CN106730551A - A kind of froth fire extinguishing system - Google Patents
A kind of froth fire extinguishing system Download PDFInfo
- Publication number
- CN106730551A CN106730551A CN201710015681.2A CN201710015681A CN106730551A CN 106730551 A CN106730551 A CN 106730551A CN 201710015681 A CN201710015681 A CN 201710015681A CN 106730551 A CN106730551 A CN 106730551A
- Authority
- CN
- China
- Prior art keywords
- fire
- valve
- foam
- water
- pipe
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
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 provides a kind of froth fire extinguishing system, one proportioner is installed in the port of export of the valve that drenches with rain, it is connected with foam solution inlet tube in the foam solution input of proportioner, fire water is extracted out by fire pump from fire water supply, and break-make control is carried out by the valve that drenches with rain, foam solution is extracted out by foam pump from concentrated tank, and break-make control is carried out by foam liquid electromagnetic valve, when a fire, drench with rain valve and foam liquid electromagnetic valve can be opened rapidly after the startup electric signal that Fire extinguisher sends is received, fire water and foam solution form AFFF mixed liquor after proportioner, and blended liquid outlet is conveyed to pipe network, the AFFF mixed liquor of both certainty ratios is provided to system pipe network.It is an advantage of the invention that compact conformation, applicable pressure, range of flow extensively, can rapidly be opened and to pipe network offer AFFF mixed liquor, spray foam to protection zone by special foam nozzle and stamp out a fire when a fire.
Description
Technical field
The invention belongs to fire-fighting fire extinguishing field, more particularly to a kind of froth fire extinguishing system.
Background technology
Tunnel fire hazard is mainly the A classes fire such as the B classes such as gasoline fire, rubber and AB classes mixing fire, is adopted in conventional tunnel
Fixed extinguishing system is water spray extinguishing system, and water spray control valve group is installed in tunnel.Water spray control valve group
Mainly it is made up of water supply side Signal butterfly bamper, the valve that drenches with rain, system side Signal butterfly bamper, casing etc., is receiving Fire Alarm Controller
Enabling signal after can open immediately, provide press water to pipe network, by the special waterfog head in tunnel to spraying water smoke in tunnel,
Control action can only be acted as to tunnel fire hazard, it is impossible to effectively put out a fire.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of foam fire-fighting system for effectively putting out tunnel fire hazard
System.
In order to solve the above-mentioned technical problem, the invention provides a kind of froth fire extinguishing system, it includes foam liquid tank, bubble
Foam liquid delivery main, fire water supply, fire water delivery main, mixed liquor delivery main, at least one foam spray control valve group
Case and at least one extinguishing device, the foam spray control valve group case include casing, are arranged at drenching with rain in the casing
Valve, proportioner, fire water inlet tube, foam solution inlet tube, mixture export pipe, warning water system water inlet pipe, warning water system
And drainpipe；
The foam liquid tank is connected with the foam solution input of the foam solution delivery main, and the foam solution conveying is total
Foam pump is provided with pipe, the foam solution inlet tube of each foam spray control valve group case is defeated with the foam solution respectively
The foam solution output end of house steward is sent to connect；
The fire water supply is connected with the fire water input of the fire water delivery main, the fire water delivery main
On be provided with fire pump, the fire water inlet tube of each foam spray control valve group case is conveyed with the fire water respectively
The fire water output end connection of house steward；
The valve that drenches with rain is provided with intake chamber, superposed water outlet chamber and the pressure chamber positioned at sidepiece positioned at bottom
Room, the water inlet chamber is connected with the fire water inlet tube, and water supply side Signal butterfly bamper is provided with the fire water inlet tube,
The water outlet chamber is connected with the fire water input of the proportioner, and the foam solution inlet tube and the ratio mix
The foam solution input connection of device, is provided with foam solution ball valve, foam solution pressure gauge, the first filtering on the foam solution inlet tube
Device, foam liquid electromagnetic valve, balanced valve and first check-valve, the mixture export pipe are defeated with the mixed liquor of the proportioner
Go out end connection, system side Signal butterfly bamper is provided with the mixture export pipe；
The ft connection of the fire water inlet tube has the first outlet pipe, and the second filtering is provided with first outlet pipe
Device, fire water pressure table and second check-valve, are communicated between the end of first outlet pipe and the pressure chamber and drench with rain
Valve opening assembly, the valve opening assembly that drenches with rain includes four-way union, the first tee pipe coupling, the second tee pipe coupling, rain
Drench valve opens solenoid valve, the manually opened ball valve of the valve that drenches with rain and anti-reset valve, the first joint of the four-way union and described the
The end connection of one outlet pipe, the second joint of the four-way union passes through pipeline and the first of first tee pipe coupling
Fittings, the 3rd joint of the four-way union passes through the first fittings of pipeline and second tee pipe coupling,
Second joint of first tee pipe coupling is connected by pipeline with the pressure chamber, and the of first tee pipe coupling
Three joints are connected by pipeline with the upper pressure chamber of the anti-reset valve, and the second joint of second tee pipe coupling passes through
Parallel pipeline drenches with rain valve opens solenoid valve and the manually opened ball valve of the valve that drenches with rain is connected, second tee pipe coupling with described respectively
The 3rd joint connected with the low pressure chamber of the anti-reset valve by pipeline；
The ft connection of the water outlet chamber has the second outlet pipe, and being provided with first on second outlet pipe goes out water polo
Valve, second outlet pipe is connected with the water inlet end of the warning water system water inlet pipe, is provided with the warning water system water inlet pipe
3rd filter, pressure switch and warning water system water intake ball valve, water side and the waterpower of the warning water system water inlet pipe are warned
The fire water input connection of bell, the fire water output end of the warning water system is connected with the drainpipe；
The mixture export pipe of each foam spray control valve group case is mixed with the mixed liquor delivery main respectively
The connection of liquid input is closed, mixed liquor output end of each extinguishing device respectively with the mixed liquor delivery main is connected, often
Extinguishing device described in one corresponds to a protection zone and is connected with least one foam nozzle respectively.
Used as preferred embodiments of the present invention, the mixed liquor between the system side Signal butterfly bamper and the proportioner goes out
Debugging pipe is communicated with mouth pipe, debugging hook gauge is provided with the debugging pipe with debugging pipe ball valve, the end of the debugging pipe
End connects with the drainpipe.
Used as preferred embodiments of the present invention, the 4th joint of the four-way union passes through pipeline and the foam solution import
Pipe is connected, and cleaning ball valve is provided with the pipeline.
Used as preferred embodiments of the present invention, the ft connection of the water inlet chamber has the 3rd outlet pipe, the 3rd water outlet
The second water outlet ball valve is provided with pipe, the 3rd outlet pipe is connected with the water inlet end of the warning water system water inlet pipe.
As preferred embodiments of the present invention, the foam nozzle include main body, the first ejection head unit, the second ejection head unit,
3rd ejection head unit and the 4th ejection head unit, the main body are the cylinder with hollow cavity, and the upper end of the main body is provided with
The pipe joint communicated with the hollow cavity, lower end closed offers 4 in circumferentially equidistant point on the excircle of the main body
The spray-head interface of cloth, first ejection head unit, the second ejection head unit, the 3rd ejection head unit and the 4th ejection head unit are sequentially connected
Communicated on 4 spray-head interfaces and with the hollow cavity of the main body, first ejection head unit, the second ejection head unit,
Diagonally downward, first ejection head unit and the 3rd ejection head unit are the injection direction of the 3rd ejection head unit and the 4th ejection head unit
Short range shower nozzle, second ejection head unit and the 4th ejection head unit are long-range shower nozzle.
As preferred embodiments of the present invention, in the extended line of the injection direction of first ejection head unit and the main body
The angle that heart line is formed is 60 degree~75 degree, the extended line of the injection direction of second ejection head unit and the center of the main body
The angle that line is formed is 60 degree~75 degree, the extended line of the injection direction of the 3rd ejection head unit and the center line of the main body
The angle of formation is 60 degree~75 degree, and the extended line of the injection direction of the 4th ejection head unit is linear with the center of the main body
Into angle be 60 degree~75 degree.
Used as preferred embodiments of the present invention, first ejection head unit and the 3rd ejection head unit are installed including short range shower nozzle
Body, short range sprayer body and short range shower nozzle helix core, the short range shower nozzle fixing body are weldingly fixed on the spray-head interface of the main body
On, the short range sprayer body is removably mounted on the short range shower nozzle fixing body, and the short range shower nozzle helix core is embedded in
In the short range sprayer body；Second ejection head unit and the 4th ejection head unit include long-range shower nozzle fixing body, long-range shower nozzle
Body and long-range shower nozzle helix core, the long-range shower nozzle fixing body are weldingly fixed on the spray-head interface of the main body, described long-range
Sprayer body is removably mounted on the long-range shower nozzle fixing body, and the long-range shower nozzle helix core is embedded in the long-range shower nozzle
In vivo.
Used as preferred embodiments of the present invention, the hollow cavity inwall of the main body is coated with screen pack.
Used as preferred embodiments of the present invention, the froth fire extinguishing system also includes Fire extinguisher, the Fire extinguisher
By signal cable or be wirelessly transferred respectively with foam pump, fire pump, water supply side Signal butterfly bamper, system side Signal butterfly bamper,
Foam liquid electromagnetic valve and the valve opens solenoid valve electrical connection that drenches with rain.
Used as preferred embodiments of the present invention, the froth fire extinguishing system also includes fire detector, emergency start-stop press-button, shows
Show device, control panel, illumination alert device, fire extinguishing indicator lamp and fire fighting linkage equipment, the Fire extinguisher passes through signal cable
Or be wirelessly transferred respectively with fire detector, emergency start-stop press-button, display, control panel, illumination alert device, fire extinguishing indicator lamp
Electrically connected with fire fighting linkage equipment.
Implement a kind of froth fire extinguishing system of the invention, compared with prior art, have the advantages that：
The present invention increases proportioner and foam solution conveyance conduit on the basis of raw water fire extinguishing system, is gone out as foam
Fiery system, can quickly and effectively be stamped out a fire using AFFF.Because AFFF is except with general fire foam
Effect outside, moreover it is possible to liquid, cooling comburant surface are separated out while comburant surface is wandering, and are formed on one layer of water
Film, comburant surface is closed with froth bed jointly, completely cuts off air, forms heat shield, while after heat is absorbed, vaporizing liquid
The oxygen content of dilute combustion thing superficial air, smothering action is produced to comburant, prevents comburant from continuing to heat up, burn.Therefore,
The present invention installs a proportioner in the port of export (i.e. water outlet chamber side) of the valve that drenches with rain, in the foam solution of proportioner
Input and foam solution inlet tube and foam solution ball valve thereon, foam solution pressure gauge, the first filter, foam liquid electromagnetic valve,
The foam solution conveyance conduit connection of balanced valve and first check-valve composition.Fire water is extracted out by fire pump from fire water supply,
And break-make control is carried out by the valve that drenches with rain, foam solution is extracted out by foam pump from concentrated tank, and is carried out by foam liquid electromagnetic valve
Break-make is controlled, and drenches with rain valve and foam liquid electromagnetic valve is in closed mode in system reserve state, when a fire, is drenched with rain
Valve and foam liquid electromagnetic valve can be opened rapidly after the startup electric signal that Fire extinguisher sends is received, and pressure switch is in rain
Drench while valve is opened and also open rapidly, warning water system alarm, fire water and foam solution form MJPZ after proportioner
Foam mixing liquid, and blended liquid outlet is conveyed to pipe network (i.e. mixed liquor delivery main and extinguishing device), to system pipe network
The AFFF mixed liquor of both certainty ratios is provided, spraying foam by special foam nozzle stamps out a fire.It can be seen that, implement this
The advantage of invention is compact conformation, and applicable pressure, range of flow extensively can rapidly be opened and provided to pipe network when a fire
AFFF mixed liquor, sprays foam and stamps out a fire by special foam nozzle to protection zone, is particularly suited for putting out tunnel
Road fire.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, will simply be situated between to the accompanying drawing of embodiment below
Continue.
Fig. 1 is a kind of schematic diagram of froth fire extinguishing system of the invention；
Fig. 2 is the schematic diagram of foam spray control valve group case；
Fig. 3 is the structural representation of foam spray control valve group case；
Fig. 4 is the side view of the a-quadrant part in structure shown in Fig. 3；
Fig. 5 is the side view of the B section components in structure shown in Fig. 3；
Fig. 6 is the profile of anti-reset valve；
Fig. 7 is the front view of foam nozzle；
Fig. 8 be in structure shown in Fig. 7 A-A to profile.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figures 1 to 5, the preferred embodiments of the present invention, a kind of froth fire extinguishing system, it includes foam liquid tank
100th, foam solution delivery main 200, fire water supply 300, fire water delivery main 400, mixed liquor delivery main 500, at least one
Individual foam spray control valve group case 600 and at least one extinguishing device 700, the foam spray control valve group case 600 include
Casing 601, the valve 602 that drenches with rain being arranged in the casing 601, proportioner 603, fire water inlet tube 604, foam solution enter
Mouth pipe 605, mixture export pipe 606, warning water system water inlet pipe 607, warning water system 608 and drainpipe 609.
The foam liquid tank 100 is connected with the foam solution input of the foam solution delivery main 200, the foam solution
Foam pump 201, the foam solution inlet tube 605 of each foam spray control valve group case 600 are provided with delivery main 200
The foam solution output end with the foam solution delivery main 200 is connected respectively；When foam pump 201 starts, from foam solution storage
Extract foam solution in tank 100 out and be delivered to foam spray control valve group case 600.
The fire water supply 300 is connected with the fire water input of the fire water delivery main 400, and the fire water is defeated
Send and fire pump 401 is provided with house steward 400,604 points of the fire water inlet tube of each foam spray control valve group case 600
Fire water output end not with the fire water delivery main 400 is connected；When fire pump 401 starts, from fire water supply 300
(such as：Fire cistern) in extract out and fire water and be delivered to foam spray control valve group case 600.
The valve 602 that drenches with rain is preferably diaphragm type and drenches with rain valve 602, and it is provided with water inlet chamber positioned at bottom, positioned at top
Water outlet chamber and the pressure chamber positioned at sidepiece, the water inlet chamber connects with the fire water inlet tube 604, the fire-fighting
It is provided with water supply side Signal butterfly bamper 610 on water inlet pipe 604, the fire water of the water outlet chamber and the proportioner 603
Input is connected, and the foam solution inlet tube 605 is connected with the foam solution input of the proportioner 603, the foam
Foam solution ball valve 611, foam solution pressure gauge 612, the first filter 613, foam liquid electromagnetic are disposed with liquid inlet tube 605
Valve 614, balanced valve 615 and first check-valve 616, the mixed liquor of the mixture export pipe 606 and the proportioner 603
Output end is connected, and system side Signal butterfly bamper 617 is provided with the mixture export pipe 606.Wherein, water supply side Signal butterfly bamper
610 are closed when open mode, maintenance or experiment are in system reserve or working condition, disappear for control manually
The break-make of waterproof inlet tube 604 simultaneously feeds back on off operating mode signal；System side Signal butterfly bamper 617 in system reserve or working condition at
In open mode, it is closed when maintenance or experiment, for controlling the break-make of mixture export pipe 606 manually and feeding back break-make
Status signal；Foam solution ball valve 611 is normally open, and pipeline is disconnected manually when being repaired for pipeline；Foam solution pressure gauge 612 is used
In the discharge pressure of real-time detection foam solution；First filter 613 is preferably y-type filter, for larger in filter foam liquid
Particulate matter, prevents system jams, the failure in downstream；Foam liquid electromagnetic valve 614 is closed in system reserve state,
Open mode is in during working state of system, it is preferably auto-manual valve, can be manually opened during without electricity, for manual or electric
The break-make of control mixture export pipe 606；Balanced valve 615 is used to balance foam hydraulic coupling and fire water pressure, it is ensured that enter ratio
The foam hydraulic coupling of blender and fire water pressure difference keep substantially constant, thus this foam proportioning unit foams mix
Than more stablizing；First check-valve 616 is used to prevent the foam solution in foam solution inlet tube 605 from flowing backwards.Also, it should be noted that
When the hydraulic pressure of pressure chamber is more than or equal to the hydraulic pressure of water inlet chamber, the barrier film in the valve 602 that drenches with rain is in sealing state, i.e. rain
Drench valve 602 to close, system is without normal direction pipe network water supply；When the hydraulic pressure of pressure chamber is less than the hydraulic pressure of water inlet chamber, drench with rain valve 602
In barrier film be in open mode, that is, the valve 602 that drenches with rain opens, and system is to pipe network water supply.Proportioner 603 is used for fire water
Mix by a certain percentage with foam solution.
The ft connection of the fire water inlet tube has the first outlet pipe 618, is set gradually on first outlet pipe 618
Have the second filter 619, fire water pressure table 620 and a second check-valve 621, the end of first outlet pipe 618 with it is described
The valve opening assembly that drenches with rain is communicated between pressure chamber, the valve opening assembly that drenches with rain includes four-way union 622, the first threeway
Pipe joint 623, the second tee pipe coupling 624, the valve opens solenoid valve 625 that drenches with rain, the manually opened ball valve 626 of the valve that drenches with rain and anti-reset
Valve 627, the first joint of the four-way union 622 is connected with the end of first outlet pipe 618, the four-way union
622 the second joint passes through the first fittings of pipeline and first tee pipe coupling 623, the four-way union 622
The 3rd joint the first fittings for passing through pipeline and second tee pipe coupling 624, first tee pipe coupling 623
The second joint connected with the pressure chamber by pipeline, the 3rd joint of first tee pipe coupling 623 passes through pipeline
Upper pressure chamber 627a with the anti-reset valve 627 is connected, and the second joint of second tee pipe coupling 624 is by parallel connection
Pipeline drenches with rain valve opens solenoid valve 625 and the manually opened ball valve 626 of the valve that drenches with rain is connected, second T joint with described respectively
First 624 the 3rd joint is connected by pipeline with the low pressure chamber 627b of the anti-reset valve 627.Wherein, the second filter
619 are preferably y-type filter, for filtering larger particles in fire water, prevent system jams, the failure in downstream；Fire water
Pressure gauge 620 is used for the discharge pressure of real-time detection fire water；During second check-valve 621 is used to prevent the first outlet pipe 618
Fire-fighting aqueous reflux；The valve opens solenoid valve 625 that drenches with rain is closed in system reserve state, in working state of system at
In open mode, drenched with rain valve opening assembly pipeline break-make for electrical control；The manually opened ball valve 626 of the valve that drenches with rain is in system reserve
It is closed during state, open mode is in working state of system, for controls the valve opening assembly pipe that drenches with rain manually
Road break-make, especially tackles the emergency when valve opens solenoid valve 625 that drenches with rain fails.When drench with rain valve opens solenoid valve 625 or
When the manually opened ball valve 626 of the valve that drenches with rain is opened, the hydraulic pressure in pressure chamber is released, when the hydraulic pressure of pressure chamber is less than water inlet
During the hydraulic pressure of chamber, the valve 602 that drenches with rain is opened, and system is to pipe network water supply.Anti- reset valve 627 is used to prevent the unlatching of valve 602 that drenches with rain
Afterwards because the valve 602 that drenches with rain that drench with rain valve opens solenoid valve 625 or the manually opened closing of ball valve 626 of the valve that drenches with rain cause is closed,
That is, as shown in fig. 6, when valve opens solenoid valve 625 is drenched with rain or the manually opened ball valve 626 of the valve that drenches with rain is closed, first goes out
Water pipe 618 continues to be supplied water to the valve opening assembly that drenches with rain, and at this moment the hydraulic pressure of the low pressure chamber 627b of anti-reset valve 627 is multiple more than anti-
The hydraulic pressure of the upper pressure chamber 627a of position valve 627, promotes valve element 627c to move up, and opens the pressure release passage of anti-reset valve 627
627d, the hydraulic pressure in the whole valve opening assembly that drenches with rain of release, so as to prevent barrier film from resetting, the valve 602 that prevents from drenching with rain is closed.
The ft connection of the water outlet chamber has the second outlet pipe 628, and being provided with first on second outlet pipe 628 goes out
Water polo valve 629, second outlet pipe 628 is connected with the water inlet end of the warning water system water inlet pipe 607, and the warning water system enters
The 3rd filter 630, pressure switch 631 and warning water system water intake ball valve 638, the waterpower police are disposed with water pipe 607
The water side of bell water inlet pipe 607 connects with the fire water input of the warning water system 608, the fire-fighting of the warning water system 608
Water output end is connected with the drainpipe 609.Wherein, the first water outlet ball valve 629 is in system reserve or working condition and beats
It is closed when open state, maintenance or experiment, for the control break-make of the second outlet pipe 628 manually；3rd filter 630 is excellent
Elect y-type filter as, for filtering larger particles in fire water, prevent the system in downstream (such as：Pressure switch 631 and water
Power alarm bell 608) block, fail；Pressure switch 631 is closed in system reserve state, in working state of system
In open mode, for automatically controlling the break-make of warning water system water inlet pipe 607 according to fire water pressure, it is ensured that warning water system
608 can Normal Alarm, while fireman can be allowed to predict fire water pressure situation in time；Warning water system water intake ball valve 638 exists
It is closed when open mode, maintenance or experiment are in when system reserve or working condition, for control waterpower police manually
The break-make of bell water inlet pipe 607.
In order that obtaining multiple protection zones can realize independent protective and fire extinguishing, each foam spray control valve group case
Mixed liquor input of the 600 mixture export pipe 606 respectively with the mixed liquor delivery main 500 is connected, each described to go out
Mixed liquor output end of the fiery device 700 respectively with the mixed liquor delivery main 500 is connected, 700 points of each extinguishing device
A protection zone and at least one foam nozzle 701 Dui Ying not be connected with.
In sum, the present invention increases proportioner 603 and foam solution delivery pipe on the basis of raw water fire extinguishing system
Road, as froth fire extinguishing system, can quickly and effectively be stamped out a fire using AFFF.Because AFFF is except with one
As fire foam effect outside, moreover it is possible to separate out liquid while comburant surface is wandering, cooling comburant surface, and at it
Upper formation water membrane, comburant surface is closed with froth bed jointly, completely cuts off air, forms heat shield, while absorbing heat
After amount, the oxygen content of vaporizing liquid dilute combustion thing superficial air produces smothering action to comburant, prevents comburant from continuing to rise
Temperature, burning.Therefore, the present invention installs a proportioner 603 in the port of export (i.e. water outlet chamber side) of the valve 602 that drenches with rain,
In foam solution input and the foam solution inlet tube 605 and foam solution ball valve 611, foam hydraulic pressure thereon of proportioner 603
The foam solution of power table 612, the first filter 613, foam liquid electromagnetic valve 614, balanced valve 615 and first check-valve 616 composition is defeated
Pipeline is sent to connect.Fire water is extracted out by fire pump 401 from fire water supply 300, and carries out break-make control by the valve 602 that drenches with rain,
Foam solution is extracted out by foam pump 201 from concentrated tank, and carries out break-make control by foam liquid electromagnetic valve 614, and drench with rain valve 602
Closed mode is in system reserve state with foam liquid electromagnetic valve 614, when a fire, drench with rain valve 602 and foam
Liquid electromagnetic valve 614 can be opened rapidly after the startup electric signal that Fire extinguisher sends is received, and pressure switch 631 is drenching with rain
Valve 602 is also opened rapidly while unlatching, and warning water system 608 is alarmed, and fire water and foam solution are formed after proportioner 603
AFFF mixed liquor, and blended liquid outlet 606 is conveyed to pipe network (i.e. mixed liquor delivery main 500 and extinguishing device
700), the AFFF mixed liquor of both certainty ratios is provided to system pipe network, foam is sprayed by special foam nozzle 701 and is flutterred
Fire extinguishing calamity.
Also, it should be noted that mechanically having due to having carried out the valve 602 that drenches with rain, pressure switch 631 and warning water system 608
Sequence is controlled so that when a fire, the valve 602 that drenches with rain, pressure switch 631 and warning water system 608 are started rapidly successively, thus
Fireman can in time judge fire water pressure and the unlatching situation of valve 602 that drenches with rain according to the responsive state of warning water system 608.
It can be seen that, to implement it is an advantage of the invention that compact conformation, applicable pressure, range of flow are wide, when a fire can
It is rapid to open and provide AFFF mixed liquor to pipe network, foam is sprayed to protection zone by special foam nozzle 701 and is flutterred
Fire extinguishing calamity, is particularly suited for putting out tunnel fire hazard.
More preferably, in the present embodiment, froth fire extinguishing system is debugged and is overhauled for convenience, it is ensured that fire extinguishing system energy
It is enough to run well, connect on the mixture export pipe 606 between the system side Signal butterfly bamper 617 and the proportioner 603
Debugging pipe 632 is connected with, debugging hook gauge 633 and debugging pipe ball valve 634, the debugging pipe are provided with the debugging pipe 632
632 end connects with the drainpipe 609.Thus, when this froth fire extinguishing system needs to debug or overhaul, it is without opening
System side Signal butterfly bamper 617 can be carried out.
More preferably, in the present embodiment, the 4th joint of the four-way union 622 passes through pipeline and the foam solution import
Pipe 605 is connected, and cleaning ball valve 635 is provided with the pipeline, and the cleaning ball valve 635 is normally off, when manual ball valve 635 is opened
When, fire water can sequentially pass through the first outlet pipe 618, the 4th joint of four-way union 622 enters foam solution inlet tube 605
In, so as to be cleaned to remaining in the foam solution in foam solution inlet tube 605 and its downstream pipe, and adapted pipe 632, row
Water pipe 609 is discharged.
More preferably, in the present embodiment, the ft connection of the water inlet chamber has the 3rd outlet pipe 636, the 3rd water outlet
It is provided with the second water outlet ball valve 637 on pipe 636, the water inlet end of the 3rd outlet pipe 636 and the warning water system water inlet pipe 607
Connection.Wherein, the second water outlet ball valve 637 is closed in system reserve or working condition, overhauls or is in when testing
Open mode, for the control break-make of the 3rd outlet pipe 636 manually.Such design, can facilitate technician to open rain
Warning water system 608 is overhauled or tested when drenching valve 602.
More preferably, in the present embodiment, as shown in Figure 7 and Figure 8, the foam nozzle 701 includes main body 702, the first shower nozzle
Unit 703, the second ejection head unit 704, the 3rd ejection head unit 705 and the 4th ejection head unit 706, the main body 702 is with
The cylinder of cavity body 707, the upper end of the main body 702 is provided with the pipe joint communicated with the hollow cavity 707, lower end seal
Close, 4 spray-head interfaces in circumferentially equidistant distribution, first ejection head unit are offered on the excircle of the main body 702
703rd, the second ejection head unit 704, the 3rd ejection head unit 705 and the 4th ejection head unit 706 are connected to 4 spray-head interfaces in turn
Communicate above and with the hollow cavity 707 of the main body 702, first ejection head unit 703, the second ejection head unit the 704, the 3rd spray
The injection direction of the ejection head unit 706 of head unit 705 and the 4th diagonally downward, the shower nozzle list of first ejection head unit 703 and the 3rd
Unit 705 is short range shower nozzle, and the ejection head unit 706 of second ejection head unit 704 and the 4th is long-range shower nozzle.It can be seen that, the present embodiment
Foam nozzle 701, compared with prior art, have the advantages that all standing, non-blind area, atomizing effect are good；By using many
Individual ejection head unit sprays medium to multiple directions simultaneously, while can be by controlling the flow and jet length of adjacent ejection head unit
Flow and area coverage to realize whole shower nozzle is different, and whole shower nozzle ejection medium forms a square covering after going out
Scope, the two close foam nozzles 701 allowed in use reach all standing purpose in the absence of blind area, improve fire-fighting efficiency.
More preferably, in the present embodiment, in order to ensure the spraying effect of non-blind area, covering comprehensively, the outlet of ejection head unit sets
Certain angle is equipped with, allows medium to be sprayed by the angle for setting.Specifically, the injection of first ejection head unit 703
The angle that the extended line in direction is formed with the center line of the main body 702 is 60 degree~75 degree, second ejection head unit 704
The angle that the extended line of injection direction is formed with the center line of the main body 702 is 60 degree~75 degree, the 3rd ejection head unit
The angle that the extended line of 705 injection direction is formed with the center line of the main body 702 is 60 degree~75 degree, the 4th shower nozzle
The angle that the extended line of the injection direction of unit 706 is formed with the center line of the main body 702 is 60 degree~75 degree.
More preferably, in the present embodiment, the ejection head unit 705 of first ejection head unit 703 and the 3rd includes short range shower nozzle
Fixing body 708, short range sprayer body 709 and short range shower nozzle helix core 710, the short range shower nozzle fixing body 708 are weldingly fixed on institute
State on the spray-head interface of main body 702, the short range sprayer body 709 be for example connected through a screw thread mode be removably mounted on it is described
On short range shower nozzle fixing body 708, the short range shower nozzle helix core 710 is embedded in the short range sprayer body 709.Second spray
The ejection head unit 706 of head unit 704 and the 4th includes long-range shower nozzle fixing body 711, long-range sprayer body 712 and long-range shower nozzle spiral
Core 713, the long-range shower nozzle fixing body 711 is weldingly fixed on the spray-head interface of the main body 702, the long-range sprayer body
712 are for example connected through a screw thread mode is removably mounted on the long-range shower nozzle fixing body 711, the long-range shower nozzle spiral
Core 713 is embedded in the long-range sprayer body 712.Thus, by the detachable of short range sprayer body 709 and long-range sprayer body 712
Design, can according to actual needs change the shower nozzle of different ranges, to meet the spray requirement of different area coverages, improve practical
Property.Meanwhile, by the design of short range shower nozzle helix core 710 and long-range shower nozzle helix core 713, forced medium is in ejection head unit inward turning
Turn, increase the mutual shock between medium, so as to direct current mixed liquor in ejection head unit is changed into vaporific ejection, realize atomization spray
Drench, further improve fire-fighting efficiency.
More preferably, in the present embodiment, the inwall of hollow cavity 707 of the main body 702 is coated with screen pack 714, to prevent
Debris enter shower nozzle and block injection channel, largely extend the service life of shower nozzle.
More preferably, in the present embodiment, in order to realize foam pump 201, fire pump 401, water supply side Signal butterfly bamper 610,
The control of system side Signal butterfly bamper 617, foam liquid electromagnetic valve 614 and the valve opens solenoid valve 625 that drenches with rain, the froth fire extinguishing system
Also include Fire extinguisher, the Fire extinguisher by signal cable or be wirelessly transferred respectively with foam pump 201, fire water
Pump 401, water supply side Signal butterfly bamper 610, system side Signal butterfly bamper 617, foam liquid electromagnetic valve 614 and the valve opens solenoid valve that drenches with rain
625 electrical connections.
More preferably, in the present embodiment, in order to realize the Automated condtrol of froth fire extinguishing system, the froth fire extinguishing system is also
Set including fire detector, emergency start-stop press-button, display, control panel, illumination alert device, fire extinguishing indicator lamp and fire-fighting link
It is standby, the Fire extinguisher by signal cable or be wirelessly transferred respectively with fire detector, emergency start-stop press-button, display,
Control panel, illumination alert device, fire extinguishing indicator lamp and fire fighting linkage equipment electrical connection.Wherein, fire detector includes such as temperature
Sense detector, smoke alarm, light sensation detector etc., the fire hazard information for detecting protection zone.Emergency start-stop press-button is used
In the start and stop of control system under emergency.Display is used for the running parameter and state of system all parts.Control panel is used
In the progress of work for controlling and formulating system.Illumination alert device and fire extinguishing indicator lamp are used to remind protection zone to implement fire extinguishing
In, it is not close to.Fire fighting linkage equipment for example includes that automatic fire alarm system, smoke control system, fire-fighting evacuation system, cut-out are non-
Fire-fighting power supply.
Above disclosed is only presently preferred embodiments of the present invention, can not limit the right of the present invention with this certainly
Scope, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (10)
1. a kind of froth fire extinguishing system, it is characterised in that including foam liquid tank, foam solution delivery main, fire water supply, fire-fighting
Water delivery main, mixed liquor delivery main, at least one foam spray control valve group case and at least one extinguishing device, it is described
Foam spray control valve group case includes casing, be arranged at the valve that drenches with rain in the casing, proportioner, fire water inlet tube,
Foam solution inlet tube, mixture export pipe, warning water system water inlet pipe, warning water system and drainpipe；
The foam liquid tank is connected with the foam solution input of the foam solution delivery main, on the foam solution delivery main
Foam pump is provided with, the foam solution inlet tube of each foam spray control valve group case is total with foam solution conveying respectively
The foam solution output end connection of pipe；
The fire water supply is connected with the fire water input of the fire water delivery main, is set on the fire water delivery main
Be equipped with fire pump, the fire water inlet tube of each foam spray control valve group case respectively with the fire water delivery main
Fire water output end connection；
The valve that drenches with rain is provided with intake chamber, superposed water outlet chamber and the pressure chamber positioned at sidepiece positioned at bottom,
The water inlet chamber is connected with the fire water inlet tube, and water supply side Signal butterfly bamper, institute are provided with the fire water inlet tube
State water outlet chamber to be connected with the fire water input of the proportioner, the foam solution inlet tube and the proportioner
Foam solution input connection, be provided with the foam solution inlet tube foam solution ball valve, foam solution pressure gauge, first filtering
Device, foam liquid electromagnetic valve, balanced valve and first check-valve, the mixture export pipe are defeated with the mixed liquor of the proportioner
Go out end connection, system side Signal butterfly bamper is provided with the mixture export pipe；
The ft connection of the fire water inlet tube has the first outlet pipe, be provided with first outlet pipe the second filter,
Fire water pressure table and second check-valve, are communicated with the valve that drenches with rain and open between the end of first outlet pipe and the pressure chamber
Open component, the valve opening assembly that drenches with rain is including four-way union, the first tee pipe coupling, the second tee pipe coupling, drench with rain valve
Opens solenoid valve, the manually opened ball valve of the valve that drenches with rain and anti-reset valve, the first joint of the four-way union go out with described first
The end connection of water pipe, the second joint of the four-way union passes through the first joint of pipeline and first tee pipe coupling
Connection, the 3rd joint of the four-way union passes through the first fittings of pipeline and second tee pipe coupling, described
Second joint of the first tee pipe coupling is connected by pipeline with the pressure chamber, and the 3rd of first tee pipe coupling connects
Head is connected by pipeline with the upper pressure chamber of the anti-reset valve, and the second joint of second tee pipe coupling is by parallel connection
Pipeline drenches with rain valve opens solenoid valve and the manually opened ball valve of the valve that drenches with rain is connected with described respectively, and the of second tee pipe coupling
Three joints are connected by pipeline with the low pressure chamber of the anti-reset valve；
The ft connection of the water outlet chamber has the second outlet pipe, and the first water outlet ball valve, institute are provided with second outlet pipe
State the second outlet pipe to be connected with the water inlet end of the warning water system water inlet pipe, the 3rd mistake is provided with the warning water system water inlet pipe
Filter, pressure switch and warning water system water intake ball valve, the water side of the warning water system water inlet pipe and disappearing for the warning water system
Waterproof input is connected, and the fire water output end of the warning water system is connected with the drainpipe；
The mixture export pipe of each foam spray control valve group case respectively with the mixed liquor of the mixed liquor delivery main
Input is connected, and mixed liquor output end of each extinguishing device respectively with the mixed liquor delivery main is connected, Mei Yisuo
Extinguishing device is stated to correspond to a protection zone respectively and be connected with least one foam nozzle.
2. froth fire extinguishing system as claimed in claim 1, it is characterised in that the system side Signal butterfly bamper and the ratio are mixed
Debugging pipe is communicated with mixture export pipe between clutch, debugging hook gauge and debugging pipe ball are provided with the debugging pipe
Valve, the end of the debugging pipe connects with the drainpipe.
3. froth fire extinguishing system as claimed in claim 1, it is characterised in that the 4th joint of the four-way union is by pipe
Road is connected with the foam solution inlet tube, and cleaning ball valve is provided with the pipeline.
4. froth fire extinguishing system as claimed in claim 1, it is characterised in that the ft connection of the water inlet chamber has the 3rd to go out
Water pipe, is provided with the second water outlet ball valve, the 3rd outlet pipe and the warning water system water inlet pipe on the 3rd outlet pipe
Water inlet end is connected.
5. froth fire extinguishing system as claimed in claim 1, it is characterised in that the foam nozzle includes main body, the first shower nozzle
Unit, the second ejection head unit, the 3rd ejection head unit and the 4th ejection head unit, the main body are the cylinder with hollow cavity,
The upper end of the main body is provided with the pipe joint communicated with the hollow cavity, and lower end closed is opened on the excircle of the main body
Be provided with 4 spray-head interfaces in circumferentially equidistant distribution, first ejection head unit, the second ejection head unit, the 3rd ejection head unit and
4th ejection head unit is connected in turn on 4 spray-head interfaces and is communicated with the hollow cavity of the main body, first spray
The injection direction of head unit, the second ejection head unit, the 3rd ejection head unit and the 4th ejection head unit diagonally downward, first shower nozzle
Unit and the 3rd ejection head unit are short range shower nozzle, and second ejection head unit and the 4th ejection head unit are long-range shower nozzle.
6. froth fire extinguishing system as claimed in claim 4, it is characterised in that the injection direction of first ejection head unit prolongs
The angle that line long is formed with the center line of the main body is 60 degree~75 degree, the extension of the injection direction of second ejection head unit
The angle that line is formed with the center line of the main body is 60 degree~75 degree, the extended line of the injection direction of the 3rd ejection head unit
The angle formed with the center line of the main body is 60 degree~75 degree, the extended line of the injection direction of the 4th ejection head unit and
The angle that the center line of the main body is formed is 60 degree~75 degree.
7. froth fire extinguishing system as claimed in claim 4, it is characterised in that first ejection head unit and the 3rd ejection head unit
Include short range shower nozzle fixing body, short range sprayer body and short range shower nozzle helix core, the short range shower nozzle fixing body is weldingly fixed on
On the spray-head interface of the main body, the short range sprayer body is removably mounted on the short range shower nozzle fixing body, described near
Journey shower nozzle helix core is embedded in the short range sprayer body；Second ejection head unit and the 4th ejection head unit include long-range spray
Head fixing body, long-range sprayer body and long-range shower nozzle helix core, the long-range shower nozzle fixing body are weldingly fixed on the spray of the main body
On head interface, the long-range sprayer body is removably mounted on the long-range shower nozzle fixing body, the long-range shower nozzle helix core
It is embedded in the long-range sprayer body.
8. the froth fire extinguishing system as described in any one of claim 5 to 7, it is characterised in that in the hollow cavity of the main body
Wall is coated with screen pack.
9. froth fire extinguishing system as claimed in claim 1, it is characterised in that also including Fire extinguisher, the fire extinguishing control
Device by signal cable or be wirelessly transferred respectively with foam pump, fire pump, water supply side Signal butterfly bamper, system side signal butterfly
Valve, foam liquid electromagnetic valve and the valve opens solenoid valve that drenches with rain are electrically connected.
10. froth fire extinguishing system as claimed in claim 9, it is characterised in that also pressed including fire detector, emergency start-stop
Button, display, control panel, illumination alert device, fire extinguishing indicator lamp and fire fighting linkage equipment, the Fire extinguisher pass through signal
Cable or be wirelessly transferred respectively with fire detector, emergency start-stop press-button, display, control panel, illumination alert device, fire extinguishing refer to
Show lamp and fire fighting linkage equipment electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015681.2A CN106730551A (en) | 2017-01-10 | 2017-01-10 | A kind of froth fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015681.2A CN106730551A (en) | 2017-01-10 | 2017-01-10 | A kind of froth fire extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106730551A true CN106730551A (en) | 2017-05-31 |
Family
ID=58948699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710015681.2A Pending CN106730551A (en) | 2017-01-10 | 2017-01-10 | A kind of froth fire extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106730551A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497085A (en) * | 2017-09-20 | 2017-12-22 | 福建天广消防有限公司 | A kind of froth fire extinguishing system |
| CN110115815A (en) * | 2019-04-10 | 2019-08-13 | 惠州亿纬锂能股份有限公司 | New energy resource power battery system liquid injecting type fire-fighting system |
| CN112169237A (en) * | 2020-10-20 | 2021-01-05 | 山东朗晖石油化学股份有限公司 | Fire water system salvagees emptying devices |
| CN113318369A (en) * | 2021-04-22 | 2021-08-31 | 宁波水星环保科技有限公司 | Closed foam water spraying system |
| CN114515401A (en) * | 2022-03-24 | 2022-05-20 | 中船黄埔文冲船舶有限公司 | Ship fire-fighting system |
| CN115025425A (en) * | 2022-06-14 | 2022-09-09 | 华能核能技术研究院有限公司 | Fire-fighting foam spraying system |
| CN117244200A (en) * | 2023-11-13 | 2023-12-19 | 河南省威特消防设备有限公司 | Integrated foam liquid mixing and supplying equipment |
| JP7416415B2 (en) | 2020-04-06 | 2024-01-17 | ヤマトプロテック株式会社 | Foam fire extinguishing equipment and filling method of foam fire extinguishing agent aqueous solution |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2367335Y (en) * | 1999-02-12 | 2000-03-08 | 萧山双鲸消防机械有限公司 | Anti-resetting locking-stopping device |
| CN2903388Y (en) * | 2006-05-18 | 2007-05-23 | 亚泰(上海)消防技术研发有限公司 | Foam spraying controlling valve set special for tunnel |
| CN201643505U (en) * | 2010-04-02 | 2010-11-24 | 萃联（中国）消防设备制造有限公司 | Deluge valve with diaphragm valve flap |
| CN204170340U (en) * | 2014-09-18 | 2015-02-25 | 浙江恒安消防安全设备有限公司 | A kind of deluge alarm valve |
| CN205759309U (en) * | 2016-05-11 | 2016-12-07 | 广州市鹰穗消防设备有限公司 | A kind of foam nozzle near, long-range |
-
2017
- 2017-01-10 CN CN201710015681.2A patent/CN106730551A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2367335Y (en) * | 1999-02-12 | 2000-03-08 | 萧山双鲸消防机械有限公司 | Anti-resetting locking-stopping device |
| CN2903388Y (en) * | 2006-05-18 | 2007-05-23 | 亚泰(上海)消防技术研发有限公司 | Foam spraying controlling valve set special for tunnel |
| CN201643505U (en) * | 2010-04-02 | 2010-11-24 | 萃联（中国）消防设备制造有限公司 | Deluge valve with diaphragm valve flap |
| CN204170340U (en) * | 2014-09-18 | 2015-02-25 | 浙江恒安消防安全设备有限公司 | A kind of deluge alarm valve |
| CN205759309U (en) * | 2016-05-11 | 2016-12-07 | 广州市鹰穗消防设备有限公司 | A kind of foam nozzle near, long-range |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497085A (en) * | 2017-09-20 | 2017-12-22 | 福建天广消防有限公司 | A kind of froth fire extinguishing system |
| CN107497085B (en) * | 2017-09-20 | 2022-11-15 | 福建天广消防有限公司 | Foam fire extinguishing system |
| CN110115815A (en) * | 2019-04-10 | 2019-08-13 | 惠州亿纬锂能股份有限公司 | New energy resource power battery system liquid injecting type fire-fighting system |
| JP7416415B2 (en) | 2020-04-06 | 2024-01-17 | ヤマトプロテック株式会社 | Foam fire extinguishing equipment and filling method of foam fire extinguishing agent aqueous solution |
| CN112169237A (en) * | 2020-10-20 | 2021-01-05 | 山东朗晖石油化学股份有限公司 | Fire water system salvagees emptying devices |
| CN113318369A (en) * | 2021-04-22 | 2021-08-31 | 宁波水星环保科技有限公司 | Closed foam water spraying system |
| CN113318369B (en) * | 2021-04-22 | 2022-06-07 | 宁波水星环保科技有限公司 | Closed foam water spraying system |
| CN114515401A (en) * | 2022-03-24 | 2022-05-20 | 中船黄埔文冲船舶有限公司 | Ship fire-fighting system |
| CN115025425A (en) * | 2022-06-14 | 2022-09-09 | 华能核能技术研究院有限公司 | Fire-fighting foam spraying system |
| CN117244200A (en) * | 2023-11-13 | 2023-12-19 | 河南省威特消防设备有限公司 | Integrated foam liquid mixing and supplying equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106730551A (en) | A kind of froth fire extinguishing system | |
| CN206473695U (en) | A kind of foam spray control valve group case | |
| CN105749449A (en) | Funnel fire extinguishing system and fire extinguishing method | |
| CN111544817A (en) | Fire extinguishing system and fire extinguishing method for super high-rise building | |
| CN2903388Y (en) | Foam spraying controlling valve set special for tunnel | |
| CN206473696U (en) | A kind of froth fire extinguishing system | |
| CN110279961A (en) | A kind of substation's fire extinguishing system based on compressed air foam technology | |
| CN211215075U (en) | Fire extinguishing system with foam spray fire extinguishing and water spray continuous cooling functions | |
| CN202822542U (en) | High pressure water mist fire extinction apparatus in kitchen | |
| CN210250933U (en) | Transformer substation fire extinguishing system based on compressed air foam technology | |
| CN210131281U (en) | High-pressure water mist fire extinguishing system applied to urban underground comprehensive pipe gallery | |
| CN201537341U (en) | Foam-water spraying automatic fire extinguishing system | |
| CN110354434A (en) | A kind of novel fast fire-extinguishing apparatus in inflammable and explosive worker-house | |
| CN217612589U (en) | Intelligent fire extinguishing system for high-rise building | |
| CN103028333A (en) | High-efficient foaming device for compressed air A-type foams | |
| CN209154944U (en) | A kind of Novel fixed-type compressed air foam automatic fire extinguishing system | |
| CN103949030B (en) | A kind of fire disaster emergency feedback warning system | |
| CN111001108A (en) | Marine spraying system | |
| KR20060087153A (en) | Pulverizing nozzle for two fluid | |
| CN2605885Y (en) | Foam-water spraying combined automatic extinguisher | |
| CN215351723U (en) | Building outer wall external insulation automatic fire extinguishing system | |
| CN108785937A (en) | Fire-extinguishing device for kitchen equipment | |
| CN210205684U (en) | Closed foam water spraying fire-fighting system | |
| CN205759221U (en) | The vehicle-mounted fire-fighting equipment of environment protection type multifunctional | |
| CN201492849U (en) | General foam rain control valve bank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |