CN106890416B - A kind of middle straightening penetrates atomized fine water fog nozzle and middle pressure fine mist spray head - Google Patents
A kind of middle straightening penetrates atomized fine water fog nozzle and middle pressure fine mist spray head Download PDFInfo
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- CN106890416B CN106890416B CN201710258570.4A CN201710258570A CN106890416B CN 106890416 B CN106890416 B CN 106890416B CN 201710258570 A CN201710258570 A CN 201710258570A CN 106890416 B CN106890416 B CN 106890416B
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- water fog
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000007921 spray Substances 0.000 title claims abstract description 62
- 239000003595 mist Substances 0.000 title claims description 25
- 230000008602 contraction Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 5
- 238000000889 atomisation Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- 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
-
- 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
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a kind of middle straightening to penetrate atomized fine water fog nozzle, the inner chamber of the nozzle includes spout and cylindrical spray orifice, the water side of the spout is provided with a taper contraction section, the spray orifice is located at the water side of the taper contraction section, the convergency of taper contraction section is 30 120 °, a diameter of 0.3 1.0mm of spray orifice, the length of spray orifice is 0.02 1mm.Spray orifice length of the invention using the streamlined orifice design of taper, 30 ° 120 ° of nozzle convergency and 0.02 1mm, it is not only convenient for processing, and be advantageous to reduce the resistance of water, and current can be produced with good contraction, to reduce water droplet diameter, droplet axial direction kinetic energy is improved, and then lifts the wind-proof performance of water mists.
Description
Technical field
The present invention relates to a kind of middle straightening to penetrate atomized fine water fog nozzle and fine mist spray head, is adapted to out of doors have under wind operating mode
Using atomizing effect is good, is not easily blocked, and atomization cone angle is larger, and has very strong wind-proof performance.
Background technology
According to standard GB/T/T 26785-2011 regulation, water mists refer to Dv99（Percent by volume is 99% grain
Footpath）Water smoke drop less than 400 μm.Water mists can increase the surface area of per unit volume liquid by being atomized, and improve heat absorption effect
Rate, lift fire-fighting efficiency.Now, Water Mist Fire Extinguishing Technique has been widely used in put out a fire to save life and property A classes, B classes, C classes and electrical fire, bag
Include between library, archives, plant room, high and low voltage electric distribution, factory's control room, computer and communication machine room, cable interlayer
With the place such as cable tunnel.
The hydraulic pressure occurring mode of water mists is mainly two kinds, first, direct projection is atomized, second, swirling flow atomizing.Wherein direct projection is atomized
The axial momentum of technology is larger, so capability of anti-wind is strong, can apply out of doors, and is not easily blocked, but direct projection mist now
Change nozzle structure not optimized effectively, realize water mists effect（Fogdrop diameter is less than 400 μm）Pressure requirements it is higher, lead to
Often in more than 8Mpa.Therefore, the application cost of direct projection atomization technique is high, less economical.In addition, direct projection atomization technique also has one
It is that atomization cone angle is smaller using shortcoming so that the protected area of single-nozzle is smaller.By contrast, the economy of swirling flow atomizing technology
Property it is more preferable, now using more extensive, technology develops also more comprehensively.Current are centrifuged mist by it by the centrifugation cone in spray orifice
Change, the water mists of water can be realized in the range of middle high-pressure.But the droplet of water mists caused by swirling flow atomizing is axially dynamic
Can be smaller, it is easier to be blown to four winds, causes fire-fighting efficiency to reduce during outdoor use, or even lose extinguishing effect, it is difficult to out of doors
To application.
Due to using under high pressure, direct projection atomized fine water fog nozzle arrangements now are very simple, i.e., in the flat of Metallic Nozzle At The Ingot
Drill straight footpath is less than 2 mm straight hole on face or cambered surface.The working pressure range of the shower nozzle need to generally reach 8-16Mpa.Using table
Bright, such nozzle can realize good atomizing effect under high pressure, but in the range of middle pressure（1.25-3.5MPa）Atomization effect
Fruit is poor, it is impossible to reaches water mists standard requirement of the fogdrop diameter less than 400 μm.
Therefore, need exploitation to can reach the direct projection atomizer of water mists requirement in the range of middle pressure now, realize thin water
The outdoor application of mist.
The content of the invention
The technical problem to be solved in the present invention is overcome the deficiencies in the prior art, there is provided a kind of simple in construction, middle pressure scope
Atomization effect is good, can realize in press water mists outdoor application middle straightening penetrate atomized fine water fog nozzle and it is middle pressure water mists spray
Head.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of middle straightening penetrates atomized fine water fog nozzle, and the inner chamber of the nozzle includes spout and cylindrical spray orifice, the spray
The water side of mouth is provided with a taper contraction section, and the spray orifice is located at the water side of the taper contraction section, the receipts of taper contraction section
Angle is held back as 30 ° -120 °, a diameter of 0.3-1.0mm of spray orifice, the length of spray orifice is 0.02-1mm.
Further improvement as above-mentioned technical proposal：
Preferably, the taper contraction section is conical contraction section, and its convergency is 45 ° -100 °；The diameter of the spray orifice
For 0.4-0.7mm, length 0.03-0.07mm.
Preferably, it is provided with the cylinder shape groove coaxial with spray orifice in the water side of spray orifice on the nozzle or cone is recessed
Groove, the aperture of the cylinder shape groove is 3mm, deep 1 mm；The coning angle of the cone-shaped groove is 60 °.
Preferably, the length L of the nozzle is 15mm, and the water inlet end diameter D of the spout is 6mm.
Preferably, the nozzle is made of 0Cr18Ni9.
Preferably, the nozzle uses hydraulic pressure to be sprayed for 2.0-3.5Mpa middle pressure water through spout from spray orifice.
Preferably, the hydraulic pressure of medium pressure water is 2.8-3.5MPa.
As same inventive concept, the present invention, which also provides, presses fine mist spray head in one kind, including hexagonal structure
Showerhead housing, set on the showerhead housing it is multiple it is as described above in straightenings penetrate atomized fine water fog nozzle,
One of nozzle is arranged at the axial forward end of showerhead housing, and other nozzles are uniformly arranged on showerhead housing
Lateral surrounding；Inner chamber of the inner chamber of multiple nozzles with showerhead housing connects.
Preferably, in above-mentioned middle pressure fine mist spray head, multiple nozzles are connected through a screw thread mode and detachably connected
It is connected on the showerhead housing.
Preferably, in above-mentioned middle pressure fine mist spray head, multiple nozzles are arranged at institute by way of overall processing
State on showerhead housing.
The above-mentioned technical proposal of the present invention is proposed based on following design principle：
The atomization characteristics parameter of water mists mainly includes fogdrop diameter, atomization cone angle, droplet axial direction kinetic energy etc..Pass through research
It was found that influenceing the factor of these three water mists atomization characteristics parameters mainly includes：Hydraulic pressure, nozzle contraction section contraction shape and its
Convergency, injection diameter, spray orifice length etc..
Wherein, hydraulic pressure is the biggest factor for influenceing atomization characteristics, and hydraulic pressure is higher, and fogdrop diameter is smaller, and atomization cone angle is bigger,
Droplet axial momentum is higher, therefore capability of anti-wind is better.High-pressure fine water mist fire-extinguishing system now uses plunger pump, and 8- can be achieved
16Mpa high pressure, but application cost is high；Middle pressure fine water mist fire-extinguishing system uses centrifugal multistage pump multiple centrifugal pump, and pressure is usually 1.5-
3.5Mpa, but application cost significantly reduces.The present invention wish realize in press scope under direct projection atomization, therefore use hydraulic pressure for
2.0-3.5Mpa centrifugal multistage pump multiple centrifugal pump.
In the range of 2.0-3.5Mpa middle pressure water, contraction shape and its convergence of the invention by changing nozzle contraction section
Angle, injection diameter, spray orifice length, to press the water mists atomizing effect under scope in improving, wherein：
Fairshaped nozzle contraction shape is advantageous to reduce water resistance, reduces water droplet diameter, and it is axially dynamic to improve droplet
Can, and then lift the wind-proof performance of water mists；
Appropriate nozzle convergency can produce contraction to current, reduce fogdrop diameter and strengthen droplet axial direction kinetic energy,
Lift droplet wind-proof performance.And too small or excessive nozzle convergency increases fogdrop diameter, droplet axial momentum reduces, most
The wind-proof performance of the low water mists of final decline；
The reduction of injection diameter advantageously reduces fogdrop diameter, but can increase current ejection resistance, reduce water-carrying capacity and
Droplet axial direction kinetic energy, and then total extinguishing ability and wind-proof performance are reduced, therefore an optimal injection diameter scope be present；
The reduction of spray orifice length will reduce the fogdrop diameter of droplet, increase atomization cone angle, lifting droplet axial direction kinetic energy.But
It is that too short spray orifice length will make orifice edge too thin, tolerance hydraulic pressure not enough damages spray orifice, finally makes droplet atomization characteristics
Deteriorate.Therefore, it is necessary to which nozzle material selects shorter spray orifice length within 2.0-3.5Mpa voltage endurance capability scope.
To sum up, the present invention designs in terms of the structure and its parameter of adjustment nozzle, the atomization effect of lifting direct projection atomizer
Fruit, increase the atomization cone angle and droplet axial direction kinetic energy of water mists.
Compared with prior art, the advantage of the invention is that：
1st, middle straightening of the invention penetrates atomized fine water fog nozzle, using the streamlined orifice design of taper, is not only convenient for adding
Work, and be advantageous to reduce the resistance of water, water droplet diameter is reduced, improves droplet axial direction kinetic energy, and then lift water mists
Wind-proof performance.
2nd, middle straightening of the invention penetrates atomized fine water fog nozzle, and using the nozzle convergency of 30-120 degree, current can be produced
Raw good contraction, can reduce fogdrop diameter and strengthen droplet axial direction kinetic energy, lift droplet wind-proof performance.
3rd, middle straightening of the invention penetrates atomized fine water fog nozzle, using 0.02-1mm spray orifice length, can reduce droplet
Fogdrop diameter, increase atomization cone angle, lifting droplet axial direction kinetic energy, strengthen droplet wind-proof performance.
4th, middle pressure fine mist spray head of the invention, sets multiple middle straightenings of the invention to penetrate mist on showerhead housing
Change mist-generating nozzle, and one of nozzle is arranged at the axial forward end of showerhead housing, other nozzles are uniformly arranged on
The lateral surrounding of showerhead housing, in the range of middle pressure（1.25-3.5MPa）Atomizing effect it is more satisfactory, mist can be reached
Water mists standard requirement of the diameter less than 400 μm is dripped, wind-proof performance is strong.
To sum up, middle straightening of the invention penetrates mist-generating nozzle and shower nozzle, have it is simple in construction, water mists pressure is low, mist
Change the advantages that cone angle is big, wind-proof performance is strong.
Brief description of the drawings
Fig. 1 is that the middle straightening of the embodiment of the present invention 1 penetrates the structural representation one of mist-generating nozzle（Spray orifice water side is provided with circle
Cylindrical groove）.
Fig. 2 is that the middle straightening of the embodiment of the present invention 1 penetrates the structural representation two of mist-generating nozzle（Spray orifice water side is provided with circle
Conical socket）.
Fig. 3 is the main structure diagram of the middle pressure fine mist spray head of the embodiment of the present invention 1.
Fig. 4 is the overlooking the structure diagram of the middle pressure fine mist spray head of the embodiment of the present invention 1.
Fig. 5 is that the middle straightening of the embodiment of the present invention 2 penetrates the structural representation of mist-generating nozzle.
Fig. 6 is the main structure diagram of the middle pressure fine mist spray head of the embodiment of the present invention 2.
Fig. 7 is the overlooking the structure diagram of the middle pressure fine mist spray head of the embodiment of the present invention 2.
Marginal data：
1st, nozzle；2nd, spout；21st, taper contraction section；3rd, spray orifice；4th, groove；5th, nozzle housing.
Embodiment
For the ease of understanding the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
Embodiment 1
Referring to Fig. 1 and Fig. 2, middle straightening of the invention penetrates atomized fine water fog nozzle 1, is not less than Ovshinsky using decay resistance
The metal material of stainless steel is made（It is preferred that it is made up of 0Cr18Ni9）.Its length L is 15mm, and inner chamber includes spout 2 and cylinder
Spray orifice 3, the water inlet end diameter D of spout 2 is 6mm, and water side is provided with a taper contraction section 21, and spray orifice 3 is located at taper contraction section 21
Water side, the convergency of taper contraction section 21 is 30 ° -120 °（Preferably 45 ° -100 °）, a diameter of 0.3- of spray orifice 3
1.0mm（Preferably 0.4-0.7mm）, the length of spray orifice 3 is 0.02-1mm（Preferably 0.03-0.07 mm）.In spray on nozzle 1
The water side in hole 3 is provided with the groove 4 coaxial with spray orifice 3（Cylinder or cone）, the wherein aperture of cylinder shape groove 4 is 3mm,
Deep 1 mm；The coning angle of cone-shaped groove 4 is 60 °.The nozzle of the present invention uses hydraulic pressure as 2.0-3.5Mpa（Preferably 2.8-
3.5MPa）Middle pressure water sprayed through spout 2 from spray orifice 3.The present invention nozzle, using the streamlined orifice design of taper,
30 ° -120 ° of nozzle convergency and 0.02-1mm spray orifice length, are not only convenient for processing, and are advantageous to reduce the resistance of water
Power, and current can be produced with good contraction, to reduce water droplet diameter, improve droplet axial direction kinetic energy, Jin Erti
Rise the wind-proof performance of water mists.
In the present embodiment, taper contraction section 21 is 60 ° in cone, convergency, is easy to be machined.Spray orifice 3 is cylinder
Shape, a diameter of 0.7mm of spray orifice 3, the length of spray orifice 3 is 0.04mm.
As Figure 3-Figure 4, middle pressure fine mist spray head of the invention, using the showerhead housing of hexagonal structure
5, it is made of stainless steel, straightening penetrates atomized fine water fog nozzle 1 in showerhead housing 5 arranged beneath, 7 identicals, wherein
One nozzle 1 is threadingly attached to the axial forward end of showerhead housing 5, and other 6 nozzles 1 are connected through a screw thread mode
It is uniformly arranged on the lateral surrounding of showerhead housing 5；The inner chamber of 7 nozzles 1 connects with the inner chamber of showerhead housing 5
It is logical.The shower nozzle of the present invention can spray fogdrop diameter and be less than 400 μm of water mists, simple in construction, water mists pressure is low, windproof
Energy is strong, is not easily blocked, and is suitably applied the outdoor popularization and application of water mists.
Embodiment 2
As shown in figure 5, the middle straightening in the present embodiment penetrates atomized fine water fog nozzle 1, in its primary structure and embodiment 1
Nozzle 1 provided with cone-shaped groove is identical, differs only in and is not provided with thread segment on nozzle 1, is by way of overall processing
It is connected with nozzle housing 5.
Referring to Fig. 6 and Fig. 7, the middle pressure fine mist spray head of the present embodiment, it is made of stainless steel, using hexagonal structure
Showerhead housing 5, facilitate the installation of nozzle 1.Overall processing is pressed in having 7 identicals below the showerhead housing 5
Direct projection atomized fine water fog nozzle 1, one of nozzle 1 are located at the axial forward end of showerhead housing 5, and other 6 nozzles 1 are equal
The even lateral surrounding for being arranged at showerhead housing 5；The inner chamber of 7 nozzles 1 connects with the inner chamber of showerhead housing 5
It is logical.
The shower nozzle of the present invention can spray fogdrop diameter and be less than 400 μm of water mists, it is simple in construction, water mists pressure is low,
Wind-proof performance is strong, is not easily blocked, and is suitably applied the outdoor popularization and application of water mists.
Claims (9)
1. a kind of middle straightening penetrates atomized fine water fog nozzle, it is characterised in that：The inner chamber of the nozzle includes spout and cylinder is sprayed
Hole, the water side of the spout are provided with a conical contraction section, and the spray orifice is located at the water side of the conical contraction section, circle
The convergency of taper contraction section is 45-100 °, a diameter of 0.4-0.7mm of spray orifice, and the length of spray orifice is 0.03-0.07mm；Institute
State and be provided with the cylinder shape groove or cone-shaped groove coaxial with spray orifice in the water side of spray orifice on nozzle.
2. middle straightening according to claim 1 penetrates atomized fine water fog nozzle, it is characterised in that：The hole of the cylinder shape groove
Footpath is 3mm, deep 1 mm；The coning angle of the cone-shaped groove is 60 °.
3. middle straightening according to claim 1 penetrates atomized fine water fog nozzle, it is characterised in that：The length L of the nozzle is
15mm, the water inlet end diameter D of the spout is 6mm.
4. middle straightening according to claim 1 penetrates atomized fine water fog nozzle, it is characterised in that：The nozzle uses
0Cr18Ni9 is made.
5. middle straightening according to claim 1 penetrates atomized fine water fog nozzle, it is characterised in that：The nozzle use hydraulic pressure for
2.0-3.5Mpa middle pressure water sprays through spout from spray orifice.
6. middle straightening according to claim 5 penetrates atomized fine water fog nozzle, it is characterised in that：The hydraulic pressure of medium pressure water is
2.8-3.5MPa。
7. pressing fine mist spray head in one kind, include the showerhead housing of hexagonal structure, it is characterised in that：The seedpod of the lotus
Multiple middle straightenings as described in claim any one of 1-6 are set to penetrate atomized fine water fog nozzle on formula nozzle housing, one of them
Nozzle is arranged at the axial forward end of showerhead housing, and other nozzles are uniformly arranged on lateral the four of showerhead housing
Week；Inner chamber of the inner chamber of multiple nozzles with showerhead housing connects.
8. middle pressure fine mist spray head according to claim 7, it is characterised in that：Multiple nozzles are connected through a screw thread
Mode is removably connected on the showerhead housing.
9. middle pressure fine mist spray head according to claim 7, it is characterised in that：Multiple nozzles pass through overall processing
Mode is arranged on the showerhead housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258570.4A CN106890416B (en) | 2017-04-19 | 2017-04-19 | A kind of middle straightening penetrates atomized fine water fog nozzle and middle pressure fine mist spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258570.4A CN106890416B (en) | 2017-04-19 | 2017-04-19 | A kind of middle straightening penetrates atomized fine water fog nozzle and middle pressure fine mist spray head |
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| Publication Number | Publication Date |
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| CN106890416A CN106890416A (en) | 2017-06-27 |
| CN106890416B true CN106890416B (en) | 2018-01-12 |
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| CN109534269A (en) * | 2017-09-21 | 2019-03-29 | 佛山市顺德区美的饮水机制造有限公司 | Soda water pot and Soda water machine |
| CN107570330A (en) * | 2017-10-31 | 2018-01-12 | 华中科技大学 | A kind of antipollution high-pressure fine water mist nozzle |
| CN108371771A (en) * | 2018-05-17 | 2018-08-07 | 陕西安益机电有限公司 | A kind of fire demand water mist type nozzle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7207498B1 (en) * | 2000-01-26 | 2007-04-24 | Dl Technology, Llc | Fluid dispense tips |
| US20070023546A1 (en) * | 2005-08-01 | 2007-02-01 | Chih-Min Yu | Nozzle structure for a high-pressure spray head |
| CN102698396B (en) * | 2012-05-08 | 2014-04-30 | 西华大学 | Water mist sprayer |
| CN103405873A (en) * | 2013-07-17 | 2013-11-27 | 西华大学 | Combined fine water mist sprinkler head |
| CN104492011A (en) * | 2014-12-31 | 2015-04-08 | 西华大学 | Multi-nozzle water mist spray head |
| CN104906730B (en) * | 2015-06-02 | 2016-06-08 | 国家电网公司 | A kind of double atomization shower nozzle being applicable to transmission line forest fire fire extinguishing |
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