CN111001107A - Combined pressure rotational flow open type water mist spray head applied to large-scale passenger liner - Google Patents
Combined pressure rotational flow open type water mist spray head applied to large-scale passenger liner Download PDFInfo
- Publication number
- CN111001107A CN111001107A CN201911051014.5A CN201911051014A CN111001107A CN 111001107 A CN111001107 A CN 111001107A CN 201911051014 A CN201911051014 A CN 201911051014A CN 111001107 A CN111001107 A CN 111001107A
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- Prior art keywords
- nozzle
- cylinder part
- water mist
- hole
- combined pressure
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
- A62C3/10—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles in ships
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention relates to a combined pressure rotational flow open type water mist spray head applied to a large mail steamer, which comprises: the connecting part comprises a first cylinder part, a second cylinder part and a third cylinder part which are sequentially fixedly connected and are hollow, and a plurality of inclined holes are formed in the side wall of the first cylinder part; the filter screen cylinder is reversely buckled on the first cylinder part in a tight fit mode so as to cover the first cylinder part on the inner side of the first cylinder part; the nozzle base is detachably connected with the third cylinder part and is also provided with a plurality of nozzle mounting holes; and the nozzles are respectively and correspondingly arranged in the nozzle mounting holes, a first taper hole close to the nozzle mounting hole and a second taper hole connected with the first taper hole are arranged in the nozzle along the axial direction of the nozzle, the diameter of the first taper hole is gradually reduced along with the distance from the nozzle mounting hole, and the diameter of the second taper hole is gradually increased along with the distance from the first taper hole. The invention has the advantages that each part is simple and convenient to install and replace, the easily damaged parts are convenient to store, and meanwhile, the coverage area of the water mist sprayed by the nozzle is large, and the fire extinguishing effect is good.
Description
Technical Field
The invention relates to the technical field of nozzles for fire fighting of large-scale mail steamer, in particular to a combined pressure rotational flow open type water mist nozzle applied to a large-scale mail steamer.
Background
Large cruise ships are a hot spot for recent market pursuits and are closely concerned by all parties. The design and construction of the large-scale cruise ship are in a zero-base state in China, the large-scale cruise ship is luxurious in decoration, exquisite in interior decoration, dense in personnel and large in cabin quantity, so that the factors causing fire disasters are more complex and diversified, and the requirement on a fire extinguishing system is higher. The water mist fire extinguishing system is the best choice for the large-scale post ship fire extinguishing system due to the characteristics of affinity of water-based environment, low water release and the like. Efforts are therefore made to drive the application of water mist fire suppression systems to large mail ships. The water mist nozzle is one of the most critical parts of the water mist fire extinguishing system, and the design of the water mist nozzle suitable for the large-scale cruise ship has important significance for propelling the water mist fire extinguishing system to the large-scale cruise ship.
For open type nozzles of water mist fire extinguishing systems, a plurality of related patents exist in China at present, most of the nozzle shells published in China adopt an integrated structure, filter screens are installed and fixed through special parts, the nozzles are inconvenient to install and replace, and meanwhile, the working pressure range is small, so that the use of the existing nozzles on large-scale luxury mail steamer is limited. In view of the above problems, no good solution is available at present.
Disclosure of Invention
The invention aims to provide a combined pressure rotational flow open type water mist spray head suitable for a large-scale mail steamer, each part of the water mist spray head is simple and convenient to install and replace, the sprayed water mist has a large coverage area, and the working pressure range is wide.
The scheme adopted by the invention for solving the technical problems is as follows:
a combined pressure rotational flow open type water mist spray head applied to a large mail steamer comprises:
the connecting part comprises a first cylinder part, a second cylinder part and a third cylinder part which are fixedly connected in sequence and are hollow, an axial through hole for water to flow through is formed in the connecting part after the first cylinder part, the second cylinder part and the third cylinder part which are hollow are connected, the second cylinder part is detachably connected to a high-pressure water pipe, the diameter of the first cylinder part is smaller than that of the second cylinder part, and a plurality of inclined holes for water to enter are formed in the side wall of the first cylinder part;
the filter screen cylinder is provided with a plurality of filter holes and is reversely buckled on the first cylinder part in a tight fit mode so as to cover the first cylinder part on the inner side of the first cylinder part;
the nozzle base is detachably connected with the third barrel part, a cavity communicated with the axial through hole is formed in the nozzle base, and a plurality of nozzle mounting holes communicated with the cavity are formed in the nozzle base; and
a plurality of nozzles, a plurality of nozzles are installed respectively correspondingly in a plurality of nozzle mounting holes, be provided with along its axial in the nozzle and be close to the first bell mouth of nozzle mounting hole and with first bell mouth is connected and is close to the second bell mouth of atmosphere end, the diameter of first bell mouth is along keeping away from the nozzle mounting hole reduces gradually, the diameter of second bell mouth is along keeping away from first bell mouth increases gradually.
Further, an included angle between the axis of the inclined hole and the transverse plane of the connecting part is 30-45 degrees.
Further, two inclined holes are arranged on the first cylinder part, and the two inclined holes are symmetrical about a diameter of the first cylinder part.
Further, the second cylinder part is connected with the high-pressure water pipe through threads.
Furthermore, the nozzle base is provided with a mounting boss, the nozzle mounting hole is arranged in the mounting boss, the nozzle is connected with the nozzle mounting hole through threads,
further, the included angle between the axis of the nozzle mounting hole and the axis of the nozzle base is 45 degrees.
Further, a spiral guide groove for guiding water flow is arranged on the inner side wall, close to the nozzle mounting hole, of the nozzle, and the spiral guide groove is located on the end side, far away from the second conical hole, of the first conical hole.
Further, the third cylinder part is connected with the nozzle base through threads.
Further, the central angle of the first tapered hole and the central angle of the second tapered hole are both 30 °.
Furthermore, the connecting part, the filter screen cylinder, the nozzle base and the nozzle are all made of erosion-resistant stainless steel materials, and the surfaces of the connecting part, the filter screen cylinder, the nozzle base and the nozzle are all subjected to chromium-nickel plating treatment.
Compared with the prior art, the invention has at least the following beneficial effects:
1) the invention has novel and unique structure, the parts of the water mist spray head are assembled in a detachable connection mode by adopting a combined method, on one hand, the water mist spray head is convenient to process and manufacture, on the other hand, the water mist spray head is also convenient to install and replace, simultaneously, the damage rate and the replacement rate of each part of the spray head in the use process are different, wherein the replacement frequency of a filter screen is higher, and the damage rate of a nozzle is higher;
2) the structure of the water inlet and the nozzle is optimized, for the water inlet, three water inlets are arranged on the connecting part, wherein the center of the top end is provided with a central water inlet, the side wall is provided with two inclined holes which are distributed at equal angles of 180 degrees, the inclined holes are perpendicular to the axis of the connecting part and form an angle of 30 degrees with the cross section of the cylinder, after water enters the spray head from the central water inlet and the side water inlet, the lateral water flow rotationally impacts the axial water flow to form a strong disturbance rotational flow effect, and finally the three water flows rotationally and acceleratively enter the cavity of the spray head base, so that the flow velocity of the water flow is increased, and the rotational flow effect is increased, so that the spraying effect;
3) the nozzle is sequentially provided with a spiral guide groove, a first conical hole and a second conical hole, water flow entering a cavity of the nozzle base is in a high-speed high-pressure state, high-speed high-pressure water flow enters each nozzle, the water flow entering the nozzle firstly passes through the spiral guide groove, the water flow has certain rotation acceleration effect under the effect of the spiral guide groove and then enters the first conical hole, the first conical hole structure has the functions of boosting and accelerating, the pressure and the speed of the water flow can be further increased, the water flow further boosted and accelerated passes through the second conical hole before being sprayed out through the nozzle, partial kinetic energy is converted into pressure energy, the pressure water film is sprayed out through the conical structure holes, and the high-speed pressure water film is crushed into water mist with small mist drop diameter under the combined action of the water film and air after being contacted with the air, so that the spraying effect and the spraying area are increased, thereby increasing the spraying fire extinguishing capability of the open type water mist spray nozzle.
Drawings
FIG. 1 is an overall external view of an open water mist head according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of an open water mist head according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a connecting portion according to an embodiment of the present invention;
FIG. 4 is a half-sectional view of a connecting portion in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a filter screen cartridge according to an embodiment of the present invention;
FIG. 6 is a half-sectional view of a nozzle base in an embodiment of the present invention;
FIG. 7 is a schematic structural view of a nozzle in an embodiment of the present invention;
FIG. 8 is a half-sectional view of a nozzle in an embodiment of the present invention.
Detailed Description
The following examples are provided to further illustrate the present invention for better understanding, but the present invention is not limited to the following examples.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, the invention discloses a combined pressure rotational flow open type water mist spray head suitable for a large-scale mail steamer, which comprises a connecting part 1, a filter screen cylinder 2, a nozzle base 3 and a plurality of nozzles 4. Referring to fig. 3 and 4, the connecting part 1 comprises a first cylindrical part 11, a second cylindrical part 12 and a third cylindrical part 13 which are fixedly connected in sequence and are hollow, and an axial through hole 10 for water to flow through is formed in the connecting part 1 after the hollow first cylindrical part 11, the second cylindrical part 12 and the third cylindrical part 13 are connected. In the present embodiment, the diameters of the first tube portion 11, the second tube portion 12, and the third tube portion 13 are increased in order. The outer wall of the second cylindrical part 12 is provided with external threads which are connected with the high-pressure water pipe through threads, so that the connecting part 1 can be conveniently assembled and disassembled. Referring to fig. 5, the filter screen cylinder 2 has a hollow cylindrical shape with one open end and the other closed end, and a plurality of filter holes 20 are formed on the side wall and the end part thereof. The filter screen cylinder 2 is reversely buckled on the first cylinder part 11 in a close fit mode to cover the first cylinder part 11 on the inner side of the first cylinder part, so that water entering the first cylinder part 11 is firstly filtered by the filter screen cylinder 2, and impurities contained in the water entering the connecting part 1 from the high-pressure water pipe are prevented from blocking the spray head. The filter screen cylinder 2 is reversely buckled on the first cylinder body 11 in a tight fit mode, and the installation mode also enables the pressure of water flow from the high-pressure water pipe on the surface of the filter screen cylinder 2 to further limit the radial and axial movement of the filter screen cylinder 2, and facilitates the installation and replacement of the filter screen cylinder 2. In order to enhance the disturbance effect of the incoming water flow, a plurality of inclined holes 110 are arranged on the side wall of the first cylinder 11, and the included angle between the axis of the inclined holes 110 and the cross section of the first cylinder 11 is 30-45 degrees. In the present embodiment, two inclined holes 110 are provided on the side wall of the first cylinder 11, the two inclined holes 110 are symmetrical with respect to a straight line of the first cylinder 11, and both the two inclined holes 110 form an angle of 30 ° with a cross section of the first cylinder. Therefore, water enters the axial through hole 10 from the water inlet end at the top of the first cylinder 11 and the two inclined holes 110 on the side wall through the high-pressure water pipe, the water flow entering from the inclined holes 110 in the process of entering the axial through hole 10 rotationally impacts the axial water flow to form a strong disturbance rotational flow effect, and finally the three water flows enter the axial through hole 10 in an accelerated manner.
The inner wall of the third cylinder 13 is provided with threads which are also connected with the nozzle base 3 through threads, so that the third cylinder is convenient to disassemble and assemble. As shown in fig. 6, a cavity 30 communicated with the axial through hole 10 is provided in the nozzle base 3, and three disturbed water flows entering the axial through hole 10 from the water inlet end at the top of the first cylinder 11 and the two inclined holes 110 on the side wall enter the cavity 30 through the axial through hole 10, so that the high-pressure water flow is prevented from directly impacting the nozzle 4, and the nozzle 4 is protected by buffering. The nozzle base 3 is further provided with a plurality of mounting bosses, each mounting boss is provided with a nozzle mounting hole 31 communicated with the cavity 30, and in order to facilitate water outlet and maintain the water flow rate of water, an included angle between the axis of the nozzle mounting hole 31 and the axis of the nozzle base 3 is set to be 45 degrees. In this embodiment, four mounting bosses, four nozzle mounting holes 31, and four nozzles 4 are provided at equal intervals on the nozzle base 3, an internal thread is provided on the inner side wall of the nozzle mounting hole 31, an external thread is provided on the four nozzles 4, and the nozzles 4 are connected to the nozzle mounting holes 31 by a thread. Referring to fig. 7 and 8, a first tapered hole 41 close to the nozzle mounting hole 31 and a second tapered hole 42 connected to the first tapered hole 41 and close to the atmosphere end are provided in the nozzle 4 along the axial direction thereof, the diameter of the first tapered hole 41 gradually decreases as it goes away from the nozzle mounting hole 31, and the diameter of the second tapered hole 42 gradually increases as it goes away from the first tapered hole 41. Therefore, when water flows into the first tapered hole 41 from the cavity 30, the flow speed and the pressure are gradually increased, and then the water flows through the second tapered hole 42 to be sprayed out, partial kinetic energy of the water flow is converted into pressure energy, so that the pressure water sprayed out through the nozzle 4 has higher flow speed and pressure, and is favorable for forming fog drops or water mist with smaller diameter after contacting with air. In this embodiment, the first tapered hole 41 and the second tapered hole 42 are both 30 ° to facilitate the formation of pressure energy and the release of spray. In order to enable the water flow to flow into the nozzle 4 in a rotating and accelerating manner, a spiral guide groove for guiding the water flow is arranged on the inner side wall of the nozzle 4 close to the nozzle mounting hole 31, and the spiral guide groove is positioned at the end side of the first tapered hole 41 far away from the second tapered hole 42, so that the water flow can flow along the spiral guide groove in a rotating manner and then enter the first tapered hole 41, and further the kinetic energy of the water flow is increased. In this embodiment, in order to increase the lifetime of the water mist head, each part is made of erosion-resistant stainless steel material, and the surface of each part is subjected to chrome-nickel plating.
The working principle of the invention is as follows: after the pressure water flowing out of the high-pressure water pipe filters impurities which easily block the nozzle 4 through the filter screen cylinder 2, the pressure water enters the axial through hole 10 of the connecting part 1 from the top water inlet end of the first cylinder part 11 and the inclined holes 110 in the side wall, wherein the lateral water flow entering from the two inclined holes 110 in the side wall is in a rotating state when entering the spray head, can rotationally impact the axial water flow entering from the top water inlet end of the first cylinder part 11 to form a strong disturbance rotational flow effect, and then the three water flows rotate to enter the cavity 30 of the nozzle base 3 at an accelerated speed. The rivers that get into the cavity 30 of nozzle base 3 are in high-speed high-pressure state, the rivers that enter into in each nozzle 4 of high-speed high-pressure rivers reentrant enter into nozzle 4 earlier through the spiral guide way, rivers have certain rotation acceleration effect under the effect of spiral guide way, then get into first bell mouth 41, first bell mouth 41 structure itself has the effect of pressure boost acceleration rate, can further increase the pressure and the speed of rivers, the rivers that further pressure boost acceleration rate pass through second cone hole 42 before the nozzle blowout, convert partial kinetic energy into pressure energy, through cone structure hole blowout pressure water film, high-speed pressure water film contacts with the air after, through the combined action breakage with the air into the little water smoke of droplet diameter, in order to reach the effect of spraying fire extinguishing.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. The utility model provides a be applied to open water mist nozzle of combination formula pressure whirl of large-scale mail steamer which characterized in that includes:
the connecting part comprises a first cylinder part, a second cylinder part and a third cylinder part which are fixedly connected in sequence and are hollow, an axial through hole for water to flow through is formed in the connecting part after the first cylinder part, the second cylinder part and the third cylinder part which are hollow are connected, the second cylinder part is detachably connected to a high-pressure water pipe, the diameter of the first cylinder part is smaller than that of the second cylinder part, and a plurality of inclined holes for water to enter are formed in the side wall of the first cylinder part;
the filter screen cylinder is provided with a plurality of filter holes and is reversely buckled on the first cylinder part in a tight fit mode so as to cover the first cylinder part on the inner side of the first cylinder part;
the nozzle base is detachably connected with the third barrel part, a cavity communicated with the axial through hole is formed in the nozzle base, and a plurality of nozzle mounting holes communicated with the cavity are formed in the nozzle base; and
a plurality of nozzles, a plurality of nozzles are installed respectively correspondingly in a plurality of nozzle mounting holes, be provided with along its axial in the nozzle and be close to the first bell mouth of nozzle mounting hole and with first bell mouth is connected and is close to the second bell mouth of atmosphere end, the diameter of first bell mouth is along keeping away from the nozzle mounting hole reduces gradually, the diameter of second bell mouth is along keeping away from first bell mouth increases gradually.
2. The combined pressure-swirling open water mist nozzle for large mail steamer of claim 1, wherein the angle between the axis of the inclined hole and the cross section of the connecting part is 30-45 °.
3. The combined pressure swirl open water mist head for a large postal carrier of claim 1 wherein the first barrel portion is provided with two angled holes which are symmetrical about a diameter of the first barrel portion.
4. The combined pressure-swirling open water mist head for use in a large postal carrier as claimed in claim 1, wherein the second cylindrical portion is threadedly connected to the high pressure water pipe.
5. The combined pressure cyclone open water mist sprayer applied to large-scale mail steamer of claim 1, wherein the nozzle base is provided with a mounting boss, the nozzle mounting hole is arranged in the mounting boss, and the nozzle is connected with the nozzle mounting hole through screw thread.
6. The combined pressure swirl open water mist head for a large postal carrier of claim 1 wherein the angle between the axis of the nozzle mounting hole and the axis of the nozzle base is 45 °.
7. The combined pressure swirling open water mist head for large mail steamer of claim 1, wherein the inner side wall of the nozzle near the nozzle mounting hole is provided with a spiral guide groove for guiding water flow, and the spiral guide groove is located at the end side of the first taper hole far from the second taper hole.
8. The combined pressure swirl open water mist head for a large postal carrier of claim 1 wherein the third barrel portion is threadably connected to the nozzle base.
9. The combined pressure swirl open water mist head for a large postal carrier of claim 1 wherein the first conical hole and the second conical hole both have a central angle of 30 °.
10. The combined pressure-swirling open water mist head as claimed in claim 1, wherein the connecting part, the filter screen cylinder, the nozzle base and the nozzles are made of erosion-resistant stainless steel material, and the surface thereof is treated with chrome-nickel plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911051014.5A CN111001107A (en) | 2019-10-31 | 2019-10-31 | Combined pressure rotational flow open type water mist spray head applied to large-scale passenger liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911051014.5A CN111001107A (en) | 2019-10-31 | 2019-10-31 | Combined pressure rotational flow open type water mist spray head applied to large-scale passenger liner |
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| Publication Number | Publication Date |
|---|---|
| CN111001107A true CN111001107A (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911051014.5A Pending CN111001107A (en) | 2019-10-31 | 2019-10-31 | Combined pressure rotational flow open type water mist spray head applied to large-scale passenger liner |
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| CN (1) | CN111001107A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790533A (en) * | 2020-07-11 | 2020-10-20 | 江苏华淼电子科技有限公司 | Multi-rotary-head atomization cover plate |
| CN112718699A (en) * | 2020-12-15 | 2021-04-30 | 广西机电技师学院 | Olive-shaped multi-outlet self-balancing airflow pressure speed-increasing dust-removing structure and method |
| CN115193601A (en) * | 2022-06-29 | 2022-10-18 | 朝阳燕山湖发电有限公司 | Spraying equipment for heat conduction ceramic coating |
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| WO2007113483A1 (en) * | 2006-03-30 | 2007-10-11 | Watermist Limited | Spray nozzle primarily for fire protection |
| CN202761952U (en) * | 2012-07-26 | 2013-03-06 | 合肥科大立安安全技术股份有限公司 | Fine water mist sprayer |
| CN103405873A (en) * | 2013-07-17 | 2013-11-27 | 西华大学 | Combined fine water mist sprinkler head |
| CN206183840U (en) * | 2016-10-17 | 2017-05-24 | 九江中船长安消防设备有限公司 | Open water mist nozzle |
| CN206950516U (en) * | 2016-12-16 | 2018-02-02 | 南京消防器材股份有限公司 | A kind of water mist fire-extinguishing nozzle |
-
2019
- 2019-10-31 CN CN201911051014.5A patent/CN111001107A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007113483A1 (en) * | 2006-03-30 | 2007-10-11 | Watermist Limited | Spray nozzle primarily for fire protection |
| CN202761952U (en) * | 2012-07-26 | 2013-03-06 | 合肥科大立安安全技术股份有限公司 | Fine water mist sprayer |
| CN103405873A (en) * | 2013-07-17 | 2013-11-27 | 西华大学 | Combined fine water mist sprinkler head |
| CN206183840U (en) * | 2016-10-17 | 2017-05-24 | 九江中船长安消防设备有限公司 | Open water mist nozzle |
| CN206950516U (en) * | 2016-12-16 | 2018-02-02 | 南京消防器材股份有限公司 | A kind of water mist fire-extinguishing nozzle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111790533A (en) * | 2020-07-11 | 2020-10-20 | 江苏华淼电子科技有限公司 | Multi-rotary-head atomization cover plate |
| CN112718699A (en) * | 2020-12-15 | 2021-04-30 | 广西机电技师学院 | Olive-shaped multi-outlet self-balancing airflow pressure speed-increasing dust-removing structure and method |
| CN115193601A (en) * | 2022-06-29 | 2022-10-18 | 朝阳燕山湖发电有限公司 | Spraying equipment for heat conduction ceramic coating |
| CN115193601B (en) * | 2022-06-29 | 2024-03-29 | 朝阳燕山湖发电有限公司 | Spraying equipment for thermal conductive ceramic coating |
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Application publication date: 20200414 |