CN2460131Y - Middle-low multiple foam generator - Google Patents
Middle-low multiple foam generator Download PDFInfo
- Publication number
- CN2460131Y CN2460131Y CN 00256577 CN00256577U CN2460131Y CN 2460131 Y CN2460131 Y CN 2460131Y CN 00256577 CN00256577 CN 00256577 CN 00256577 U CN00256577 U CN 00256577U CN 2460131 Y CN2460131 Y CN 2460131Y
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- Prior art keywords
- spray
- foam
- fire
- millimeter
- tongue
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- Expired - Fee Related
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Nozzles (AREA)
Abstract
The utility model relates to a foam generator for fire protection, particularly a middle-low multiple foam generator which comprises a spray nozzle, a net cover, a bracket, etc., wherein, the middle of the spray nozzle is provided with a spray tongue which is installed at the back surface of a spray chamber and has special structure; the obverse surface of the net cover is a convex arch shape, the side surface of the net cover is a cylindrical shape, and the net cover are uniformly studded with net meshes. The utility model can be arranged at the side of an apparatus of emphasis protection in advance and can be arranged at a place of big fire danger and difficult rescue in advance; thereby, the foam can be automatically sprayed out when the fire is generated; thus, the fire fighting work can be realized in time. The utility model has the advantages of simple structure, convenient use, low cost, and stable and reliable function.
Description
The utility model relates to a kind of foam maker that is used for fire-fighting, particularly the middle low expansion foam generator of settling in advance.
Fixed froth installation in the fire-fighting equipment is a kind of powerful fire extinguishing weapon.When breaking out of fire,, can select the foam fire-fighting of high multiple, medium multiple or low multiple for use according to the different situations of fire.At present, medium expansion foam generator or shower nozzle have only hand-held, and the structure more complicated is applicable to that the fire fighter is carried into the scene of fire and uses when fire takes place.Be illustrated in figure 1 as the structural representation of hand-held medium expansion foam generator, foam solution enters from inlet 8 ＇ among the figure, from spoiler 10 ' and adjustable slip ring 6 ' between the gap ejection, through steel wire 2 ' with 3 ＇, form foam, from jet work durm 1 ' be sprayed onto on the comburant of fire.Support to connect 4 ' and bolt 9 ＇ with jet work durm 1 ' be fixed on mandrel 11 ' on.In order to regulate the formation effect of foam, operating personnel can change spoiler 10 ' and adjustable slip ring 6 ' between gap length.Adjustable slip ring 6 ＇ be enclosed within retainer ring 7 ' on, can rotate, adjustable slip ring 6 ' on a spirality long slot bore is arranged, one of round pin 5 ＇ be fixed on mandrel 11 ' on, the other end from retainer ring 7 ' stretch, probe in the spirality long slot bore adjustable slip ring 6 ' when rotated can be along the axis lifting, thereby changed the gap between it and spoiler 10 ＇, also just influenced the flow velocity of foam solution.Hand-held medium expansion foam generator be applicable to 20-30 doubly foam and the foam solution of certain range (being generally tens meters) is arranged, be applicable to that the hand-held foam maker of operating personnel enters the scene of a fire and rushes at comburant with foam and put out a fire.Yet; for facility and article important, that need focused protection; perhaps for the unapproachable inflammable sealing of personnel scene of fire (as garage, oil depot, airport, machine room etc.); and fire risk is big, the place of difficulty of putting out a fire to save life and property, and should prevent formerly, settles foam maker in advance; so that in case there is fire to take place; can in time spray a large amount of foams, fire extinguishing as early as possible, protection facility or article.But, do not have desirable fire fighting device in this respect so far.
The purpose of this utility model is exactly at the deficiencies in the prior art, a kind of middle low expansion foam generator is proposed, it mainly is applicable to low expansion foam liquid ejection low-expansion foam, also be applicable to medium expansion foaming agent ejection medium expansion foam, can settle in advance in inflammable sealing, fire risk place big, the difficulty of putting out a fire to save life and property, as garage, oil depot, airport, machine room, museum etc., it is simple in structure, cost is low, and function-stable is reliable.
The purpose of this utility model is achieved through the following technical solutions.
Low expansion foam generator in a kind of comprises nozzle, guard, support etc., and the centre of described nozzle also has a spray tongue that is installed in the spray chamber back, and the front of described guard is protruding arcuation, and the side is cylindric, and all there is the mesh that evenly gathers positive and side.
Described spray tongue is intersected mutually by two risers to be formed, and coming the liquid direction that the thin slice of one mistake axial line is arranged, two risers is coupled together, and in the future the liquid lumen shaft to being divided into two, all there is a little rectangular indentation the nearly center of each riser, come liquid from then on two breach pass through, enter spray chamber.
The angle of the crossing α of two risers of described spray tongue is 15-70 °.
Little rectangular indentation on the described spray tongue is of a size of 2 * 3-4 * 6 millimeter.
The spray chamber length of described nozzle is the 10-20 millimeter, and center-hole diameter is of a size of the 4-15 millimeter, and the tapering of centre bore outer vent is 1: 1.5-2.5.
The diameter of the mesh on the described guard is a φ 2-5 millimeter, and density is 12-28 hole/square inch.
The utility model has the advantages that: middle low expansion foam generator also is applicable to 200-300 medium expansion foaming agent doubly not only applicable to 20-30 low expansion foam liquid doubly, is applicable to the foam solution that flowability is poor, accumulation property is strong.It can be placed in by the facility that needs to lay special stress on protecting in advance; the also personnel of the being placed in sealing scene of fire that is difficult to enter in advance; as garage, airport, oil depot, museum etc.; when fire took place, temperature raise or smog is arranged, and autoalarm is reported to the police; start automatic switch; emit foam solution, middle low expansion foam generator just can spray the facility that foam coverage is caught fire, and puts out a fire in time, reduces the loss.Middle low expansion foam generator architecture is simple, easy to use, cost is low, function-stable is reliable.
Description of drawings:
Fig. 1 is the generalized section of existing hand-held medium expansion foam generator;
Fig. 2 is the schematic diagram of low expansion foam generator in the utility model;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the front view of spray tongue;
Fig. 5 sprays the A of tongue to view.
Introduce embodiment of the present utility model below in conjunction with accompanying drawing, so that further understand the utility model.
Caliber is 1 " middle low expansion foam generator; comprise nozzle 1, guard 2, support 3 etc., the centre of described nozzle also has a spray tongue 4 that is installed in spray chamber 5 back, and the front of described guard is protruding arcuation; the side is cylindric, and all there is evenly densely covered mesh positive and side.
Described spray tongue is intersected mutually by two risers 7 to be formed, and coming the liquid direction that the thin slice 6 of one mistake axial line is arranged, two risers is coupled together, become one, and the liquid lumen shaft is to being divided into two in the future, all there is a little rectangular indentation 8 the nearly center of each riser, come liquid from then on two breach pass through, enter spray chamber 5.The thickness of thin slice 6 is 1 millimeter, and the thickness of riser 7 is 3 millimeters.
The angle of the crossing α of two risers of described spray tongue is 60 °.
Little rectangular indentation 8 on the described spray tongue is of a size of 3.5 * 3.5 millimeters.
The length of the spray chamber 5 of described nozzle 1 is 20 millimeters, and the diameter dimension of centre bore 9 is 10 millimeters, and the tapering of centre bore outer vent 10 is 1: 1.7.
The diameter of the mesh on the described guard 2 is 2.5 millimeters of φ, and density is 18 hole/square inches.
At first run into when foam comes liquid to enter nozzle and spray tongue 4, the thin slice of crossing axial line 6 on it liquid in the future is divided into two, comes liquid to clamp-on little rectangular indentation 8 sideling along two intersection risers 7, passes through fast, and scatters along intersection riser plane.Pass through spray chamber 5 then,, collect centre bore 9, disperse, air is evenly mixed with foam solution through the injection of centre bore 9 and centre bore outer vent 10 from the forward conical cavity of spray chamber 5.By mesh densely covered on the guard 2, rely on the surface tension of foam solution at last, form foam, spray this device, cover on the facility that needs protection.
The utility model is the medium expansion foam generator when using medium expansion foaming agent, the foam solution coefficient of foaming can reach 200-300 doubly, and the ejection flow is 1.5 liters/second, also can use low expansion foam liquid, be the low expansion foam generator at this moment, the foam solution coefficient of foaming only is 20-30 times.
Claims (6)
1. low expansion foam generator in a kind, comprise nozzle, guard, support etc., it is characterized in that the centre of described nozzle also has a spray tongue that is installed in the spray chamber back, the front of described guard is protruding arcuation, the side is cylindric, and all there is the mesh that evenly gathers positive and side.
2. foam maker according to claim 1, it is characterized in that described spray tongue is intersected mutually by two risers forms, coming the liquid direction that the thin slice of one mistake axial line is arranged, two risers are coupled together, and in the future the liquid lumen shaft to being divided into two, all there is a little rectangular indentation the nearly center of each riser, come liquid from then on two breach pass through, enter spray chamber.
3. foam maker according to claim 2, the angle of the crossing α that it is characterized in that two risers of described spray tongue is 15-70 °.
4. foam maker according to claim 2 is characterized in that little rectangular indentation on the described spray tongue is of a size of 2 * 3-4 * 6 millimeter.
5. foam maker according to claim 1, the spray chamber length that it is characterized in that described nozzle is the 10-20 millimeter, and center-hole diameter is of a size of the 4-15 millimeter, and the tapering of centre bore outer vent is 1: 1.5-2.5.
6. foam maker according to claim 1, the diameter that it is characterized in that the mesh on the described guard are φ 2-5 millimeter, and density is 12-28 hole/square inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256577 CN2460131Y (en) | 2000-11-29 | 2000-11-29 | Middle-low multiple foam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256577 CN2460131Y (en) | 2000-11-29 | 2000-11-29 | Middle-low multiple foam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2460131Y true CN2460131Y (en) | 2001-11-21 |
Family
ID=33613263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00256577 Expired - Fee Related CN2460131Y (en) | 2000-11-29 | 2000-11-29 | Middle-low multiple foam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2460131Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068780A (en) * | 2011-01-16 | 2011-05-25 | 哈尔滨工程大学 | Air-water mixed fire extinguishing spray nozzle |
| CN110975193A (en) * | 2019-12-24 | 2020-04-10 | 磐龙安全技术有限公司 | Compressed air foam fluid mixing device |
-
2000
- 2000-11-29 CN CN 00256577 patent/CN2460131Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068780A (en) * | 2011-01-16 | 2011-05-25 | 哈尔滨工程大学 | Air-water mixed fire extinguishing spray nozzle |
| CN102068780B (en) * | 2011-01-16 | 2012-03-14 | 哈尔滨工程大学 | Air-water mixed fire extinguishing spray nozzle |
| CN110975193A (en) * | 2019-12-24 | 2020-04-10 | 磐龙安全技术有限公司 | Compressed air foam fluid mixing device |
| CN110975193B (en) * | 2019-12-24 | 2024-05-28 | 磐龙安全技术有限公司 | Compressed air foam fluid mixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |