CN213941952U - Compressed air foam gun - Google Patents
Compressed air foam gun Download PDFInfo
- Publication number
- CN213941952U CN213941952U CN202022281540.5U CN202022281540U CN213941952U CN 213941952 U CN213941952 U CN 213941952U CN 202022281540 U CN202022281540 U CN 202022281540U CN 213941952 U CN213941952 U CN 213941952U
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- gun
- compressed air
- injection
- foam
- spray
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Abstract
The utility model discloses a compressed air foam gun. The design comprises a foam inlet, a gun body, an injection gun barrel, a rotary screw, an O-shaped sealing ring, a clamping sleeve and an injection gun head; the total area of the spray gun head is equal to the area of the through hole of the spray gun barrel, and the foam jet state is changed by changing the shape of the spray nozzle, so that the purpose of large-area coverage is achieved. This design simple structure, it is little to the structural damage of compressed air foam to spray the pipeline, has the direct current and sprays, covers on a large scale and key area covers three kinds of injection effects, but the fast switch, the simple operation does benefit to the conflagration scene of dealing with no at conflagration suppression and rescue in-process.
Description
Technical Field
The utility model relates to a fire control compressed air foam extinguishing device especially relates to a compressed air foam rifle.
Background
Compressed air foam guns equipped with various small-sized compressed air foam fire extinguishing equipment are all low-multiple foam guns or fire-fighting lance structures. Because the compressed air foam is different from low-multiple foam and is in a foaming state of uniformly mixed air, the compressed air foam sprayed by the existing compressed air foam gun structure is not good enough in foam state, and only can be sprayed in a direct current state or has a large destructive effect on the foam structure, so that the fire extinguishing effect is directly influenced.
Disclosure of Invention
In order to improve the foam performance that erupts, realize compressed air foam direct current injection, cover or key area on a large scale and cover, the utility model provides a novel but compressed air foam gun of fast switch injection mode.
The utility model adopts the technical proposal that: a compressed air foam gun is characterized by comprising a foam inlet, a gun body, an injection gun barrel, a rotary screw, an O-shaped sealing ring, a clamping sleeve and an injection gun head; one end of the foam inlet is connected with the compressed air foam generating device through a hose, and the other end of the foam inlet is in threaded connection with the inlet of the gun body; the outlet of the gun body is in threaded connection with one end of a spray gun tube, a through hole is formed in the spray gun tube, a boss is arranged at the other end of the spray gun tube, and an O-shaped sealing ring is arranged at the boss; cutting ferrule one end pass through the rotatory fix with screw on the injection barrel, rotate from top to bottom through the rotatory screw, the cutting ferrule other end is the internal thread, injection rifle head one end is the external screw thread, its outside be with the corresponding concave station structure of injection barrel boss, the injection rifle head agrees with injection barrel boss through the precession mode in the cutting ferrule to it is sealed through O type sealing washer.
The spray gun head adopts a duckbill-shaped spray opening.
The spray gun head is a shower type spray nozzle.
The total area of the duckbill-shaped injection port and the sprinkler-shaped injection port is equal to the area of the through hole of the injection gun barrel respectively.
The utility model has the advantages that: this design simple structure, it is little to the structural damage of compressed air foam to spray the pipeline, has the direct current and sprays, covers on a large scale and key area covers three kinds of injection effects, but the fast switch, the simple operation does benefit to the conflagration scene of dealing with no at conflagration suppression and rescue in-process.
Drawings
FIG. 1 is a schematic view of an exemplary compressed air foam gun having a duckbill spray gun head;
FIG. 2 is a schematic view of the duckbill spray gun head of FIG. 1;
FIG. 3 is a schematic view of an embodiment of a compressed air foam gun with a shower-type spray gun head;
figure 4 is a schematic view of a shower-type spray gun head of figure 3;
FIG. 5 is a schematic view of an embodiment of a compressed air foam gun with a spray gun barrel selected for direct injection;
fig. 6 is a schematic view, partly in section, of the structure of the projection of the lance tube and the projection of the recess of the lance tip.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1, 2, 3, 4 and 6, a compressed air foam gun comprises a foam inlet 1, a gun body 2, a spray gun barrel 3, a rotary screw 4, an O-ring 5, a clamping sleeve 6 and a spray gun head 7; one end of the foam inlet 1 is connected with a compressed air foam generating device through a hose, and the other end of the foam inlet is in threaded connection with an inlet of the gun body 2; the outlet of the gun body 2 is in threaded connection with one end of the ejection gun barrel 3, a through hole is formed in the ejection gun barrel 3, the other end of the ejection gun barrel 3 is provided with a boss, and an O-shaped sealing ring 5 is arranged at the boss; 6 one end of cutting ferrule is fixed on injection gun pipe 3 through swivel screw 4, carries out the tilting through swivel screw 4, and 6 other ends of cutting ferrule are the internal thread, and 7 one end of injection rifle head are the external screw thread, and its outside is the concave station structure corresponding with injection gun pipe boss, and injection rifle head 7 agrees with injection gun pipe boss through the precession mode in the cutting ferrule to it is sealed through O type sealing washer 5.
The foam inlet 1 is connected with a compressed air foam generating device through a hose, and the generated compressed air foam enters the compressed air foam gun through the foam inlet 1.
The gun body 2 is an integral structure known in the industry, and the opening and closing of the internal passage can be controlled by a wrench.
Example 1: as shown in fig. 1 and 2, in the case of a large-area fire, the spray gun head 7 of the present embodiment is a duckbill-type spray nozzle, so that the foam can be sprayed in a sector to cover a large area.
Example 2: as shown in fig. 3 and 4, for a certain important region, the spray gun head 7 of the present embodiment is a shower-type spray nozzle.
The total area of the duckbill-shaped injection port and the shower head-shaped injection port is respectively equal to the area of the through hole of the injection gun tube 3.
Example 3: as shown in fig. 5, when the fire is great and the fire is extinguished from a remote place, the compressed air foam gun of the embodiment is not provided with the spray gun head 7, and the spray gun barrel is selected for direct-current spraying.
Through selecting the injection gun pipe or installing the injection gun head of different injection port shapes, can realize that the direct current sprays, covers in a large scale and key region covers three kinds of injection effects.
Claims (5)
1. A compressed air foam gun is characterized by comprising a foam inlet (1), a gun body (2), an injection gun barrel (3), a rotary screw (4), an O-shaped sealing ring (5), a clamping sleeve (6) and an injection gun head (7); one end of the foam inlet (1) is connected with the compressed air foam generating device through a hose, and the other end of the foam inlet is in threaded connection with an inlet of the gun body (2); the outlet of the gun body (2) is in threaded connection with one end of the ejection gun pipe (3), a through hole is formed in the ejection gun pipe (3), a boss is arranged at the other end of the ejection gun pipe (3), and an O-shaped sealing ring (5) is arranged at the boss; cutting ferrule (6) one end pass through swivel screw (4) to be fixed on injection barrel (3), rotate from top to bottom through swivel screw (4), the cutting ferrule (6) other end is the internal thread, injection rifle head (7) one end is the external screw thread, its outside be with the corresponding concave station structure of injection barrel boss, injection rifle head (7) agree with injection barrel boss through precession mode in the cutting ferrule to it is sealed through O type sealing washer (5).
2. A compressed air foam gun according to claim 1, characterized in that the spray gun head (7) is a duckbill spray nozzle.
3. A compressed air foam gun according to claim 1, wherein the spray gun head (7) is a shower-type spray nozzle.
4. A compressed air foam gun according to claim 2, characterized in that the total area of the duckbill spray orifices is equal to the area of the through-holes of the spray gun barrel (3).
5. A compressed air foam gun according to claim 3, characterized in that the total area of the shower-type spray openings is equal to the area of the through-holes of the spray gun barrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022281540.5U CN213941952U (en) | 2020-10-14 | 2020-10-14 | Compressed air foam gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022281540.5U CN213941952U (en) | 2020-10-14 | 2020-10-14 | Compressed air foam gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213941952U true CN213941952U (en) | 2021-08-13 |
Family
ID=77203562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022281540.5U Active CN213941952U (en) | 2020-10-14 | 2020-10-14 | Compressed air foam gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213941952U (en) |
-
2020
- 2020-10-14 CN CN202022281540.5U patent/CN213941952U/en active Active
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