CN216169544U

CN216169544U - Compressed air foam fire extinguishing device

Info

Publication number: CN216169544U
Application number: CN202122583106.7U
Authority: CN
Inventors: 陆兆勇
Original assignee: Guangdong Ruilin Special Equipment Manufacturing Co ltd
Current assignee: Guangdong Ruilin Special Equipment Manufacturing Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-04-05
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a compressed air foam fire extinguishing device which comprises a foam pump assembly, a water supply assembly, a mixing assembly and a driving assembly, wherein the foam pump assembly comprises a foam pump, the water supply assembly comprises a fire pump, the air supply assembly comprises an air compressor, the mixing assembly is connected with the foam pump, the fire pump and the air compressor and is used for mixing foam liquid, water and compressed air to generate and output a compressed air foam extinguishing agent; the driving assembly is connected with the fire pump, the air compressor and the foam pump through the linkage assembly to transmit power of the driving assembly. The device is driven by a single power source through the linkage effect of the linkage assembly among the driving assembly, the fire pump, the air compressor and the foam pump, and extinguishes fire by selecting different working conditions according to different fires, so that the device is applied to different fires, has high applicability and simple operation, outputs the compressed air foam extinguishing agent by one key, has strong maneuverability, can operate in a limited space where a fire truck cannot reach, and has good fire extinguishing effect.

Description

Compressed air foam fire extinguishing device

Technical Field

The embodiment of the utility model relates to the technical field of fire fighting, in particular to a compressed air foam fire extinguishing device.

Background

At present, different fire extinguishing modes are often adopted to extinguish fire according to different fire conditions. Wherein the fire extinguishing mode comprises foam fire extinguishing, dry powder fire extinguishing and the like; however, the existing fire extinguishing apparatus usually has a single fire extinguishing mode, cannot flexibly cope with different fire conditions, and has low applicability, and on the other hand, the compressed air foam fire extinguishing apparatus is popularized and applied in a limited space in the direction of miniaturization development, and the technology of high-density integration degree needs to be further developed and improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a compressed air foam fire extinguishing device, which is used for solving the problems of poor fire extinguishing effect, low applicability, small size and poor high-density integration degree of a fire extinguishing agent generated by the conventional foam generating device.

In order to solve the above technical problems, an aspect of an embodiment of the present invention provides a compressed air foam fire extinguishing apparatus, including:

the foam pump assembly is arranged in the frame and comprises a foam pump, and the foam pump is used for conveying foam liquid;

the water supply assembly is arranged in the rack and comprises a fire pump, and the fire pump is used for conveying water;

the air supply assembly is arranged in the rack and comprises an air compressor, and the air compressor is used for conveying compressed air;

a mixing assembly disposed within the frame, the mixing assembly coupled to the foam pump, the fire pump, and the air compressor, the mixing assembly configured to mix foam concentrate, water, and compressed air to generate and output a compressed air foam fire suppressant; and

the drive assembly, set up in the frame, drive assembly passes through the linkage subassembly and connects the fire pump the air compressor machine with the foam pump, in order to transmit drive assembly's power, and then the drive the fire pump the air compressor machine with the foam pump.

Optionally, the linkage assembly comprises:

the first driving wheel and the second driving wheel are rotatably connected to the driving assembly;

the third driving wheel is rotationally connected with the air compressor and is linked with the first driving wheel through a first driving belt so as to drive the air compressor; and

the fourth driving wheel is sleeved and fixed on the first driving shaft of the gearbox and is connected to the gearbox in a rotating mode, and the fourth driving wheel is linked with the second driving wheel through a second driving belt; the fire pump is driven by the linkage action of the fourth driving wheel and the first linkage assembly; the foam pump is driven by the linkage effect of the fourth transmission wheel and the second linkage assembly.

Optionally, the first linkage assembly further comprises:

the fifth transmission wheel is rotationally connected to the gearbox, the first transmission shaft penetrates through the fifth transmission wheel, and a gap exists between the peripheral surface of the first transmission shaft and the fifth transmission wheel;

the first clutch is sleeved on the first transmission shaft;

the sixth driving wheel is sleeved and fixed on the main shaft of the fire pump and is rotationally connected with the fire pump, and the sixth driving wheel is linked with the fifth driving wheel through a third driving belt; and

the control assembly is used for pneumatically controlling the first clutch so as to control the contact and the separation between the first clutch and the fifth driving wheel;

the fire pump is driven by the linkage effect of the fourth driving wheel, the fifth driving wheel, the third driving belt and the sixth driving wheel and the contact between the fifth driving wheel and the first clutch.

Optionally, the second linkage assembly further comprises:

the seventh driving wheel is sleeved and fixed on the first driving shaft and is connected to the gearbox in a rotating manner;

the second clutch is sleeved on the main shaft of the foam pump;

the eighth driving wheel is sleeved and fixed on a second transmission shaft of the gearbox and is rotatably connected to the gearbox, the axis of the second transmission shaft is collinear with the axis of the main shaft of the foam pump, and the eighth driving wheel is linked with the seventh driving wheel through a fourth transmission belt; and

the control assembly is used for pneumatically controlling the second clutch so as to control the contact and the separation between the second clutch and the eighth driving wheel;

the foam pump is driven by the linkage action of the fourth driving wheel, the seventh driving wheel, the fourth driving belt and the eighth driving wheel and the contact between the eighth driving wheel and the second clutch.

Optionally, the water supply assembly comprises:

one end of the first water delivery pipe is connected with the fire pump, and the other end of the first water delivery pipe is externally connected with a water storage tank or a municipal fire hydrant;

one end of the second water pipe is connected with the fire pump, and the other end of the second water pipe is connected with the mixing assembly;

the water flow meter is arranged on the second water conveying pipe and is electrically connected with the control assembly;

and the water flow control valve is arranged on the second water conveying pipe and is electrically connected with the control assembly.

Optionally, the foam pump assembly comprises:

the foam liquid box is used for providing foam liquid;

the first end of the three-way valve is connected with the foam liquid tank and used for conveying foam liquid in the foam liquid tank, the second end of the three-way valve is used for conveying foam liquid, and the third end of the three-way valve is used for connecting an external foam liquid storage tank and used for conveying foam liquid in the external foam liquid storage tank; and

and the foam liquid conveying pipe is communicated with the second end and the second water conveying pipe, conveys the foam liquid to the second water conveying pipe, and is mixed with the water in the second water conveying pipe to form a mixed liquid.

Optionally, a foam concentrate regulating valve is arranged on the foam concentrate conveying pipe, and the foam concentrate regulating valve is electrically connected to the control assembly.

Optionally, the device further comprises a heat exchanger, wherein the heat exchanger is used for cooling the compressed air delivered by the air compressor;

the gas supply assembly further includes:

one end of the first compressed air conveying pipe is connected with the air compressor, and the other end of the first compressed air conveying pipe is connected with an air inlet of the heat exchanger; and

at least one second compressed air delivery pipe connecting the air outlet of the heat exchanger and the mixing assembly;

the heat exchanger is also used for cooling the engine oil in the air compressor, and an oil inlet and an oil outlet in the heat exchanger are respectively connected with the air compressor.

Optionally, a compressed air regulating valve is disposed on the second compressed air delivery pipe, and the compressed air regulating valve is electrically connected to the control assembly.

Optionally, the mixing assembly comprises:

a mixer connecting the at least one second compressed air delivery pipe and the second water delivery pipe; and

one end of the fire extinguishing agent conveying pipe is connected with the mixer, and one end of the fire extinguishing agent conveying pipe is provided with an outlet which is used for outputting water or compressed air foam extinguishing agent.

The embodiment of the utility model has the following beneficial effects: rely on single power supply to drive through the linkage effect of linkage subassembly between drive assembly and fire pump, air compressor machine and foam pump compressed air foam extinguishing device selects different operating modes to put out a fire according to the condition of a fire of difference, makes the device can export water or compressed air foam extinguishing agent, so that the device is applied to different conditions of a fire, and the suitability is higher, just each part of device all sets up in the frame, the device volume is less, and the integrated level is higher, and mobility is strong, can not reach the operation in the restricted space that the fire engine can not reach, and fire extinguishing effect is better, is particularly useful for the conflagration initial stage, easy operation, and the speed of putting out a fire is fast.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of a first angle of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of a second angle of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 3 is a third angle overall view of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 4 is a fourth angle overall view of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic view of the fifth angle overall configuration of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 6 is a sixth angle overall view of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 7 is an exploded view of a portion of the construction of a compressed air foam fire suppression apparatus according to an embodiment of the present invention;

FIG. 8 is a seventh angle schematic view of a partial structure of a compressed air foam fire extinguishing apparatus according to an embodiment of the present invention;

FIG. 9 is a structural view of an eighth angle of partial structure of a compressed air foam fire extinguishing apparatus according to an embodiment of the present invention;

FIG. 10 is a ninth-angle structural view of a partial structure of a compressed air foam fire-extinguishing device according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a tenth angle of a transmission case and a foam pump in the compressed air foam fire extinguishing apparatus according to the embodiment of the present invention;

FIG. 12 is a schematic structural view of an eleventh angle between a transmission case and a foam pump in the compressed air foam fire extinguishing apparatus according to the embodiment of the present invention;

FIG. 13 is a twelfth angle view of the transmission case and the foam pump in the compressed air foam fire extinguishing apparatus according to the embodiment of the present invention;

FIG. 14 is a schematic structural view of a thirteenth angle between a transmission case and a foam pump in the compressed air foam fire extinguishing apparatus according to the embodiment of the present invention;

FIG. 15 is a schematic structural view of a fourteenth angle between the transmission case and the foam pump in the compressed air foam fire extinguishing apparatus according to the embodiment of the present invention;

fig. 16 is a schematic view showing the connection among the control module, the foam pump module, the air supply module, the water supply module, the mixing module, the first clutch and the second clutch in the compressed air foam fire extinguishing apparatus according to the embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

As shown in fig. 1 to 16, an embodiment of the present invention provides a compressed air foam fire extinguishing apparatus, including: frame 10, foam pump assembly 20, water supply assembly 30, air supply assembly 40, mixing assembly 50, and drive assembly 60. Wherein the foaming pump assembly 20, the water supply assembly 30, the air supply assembly 40, the mixing assembly 50 and the driving assembly 60 are all disposed in the frame 10; the foam pump assembly 20 comprises a foam pump 21, wherein the foam pump 21 is used for delivering foam concentrate; the water supply assembly 30 comprises a fire pump 31, the fire pump 31 being for delivering water; the air supply assembly 40 comprises an air compressor 43, and the air compressor 43 is used for conveying compressed air; the mixing assembly 50 is connected to the foam pump 21, the fire pump 31 and the air compressor 43, the mixing assembly 50 is used for mixing foam concentrate, water and compressed air to generate and output compressed air foam extinguishing agent; the driving assembly 60 is connected to the fire pump 31, the air compressor 43 and the foam pump 21 through a linkage assembly to transmit the power of the driving assembly 60, so as to drive the fire pump 31, the air compressor 43 and the foam pump 21. Wherein the device comprises an air storage tank 46, and the air storage tank 46 is connected with the air compressor 43. The drive assembly 60 is configured as a gasoline powered system.

The embodiment of the utility model drives the compressed air foam fire extinguishing device by means of a single power source and the linkage action of the linkage assembly among the driving assembly 60, the fire pump 31, the air compressor 43 and the foam pump 21, and extinguishes fire by selecting different working conditions according to different fire conditions, so that the device can output water or compressed air foam fire extinguishing agents, is applied to different fire conditions, has higher applicability and better fire extinguishing effect, is particularly suitable for the initial stage of fire, is simple to operate and has high fire extinguishing speed. In addition, in the embodiment, each component of the device is arranged in the rack, the device has a small volume and high integration level; the device sets up to miniaturized high-effect compressed air foam extinguishing device, and the on-vehicle type compressed air foam extinguishing device and fixed compressed air foam extinguishing device of no reason to traditional are equipped as miniaturized movable's high efficiency fire extinguishing, and efficiency of putting out a fire is high, and mobility is strong, and is easy and simple to handle, can not reach the restricted space operation in at the fire engine, implements quick effectual putting out a fire to the conflagration of just starting.

In order to achieve linkage between the driving assembly 60 and the fire pump 31, the air compressor 43 and the foam pump 21, in conjunction with fig. 11-16, the linkage assembly includes: a first drive wheel 73, a second drive wheel 74, a third drive wheel 75, a fourth drive wheel 76, a first linkage assembly and a second linkage assembly. Wherein, the first transmission wheel 73 and the second transmission wheel 74 are rotatably connected with the driving component 60; a third transmission wheel 75 is rotatably connected to the air compressor 43, and the third transmission wheel 75 is linked with the first transmission wheel 73 through a first transmission belt 77 to drive the air compressor 43; the fourth driving wheel 76 is sleeved on and fixed on a first driving shaft of the gearbox 90, the fourth driving wheel 76 is rotationally connected to the gearbox 90, and the fourth driving wheel 76 is linked with the second driving wheel 74 through a second driving belt 78; the fire pump 31 is driven by the linkage action of the fourth transmission wheel 76 and the first linkage assembly; the foam pump 21 is driven by the linkage of the fourth drive wheel 76 and the second linkage assembly. The first driving wheel 73 is rotatably connected to the driving assembly 60 through a first rotating shaft, wherein the first rotating shaft is rotatably connected to the driving assembly 60, and the first driving wheel 73 is sleeved and fixed on the first rotating shaft; the second transmission wheel 74 is rotatably connected to the driving assembly 60 through a second rotating shaft, wherein the second rotating shaft is rotatably connected to the driving assembly 60, and the second transmission wheel 74 is sleeved and fixed on the second rotating shaft; the axis of the first rotating shaft is parallel to the axis of the second rotating shaft. In this embodiment, the gearbox 90 is provided with a first tensioning wheel 79, the first tensioning wheel 79 being used to control the degree of tensioning of the second drive belt 78. The driving assembly 60 is started, the first driving wheel 73 and the second driving wheel 74 rotate along with the first driving wheel, and partial power of the driving assembly 60 is transmitted to the air compressor 43 through linkage of the first driving wheel 73, the third driving wheel 75 and the first driving belt 77, so as to drive the air compressor 43 and enable the air compressor 43 to enter a working state; another part of the power of the driving assembly 60 is transmitted to the fourth driving wheel 76 of the gearbox 90 through the linkage of the second driving wheel 74, the second driving belt 78 and the fourth driving wheel 76, and the fire pump 31 is driven through the linkage of the fourth driving wheel 76 and the first linkage assembly and the fire pump 31 is enabled to enter the working state and/or the foam pump 21 is driven through the linkage of the fourth driving wheel 76 and the second linkage assembly and the foam pump 21 is enabled to enter the working state. The first, second, third and

fourth transmission wheels

73, 74, 75, 76 may be provided as pulleys, and the first and

second transmission belts

77, 78 may be provided as belts cooperating with the respective pulleys. In other exemplary embodiments, the first, second, third and

fourth transmission wheels

73, 74, 75 and 76 may be provided as sprockets, and the first and

second transmission belts

77 and 78 may be provided as chains engaged with the respective sprockets.

In order to effectively control the linkage between the driving assembly 60 and the fire pump 31, the first linkage assembly further comprises: a fifth driving wheel 711, a first clutch 712, a sixth driving wheel 713 and a control unit 80. The fifth transmission wheel 711 is rotatably connected to the gearbox 90, the first transmission shaft penetrates through the fifth transmission wheel 711, and a gap is formed between the outer peripheral surface of the first transmission shaft and the fifth transmission wheel 711; the first clutch 712 is sleeved on the first transmission shaft; the sixth driving wheel 713 is sleeved on and fixed to the main shaft of the fire pump 31, the sixth driving wheel 713 is rotatably connected to the fire pump 31, and the sixth driving wheel 713 is linked with the fifth driving wheel 711 through a third driving belt; the control component 80 pneumatically controls the first clutch 712 to control the contact and separation between the first clutch 712 and the fifth driving wheel 711; the fire pump 31 is driven by the linkage of the fourth driving wheel 76, the fifth driving wheel 711, the third driving belt and the sixth driving wheel 713 and the contact between the fifth driving wheel 711 and the first clutch 712. In this embodiment, a second tension pulley 714 is provided on the transmission 90, and the second tension pulley 714 is used for controlling the tension degree of the third transmission belt. The first clutch 712 is pneumatically controlled by the control assembly 80 to contact with the fifth driving wheel 711, so that when the fourth driving wheel 76 rotates, the fifth driving wheel 711 is driven to rotate, and the sixth driving wheel 713 is driven to rotate through the third driving belt, so as to drive the fire pump 31; the first clutch 712 is pneumatically controlled by the control assembly 80 to be disengaged from the fifth driving wheel 711, so that when the fourth driving wheel 76 rotates, neither the fifth driving wheel 711 nor the sixth driving wheel 713 rotate, and the fire pump 31 is not driven.

To effectively control the linkage between the drive assembly 60 and the foam pump 21, the second linkage assembly further comprises: a seventh transmission wheel 721, a second clutch 722, an eighth transmission wheel 723 and said control unit 80. Wherein, the seventh transmission wheel 721 is sleeved on and fixed to the first transmission shaft, and is rotatably connected to the transmission case 90; the second clutch 722 is sleeved on the main shaft of the foam pump 21; an eighth driving wheel 723 is sleeved and fixed on a second transmission shaft of the gearbox 90 and is rotatably connected to the gearbox 90, the axis of the second transmission shaft is collinear with the axis of the main shaft of the foam pump 21, and the eighth driving wheel 723 is linked with the seventh driving wheel 721 through a fourth driving belt 724; the control assembly 80 pneumatically controls the second clutch 722 to control contact and separation between the second clutch 722 and the eighth transmission wheel 723; the foam pump 21 is driven by the linkage action of the fourth transmission wheel 76, the seventh transmission wheel 721, the fourth transmission belt 724 and the eighth transmission wheel 723 and the contact between the eighth transmission wheel 723 and the second clutch 722. In this embodiment, a third tension pulley 725 is provided on the transmission case 90, and the third tension pulley 725 is used for controlling the tension degree of the fourth transmission belt 724. The second clutch 722 is pneumatically controlled to be in contact with the eighth transmission wheel 723 through the control component 80, when the fourth transmission wheel 76 rotates, the seventh transmission wheel 721 is driven to rotate, and under the linkage action of the seventh transmission wheel 721, the eighth transmission wheel 723 and a fourth transmission belt 724 wound between the seventh transmission wheel 721 and the eighth transmission wheel 723, the eighth transmission wheel 723 rotates along with the seventh transmission wheel 721 and the eighth transmission wheel 723, so that the foam pump 21 is started; the second clutch 722 is pneumatically controlled by the control unit 80 to be disengaged from the eighth transmission wheel 723, so that when the fourth transmission wheel 76 rotates, the main shaft of the foam pump 21 is disconnected from the second transmission shaft, the main shaft of the foam pump 21 does not rotate, and therefore, the foam pump 21 is not started.

In the embodiment of the present invention, the sizes of the fifth driving wheel 711, the sixth driving wheel 713, the seventh driving wheel 721 and the eighth driving wheel 723 on the gearbox 90 are set according to actual rotation speed requirements of the fire pump 31 and the foam pump 21, so as to achieve the effect of controlling the rotation speeds of the fire pump 31 and the foam pump 21.

In an exemplary embodiment, to increase the degree of automation of the apparatus, the water supply assembly 30 includes: a first water delivery pipe 32, a second water delivery pipe 33, a water flow meter 34 and a water flow control valve 35. One end of the first water pipe 32 is connected with the fire pump 31, and the other end of the first water pipe 32 is externally connected with a water storage tank or a municipal fire hydrant; one end of the second water pipe 33 is connected with the fire pump 31, and the other end of the second water pipe 33 is connected with the mixing assembly 50; the water flow meter 34 is arranged on the second water conveying pipe 33, and the water flow meter 34 is electrically connected with the control component 80; the water flow control valve 35 is disposed on the second water pipe 33, and the water flow control valve 35 is electrically connected to the control assembly 80. The water flow meter 34 measures the water flow delivered by the fire pump 31 to the mixing assembly 50, and the control assembly 80 controls the opening and closing of the water flow control valve 35 according to the real-time water flow data fed back by the flow meter, so as to control the water flow delivered by the fire pump 31 to the mixing assembly 50. When the control component 80 detects that the pressure of the second water pipe 33 is too high or receives that the real-time flow data of the water fed back by the flow meter is larger, the effect of limiting the flow and the pressure can be achieved by controlling the water flow control valve 35, and the situation that the air compressor 43 is damaged because the water flows back to the air compressor 43 after passing through the mixing component 50 is prevented; the device has high automation degree.

Optionally, the foam pump assembly 20 comprises: a foam liquid tank 23, a three-way valve 24, and a foam liquid delivery pipe 22. Wherein, the foam liquid box 23 is used for providing foam liquid; a first end 241 of the three-way valve 24 is connected with the foam liquid tank and used for conveying foam liquid in the foam liquid tank 23, a second end 242 of the three-way valve 24 is used for conveying foam liquid, and a third end 243 of the three-way valve 24 is used for connecting with an external foam liquid storage tank and used for conveying foam liquid in the external foam liquid storage tank; the foam concentrate delivery pipe 22 is communicated with the second end 242 and the second water delivery pipe 33, the foam concentrate delivery pipe 22 delivers foam concentrate to the second water delivery pipe 33, and the foam concentrate is mixed with water in the second water delivery pipe 33 to form mixed liquid. The foam concentrate delivery pipe 22 is provided with a foam concentrate regulating valve 25, and the foam concentrate regulating valve 25 is electrically connected to the control assembly 80. The device adjusts the flow of the delivered foam concentrate through the opening and closing of the foam concentrate adjusting valve 25 according to the actual requirement through the control component 80. Foam pump assembly 20 may be connected to different foam concentrate storage tanks by three-way valve 24, where different types of foam concentrate are stored, such as: a type A foam concentrate and a type B foam concentrate; the operator can conveniently select to connect different foam concentrate storage tanks according to different fires so as to form different types of compressed air foam extinguishing agents by means of the device, and the applicability is high. In this embodiment, finer mix ratios and foam concentrate flow variations can be achieved by the foam pump assembly 20.

In order to improve the foaming effect of the mixed liquid and improve the fire extinguishing effect, the device further comprises a heat exchanger 41, wherein the heat exchanger 41 is used for cooling the compressed air conveyed by the air compressor 43; the gas supply assembly 40 further includes: a first compressed air delivery pipe 45, wherein one end of the first compressed air delivery pipe 45 is connected with the air compressor 43, and the other end of the first compressed air delivery pipe 45 is connected with an air inlet of the heat exchanger 41; and at least one second compressed air duct 42, said at least one second compressed air duct 42 connecting the air outlet of said heat exchanger 41 and said mixing assembly 50; the heat exchanger 41 is further configured to cool the engine oil in the air compressor 43, and an oil inlet and an oil outlet of the heat exchanger 41 are respectively connected to the air compressor 43. When the air compressor 43 delivers compressed air to the compressed air foam fire extinguishing device, the compressed air enters the heat exchanger 41 through the first compressed air delivery pipe 45, and the temperature of the compressed air is adjusted through the heat exchanger 41; the conditioned compressed air passes through the second compressed air duct 42 and enters the mixing assembly 50 from the heat exchanger 41. In this embodiment, in order to prolong the service life of air compressor 43, the machine oil for air compressor 43 is cooled through heat exchanger 41 for air compressor 43 can put into the fire control work high-efficiently and continuously, helps prolonging the service life of air compressor 43. In this embodiment, the device further includes an oil tank 47, the oil tank 47 stores oil, and the oil tank 47 is connected to the air compressor 43 to provide the oil to the air compressor 43.

In order to improve the reliability of the device, a compressed air regulating valve 44 is disposed on the second compressed air delivery pipe 42, and the compressed air regulating valve 44 is electrically connected to the control assembly 80. The control assembly 80 controls the open state of the compressed air regulating valve 44 to control the flow of compressed air delivered to the mixing assembly 50; the device has high automation degree and good fire extinguishing effect.

To meet the different demands of different fires on the fire suppressant, in an exemplary embodiment, the mixing assembly 50 includes: a mixer 51 connecting the at least one second compressed air delivery pipe 42 and the second water delivery pipe 33; and a fire extinguishing agent delivery pipe 53, wherein one end of the fire extinguishing agent delivery pipe 53 is connected with the mixer 51, one end of the fire extinguishing agent delivery pipe 53 is provided with an outlet 52, and the outlet 52 is used for delivering water or compressed air foam extinguishing agent. In the exemplary embodiment, the mass of compressed air fire suppressant foam produced by the apparatus is related to the diameter of the tube of the fire suppressant delivery tube 53 of the apparatus.

In order to improve the convenience of the operation of the device, the frame 10, the foam pump assembly 20, the water supply assembly 30, the air supply assembly 40, the mixing assembly 50 and the driving assembly 60 are all integrated in a box body, and universal wheels are arranged at the bottom of the box body, so that the compressed air foam fire extinguishing device is convenient to move and is suitable for malls, tunnels, airport parking aprons, freight transfer warehouses, oil depot moving areas and the like. A foam liquid level observation window is also arranged on the box body; for observing the liquid level of the foam liquid tank 23. The device is externally connected with a fire fighting lance assembly, the fire fighting lance assembly is connected with the outlet 52, wherein the fire fighting lance can include but is not limited to a straight pipe lance and a water lance. The spraying working pressure of the device is 0.8MPa, the flow rate of the mixed liquid is 150-1200L/min, and the flow rate of the fire extinguishing agent output by the outlet 52 is 850-1200L/min; the horizontal transport distance is not less than 150 meters and the exit 52 throw distance is not less than 20 meters. Various pipelines are made of stainless steel. The control assembly 80 may also include a controller, a display control panel, a battery 81 and an electrical box 82, wherein both the battery 81 and the electrical box 82 are used to power the device. Wherein the controller is a programmable controller; the display control panel comprises a plurality of buttons, and the plurality of buttons can control the compressed air foam fire extinguishing device. The controller is electrically connected to the air compressor 43, the fire pump 31, the fire monitor assembly, the foam pump 21, the display control panel, the water flow meter 34, the three-way valve 24, the foam liquid regulating valve 25, the compressed air regulating valve 44, and the like. The controller is used for controlling the opening, closing and adjustment of the air compressor 43, the fire pump 31, the fire monitor assembly, the foam pump 21, the three-way valve 24, the foam liquid regulating valve 25, the compressed air regulating valve 44 and the like; the display control panel is used for displaying the opening and closing states of various valves in the device, the flow and pressure of water in the second water conveying pipe 33, the flow of foam concentrate in the foam concentrate conveying pipe 22 and other information and operation states.

In order to make the understanding of the compressed air foam fire extinguishing apparatus of the present invention easier, the following description will be made for the specific operation of three operating conditions of the compressed air foam fire extinguishing apparatus:

the working condition I is as follows: outputting compressed air foam extinguishing agent; an operator operates the display control panel to control the first clutch 712 to contact with the fifth transmission wheel 711, the second clutch 722 to contact with the eighth transmission wheel 723, the driving assembly 60 is started, partial power of the driving assembly 60 is transmitted to the air compressor 43 through the linkage effect of the first transmission wheel 73, the third transmission wheel 75 and the first transmission belt 77, and the air compressor 43 rotates and transmits compressed air; and transmits another part of the power of the driving assembly 60 to the fire pump 31 and the foam pump 21 by the linkage action of the first linkage assembly and the second linkage assembly, the foam pump 21 delivers foam liquid, the fire pump 31 delivers water, the foam liquid and the water form mixed liquid in the second water delivery pipe 33, the mixed liquid and the compressed air are mixed in the mixing assembly 50, and the compressed air foam extinguishing agent is output from the outlet 52.

Working conditions are as follows: outputting water; an operator operates the display control panel to control the first clutch 712 to contact with the fifth driving wheel 711, control the second clutch 722 to separate from the eighth driving wheel 723, start the driving assembly 60, transmit part of the power of the driving assembly 60 to the fire pump 31 through the linkage action of the first linkage assembly, the fire pump 31 delivers water, the foam pump 21 is not started, and the water is output from the outlet 52 through the mixing assembly 50.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressed air foam fire suppression apparatus, comprising:

2. The compressed air foam fire suppression apparatus of claim 1, wherein said linkage assembly comprises:

3. The compressed air foam fire suppression apparatus of claim 2, wherein said first linkage assembly further comprises:

the first clutch is sleeved on the first transmission shaft;

4. The compressed air foam fire suppression apparatus of claim 3, wherein said second linkage assembly further comprises:

the second clutch is sleeved on the main shaft of the foam pump;

5. A compressed air foam fire extinguishing apparatus according to claim 4, wherein the water supply assembly comprises:

6. The compressed air foam fire suppression apparatus of claim 5, wherein said foam pump assembly comprises:

the foam liquid box is used for providing foam liquid;

7. A compressed air foam fire extinguishing unit according to claim 6, wherein the foam concentrate feed pipe is provided with a foam concentrate regulating valve, which is electrically connected to the control assembly.

8. The compressed air foam fire extinguishing apparatus according to claim 5, further comprising a heat exchanger for cooling the compressed air delivered by the air compressor;

the gas supply assembly further includes:

9. Compressed air foam fire extinguishing apparatus according to claim 8, wherein the second compressed air delivery pipe is provided with a compressed air regulating valve, which is electrically connected to the control assembly.

10. The compressed air foam fire suppression apparatus of claim 8, wherein said mixing assembly comprises: