe 3. The operator can hold the one end of keeping away from shower nozzle 1 at extension pipe 4, then removes extension pipe 4 and controls shower nozzle 1 and aim at the fire source and put out, because extension pipe 4 has increased the distance between operator and the fire source this moment, consequently improved operator's security greatly. After the use, extension pipe 4 can't be withdrawed to can indicate this hexafluoropropane fire extinguisher of operator to have used, so that the operator in time seeks out unused hexafluoropropane fire extinguisher.
The operation process is as follows: when putting out subaerial fire source, the operator holds on stabilizator pipe 3, then puts out a fire with shower nozzle 1 alignment fire source, and in-process once more, the operator can be through the free adjustment shower nozzle 1's of flexible connecting portion 21 injection direction, also can be through the free length that stretches out of regulation shower nozzle 1 of bellows to reach the best of a rapid and hold length and injection direction. When the fire source that is located the eminence needs to put out, the operator at first removes extension pipe 4 towards the direction of keeping away from shower nozzle 1, until slider 31 removes to between the cell wall of limiting plate 52 and spout 41 orientation drum one end, extension pipe 4 is just stable connection on stabilizator pipe 3 this moment, the operator can grip the one end of keeping away from shower nozzle 1 at extension pipe 4, then lift extension pipe 4, then spray the fire extinguishing with shower nozzle 1 towards the fire source of eminence, the operator can remove extension pipe 4 towards the fire source at this in-process, make the bellows extension, thereby further increase the distance between operator and the fire source, improve operator's security.
Example 2: the utility model provides a hexafluoropropane fire extinguisher's injection apparatus, as figure 4, with embodiment 1's difference lies in, fixedly connected with solid fixed cylinder 6 on the outer wall of stabilizator pipe 3, the nozzle 1 is deviate from to the nozzle mouth of solid fixed cylinder 6, gu fixed cylinder 6 female connection has extension rod 7, extension rod 7's length is established to the two-thirds of connecting pipe 2, extension rod 7 keeps away from the one end of solid fixed cylinder 6 and extends to the direction of fire extinguisher bottle 8. When the fire source is located higher department, the operator can be with extension rod 7 threaded connection in a fixed section of thick bamboo 6, then hold the one end of keeping away from a fixed section of thick bamboo 6 at extension rod 7 through the hand to lift and raise the intensity of a fire that shower nozzle 1 aimed at higher department and put out a fire, convenient and fast, because extension rod 7 has increaseed the distance between operator and the intensity of a fire, security when consequently having improved the operator and putting out a fire.
Example 3: a hexafluoropropane extinguisher comprising either example 1 or example 2.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A hexafluoropropane extinguisher injection apparatus is characterized in that: including shower nozzle (1) and connecting pipe (2) that are used for connecting shower nozzle (1) and fire extinguisher bottle (8), the one end of shower nozzle (1) is equipped with pipe (12) that are linked together with shower nozzle (1) inner chamber, central authorities 'orifice (13) that are linked together with shower nozzle (1) inner chamber are seted up to the one end that pipe (12) were kept away from in shower nozzle (1), the periphery of central authorities' orifice (13) is equipped with a plurality of scattered orifice (14) that are linked together with shower nozzle (1) inner chamber, the one end threaded connection of connecting pipe (2) is on fire extinguisher bottle (8), and the other end is connected on pipe (12).
2. The injection device of a hexafluoropropane extinguisher according to claim 1, wherein: the periphery of the central spray hole (13) of the spray head (1) is provided with an inclined plane (15), and the scattered spray holes (14) are formed in the inclined plane (15).
3. The injection device of a hexafluoropropane extinguisher according to claim 2, wherein: one end threaded connection that fire extinguisher bottle (8) were kept away from in connecting pipe (2) is at pipe (12) inner wall, be equipped with spacing piece (121) on pipe (12) inner wall, spacing piece (121) and connecting pipe (2) stretch into the tip of pipe (12) interior one end and contact.
4. The injection device of a hexafluoropropane extinguisher according to claim 1, wherein: the two ends of the connecting pipe (2) are both provided with soft connecting parts (21), and a corrugated pipe section (22) is arranged between the two soft connecting parts (21).
5. The injection apparatus of a hexafluoropropane fire extinguisher according to claim 1 or 4, wherein: the outer sleeve of the connecting pipe (2) is provided with a stabilizing pipe (3), and one end of the stabilizing pipe (3) facing the round pipe (12) is in threaded connection with the outer wall of the round pipe (12).
6. The injection device of a hexafluoropropane extinguisher according to claim 5, wherein: the utility model discloses a stability tube (3) overcoat is equipped with extension pipe (4), stability tube (3) outer joint has slider (31), set up on extension pipe (4) outer wall along extension pipe (4) length direction and supply gliding spout (41) of slider (31), spout (41) are equipped with locating part (5) that restriction slider (31) removed towards the one end of pipe (12).
7. The injection device of a hexafluoropropane extinguisher according to claim 6, wherein: the limiting piece (5) comprises a limiting groove (51) formed in the side wall of the sliding groove (41), a limiting plate (52) is hinged in the limiting groove (51), the limiting groove (51) extends out of one end of the limiting plate (52), one side, away from the circular tube (12), of the limiting plate (52) is abutted to the groove wall of the limiting groove (51), a compression spring (53) is arranged on one side, facing the circular tube (12), of the limiting plate (52), and two ends of the compression spring (53) are connected to the groove walls of the limiting plate (52) and the limiting groove (51) respectively; when the sliding block (31) slides to one end of the sliding groove (41) far away from the stabilizing pipe (3), the sliding block (31) is positioned on one side of the limiting plate (52) facing the circular pipe (12).
8. The injection device of a hexafluoropropane extinguisher according to claim 7, wherein: the fire extinguisher is characterized in that a fixed cylinder (6) is connected to the outer wall of the stabilizing pipe (3), an extension rod (7) is connected to the inner thread of the fixed cylinder (6), and one end, far away from the fixed cylinder (6), of the extension rod (7) extends towards the direction of the fire extinguisher bottle body (8).
9. A hexafluoropropane fire extinguisher is characterized in that: a spray device comprising the hexafluoropropane fire extinguisher as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917784.7A CN110613907B (en) | 2019-09-26 | 2019-09-26 | Hexafluoropropane fire extinguisher and injection apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917784.7A CN110613907B (en) | 2019-09-26 | 2019-09-26 | Hexafluoropropane fire extinguisher and injection apparatus thereof |
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| Publication Number | Publication Date |
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| CN110613907A true CN110613907A (en) | 2019-12-27 |
| CN110613907B CN110613907B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910917784.7A Active CN110613907B (en) | 2019-09-26 | 2019-09-26 | Hexafluoropropane fire extinguisher and injection apparatus thereof |
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| CN (1) | CN110613907B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114028750A (en) * | 2021-11-10 | 2022-02-11 | 浙江超亿消防装备有限公司 | Fire extinguisher special for chemical laboratory |
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| JP2002136617A (en) * | 2000-11-06 | 2002-05-14 | Miyata Ind Co Ltd | Wide-range foam spraying head |
| CN2532877Y (en) * | 2002-02-06 | 2003-01-29 | 李庆昌 | Nozzle device of foam extinguisher |
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| CN114028750A (en) * | 2021-11-10 | 2022-02-11 | 浙江超亿消防装备有限公司 | Fire extinguisher special for chemical laboratory |
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| Publication number | Publication date |
|---|---|
| CN110613907B (en) | 2023-08-11 |
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