CN115463362A - Double-layer jet fire-fighting foam foaming and jetting device - Google Patents
Double-layer jet fire-fighting foam foaming and jetting device Download PDFInfo
- Publication number
- CN115463362A CN115463362A CN202210937753.XA CN202210937753A CN115463362A CN 115463362 A CN115463362 A CN 115463362A CN 202210937753 A CN202210937753 A CN 202210937753A CN 115463362 A CN115463362 A CN 115463362A
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- China
- Prior art keywords
- core barrel
- shell
- pipe
- vertical pipe
- liquid outlet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
-
- 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
Abstract
A double-layer jet fire-fighting foam foaming injection device comprises a shell, wherein a core barrel is arranged in the shell, two annular convex parts are arranged on the periphery of the core barrel, and an annular cavity is formed between the two convex parts and the shell; the front end of the core barrel is penetrated with a spray barrel, the inside of the core barrel is provided with a support plate, the inner ring of the support plate is penetrated with a liquid outlet pipe, and the liquid outlet pipe is connected with an L-shaped elbow outside the core barrel; the front end of the core cylinder is provided with a double-layer jet hole; the top of the shell is provided with a P-shaped handle, the P-shaped handle comprises a transverse pipe with two closed ends, a first vertical pipe and a second vertical pipe, the first vertical pipe and the second vertical pipe are vertically connected with the transverse pipe and are communicated, the second vertical pipe is connected with the Venturi assembly, and the Venturi assembly is connected with an L-shaped elbow and a foam liquid joint; the bottom of the shell is provided with a water inlet base which is connected with a water inlet pipe fitting.
Description
Technical Field
The invention relates to a fire fighting device, in particular to a double-layer jet fire fighting foam foaming and spraying device.
Background
After the liquid foam extinguishing agent is mixed with water, the generated fire extinguishing foam can form a foam layer with good tightness on the surface of an object, thereby isolating air, blocking combustion and/or preventing combustion. When a fire disaster occurs, the foam fire-fighting lance is connected with a water source meeting the flow requirement, when water flows through a special passage in the lance body, negative pressure is formed on a bypass, the foam extinguishing agent is sucked and mixed, and finally the foam extinguishing agent is sprayed out from the lance head. Therefore, on one hand, the liquid foam extinguishing agent needs to be fully mixed with water flow and air in the spraying process, so that a good foaming effect is realized; on the other hand, the larger the effective range is, the better the effective range is, so that the efficient fire extinguishing is realized.
The existing foam fire-fighting lance usually adopts a simple three-way structure, the foaming effect is poor, the kinetic energy loss of water flow is large, the jet distance is short, and the existing foam fire-fighting lance is heavy.
Disclosure of Invention
Aiming at the defects of the existing equipment and technology, the invention aims to provide a double-layer jet fire-fighting foam foaming and spraying device which can improve the foaming effect, improve the spraying distance, improve the fire extinguishing efficiency and reduce the weight of the equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-layer jet fire-fighting foam foaming injection device comprises a cylindrical shell, wherein a cylindrical core barrel is arranged in the shell, two annular convex parts are arranged on the periphery of the core barrel, and a sealing ring is sleeved on the periphery of each convex part, so that a sealed annular cavity is formed among the two convex parts, the outer wall of the core barrel and the inner wall of the shell;
the front end of the core barrel is fixedly provided with a spray barrel communicated with the core barrel, and a plurality of jet holes communicated with the annular chamber and the interior of the core barrel are arranged at the bulge part close to the spray barrel; the rear end of the core cylinder is fixedly connected with the rear end of the shell; a circular support plate is arranged inside the core barrel, and a liquid outlet pipe which is axially parallel to the core barrel is arranged in the middle of the support plate in a penetrating manner;
the top of the shell is provided with an upper mounting surface, a first through hole which penetrates through the upper mounting surface and the top of the shell is formed in the position corresponding to the top of the shell, and the first through hole is communicated with the annular cavity; the P-shaped handle is arranged on the upper mounting surface and comprises a transverse pipe with two closed ends, a first vertical pipe, a second vertical pipe and a transverse plate, wherein the first vertical pipe and the second vertical pipe are vertically connected and communicated with the transverse pipe; the first vertical pipe is close to the front end of the shell, and the second vertical pipe is close to the rear end of the shell; the transverse plate is fixedly connected with the upper mounting surface through a bolt; the first vertical pipe is correspondingly communicated with the first through hole, and the bottom of the second vertical pipe is provided with a Venturi assembly; the venturi assembly comprises a tee joint, the tee joint is provided with a vertically opposite water inlet, a mixed liquid outlet and a transverse foam liquid inlet; the water inlet is connected and communicated with the bottom end of the second vertical pipe; the foam liquid inlet is connected with a foam extinguishing agent connecting pipe;
the liquid outlet pipe penetrates through the core barrel, one end of the liquid outlet pipe is a liquid outlet, the other end of the liquid outlet pipe is connected with an L-shaped elbow positioned outside the core barrel, and the top end of the L-shaped elbow is connected with the mixed liquid outlet; the bottom of the shell is provided with a lower mounting surface, a through second through hole is formed in the position, corresponding to the bottom of the shell, of the lower mounting surface, and the second through hole is communicated with the annular cavity; the lower mounting surface is provided with a water inlet base which is connected with a water inlet pipe fitting.
Further, the jet holes include a first layer jet hole and a second layer jet hole, an included angle between the first layer jet hole and the axis of the cartridge ranges from 20 degrees to 24 degrees, and an included angle between the second layer jet hole and the axis of the cartridge ranges from 14 degrees to 18 degrees.
Further, the inner sectional area of the rear end of the core barrel is larger than or equal to the area of the through hole of the support plate, and the area of the through hole of the support plate is larger than or equal to the inner sectional area of the front end of the core barrel.
Furthermore, the rear end of the spray cylinder penetrates through the inner part of the front end of the core cylinder.
Furthermore, the support plate comprises an outer ring, an inner ring, and connecting ribs between the outer ring and the inner ring, and the liquid outlet pipe is arranged in the inner ring of the support plate in a penetrating manner.
The invention has the beneficial effects that:
1. the liquid foam extinguishing agent and the water are mixed for three times, and the mixture is fully impacted, so that the foaming effect is good;
2. the jet holes at two angles are arranged in a staggered manner, so that the firing range and the foaming effect are considered;
3. the open air inlet ensures that the flow kinetic energy loss is small;
4. the invention has compact structure, light weight and convenient hand holding.
Drawings
Fig. 1 is a schematic structural diagram of a double-layer jet fire-fighting foam foaming and spraying device of the invention.
FIG. 2 is an enlarged schematic view of the venturi assembly of the dual-layer jet firefighting foam injection apparatus of the present invention.
Fig. 3 is an exploded view of the double-jet firefighting foam foaming and spraying apparatus of the present invention.
Fig. 4 is a schematic view showing the structure of the jet hole of the double-jet firefighting foam foaming and spraying apparatus of the present invention.
Detailed Description
The present invention will be described with reference to the following embodiments and drawings, but the embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.
As shown in fig. 1, 2 and 3, the present invention provides a double-layer jet fire-fighting foam foaming injection device, which comprises a cylindrical casing 1, wherein a cylindrical core barrel 2 is arranged in the casing 1, two annular convex parts 21 are arranged on the periphery of the core barrel 2, and a sealing ring is sleeved on the periphery of the two convex parts 21, such that a sealed annular chamber 11 is formed between the two convex parts 21, the outer wall of the core barrel 2, and the inner wall of the casing 1.
The front end of the core barrel 2 is provided with the spray barrel 3 communicated with the core barrel 2 in a penetrating way, the bulge 21 close to the spray barrel 3 is provided with a plurality of jet holes 22 communicated with the annular chamber 11 and the inner part of the core barrel 2, so that water flow can be sprayed out of the annular chamber 11 into the core barrel 2 through the jet holes 22. The rear end of the spray tube 3 penetrates into the front end of the core tube 2.
The rear end of the core barrel 2 is fixedly connected with the rear end of the shell 1 through a bolt 23. The inside circular shape mounting panel 24 that is equipped with of this core section of thick bamboo 2, this mounting panel 24 middle part is worn to be equipped with the drain pipe 25 of 2 axial parallels of this core section of thick bamboos. The front end of the liquid outlet pipe is a liquid outlet, and the rear end of the liquid outlet pipe is communicated with an L-shaped elbow 26 positioned outside the core barrel 2. Specifically, as shown in fig. 3, the holder plate 24 includes an outer ring 241, an inner ring 242, and a connecting rib 243, and the liquid outlet pipe 25 is inserted into the inner ring 242. Particularly, this core section of thick bamboo 2 is the variable cross section inner chamber, and the interior sectional area more than or equal to this mounting panel 24's of its rear end through-hole area, the interior sectional area of this mounting panel 24's through-hole area more than or equal to this core section of thick bamboo 2 front end to it is unobstructed to guarantee the air inlet, and is beneficial to the increase range.
The top of the housing 1 is provided with an upper mounting surface 12, the upper mounting surface 12 and a corresponding position on the top of the housing 1 are provided with a first through hole 121, and the first through hole 121 is communicated with the annular chamber 11. The upper mounting surface 12 is used for mounting a P-shaped handle 4, and the P-shaped handle 4 comprises a cross pipe 40 with two closed ends, a first vertical pipe 41 which is vertically connected and communicated with the cross pipe 40 and is close to the front end of the shell 1, and a second vertical pipe 42 which is close to the rear end of the shell 1. A transverse plate 43 is arranged between the bottoms of the first vertical pipe 41 and the second vertical pipe 42, and the transverse plate 43 is fixedly connected to the upper mounting surface 12 through bolts. The first vertical pipe 41 is correspondingly communicated with the first through hole 121, and the bottom of the second vertical pipe 42 is connected and communicated with the venturi assembly 5. The venturi assembly 5 includes a tee 50 having vertically opposed water inlet 51, mixed liquor outlet 52 and transverse foam concentrate inlet 53, the venturi assembly 5 being in communication with the secondary standpipe 42 through the water inlet 51, with the L-bend 26 through the mixed liquor outlet 52, and with the foam concentrate connecting tube through the foam concentrate inlet 53.
The bottom of the housing 1 is provided with a lower mounting surface 13, the lower mounting surface 13 and a corresponding position of the bottom of the housing 1 are provided with a second through hole 131, and the second through hole 131 is communicated with the annular chamber 11. The lower mounting surface 13 is provided with a water inlet base 6, and the water inlet base 6 is connected with a water inlet pipe fitting 7.
The application process of the invention is as follows: the water inlet pipe fitting 7 is connected with a water source water pipe, and the foam liquid inlet 53 is connected with the liquid foam extinguishing agent through a foam extinguishing agent connecting pipe. Water flows through the water pipe and the water inlet base 6 to enter the annular cavity 11 and then enters the P-shaped handle 4, when the water flows through the Venturi assembly 5 through the second vertical pipe 42, bypass negative pressure is formed at the position of the tee joint 50 to suck the liquid foam extinguishing agent, the first mixing is realized at the position of the Venturi assembly 5, and the mixed liquid is sprayed out from the liquid outlet. The core barrel 2 is provided with a jet hole 22, the main water flow is sprayed out from the annular chamber 11 through the jet hole 22, and is mixed with the mixed liquid generated by the first mixing again, and finally is sprayed out from the spray barrel 3. As shown in fig. 4, the jet hole 22 is at an angle with respect to the first mixed liquid (horizontal direction), and the larger the angle (20 ° to 24 °), the better the foaming effect (i.e. first foaming) is; the smaller the angle (14 to 18) the more advantageous it is to achieve a longer shot (i.e. the second foaming). In order to obtain a good balance between the shooting range and the foaming effect, two or more than two kinds of jet holes can be arranged in a mixed and inserted manner, that is, the jet hole 22 comprises a first layer jet hole 221 and a second layer jet hole 222, the angle of an included angle α between the first layer jet hole 221 and the axis of the cartridge 2 is 20 ° to 24 °, and the angle of an included angle β between the second layer jet hole 222 and the axis of the cartridge 2 is 14 ° to 18 °.
The invention has the following advantages:
the invention realizes the three-time mixing of the liquid foam extinguishing agent and water through the special channel design in the gun body, so that the mixing is more sufficient, and the good foaming effect is realized. By utilizing the Venturi effect, negative pressure is formed when water flows pass through the bypass to suck the liquid foam extinguishing agent into the passage, so that the first mixing is realized; the mixed liquid formed by the first mixing collides with the water flow sprayed out from the first layer of jet holes to realize the second mixing (namely, the first foaming), and then collides with the water flow sprayed out from the second layer of jet holes to realize the third mixing (namely, the second foaming), and finally is sprayed out from the spray cylinder of the gun head;
and 2, mixing the water flow sprayed out of the large-angle jet hole for the second time. The significance of the large-angle jet hole is that the mixed flow is impacted and mixed more fully so as to ensure good foaming effect;
and 3, mixing the water flow sprayed out of the small-angle jet hole for the third time. The small-angle jet hole has the significance of ensuring that the kinetic energy loss of liquid flow is small so as to ensure the range of the liquid flow.
4, the invention realizes the shunting by utilizing the external P-shaped hollow handle, ensures that the air inlet is completely opened, and reduces the kinetic energy loss caused by vacuum suction;
5, the invention realizes the flow distribution by utilizing the hollow P-shaped handle, saves parts such as pipelines, joints and the like, and lightens the weight.
The invention is defined by the claims. Based on this, it should be understood that various obvious changes and modifications can be made by those skilled in the art, which are within the main spirit and scope of the present invention.
Claims (4)
1. A double-layer jet fire-fighting foam foaming injection device is characterized by comprising a cylindrical shell, wherein a cylindrical core barrel is arranged in the shell, two annular convex parts are arranged on the periphery of the core barrel, and a sealing ring is sleeved on the periphery of each convex part, so that a sealed annular cavity is formed among the two convex parts, the outer wall of the core barrel and the inner wall of the shell;
the front end of the core barrel is fixedly provided with a spray barrel communicated with the core barrel, and a plurality of jet holes communicated with the annular chamber and the interior of the core barrel are arranged at the bulge part close to the spray barrel; the rear end of the core cylinder is fixedly connected with the rear end of the shell; a circular support plate is arranged in the core barrel, and a liquid outlet pipe which is axially parallel to the core barrel is arranged in the middle of the support plate in a penetrating manner;
the top of the shell is provided with an upper mounting surface, the upper mounting surface and the position corresponding to the top of the shell are provided with a first through hole which penetrates through the shell, and the first through hole is communicated with the annular cavity; the P-shaped handle is arranged on the upper mounting surface and comprises a transverse pipe with two closed ends, a first vertical pipe, a second vertical pipe and a transverse plate, wherein the first vertical pipe and the second vertical pipe are vertically connected and communicated with the transverse pipe; the first vertical pipe is close to the front end of the shell, and the second vertical pipe is close to the rear end of the shell; the transverse plate is fixedly connected with the upper mounting surface through a bolt; the first vertical pipe is correspondingly communicated with the first through hole, and the bottom of the second vertical pipe is provided with a Venturi assembly; the venturi assembly comprises a tee joint, the tee joint is provided with a vertically opposite water inlet, a mixed liquid outlet and a transverse foam liquid inlet; the water inlet is connected and communicated with the bottom end of the second vertical pipe; the foam liquid inlet is connected with a foam extinguishing agent connecting pipe;
the liquid outlet pipe penetrates through the core barrel, one end of the liquid outlet pipe is a liquid outlet, the other end of the liquid outlet pipe is connected with an L-shaped elbow positioned outside the core barrel, and the top end of the L-shaped elbow is connected with the mixed liquid outlet; the bottom of the shell is provided with a lower mounting surface, a through second through hole is formed in the position, corresponding to the bottom of the shell, of the lower mounting surface, and the second through hole is communicated with the annular cavity; the lower mounting surface is provided with a water inlet base which is connected with a water inlet pipe fitting.
2. The dual-layer jet fire-fighting foam foaming and spraying device of claim 1, characterized in that: the jet holes comprise a first layer of jet holes and a second layer of jet holes, the included angle between the first layer of jet holes and the axis of the core barrel is 20-24 degrees, and the included angle between the second layer of jet holes and the axis of the core barrel is 14-18 degrees.
3. The double-layer jet fire-fighting foam foaming and spraying device of claim 1, characterized in that: the inner sectional area of the rear end of the core barrel is larger than or equal to the area of the through hole of the support plate, and the area of the through hole of the support plate is larger than or equal to the inner sectional area of the front end of the core barrel.
4. The dual-layer jet fire-fighting foam foaming and spraying device of claim 1, 2 or 3, characterized in that: the support plate comprises an outer ring, an inner ring and a plurality of connecting ribs between the outer ring and the inner ring, and the liquid outlet pipe penetrates through the inner ring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210937753.XA CN115463362A (en) | 2022-08-05 | 2022-08-05 | Double-layer jet fire-fighting foam foaming and jetting device |
| PCT/CN2023/095977 WO2024027293A1 (en) | 2022-08-05 | 2023-05-24 | Dual-layer jet fire-fighting foam producing and spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210937753.XA CN115463362A (en) | 2022-08-05 | 2022-08-05 | Double-layer jet fire-fighting foam foaming and jetting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115463362A true CN115463362A (en) | 2022-12-13 |
Family
ID=84366486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210937753.XA Pending CN115463362A (en) | 2022-08-05 | 2022-08-05 | Double-layer jet fire-fighting foam foaming and jetting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115463362A (en) |
| WO (1) | WO2024027293A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027293A1 (en) * | 2022-08-05 | 2024-02-08 | 绿友机械集团股份有限公司 | Dual-layer jet fire-fighting foam producing and spraying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB776783A (en) * | 1954-01-18 | 1957-06-12 | Edward Haftke | Improvements in foam generators |
| FR2303605A1 (en) * | 1975-03-12 | 1976-10-08 | Rotvand Georges | FOAM GENERATOR |
| US5445226A (en) * | 1993-05-04 | 1995-08-29 | Scott Plastics Ltd. | Foam generating apparatus for attachment to hose delivering pressurized liquid |
| DE10013974A1 (en) * | 2000-03-21 | 2001-10-04 | Andreas Vigh | Mixer for fire pump outlet has branch connection pipe for foam feed connected across venturi |
| DE202015009049U1 (en) * | 2015-06-02 | 2016-08-01 | Awg Fittings Gmbh | foam pipe |
| CN105169598B (en) * | 2015-07-29 | 2018-05-25 | 成都煦华鳌龙科技有限公司 | A kind of air foam rifle |
| CN105148429B (en) * | 2015-07-29 | 2018-04-10 | 成都煦华鳌龙科技有限公司 | A kind of wind-force froth fire extinguishing system |
| CN206026937U (en) * | 2016-08-23 | 2017-03-22 | 成都自能消防设备有限公司 | From inhaling formula air bubble gun |
| CN206026920U (en) * | 2016-08-23 | 2017-03-22 | 成都自能消防设备有限公司 | Stock formula air bubble gun |
| CN207152915U (en) * | 2017-08-22 | 2018-03-30 | 武汉迪克坦科技有限公司 | A kind of self-priming air foam rifle |
| CN114053635A (en) * | 2021-12-02 | 2022-02-18 | 东莞市斯惠威电子科技有限公司 | Handheld foam fire extinguishing gun and application thereof |
| CN218220869U (en) * | 2022-08-05 | 2023-01-06 | 绿友机械集团股份有限公司 | Double-layer jet fire-fighting foam foaming and jetting device |
| CN115463362A (en) * | 2022-08-05 | 2022-12-13 | 绿友机械集团股份有限公司 | Double-layer jet fire-fighting foam foaming and jetting device |
-
2022
- 2022-08-05 CN CN202210937753.XA patent/CN115463362A/en active Pending
-
2023
- 2023-05-24 WO PCT/CN2023/095977 patent/WO2024027293A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024027293A1 (en) * | 2022-08-05 | 2024-02-08 | 绿友机械集团股份有限公司 | Dual-layer jet fire-fighting foam producing and spraying device |
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| Publication number | Publication date |
|---|---|
| WO2024027293A1 (en) | 2024-02-08 |
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