CN218187609U - Backpack premixed compressed air foam fire extinguishing device - Google Patents
Backpack premixed compressed air foam fire extinguishing device Download PDFInfo
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- CN218187609U CN218187609U CN202221132518.7U CN202221132518U CN218187609U CN 218187609 U CN218187609 U CN 218187609U CN 202221132518 U CN202221132518 U CN 202221132518U CN 218187609 U CN218187609 U CN 218187609U
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Abstract
The application provides a backpack premixed compressed air foam fire extinguishing device which comprises a back frame, a foam box, a first steel cylinder, a second steel cylinder, a steel cylinder fixing support, a first high-pressure cylinder valve, a second high-pressure cylinder valve, a first wheel, a second wheel, a pull rod, a box cover, a switch valve, a steel cylinder fixing binding band, a first pressure reducer A, a second pressure reducer A and a fire extinguishing assembly, wherein the foam box is arranged on the back frame; the pull rod is provided with a handle B, and the handle B is matched with the first wheel and the second wheel for use; the whole device can be pushed and pulled, the intensity of fire fighters in the process of rescuing and extinguishing fire is reduced, gas filled in the first steel cylinder is connected to the breathing mask to provide air or oxygen required by the fire fighters after the pressure of the gas filled in the first steel cylinder is adjusted to a proper value through the first high-pressure cylinder valve and the first pressure reducer A, and the life safety of the fire fighters is ensured; by adjusting the switch valve, wet-type CAFS foam or dry-type CAFS fire extinguishing foam can be respectively provided, so that corresponding foam can be sprayed out in different scenes, conversion is easy, and rescue time is saved.
Description
Technical Field
The utility model relates to the technical field of fire extinguishers, in particular to a backpack pre-mixing compressed air foam fire extinguishing device;
background
The fire extinguishing principle of the foam fire extinguisher is that a large amount of foam sprayed by the foam fire extinguisher can be adhered to combustible substances, so that the combustible substances are isolated from air, and meanwhile, the temperature is reduced, and the combustion condition is destroyed, thereby achieving the purpose of extinguishing fire; the foam fire extinguisher comprises: portable foam extinguishers, cart-based foam extinguishers and air-based foam extinguishers; the foam fire extinguisher should be stored in a dry, shady and cool place, ventilated and convenient to take and use, and cannot be close to a high-temperature place or a place possibly exposed to the sun so as to prevent the carbon acid from decomposing and losing efficacy; in winter, anti-freezing measures are taken to prevent freezing; dust should be frequently removed, and the nozzle should be dredged to keep the nozzle smooth;
however, the existing foam fire extinguisher has unstable foaming performance of foam sprayed by the fire extinguisher due to the structural arrangement, even dry foam cannot be sprayed, and the fire extinguishing effect is often unsatisfactory, so that economic loss is caused, and even the personal safety of fire fighters is harmed; in addition, when fire occurs at a high place, a fireman often needs to carry the fire extinguisher to go upstairs for fire extinguishing, but the existing backpack fire extinguisher causes inconvenience for fire extinguishing and rescue due to unreasonable structural design.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the existing foam fire extinguisher, due to the structural arrangement, the foaming performance of the foam sprayed by the fire extinguisher is unstable, even dry foam can not be generated, the fire extinguishing effect is often not ideal, economic loss is caused, and even the personal safety of fire fighters is harmed; in addition, when a fire occurs at a high place, a fireman often needs to carry the fire extinguisher to go upstairs for fire extinguishment, but the existing carrying fire extinguisher causes the problem of inconvenient fire extinguishment and rescue due to the unreasonable structural design;
in order to solve the existing problems, the utility model provides a following technical scheme:
a backpack pre-mixing compressed air foam fire extinguishing device comprises a back frame, a foam box, a first steel cylinder, a second steel cylinder, a steel cylinder fixing support, a first high-pressure cylinder valve, a second high-pressure cylinder valve, a first wheel, a second wheel, a pull rod, a box cover, a switch valve, a steel cylinder fixing bandage, a first pressure reducer A, a second pressure reducer A and a fire extinguishing assembly, wherein the foam box is arranged on the back frame;
the back frame is provided with a handle A and an upright post, the handle A and the upright post form a hollow groove together, and the back frame is also provided with an I-shaped groove;
the back frame is provided with a first plane, and the first plane is provided with a through hole A, a through hole B, a through hole C, a through hole D, a step hole A, a step hole B, a step hole C and a step hole D;
the back frame is provided with a through hole E and a through hole F, and the inner side of the back frame is also provided with a special-shaped groove;
the back frame is fixedly provided with a foam box, the left side surface and the right side surface of the foam box are respectively provided with a first groove, and the first grooves are provided with a threaded blind hole A, a threaded blind hole B, a threaded blind hole C and a threaded blind hole D;
the right side surface of the foam box is provided with a threaded blind hole E, a threaded blind hole F, a threaded blind hole G and a threaded blind hole H;
the top of the foam box is provided with a step, and the step is provided with a liquid inlet hole;
a second groove is formed in the bottom of the foam box, and a through hole G is formed in the second groove;
the left side and the right side of the foam box are both provided with steel cylinder fixing supports, the steel cylinder fixing supports are provided with arc surfaces, and the steel cylinder fixing supports are provided with special-shaped bosses;
the steel cylinder fixing support is provided with a mounting hole, and the mounting hole is provided with a step blind hole and a through hole H;
the steel cylinder fixing bracket is provided with a step groove;
the steel cylinder fixing bracket is provided with a second plane; the second plane is fixed on the right side face of the foam box and provided with a first groove, the mounting hole and the first groove are provided with a threaded blind hole A, a threaded blind hole B, a threaded blind hole C and a threaded blind hole D, the threaded blind hole A, the threaded blind hole B, the threaded blind hole C and the threaded blind hole D are fixed by screws, and the screws penetrate through the through holes H and are fixed on the step blind holes;
the steel cylinder fixing support is provided with an arc surface and a special-shaped boss, the arc surface and the special-shaped boss jointly act in the vertical direction to fix the first steel cylinder and the second steel cylinder on the steel cylinder fixing supports on the left side and the right side, the steel cylinder fixing binding belt penetrates through the steel cylinder fixing support to be provided with a step groove to fix the first steel cylinder and the second steel cylinder in the circumferential direction, and the first steel cylinder is arranged on the steel cylinder fixing supports in an inverted mode that a gas outlet of the first steel cylinder faces downwards;
the back frame is also provided with a pull rod.
As a further proposal of the utility model, the I-shaped groove is provided with a first transverse groove, a second transverse groove and a vertical groove; the first transverse groove is provided with a first through hole and a second through hole, and the second transverse groove is provided with a third through hole and a fourth through hole.
As a further aspect of the present invention, the step hole a, the step hole B, the step hole C, and the step hole D fix the strap on the back frame by screws.
As a further scheme of the utility model, the foam tank back is equipped with screw thread blind hole I, screw thread blind hole J, and screw thread blind hole K and screw thread blind hole L, and screw thread blind hole I, screw thread blind hole J, screw thread blind hole K and screw thread blind hole L are corresponding with through-hole A, through-hole B, through-hole C and through-hole D on the plane, adopt the screw to fix foam tank and back of the body frame together.
As a further proposal of the utility model, the first wheel and the second wheel are connected with the back frame by the rotating shaft.
As a further proposal of the utility model, the steps and the box cover are installed in a thread fit way.
As a further scheme of the utility model, first high-pressure cylinder valve adopts threaded connection mode to assemble first steel bottle, is equipped with first pressure reducer a on the first high-pressure cylinder valve, and first pressure reducer a adopts threaded connection mode to assemble first high-pressure cylinder valve.
As the utility model discloses a further scheme, second high-pressure cylinder valve adopts threaded connection mode to assemble the second steel bottle, is equipped with second pressure reducer A on the second high-pressure cylinder valve, and second pressure reducer A adopts threaded connection mode to assemble the second high-pressure cylinder valve.
As a further proposal of the utility model, the pull rod is provided with a through hole I, a first transverse groove and a second transverse groove.
As a further proposal of the utility model, the first transverse groove is provided with a first through hole and a second through hole, and the second transverse groove is provided with a third through hole and a fourth through hole.
Compared with the prior art, the beneficial effects of the utility model are that:
in the scheme of the application:
1. the straps are fixed on the back frame through the screws, so that the whole device can be carried on the back, the straps adopt an adjustable structural design, the use is convenient, the practicability is strong, and the device is suitable for most fires, especially high-rise fires, corridors and relatively narrow spaces and corridors;
2. the pull rod is provided with a handle B, and the handle B is matched with the first wheel and the second wheel for use; the whole device can be pushed and pulled, and the intensity of fire fighters in the process of rescuing and extinguishing fire is reduced.
3. After the pressure of gas filled in the first steel cylinder is adjusted to a proper value through the first high-pressure cylinder valve and the first pressure reducer A, the gas is connected to a breathing mask to provide air or oxygen required by firefighters, so that the life safety of the firefighters is ensured;
4. after the pressure of the gas filled in the second steel cylinder is adjusted to a proper value through a second high-pressure cylinder valve and a second pressure reducer A, the compressed air is respectively sent to the mixer and the air pump in two paths; the foam mixed liquid in the foam tank is delivered into the mixer through a pipeline by the pressure output by the second steel cylinder, and is fully mixed with the compressed air delivered by the second steel cylinder in the mixing cavity of the mixer to form qualified foam which is then ejected out for fire extinguishing operation; according to the type of fire and the real-time development condition of the fire, wet-type CAFS foam or dry-type CAFS fire extinguishing foam can be respectively provided by adjusting the switch valve, so that corresponding foam can be sprayed in different scenes, conversion is easy, and rescue time is saved.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a left side view of the present invention;
fig. 3 is an isometric view of the present invention;
fig. 4 is a schematic view of the back frame of the present invention;
fig. 5 is a 3D schematic view of the foam box of the present invention;
FIG. 6 is a rear view of the foam box of the present invention;
fig. 7 is a bottom view of the foam box of the present invention;
fig. 8 is a 3D schematic view of the steel cylinder holder of the present invention;
fig. 9 is a 3D schematic view of the tie bar of the present invention;
the following are marked in the figure:
1. a back frame; 11. a handle A; 13. hollowing out the grooves; 14. an I-shaped groove; 141. a first transverse groove; 142. a vertical groove; 143. a second transverse groove; 1411. a first through hole; 1412. a second through hole; 1431. a third through hole; 1432. a fourth via hole; 15. a first plane; 151. through holes A,152, B,153, C,154 and D; 155. stepped holes a,156, stepped holes B,157, stepped holes C,158, stepped hole D; 161. a through hole E; 162. a through hole F; 17. a special-shaped groove; 2. a foam box; 21. a first groove; 211. A threaded blind hole A; 212. a threaded blind hole B; 213. a threaded blind hole C; 214. a threaded blind hole D; 221. A threaded blind hole E; 222. a threaded blind hole F; 223. a threaded blind hole G; 224. a threaded blind hole H; 23. A step; 24. a liquid inlet hole; 241. a threaded blind hole I; 242. a threaded blind hole J; 243. a threaded blind hole K; 244. a threaded blind hole L; 26. a second groove; 261. a through hole G; 31. a first steel cylinder; 32. a second steel cylinder; 4. a steel cylinder fixing bracket; 41. arc surface 42, special boss; 431. mounting holes 4311 and step blind holes; 4312. a through hole H; 44. a step groove; 45. a second plane; 51. a first high pressure cylinder valve; 52. a second high-pressure cylinder valve 52; 61. a first wheel; 61. a second wheel 62; 7. a pull rod; 71. a through hole I; 72. a handle B; 8. a box cover; 9. an on-off valve; 10. a steel cylinder fixing bandage; 12. a column; 121. a first pressure reducer A; 122. a second stress-reducer a.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings; obviously, the described embodiments are some, but not all embodiments of the invention;
thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention;
it should be noted that, in the case of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other;
it should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures;
in the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, or the directions or positional relationships that the skilled person usually understands, and such terms are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention; moreover, the terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance;
as shown in fig. 1 to 9, the present embodiment proposes a backpack type premixed compressed air foam fire extinguishing apparatus, which includes a back frame 1, a foam tank 2, a first cylinder 31 and a second cylinder 32, a cylinder fixing bracket 4, a first high pressure cylinder valve 51, a second high pressure cylinder valve 52, a first wheel 61, a second wheel 62, a pull rod 7, a tank cover 8, a switch valve 9, a cylinder fixing strap 10, a first pressure reducer a121 and a second pressure reducer a122, and a fire extinguishing unit;
the backpack premixed compressed air foam fire extinguishing device is provided with a back frame 1, and is formed by blow molding of plastic materials through a blow molding process; the back frame 1 is provided with a handle A11 and an upright post 12, and the handle A11 and the upright post 12 form a hollow groove 13 together; by arranging the handle A11, the upright post 12 and the hollow groove 13, an operator can hold the back frame 1 by hands or can hang the back frame 1 by the hook, so that the fire extinguisher can be carried by the operator conveniently, and the fire extinguisher is more convenient to use;
the back frame 1 is provided with an I-shaped groove 14, and the I-shaped groove 14 is provided with a first transverse groove 141, a second transverse groove 143 and a vertical groove 142; the first transverse groove 141 is provided with a first through hole 1411 and a second through hole 1412, and the second transverse groove 143 is provided with a third through hole 1431 and a fourth through hole 1432;
the back frame 1 is provided with a plane 15, and the plane 15 is provided with a through hole A151, a through hole B152, a through hole C153, a through hole D154, a step hole A155, a step hole B156, a step hole C157 and a step hole D158; the shoulder straps are fixed on the back frame 1 through the step holes A155, B156, C157 and D158 through screws, the whole device can be carried on the back, the shoulder straps adopt adjustable structural design, the use is convenient, the practicability is strong, and the shoulder straps are suitable for most fires, especially high-rise fires, corridors and relatively narrow spaces and corridors;
the back frame 1 is provided with a through hole E161 and a through hole F162, the through hole E161 and the through hole F162 are used for fixing the first wheel 61 and the second wheel 62, and the first wheel 61 and the second wheel 62 are connected with the back frame through a rotating shaft;
the inner side of the back frame 1 is also provided with a special-shaped groove 17, and the special-shaped groove 17 is used for fixing a pipeline and guiding and limiting the pipeline;
the back frame 1 is fixedly provided with a foam box 2, and the foam box 2 is formed by blow molding of plastic materials through a blow molding process;
the left side surface and the right side surface of the foam box 2 are respectively provided with a first groove 21, and the first groove 21 is provided with a threaded blind hole A211, a threaded blind hole B212, a threaded blind hole C213 and a threaded blind hole D214;
the right side of the foam box 2 is provided with a threaded blind hole E221, a threaded blind hole F222, a threaded blind hole G223 and a threaded blind hole H224;
the top of the foam box 2 is provided with a step 23, the step 23 is provided with a liquid inlet hole 24, and the liquid inlet hole 24 is used for adding liquid such as foam liquid, water and the like; the step 23 and the box cover 8 are installed in a threaded fit mode, and the liquid inlet hole 24 of the foam box is sealed;
the back of the foam box 2 is provided with a threaded blind hole I241, a threaded blind hole J242, a threaded blind hole K243 and a threaded blind hole L244;
the threaded blind hole I241, the threaded blind hole J242, the threaded blind hole K243 and the threaded blind hole L244 correspond to the through hole A151, the through hole B152, the through hole C153 and the through hole D154 on the plane 15, and the foam box 2 and the back frame 1 are fixed together by screws;
the bottom of the foam box 2 is provided with a second groove 26, and the second groove 26 is provided with a through hole G261; the through hole G261 is used for discharging liquid including but not limited to foam concentrate, water and the like;
the left side and the right side of the foam box 2 are both provided with steel cylinder fixing supports 4, and the steel cylinder fixing supports 4 are formed by injection molding of plastic materials through an injection molding process;
the steel cylinder fixing support 4 is provided with an arc surface 41, and the steel cylinder fixing support 4 is provided with a special-shaped boss 42;
the steel cylinder fixing bracket 4 is provided with a mounting hole 431, and the mounting hole 431 is provided with a step blind hole 4311 and a through hole H4312;
the steel cylinder fixing bracket 4 is provided with a step groove 44;
the steel cylinder fixing bracket 4 is provided with a second plane 45; the second plane 45 is fixed on the right side surface of the foam box 2 and is provided with a first groove 21, the mounting hole 431 and the first groove 21 are provided with a threaded blind hole A211, a threaded blind hole B212, a threaded blind hole C213 and a threaded blind hole D214, the threaded blind hole A211, the threaded blind hole B212, the threaded blind hole C213 and the threaded blind hole D214 are fixed by screws, and the screws penetrate through the through holes H4312 and are fixed on the stepped blind holes 4311;
the steel cylinder fixing support 4 is provided with an arc surface 41 and a special-shaped boss 42, the first steel cylinder 31 and the second steel cylinder 32 are fixed on the steel cylinder fixing support 4 on the left side and the right side in the vertical direction under the combined action of the arc surface 41 and the special-shaped boss 42, the steel cylinder fixing bandage 10 penetrates through the steel cylinder fixing support 4 and is provided with a step groove 44, and the first steel cylinder 31 and the second steel cylinder 32 are fixed in the circumferential direction; the first cylinder 31 is preferably disposed on the cylinder fixing bracket 4 in an inverted manner with its gas outlet facing downward;
the first high-pressure cylinder valve 51 is assembled to the first cylinder 31 in a threaded connection; the first high-pressure cylinder valve 51 is provided with a first pressure reducer A121, and the first pressure reducer A121 is assembled to the first high-pressure cylinder valve 51 in a threaded connection mode; the gas filled in the first cylinder 31 is adjusted to a proper value through the first high-pressure cylinder valve 51 and the first pressure reducer A121, and then is connected to a breathing mask to provide air or oxygen required by firemen;
the second high-pressure cylinder valve 52 is assembled on the second high-pressure cylinder valve 52 of the second steel cylinder 32 in a threaded connection mode, a second pressure reducer A122 is arranged on the second high-pressure cylinder valve 52, and the second pressure reducer A122 is assembled on the second high-pressure cylinder valve 52 in a threaded connection mode; after the pressure of the gas filled in the second cylinder 32 is adjusted to a proper value through the second high-pressure cylinder valve 52 and the second pressure reducer a122, the compressed air is respectively sent to the mixer and the air pump in two paths; the foam mixed liquid in the foam box 2 is delivered into the mixer by the pressure output by the second steel cylinder 32 through a pipeline, and is fully mixed with the compressed air delivered by the second steel cylinder 32 in the mixing cavity of the mixer to form qualified foam which is then ejected out for fire extinguishing operation; according to the type of fire and the real-time development condition of the fire, wet-type CAFS foam or dry-type CAFS fire extinguishing foam can be respectively provided by adjusting the switch valve 9;
the back frame 1 is also provided with a pull rod 7, the pull rod 7 is provided with a through hole I71, a first transverse groove 141 and a second transverse groove 143, the first transverse groove 141 is provided with a first through hole 1411 and a second through hole 1412, the second transverse groove 143 is provided with a third through hole 1431 and a fourth through hole 1432, and the pull rod is fixed on the back frame 1 by fixing the through holes through screws; the pull rod 7 is provided with a handle B72, and the handle B72 is matched with the first wheel 61 and the second wheel 62 for use; the whole device can be pushed and pulled, and the intensity of fire fighters in the process of rescuing and extinguishing fire is reduced.
The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement may be made to the present invention; all the technical solutions and modifications without departing from the spirit and scope of the present invention are covered by the claims of the present invention.
Claims (10)
1. A backpack type premixed compressed air foam fire extinguishing device comprises a back frame (1), a foam box (2), a first steel cylinder (31) and a second steel cylinder (32), a steel cylinder fixing support (4), a first high-pressure cylinder valve (51), a second high-pressure cylinder valve (52), a first wheel (61), a second wheel (62), a pull rod (7), a box cover (8), a switch valve (9), a steel cylinder fixing bandage (10), a first pressure reducer A (121), a second pressure reducer A (122) and a fire extinguishing assembly;
the novel multifunctional electric heating chair is characterized in that the back frame (1) is provided with a handle A (11) and an upright post (12), the handle A (11) and the upright post (12) jointly form a hollow groove (13), and the back frame (1) is also provided with an I-shaped groove (14);
the back frame (1) is provided with a first plane (15), and the first plane (15) is provided with a through hole A (151), a through hole B (152), a through hole C (153), a through hole D (154), a step hole A (155), a step hole B (156), a step hole C (157) and a step hole D (158);
the back frame (1) is provided with a through hole E (161) and a through hole F (162), and the inner side of the back frame (1) is also provided with a special-shaped groove (17);
the back frame (1) is fixedly provided with a foam box (2), the left side surface and the right side surface of the foam box (2) are respectively provided with a first groove (21), and the first grooves (21) are provided with a threaded blind hole A (211), a threaded blind hole B (212), a threaded blind hole C (213) and a threaded blind hole D (214);
the right side of the foam box (2) is provided with a threaded blind hole E (221), a threaded blind hole F (222), a threaded blind hole G (223) and a threaded blind hole H (224);
the top of the foam box (2) is provided with a step (23), and the step (23) is provided with a liquid inlet hole (24);
a second groove (26) is formed in the bottom of the foam box (2), and a through hole G (261) is formed in the second groove (26);
the left side and the right side of the foam box (2) are both provided with steel cylinder fixing supports (4), the steel cylinder fixing supports (4) are provided with arc surfaces (41), and the steel cylinder fixing supports (4) are provided with special-shaped bosses (42);
the steel cylinder fixing support (4) is provided with a mounting hole (431), and the mounting hole (431) is provided with a step blind hole (4311) and a through hole H (4312);
the steel cylinder fixing bracket (4) is provided with a step groove (44);
the steel cylinder fixing support (4) is provided with a second plane (45); the second plane (45) is fixed on the right side face of the foam box (2) and provided with a first groove (21), a threaded blind hole A (211), a threaded blind hole B (212), a threaded blind hole C (213) and a threaded blind hole D (214) are arranged on the mounting hole (431) and the first groove (21), the threaded blind hole A (211), the threaded blind hole B (212), the threaded blind hole C (213) and the threaded blind hole D (214) are fixed through screws, and the screws penetrate through holes H (4312) and are fixed on the stepped blind holes (4311);
the steel cylinder fixing support (4) is provided with an arc surface (41) and a special-shaped boss (42), the arc surface (41) and the special-shaped boss (42) jointly act on the steel cylinder fixing support (4) for fixing the first steel cylinder (31) and the second steel cylinder (32) on the left side and the right side in the vertical direction, the steel cylinder fixing binding belt (10) penetrates through the steel cylinder fixing support (4) to be provided with a step groove (44), the first steel cylinder (31) and the second steel cylinder (32) are fixed in the circumferential direction, and the first steel cylinder (31) is arranged on the steel cylinder fixing support (4) in an inverted mode that a gas outlet of the first steel cylinder faces downwards;
the back frame (1) is also provided with a pull rod (7).
2. A backpack premixed compressed air foam fire extinguishing apparatus according to claim 1, wherein the i-channel (14) is provided with a first and a second transverse channel (141, 143) and a vertical channel (142); the first transverse groove (141) is provided with a first through hole (1411) and a second through hole (1412), and the second transverse groove (143) is provided with a third through hole (1431) and a fourth through hole (1432).
3. A premixed compressed air backpack foam fire extinguishing unit according to claim 1, wherein the stepped holes a (155), B (156), C (157) and D (158) are screwed to fix the harness to the back frame (1).
4. A premixed compressed air backpack foam fire extinguishing apparatus according to claim 1, wherein the foam tank (2) is provided with blind threaded holes I (241), J (242), K (243) and L (244) on the back, the blind threaded holes I (241), J (242), K (243) and L (244) correspond to the through holes a (151), B (152), C (153) and D (154) on the first plane (15), and the foam tank (2) and the back frame (1) are fixed together with screws.
5. A premixed compressed air foam fire fighting unit according to claim 1 characterized in that the first wheels (61) and the second wheels (62) are connected to the back frame (1) by means of a rotating shaft.
6. A backpack premixed compressed air foam fire extinguishing apparatus according to claim 1, wherein the step (23) is screw-fitted with the tank cover (8).
7. A backpack premixed compressed air foam fire extinguishing apparatus according to claim 1, wherein the first high pressure cylinder valve (51) is screw-coupled to the first cylinder (31), the first high pressure cylinder valve (51) is provided with a first pressure reducer a (121), and the first pressure reducer a (121) is screw-coupled to the first high pressure cylinder valve (51).
8. A premixed compressed air piggy-back fire fighting device according to claim 1 wherein the second bomb valve (52) is screw-fitted to the second bomb (32), the second bomb valve (52) being provided with a second pressure reducer a (122), the second pressure reducer a (122) being screw-fitted to the second bomb valve (52).
9. A backpack premixed compressed air foam fire extinguishing apparatus according to claim 1, wherein the tie rod (7) is provided with a through hole I (71), a first transversal groove (141) and a second transversal groove (143).
10. A backpack premixed compressed air foam fire extinguishing device according to claim 9, wherein the first transversal groove (141) is provided with a first through hole (1411) and a second through hole (1412), and the second transversal groove (143) is provided with a third through hole (1431) and a fourth through hole (1432).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221132518.7U CN218187609U (en) | 2022-05-12 | 2022-05-12 | Backpack premixed compressed air foam fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221132518.7U CN218187609U (en) | 2022-05-12 | 2022-05-12 | Backpack premixed compressed air foam fire extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218187609U true CN218187609U (en) | 2023-01-03 |
Family
ID=84646627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221132518.7U Active CN218187609U (en) | 2022-05-12 | 2022-05-12 | Backpack premixed compressed air foam fire extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218187609U (en) |
-
2022
- 2022-05-12 CN CN202221132518.7U patent/CN218187609U/en active Active
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