Backpack fire extinguishing device for fire fighting

Abstract

The invention discloses a backpack fire extinguishing device for fire fighting, and relates to the technical field of fire fighting. The backpack fire extinguishing device comprises a back plate, and a fixing belt for backpack is fixedly arranged on one side of the back plate; the supporting frame is fixedly arranged on the back plate, and the supporting frame and the fixing belt are located on different sides of the back plate; the high-pressure gas cylinder is detachably and fixedly arranged in the center of the upper portion of the supporting frame, and the high-pressure gas cylinder is fixed with the assistance of the back plate; the two premixed liquid storage assemblies are symmetrically arranged relative to the high-pressure gas cylinder, and the premixed liquid storage assemblies and the back plate are fixedly arranged; the valve assembly is connected with the high-pressure gas cylinder and the premixed liquid storage assembly, and the valve assembly is additionally connected with a spray gun used for outputting a fire extinguishing agent; the spray gun support is fixedly arranged on the supporting frame, and the spray gun support is used for containing the spray gun.

Description

Technical Field

[0001] The present application relates to the field of fire fighting technology, and in particular to a backpack fire extinguishing device for fire fighting. Background Art

[0002] The compressed air foam technology system (CAFS) is a highly efficient foam fire-fighting method. The backpack-type CAFS equipment is flexible and portable, and has obvious advantages in emergency fire-fighting in special, complex, and narrow environments. In addition, the detachable and assembled equipment of the CAFS system adopts positive pressure foaming, and the foam has uniform foaming multiples, a long spray distance, and a high fire-fighting level. At the same time, it uses a standard empty exhalation bottle as the power source, and the structure is further simplified with very good stability.

[0003] However, in actual use, the device has a poor fit when carried on the back, the gas and liquid are consumed asynchronously, and the liquid's volume decreases as it is used in the tank and the amplitude of shaking increases, causing the center of gravity of the device to change beyond the suitable adjustment range for the human body, resulting in uneven pressure distribution on the back, affecting human movement.

[0004] Therefore, it is necessary to provide a backpack fire extinguishing device for fire fighting to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above purpose, the present application provides the following technical solution: a backpack fire extinguishing device for fire fighting, comprising:

[0006] A back plate, one side of which is fixedly provided with a fixing belt for carrying;

[0007] A support frame, fixedly disposed on the back plate, wherein the support frame and the fixing belt are located on different sides of the back plate;

[0008] A high-pressure gas cylinder is detachably fixedly arranged at the center above the support frame, and the high-pressure gas cylinder is fixed with the aid of the back plate;

[0009] Two premix liquid storage assemblies are symmetrically arranged with respect to the high-pressure gas cylinder, and the premix liquid storage assemblies are fixedly arranged with the back plate;

[0010] A valve assembly, connecting the high-pressure gas cylinder and the premixed liquid storage assembly, and the valve assembly is additionally connected to a spray gun for outputting a fire extinguishing agent;

[0011] The spray gun bracket is fixedly arranged on the support frame, and the spray gun bracket is used to place the spray gun.

[0012] Further, preferably, the valve assembly comprises:

[0013] A liquid circuit proportional regulating valve, one end of which is connected to the premixed liquid storage component, and a pneumatic diaphragm pump is provided between the liquid circuit proportional regulating valve and the premixed liquid storage component;

[0014] A gas circuit proportional regulating valve, one end of which is connected to the high-pressure gas cylinder, and the other end of which is connected to a mixing and foaming chamber, and the mixing and foaming chamber is connected to the other end of the liquid circuit proportional regulating valve, and an output pipe is additionally connected to the mixing and foaming chamber;

[0015] A pressure gauge is fixedly arranged on the mixing and foaming chamber, and an input end of the pressure gauge extends to the gas circuit proportional regulating valve and the high-pressure gas cylinder connecting section.

[0016] Further, preferably, the premix liquid storage component comprises:

[0017] A fixed sleeve, fixedly arranged on the back plate, in which a storage tank is fixedly arranged;

[0018] A support base, fixedly disposed in the fixing sleeve, and the support base is located below the storage tank;

[0019] The sealing components are arranged in two groups and are respectively disposed inside the storage tank close to the upper and lower ends;

[0020] The regulating assembly is arranged inside the storage tank.

[0021] Further, preferably, a connecting hole is provided in the storage tank at a position corresponding to the sealing assembly.

[0022] Further, preferably, the sealing assembly comprises:

[0023] A sealing cover plate, sealed and clamped and fixed inside the storage tank;

[0024] A central boss is fixedly arranged on the sealing cover plate, and fixed threaded holes are symmetrically opened on the side surfaces of the central boss;

[0025] A supporting screw passes through the communicating hole and extends into the fixing threaded hole.

[0026] Further, preferably, in the sealing assembly located at the top, a closable liquid filling port is provided on the sealing cover plate.

[0027] Further, preferably, the adjustment component comprises:

[0028] A central shaft, which passes through the central boss and the support base, the central shaft rotates relative to the central boss and the support base, and the lower end of the central shaft is used to connect to an external motor;

[0029] A fixed support plate, one side of which is embedded in the inner wall of the storage tank and the other side of which is sealed against the central axis, and the upper and lower ends of the fixed support plate are both embedded in the sealing cover plate;

[0030] A movable support plate, one side of which is embedded on the central axis, and the other side of which is sealed against the inner wall of the storage tank, and the upper and lower sides of which are in contact with the sealing cover plate;

[0031] A transfer pipe is connected to the interior of the storage tank, and the transfer pipe is located between the fixed support plate and the back plate.

[0032] Further, as a preference, the fixed support plate is positioned close to the high-pressure gas cylinder, the movable support plate rotates following the central axis, the space between the movable support plate and the fixed support plate including the transfer tube is a storage chamber, and the side of the fixed support plate away from the back plate is a starting side, and the side of the fixed support plate close to the back plate is an ending side.

[0033] Compared with the prior art, the present application provides a backpack fire extinguishing device for fire fighting, which has the following beneficial effects:

[0034] In the present application, the movable support plate rotates with the central axis, and the movable support plate moves back and forth between the starting side and the ending side, thereby adjusting the storage chamber to follow the real-time changes of the remaining amount of the configured solution, limiting the shaking of the configured solution inside the storage tank, especially in the lateral shaking amplitude, so as to avoid adding too much additional inertia to the human body, and at the same time avoid the center of gravity of the device deviating from the main force-bearing area of ​​the human body, effectively improving the balance and comfort of human activities, and adopting the method of the movable support plate moving relative to the fixed support plate to adjust the change of the storage chamber space. Compared with the ordinary piston type, the adjustment range is smaller, avoiding the additional increase in the volume of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0036] Figure 1 It is a schematic diagram of the overall structure of a backpack fire extinguishing device for fire fighting;

[0037] Figure 2 It is a schematic diagram of the structure of a valve assembly of a backpack fire extinguishing device for fire fighting;

[0038] Figure 3 A schematic diagram of the structure of a premixed liquid storage component of a backpack fire extinguishing device for fire fighting;

[0039] Figure 4 It is an enlarged schematic diagram of a sealing component of a backpack fire extinguishing device for fire fighting;

[0040] Figure 5 A schematic diagram of the working process of a backpack fire extinguishing device for fire fighting;

[0041] In the figure: 1. back plate; 2. fixing belt; 3. support frame; 4. high-pressure gas cylinder; 5. valve assembly; 51. liquid circuit proportional control valve; 52. pneumatic diaphragm pump; 53. gas circuit proportional control valve; 54. mixing foaming chamber; 55. pressure gauge; 56. output pipe; 6. premixed liquid reserve assembly; 61. fixed sleeve; 62. storage tank; 621. connecting hole; 63. support base; 64. sealing assembly; 641. sealing cover plate; 642. center boss; 643. liquid filling port; 644. support screw; 65. adjustment assembly; 651. center axis; 652. fixed support plate; 653. movable support plate; 66. transfer tube; 67. starting side; 68. ending side; 7. spray gun bracket. DETAILED DESCRIPTION

[0042] See also Figure 1-5 In an embodiment of the present application, a backpack fire extinguishing device for fire fighting includes:

[0043] A back plate 1, one side of which is fixedly provided with a fixing belt 2 for carrying;

[0044] A support frame 3 is fixedly disposed on the back plate 1, and the support frame 3 and the fixing belt 2 are located on different sides of the back plate 1;

[0045] The high-pressure gas cylinder 4 is detachably fixed at the center above the support frame 3, and the high-pressure gas cylinder 4 is fixed with the aid of the back plate 1. Specifically, a replaceable gas cylinder style is adopted, which can effectively improve the applicability of the device;

[0046] The premix liquid storage assembly 6 is symmetrically arranged in two with respect to the high-pressure gas cylinder 4, and the premix liquid storage assembly 6 is fixedly arranged with the back plate 1, and the premix liquid storage assembly 6 is specifically filled with the configuration solution prepared in advance;

[0047] A valve assembly 5 is connected to the high-pressure gas cylinder 4 and the premixed liquid storage assembly 6, and the valve assembly 5 is additionally connected to a spray gun for outputting a fire extinguishing agent;

[0048] The spray gun bracket 7 is fixedly arranged on the support frame 3, and the spray gun bracket 7 is used to place the spray gun.

[0049] It needs to be explained that in the present application, the compressed gas in the high-pressure gas cylinder 4 impacts and rubs the configured solution output by the premixed liquid reserve component 6 in the valve component 5 to produce fine foam, which is then output through the spray gun to extinguish the fire. The main technical indicators are as follows: the high-pressure gas cylinder 4 adopts a compressed air cylinder with a pressure of 30Mpa and a volume of 6L. The configured solution in the premixed liquid reserve component 6 is a mixture of Class A foam fire extinguishing agent and water at a ratio of 0.8%. The premixed liquid reserve component 6 can be loaded with 15L. When the working pressure is 0.8Mpa, the spraying time is 90s, the range is ≥10m, the foaming multiple is ≥5, and the fire extinguishing level is 4A.

[0050] It needs to be explained that when the device is carried on the back of the human body through the fixing belt 2, the shoulders of the human body and the waist dimples above the coccyx of the human body are the main bearing points of the back, and the waist dimples connected to the top of the shoulders are the main force-bearing areas. The displacement of the center of gravity of the device within the main force-bearing area can be shared by the main bearing points. The center of gravity of the device is usually placed on the waist, and the fixing belt 2 plays the main load-bearing role. Therefore, the high-pressure gas cylinder 4 is placed in the middle and the premixed liquid storage components 6 are arranged on both sides, so that the center of gravity of the device is located at the waist.

[0051] In this embodiment, Figure 2 , the valve assembly 5 comprises:

[0052] A liquid circuit proportional regulating valve 51, one end of which is connected to the premixed liquid reserve component 6, and a pneumatic diaphragm pump 52 is provided between the liquid circuit proportional regulating valve 51 and the premixed liquid reserve component 6, specifically, the pneumatic diaphragm pump 52 is used to extract the configuration solution in the premixed liquid reserve component 6, and the output of the configuration solution is controlled by the liquid circuit proportional regulating valve 51;

[0053] The gas circuit proportional regulating valve 53 has one end connected to the high-pressure gas cylinder 4 and the other end connected to a mixing foaming chamber 54. Specifically, the gas circuit proportional regulating valve 53 is used to adjust the output of the compressed gas in the high-pressure gas cylinder 4, and the mixing foaming chamber 54 is connected to the other end of the liquid circuit proportional regulating valve 51, and the mixing foaming chamber 54 is additionally connected to an output pipe 56. Specifically, the compressed gas in the mixing foaming chamber 54 promotes the expansion of the configured solution to form foam, which is output through the output pipe 56;

[0054] The pressure gauge 55 is fixedly arranged on the mixing and foaming chamber 54 , and the input end of the pressure gauge 55 extends to the connecting section between the gas circuit proportional regulating valve 53 and the high-pressure gas cylinder 4 . Specifically, the pressure gauge 55 is used to monitor the gas pressure of the high-pressure gas cylinder 4 .

[0055] In this embodiment, Figure 3 , the premix liquid storage component 6 comprises:

[0056] A fixed sleeve 61 is fixedly arranged on the back plate 1, and a storage tank 62 is fixedly arranged inside the fixed sleeve 61. Specifically, the storage tank 62 is used to place the configuration solution;

[0057] A support base 63 is fixedly disposed in the fixing sleeve 61, and the support base 63 is located below the storage tank 62;

[0058] The sealing components 64 are arranged in two groups and are respectively disposed in the storage tank 62 near the upper and lower ends. Specifically, the sealing components 64 form a closed storage space in the storage tank 62.

[0059] The regulating assembly 65 is disposed inside the storage tank 62 .

[0060] As a preferred embodiment, a connecting hole 621 is opened at the storage tank 62 corresponding to the position of the sealing assembly 64 .

[0061] In this embodiment, Figure 4 , the sealing assembly 64 comprises:

[0062] A sealing cover plate 641, which is sealed and fixed inside the storage tank 62;

[0063] The central boss 642 is fixedly disposed on the sealing cover plate 641, and the side surfaces of the central boss 642 are symmetrically provided with fixing threaded holes;

[0064] The support screw 644 passes through the connecting hole 621 and extends into the fixing threaded hole, and is specifically used to keep the sealing cover plate 641 and the storage tank 62 fixed.

[0065] As a preferred embodiment, in the sealing assembly 64 located at the top, a closable liquid filling port 643 is provided on the sealing cover plate 641, which is specifically used for the subsequent addition of the configuration solution.

[0066] It needs to be explained that during activities, the center of gravity of the carried object is balanced by the waist and shoulders, and the main force-bearing area is an inverted triangle that is wide at the top and narrow at the bottom. Because the center of gravity cannot be placed between the shoulders for a long time, the appropriate offset range of the center of gravity of the corresponding device is limited to the vertical direction. Horizontal lateral offset of the center of gravity on both sides of the waist will cause the center of gravity to exceed the main force-bearing area, affecting human activities.

[0067] In this embodiment, Figure 4-5 , the adjustment component 65 includes:

[0068] The central shaft 651 passes through the central boss 642 and the support base 63. The central shaft 651 rotates relative to the central boss 642 and the support base 63. The lower end of the central shaft 651 is used to connect to an external motor. Specifically, the external motor controls and drives the central shaft 651 to rotate.

[0069] A fixed support plate 652, one side of which is embedded in the inner wall of the storage tank 62, and the other side is sealed against the central axis 651, and the upper and lower ends of the fixed support plate 652 are both embedded in the sealing cover plate 641;

[0070] A movable support plate 653, one side of which is embedded on the central shaft 651, and the other side of which is sealed against the inner wall of the storage tank 62, and the upper and lower sides of which are in contact with the sealing cover plate 641;

[0071] The transfer tube 66 is connected to the interior of the storage tank 62 , and the transfer tube 66 is located between the fixed support plate 652 and the back plate 1 . Specifically, the transfer tube 66 is used to connect the storage tank 62 and the valve assembly 5 .

[0072] As a preferred embodiment, the fixed support plate 652 is located close to the high-pressure gas cylinder 4, the movable support plate 653 rotates with the central axis 651, the space between the movable support plate 653 and the fixed support plate 652 including the transfer tube 66 is a storage chamber, and the side of the fixed support plate 652 away from the back plate 1 is the starting side 67, and the side of the fixed support plate 652 close to the back plate 1 is the ending side 68. Specifically, when adding the configuration solution, the movable support plate 653 is controlled to be located at the starting side 67. At this time, the storage chamber space is the largest, the movable support plate 653 rotates with the central axis 651, and the movable support plate 653 moves back and forth between the starting side 67 and the ending side 68, thereby adjusting the storage chamber to follow the real-time changes of the remaining amount of the configuration solution, limiting the shaking of the configuration solution inside the storage tank 62, especially in the lateral shaking amplitude, so as to avoid adding too much additional inertia to the human body, and at the same time avoid the center of gravity of the device deviating from the main force-bearing area of ​​the human body, effectively improving the balance and comfort of human activities.

[0073] In addition, the device uses the movable support plate 653 to move relative to the fixed support plate 652 to adjust the storage chamber space change. Compared with the ordinary piston type, the adjustment range required is smaller, avoiding additional increase in the device volume.

[0074] In specific implementation, the compressed gas in the high-pressure gas cylinder 4 impacts the configured solution output by the friction premixed liquid reserve component 6 in the valve component 5 to generate fine foam, which is then output through the spray gun to extinguish the fire. During this period, the configured solution in the premixed liquid reserve component 6 is extracted by the pneumatic diaphragm pump 52, and the output of the configured solution is controlled by the liquid circuit proportional regulating valve 51, and the output of the compressed gas in the high-pressure gas cylinder 4 is adjusted by the gas circuit proportional regulating valve 53.

[0075] During use, the movable support plate 653 rotates with the central axis 651, and the movable support plate 653 moves back and forth between the starting side 67 and the ending side 68, thereby adjusting the storage chamber to follow the real-time changes in the remaining amount of the configuration solution, thereby limiting the shaking of the configuration solution inside the storage tank 62. In addition, the configuration solution can be added through the liquid filling port 643, and the high-pressure gas cylinder 4 can also be replaced.

[0076] What has been described above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and application concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A backpack fire extinguishing device for fire fighting, characterized in that: include: A back plate (1) having a carrying strap (2) fixedly disposed on one side thereof; A support frame (3) is fixedly arranged on the back plate (1), and the support frame (3) and the fixing belt (2) are located on different sides of the back plate (1); A high-pressure gas cylinder (4) is detachably fixedly arranged at the center above the support frame (3), and the high-pressure gas cylinder (4) is fixed with the aid of the back plate (1); Two premix liquid storage assemblies (6) are symmetrically arranged with respect to the high-pressure gas cylinder (4), and the premix liquid storage assemblies (6) are fixedly arranged on the back plate (1); A valve assembly (5) is connected to the high-pressure gas cylinder (4) and the premixed liquid storage assembly (6), and the valve assembly (5) is additionally connected to a spray gun for outputting a fire extinguishing agent; A spray gun bracket (7) is fixedly arranged on the support frame (3), and the spray gun bracket (7) is used to place the spray gun.

2. A backpack fire extinguishing device for firefighting according to claim 1, characterized in that: The valve assembly (5) comprises: A liquid circuit proportional regulating valve (51), one end of which is connected to the premixed liquid storage assembly (6), and a pneumatic diaphragm pump (52) is provided between the liquid circuit proportional regulating valve (51) and the premixed liquid storage assembly (6); A gas circuit proportional regulating valve (53), one end of which is connected to the high-pressure gas cylinder (4), and the other end of which is connected to a mixing and foaming chamber (54), and the mixing and foaming chamber (54) is connected to the other end of the liquid circuit proportional regulating valve (51), and an output pipe (56) is additionally connected to the mixing and foaming chamber (54); A pressure gauge (55) is fixedly arranged on the mixing and foaming chamber (54), and an input end of the pressure gauge (55) extends to the connecting section between the gas circuit proportional regulating valve (53) and the high-pressure gas cylinder (4).

3. A backpack fire extinguishing device for firefighting according to claim 1, characterized in that: The premix storage component (6) comprises: A fixed sleeve (61) fixedly arranged on the back plate (1), wherein a storage tank (62) is fixedly arranged inside the fixed sleeve; A support base (63) is fixedly disposed in the fixing sleeve (61), and the support base (63) is located below the storage tank (62); The sealing components (64) are arranged in two groups and are respectively disposed in the storage tank (62) near the upper and lower ends; The regulating assembly (65) is arranged inside the storage tank (62).

4. A backpack fire extinguishing device for firefighting according to claim 3, characterized in that: The storage tank (62) is provided with a communication hole (621) at a position corresponding to the sealing assembly (64).

5. A backpack fire extinguishing device for firefighting according to claim 4, characterized in that: The sealing assembly (64) comprises: A sealing cover plate (641) is sealed and fixed inside the storage tank (62); A central boss (642) is fixedly arranged on the sealing cover plate (641), and a fixing threaded hole is symmetrically opened on the side surface of the central boss (642); A supporting screw (644) passes through the communicating hole (621) and extends into the fixing threaded hole.

6. A backpack fire extinguishing device for firefighting according to claim 5, characterized in that: In the sealing assembly (64) located at the top, a closable liquid filling port (643) is provided on the sealing cover plate (641).

7. A backpack fire extinguishing device for firefighting according to claim 3, characterized in that: The adjustment component (65) comprises: A central shaft (651) passes through the central boss (642) and the support base (63); the central shaft (651) rotates relative to the central boss (642) and the support base (63); and the lower end of the central shaft (651) is used to connect to an external motor; A fixed support plate (652), one side of which is embedded in the inner wall of the storage tank (62), and the other side of which is sealed against the central axis (651), and the upper and lower ends of the fixed support plate (652) are both embedded in the interior of the sealing cover plate (641); A movable support plate (653), one side of which is embedded on the central axis (651), and the other side of which is sealed against the inner wall of the storage tank (62), and the upper and lower sides of the movable support plate (653) are in contact with the sealing cover plate (641); A transfer tube (66) is connected to the interior of the storage tank (62), and the transfer tube (66) is located between the fixed support plate (652) and the back plate (1).

8. A backpack fire extinguishing device for firefighting according to claim 7, characterized in that: The fixed support plate (652) is located close to the high-pressure gas cylinder (4), the movable support plate (653) rotates along with the central axis (651), the space between the movable support plate (653) and the fixed support plate (652) including the transfer tube (66) is a storage chamber, and the side of the fixed support plate (652) away from the back plate (1) is a starting side (67), and the side of the fixed support plate (652) close to the back plate (1) is a termination side (68).

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