CN109224353B - Fire-fighting water spray head for dust remover - Google Patents
Fire-fighting water spray head for dust remover Download PDFInfo
- Publication number
- CN109224353B CN109224353B CN201811027117.3A CN201811027117A CN109224353B CN 109224353 B CN109224353 B CN 109224353B CN 201811027117 A CN201811027117 A CN 201811027117A CN 109224353 B CN109224353 B CN 109224353B
- Authority
- CN
- China
- Prior art keywords
- hole
- plugboard
- bimetal
- fire
- base
- Prior art date
- 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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Links
- 239000000428 dust Substances 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 20
- 239000007921 spray Substances 0.000 title abstract description 14
- 239000011324 bead Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 2
- UTICYDQJEHVLJZ-UHFFFAOYSA-N copper manganese nickel Chemical compound [Mn].[Ni].[Cu] UTICYDQJEHVLJZ-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/16—Releasing means, e.g. electrically released heat-sensitive with thermally-expansible links
-
- 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
Landscapes
- 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 fire-fighting water spray head for a dust remover, which comprises a spray head frame and a water splashing disc, wherein the lower end of the spray head frame is provided with a base, a first through hole is formed in the base, the water splashing disc comprises a disc and splash grooves uniformly distributed around the disc, the disc is fixedly connected with the upper end of the spray head frame, a slot is formed in the base, the opening end of the first through hole is provided with a plugboard matched with the slot, and a second through hole matched with the first through hole is formed in the plugboard; the base top surface is equipped with the bimetal component that contacts with the picture peg, bimetal component sets up in the one end of picture peg, and contradicts with it for promote the picture peg and make the second through-hole on the picture peg align with first through-hole. The adoption is from bimetal component that resets as the components and parts that are heated, and is resistant falls, and is not fragile, and the temperature reduces when the condition of a fire is eliminated, and bimetal component resets, and manual slip picture peg seals the through-hole once more, and the fire control sprinkler bead need not to change, can used repeatedly.
Description
Technical Field
The invention relates to the technical field of fire-fighting equipment, in particular to a fire-fighting water spray head for a dust remover.
Background
The fire-fighting spray header is used for a fire-fighting spray system, and when a fire disaster occurs, water is sprayed out through the spray header splash box to extinguish the fire. The fire-fighting nozzle is automatically started in a preset temperature range under the action of heat or is started by control equipment according to fire signals, and is a nozzle for sprinkling water to extinguish fire according to the designed sprinkling shape and flow. However, the glass bursts, and the new fire-fighting sprinkler head is only reinstalled, and the glass is fragile and is easy to damage in the process of transportation or installation because the glass is arranged in the fire-fighting sprinkler head, so that the sprinkler head cannot be used, and only the new sprinkler head can be reinstalled, thereby causing the waste of the sprinkler head and increasing the cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a fire-fighting sprinkler head which can be reused, is safe and convenient to transport and is used for a dust remover, and the sprinkler head can also reset a plugboard for reuse under the condition that a fire is eliminated.
In order to achieve the above purpose, the technical scheme of the invention is to design a fire-fighting sprinkler head for a dust remover, which comprises a sprinkler head frame and a splash box, wherein the lower end of the sprinkler head frame is provided with a base, a first through hole for water to pass through is formed in the base, the splash box comprises a disc and splash grooves uniformly distributed around the disc, the disc is fixedly connected with the upper end of the sprinkler head frame, the axis of the disc coincides with the axis of the through hole, a slot is formed in the base, a matched plugboard is arranged in the slot, and a second through hole matched with the first through hole is formed in the plugboard; the base top surface is equipped with the bimetal component that contacts with the picture peg, bimetal component sets up in the one end of picture peg, and contradicts with it for promote the picture peg and make the second through-hole on the picture peg align with first through-hole. The sprinkler bead is installed on the top in room, warehouse or other spaces, and when the conflagration breaks out, indoor temperature rise, and the expansion coefficient of bimetal section initiative layer is greater than the expansion coefficient of passive layer, and the deformation of initiative layer is greater than the deformation of passive layer to make the whole bending to passive layer one side of bimetal section, promote the picture peg to slide along the slot, the second through-hole aligns with first through-hole, and water sprays out, sprays the diffusion all around under the effect of splash box, realizes the effect of putting out a fire. When the fire is eliminated and the air temperature is reduced, the bimetal section is restored, the manual reset plugboard is reset to close the through hole again, the slot edge of the slot is abutted against the edge of the plugboard, downward pressure is generated on the plugboard, and the tightness of the plugboard to the first through hole is improved.
The preferable technical scheme is that the bimetal member comprises a bimetal and a supporting frame, the bimetal comprises a welding section and a bimetal section, the welding section is fixedly welded with the base or the welding section is fixedly welded with the supporting frame, the bimetal section comprises an active layer and a passive layer, and the passive layer faces the plugboard and is abutted to one end of the plugboard.
The preferable technical scheme is that the bimetal member comprises a bimetal sheet, a push rod and a hinged frame, wherein the bimetal sheet is perpendicular to the plane of the base, the hinged frame is arranged on the top surface of the base, the bimetal sheet comprises a welding section at the upper end and a bimetal section at the lower end, the bimetal section comprises an active layer and a passive layer, the welding section of the bimetal sheet is welded and fixed on a nozzle frame or the hinged frame, one end of the push rod is in interference with the passive layer and parallel to the plane of the bimetal section, the other end of the push rod is in interference with one end of the plugboard, the hinged frame and the push rod form a rotary hinged part, and the distance between the rotary hinged part and one end of the push rod, which is close to the plugboard, is smaller than the distance between the rotary hinged part and one end of the push rod, which is far away from the plugboard. The push rod and the hinged frame are combined to form a member similar to a lever, the bimetal section is pressed at one end of the push rod after being deformed, the other end of the push rod is contacted with one end of the plugboard and pushes the plugboard, so that the second through hole is aligned with the first through hole, water is sprayed out, the member similar to the lever amplifies the pushing of the plugboard by the deformation force of the bimetal, the water spraying amount of the water spraying head is improved, and the fire extinguishing performance is improved.
The further preferable technical scheme is that a limit baffle is arranged at one end, far away from the bimetal member, of the slot, and the distance between the limit baffle and the center of the circle of the first through hole is equal to the distance between one end, far away from the bimetal member, of the plugboard and the center of the circle of the second through hole. The limiting baffle can limit the sliding distance of the blocking plugboard, excessive sliding is avoided, the second through hole on the plugboard is not overlapped or partially overlapped with the first through hole, the water yield in the through hole is affected, and the fire extinguishing performance is reduced.
Further preferable technical scheme is that the end part of the plugboard is provided with a handle. The plugboard is provided with a handle, so that the plugboard is convenient to manually stir and reset, and the through hole is resealed.
According to a further preferable technical scheme, a through hole is formed in the center line position of the bimetal section, and the through hole is circular, curved or rectangular. The middle part of the bimetal section is provided with a hole, so that the material of the bimetal section at the middle part is reduced, a bending area which is easy to bend is formed, the critical point of temperature change can be responded quickly, and the reaction precision of the bimetal section can be improved.
In a further preferable technical scheme, the plurality of through holes are arranged in a linear arrangement. The arrangement of the through holes enables the bimetal section to be easier to bend, the precision is further improved, the situation of misspraying, delayed spraying or non-spraying is avoided, meanwhile, the manufacturing cost of the bimetal member is reduced, and the economic benefit is improved.
The further preferable technical scheme is that the edge of the splash groove is provided with a plurality of comb teeth, and the comb teeth are uniformly distributed perpendicular to the bottom surface of the splash groove. The comb teeth can effectively disperse water flow, so that the spraying range of the spray head is enlarged, and the fire extinguishing performance of the spray head is improved.
Further preferable technical scheme is that the periphery of the first through hole is provided with an annular groove, a sealing ring is embedded in the annular groove, and the sealing ring is contacted with the outer side of the second through hole on the plugboard. The sealing performance between the plugboard and the first through hole is improved due to the arrangement of the sealing ring, the leakage of water from the edge of the plugboard is reduced, and the stability of the sprinkler bead is further improved.
Further preferable technical scheme is that a thread cylinder for installation is arranged outside the first through hole on the bottom surface of the base. Adopt the screw thread section of thick bamboo to be connected with fire control water pipe, realized the effect of sprinkler bead quick installation fixed, saved the installation time of sprinkler bead, improved work efficiency.
The invention has the advantages and beneficial effects that: the fire-fighting sprinkler head has the advantages of simple and firm structure, safety, reliability and uniform application, adopts the self-reset bimetal member as a heated component, is resistant to falling and damage, reduces the temperature after the fire is extinguished, resets the bimetal member, manually slides the plugboard to seal the first through hole again, does not need to be replaced, and can be reused. The through holes are formed in the middle of the bimetal section, so that the bimetal section is easier to bend, the precision is further improved, the situation of misspraying, delayed spraying or non-spraying is avoided, meanwhile, the manufacturing cost of the bimetal member is reduced, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic view showing the structure of a sprinkler head base according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of embodiment 2 of the present invention;
in the figure: 1. a base; 2. a slot; 3. inserting plate; 4. a second through hole; 5. a bimetal member; 501. an active layer; 502. a passive layer; 503. a welding section; 6. a supporting frame 7 and a limiting baffle; 8. a first through hole; 9. a push rod; 10. a hinge bracket; 11. the hinge is turned.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
As shown in figure 1, the invention relates to a fire-fighting sprinkler head for a dust remover, which comprises a sprinkler head frame and a splash box, wherein the lower end of the sprinkler head frame is provided with a base 1, a first through hole for water to pass through is formed in the base 1, the splash box comprises a disc and splash grooves uniformly distributed around the disc, the disc is fixedly connected with the upper end of the sprinkler head frame, the axis of the disc coincides with the axis of the through hole, a slot 2 is formed in the base 1, a matched plugboard 3 is arranged in the slot 2, and a second through hole 4 matched with the first through hole is formed in the plugboard 3; the base top surface is equipped with the bimetal component that contacts with the picture peg, bimetal component sets up in the one end of picture peg, and contradicts with it for promote the picture peg and make the second through-hole on the picture peg align with first through-hole.
The bimetal member comprises a bimetal 5 and a support frame 6, the bimetal 5 comprises a welding section 503 and a bimetal section, the welding section is fixedly welded with the base or the welding section is fixedly welded with the support frame, the bimetal section comprises an active layer 501 and a passive layer 502, and the passive layer faces the plugboard and is abutted against one end of the plugboard.
The slot 2 is far away from the one end of bimetal member is equipped with limit baffle 7, limit baffle 7 with the distance of first through-hole centre of a circle equals the picture peg 3 is far away from the distance between bimetal member one end and the second through-hole centre of a circle.
The radii of the first through hole and the second through hole can be the same or different, the radii are the same, and when the first through hole and the second through hole are aligned, the water yield is maximum
The active layer is preferably made of a manganese-nickel-copper alloy material having a high expansion coefficient, and the passive layer is preferably made of a nickel-iron alloy material having a low expansion coefficient, and the nickel content is preferably 36-45%.
The bimetal strip can also be welded vertically on the top surface of the base, with the passive layer of the bimetal section facing the insert plate.
The plugboard can also be a plastic part, and the plastic part has light weight and is easier to push by the bimetal member.
The thickness of the bimetal section is 0.18-0.2mm, and the bimetal section is divided into an active layer and a passive layer, wherein the thickness of the active layer is larger than that of the passive layer, which is more beneficial to bending and deformation of the component, and bimetallic strips or multi-metal strips with different materials or different thickness ratios can be selected according to different fire-fighting grades and different action temperatures, so that the strain sensitivity of the sprinkler head is changed, the fire-extinguishing efficiency is improved, and meanwhile, mistiming is avoided and the loss is reduced.
Example 2
As shown in figure 1, the invention relates to a fire-fighting sprinkler head for a dust remover, which comprises a sprinkler head frame and a splash box, wherein the lower end of the sprinkler head frame is provided with a base 1, a first through hole 8 for water to pass through is formed in the base 1, the splash box comprises a disc and splash grooves uniformly distributed around the disc, the disc is fixedly connected with the upper end of the sprinkler head frame, the axis of the disc coincides with the axis of the through hole, a slot 2 is formed in the base 1, a matched plugboard 3 is arranged in the slot 2, and a second through hole 4 matched with the first through hole is formed in the plugboard 3; the base top surface is equipped with the bimetal component that contacts with the picture peg, the bimetal component sets up in the one end of picture peg, and contradicts with it for promote the picture peg and make the second through-hole 4 on the picture peg align with first through-hole 8.
The bimetal member comprises a bimetal sheet, a push rod 9 and a hinge frame 10, wherein the bimetal sheet is perpendicular to the plane of the base, the hinge frame 10 is arranged on the top surface of the base, the bimetal sheet comprises a welding section 503 at the upper end and a bimetal section at the lower end, the bimetal section comprises an active layer 501 and a passive layer, the welding section 503 of the bimetal sheet is welded and fixed on the hinge frame 10, one end of the push rod 9 is in interference with the passive layer and parallel to the plane of the bimetal section, the other end of the push rod is in interference with one end of the plugboard 3, the hinge frame 10 and the push rod 9 form a rotary hinge part 11, and the distance between the rotary hinge part 11 and one end of the push rod, which is close to the plugboard, is smaller than the distance between the rotary hinge part and one end of the plugboard, which is far away from the plugboard.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. The utility model provides a fire control sprinkler bead for dust remover, includes shower nozzle frame and splash box, shower nozzle frame lower extreme is equipped with the base, set up the first through-hole that is used for rivers to pass through in the base, splash box includes disc and disc evenly distributed's all around splash box, the upper end fixed connection of disc and shower nozzle frame, the axis of disc coincides with the axis of through-hole, its characterized in that, be equipped with the slot on the base, set up matched with picture peg in the slot, be equipped with on the picture peg with first through-hole position matched with second through-hole; the top surface of the base is provided with a bimetal member which is contacted with the plugboard, and the bimetal member is arranged at one end of the plugboard and is in contact with the plugboard and is used for pushing the plugboard to align a second through hole on the plugboard with the first through hole;
the bimetal member comprises a bimetal sheet and a support frame, the bimetal sheet comprises a welding section and a bimetal section, the welding section is fixedly welded with the base or fixedly welded with the support frame, the bimetal section comprises an active layer and a passive layer, and the passive layer faces the plugboard and is in contact with one end of the plugboard;
the active layer is made of a manganese-nickel-copper alloy material with a high expansion coefficient, and the passive layer is made of a nickel-iron alloy material with a low expansion coefficient; the thickness of the active layer is greater than that of the passive layer.
2. The fire-fighting sprinkler head for a dust remover according to claim 1, wherein a limit baffle is arranged at one end of the slot far away from the bimetal member, and the distance between the limit baffle and the center of the first through hole is equal to the distance between one end of the plugboard far away from the bimetal member and the center of the second through hole.
3. The fire fighting sprinkler head for a dust collector according to claim 2, wherein the end of the insert plate is provided with a handle.
4. A fire fighting sprinkler head for a dust collector according to claim 3, wherein the bimetal section is provided with a through hole at a center line position, and the through hole is circular or curved or rectangular.
5. The fire fighting sprinkler head for a dust collector according to claim 4, wherein the through holes are provided in plurality and are arranged in a line shape.
6. The fire protection sprinkler head for a dust collector according to any one of claims 1-5, wherein the edge of the splash box is provided with a plurality of comb teeth, the comb teeth being evenly distributed perpendicular to the bottom surface of the splash box.
7. The fire protection sprinkler head for a dust remover according to claim 6, wherein the outer periphery of the first through hole is provided with an annular groove, and a sealing ring is embedded in the annular groove and is contacted with the outer side of the second through hole on the plugboard.
8. The fire protection sprinkler head for a dust collector according to claim 7, wherein a screw cylinder for installation is provided outside the first through hole of the bottom surface of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811027117.3A CN109224353B (en) | 2018-09-04 | 2018-09-04 | Fire-fighting water spray head for dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811027117.3A CN109224353B (en) | 2018-09-04 | 2018-09-04 | Fire-fighting water spray head for dust remover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109224353A CN109224353A (en) | 2019-01-18 |
| CN109224353B true CN109224353B (en) | 2024-03-22 |
Family
ID=65067274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811027117.3A Active CN109224353B (en) | 2018-09-04 | 2018-09-04 | Fire-fighting water spray head for dust remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109224353B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136458B (en) * | 2019-05-21 | 2021-10-01 | 江苏鸿康智能科技有限公司 | Traffic signal lamp with dust removal function |
| CN110663392B (en) * | 2019-09-19 | 2022-01-04 | 杭州中艺生态环境工程有限公司 | Loosening-proof ecological greening local plant planting blanket for saline-alkali soil discharge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757866A (en) * | 1971-11-08 | 1973-09-11 | Grinnell Corp | On-off sprinkler |
| US4040304A (en) * | 1976-04-13 | 1977-08-09 | Mccabe Francis J | Clutch motor for use in resettable fire damper |
| CN201260860Y (en) * | 2008-09-17 | 2009-06-24 | 陈贤明 | Temperature-sensing rotary type sprinkling and fire-fighting nozzle |
| CN104225851A (en) * | 2014-10-23 | 2014-12-24 | 常景泓 | Fire protection sprayer capable of starting and stopping quickly and repeatedly |
| CN204034108U (en) * | 2014-06-11 | 2014-12-24 | 浙江恒安消防安全设备有限公司 | A kind of erect type shower nozzle |
| CN205964785U (en) * | 2016-08-24 | 2017-02-22 | 南安市恒南消防器材有限公司 | Two splash box fire control shower nozzles |
| CN107875554A (en) * | 2017-11-08 | 2018-04-06 | 高邮市盛鑫消防科技有限公司 | Flow automatic regulation water cannon shower nozzle |
| CN107899168A (en) * | 2017-11-19 | 2018-04-13 | 龙文凯 | Infrared detection early warning extinguishing device |
| CN207768986U (en) * | 2017-12-28 | 2018-08-28 | 福建南安天航消防设备有限公司 | A kind of fire-fighting spray gun with hydraulic pressure regulatory function |
| CN209316904U (en) * | 2018-09-04 | 2019-08-30 | 江苏人和环保设备有限公司 | A kind of fire-fighting fountain head for deduster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6641059B2 (en) * | 2001-01-10 | 2003-11-04 | Gordon J. Waligorski | Sprinkler head cover |
-
2018
- 2018-09-04 CN CN201811027117.3A patent/CN109224353B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757866A (en) * | 1971-11-08 | 1973-09-11 | Grinnell Corp | On-off sprinkler |
| US4040304A (en) * | 1976-04-13 | 1977-08-09 | Mccabe Francis J | Clutch motor for use in resettable fire damper |
| CN201260860Y (en) * | 2008-09-17 | 2009-06-24 | 陈贤明 | Temperature-sensing rotary type sprinkling and fire-fighting nozzle |
| CN204034108U (en) * | 2014-06-11 | 2014-12-24 | 浙江恒安消防安全设备有限公司 | A kind of erect type shower nozzle |
| CN104225851A (en) * | 2014-10-23 | 2014-12-24 | 常景泓 | Fire protection sprayer capable of starting and stopping quickly and repeatedly |
| CN205964785U (en) * | 2016-08-24 | 2017-02-22 | 南安市恒南消防器材有限公司 | Two splash box fire control shower nozzles |
| CN107875554A (en) * | 2017-11-08 | 2018-04-06 | 高邮市盛鑫消防科技有限公司 | Flow automatic regulation water cannon shower nozzle |
| CN107899168A (en) * | 2017-11-19 | 2018-04-13 | 龙文凯 | Infrared detection early warning extinguishing device |
| CN207768986U (en) * | 2017-12-28 | 2018-08-28 | 福建南安天航消防设备有限公司 | A kind of fire-fighting spray gun with hydraulic pressure regulatory function |
| CN209316904U (en) * | 2018-09-04 | 2019-08-30 | 江苏人和环保设备有限公司 | A kind of fire-fighting fountain head for deduster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109224353A (en) | 2019-01-18 |
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