Perfluorohexanone foam fire extinguishing system

Abstract

The utility model discloses a perfluorohexanone foam fire extinguishing system, which relates to the technical field of fire fighting equipment, and comprises a foam stock solution storage tank, a fire fighting water storage tank, a mixing device, a stirring device, a perfluorohexanone storage tank and a spraying device, a third liquid inlet pipe, a fourth liquid inlet pipe and a second liquid outlet pipe are arranged on the stirring device, the foam stock solution storage tank is connected with the first liquid inlet pipe through a first conveying pipeline, the fire fighting water storage tank is connected with the second liquid inlet pipe through a second conveying pipeline, and the first liquid outlet pipe is connected with the third liquid inlet pipe through a third conveying pipeline; the perfluorohexanone storage tank is connected with the fourth liquid inlet pipe through a fourth conveying pipeline, the second liquid outlet pipe is connected with the spraying device through a fifth conveying pipeline, and the problems that when an existing foam fire extinguishing system is used, the temperature of a fire scene cannot be effectively reduced, and secondary damage is likely to be caused to personnel and objects are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a perfluorohexanone foam fire extinguishing system. Background Art

[0002] The foam fire extinguishing system is a common fire extinguishing equipment used to extinguish liquid fires. It releases foam at the fire scene to form a foam film covering the surface of the flame, effectively isolating the fire source from oxygen and achieving the purpose of extinguishing the fire. The foam fire extinguishing system usually includes components such as a foam generator, a foam liquid storage tank, a pipeline system and a control device.

[0003] The foam fire extinguishing system in the prior art is generally used in conjunction with a compressed air machine, which can achieve the purpose of extinguishing fires. However, since it cannot isolate heat energy, it cannot effectively reduce the temperature at the fire scene during actual fire extinguishing, which can easily cause secondary damage to personnel and objects.

[0004] In the invention with application number: CN202010906185.8 and publication number: CN114100043A, a foam fire extinguishing system and a foam fire extinguishing method are disclosed. The foam fire extinguishing system includes an injection mechanism and a foam supply mechanism; the injection mechanism includes an injection pipeline and a lifting unit. Although it can achieve the purpose of fire extinguishing, when used, it still cannot effectively reduce the temperature at the fire scene, which is easy to cause secondary damage to personnel and objects. Utility Model Content

[0005] Based on this, in order to solve the above problems, the utility model proposes a perfluorohexanone foam fire extinguishing system, which reduces the temperature of the fire scene through perfluorohexanone, thereby solving the problem that the current foam fire extinguishing system cannot effectively reduce the temperature of the fire scene when in use, and is likely to cause secondary damage to people and objects.

[0006] The technical solution of the utility model is:

[0007] A perfluorohexanone foam fire extinguishing system, comprising a foam stock liquid storage tank, a fire water storage tank, a mixing device, a stirring device, a perfluorohexanone storage tank and a spraying device, wherein the mixing device is provided with a first liquid inlet pipe, a second liquid inlet pipe and a first liquid outlet pipe, and the stirring device is provided with a third liquid inlet pipe, a fourth liquid inlet pipe and a second liquid outlet pipe;

[0008] The foam stock liquid storage tank is connected to the first liquid inlet pipe through a first delivery pipeline, and the first delivery pipeline is provided with a first solenoid valve, a first metering pump and a first check valve in sequence; the fire water storage tank is connected to the second liquid inlet pipe through a second delivery pipeline, and the second delivery pipeline is provided with a second solenoid valve, a second metering pump and a second check valve in sequence;

[0009] The first liquid outlet pipe is connected to the third liquid inlet pipe through the third delivery pipe, and the third delivery pipe is provided with a third solenoid valve, a third metering pump and a third one-way valve in sequence, the perfluorohexanone storage tank is connected to the fourth liquid inlet pipe through the fourth delivery pipe, and the fourth delivery pipe is provided with a pressure reducing valve, a fourth solenoid valve, a fourth metering pump and a fourth one-way valve in sequence, the second liquid outlet pipe is connected to the spraying device through the fifth delivery pipe, and the fifth delivery pipe is provided with an output solenoid valve and an output pump.

[0010] Preferably, the mixing device includes a mixing tank body, a mixing tank cover and a mixing assembly, the mixing tank body is provided with a accommodating cavity, the accommodating cavity passes through the top of the mixing tank body, the mixing tank cover is arranged on the top of the mixing tank body and is threadedly connected to the mixing tank body for closing the accommodating cavity, the first liquid inlet pipe and the second liquid inlet pipe are arranged on the top of the mixing tank cover and are connected to the accommodating cavity, the first liquid outlet pipe is arranged on one side of the mixing tank body and is connected to the accommodating cavity, the mixing assembly is arranged in the accommodating cavity and is arranged in cooperation with the mixing tank cover for mixing foam concentrate and fire water.

[0011] Preferably, the mixing assembly includes a first plug-in portion, a second plug-in portion, a mixing body and a driving motor, the driving motor is fixedly arranged on the top of the mixing tank cover, the first plug-in portion is arranged in the accommodating cavity, and one end passes through the mixing tank cover and is fixedly connected to the output shaft of the driving motor, the first plug-in portion is rotatably connected to the mixing tank cover, the second plug-in portion is arranged at the bottom of the accommodating cavity, and is rotatably connected to the bottom of the mixing tank body through a rotating mounting seat, the mixing body is arranged in the accommodating cavity, and both ends are respectively plugged into the first plug-in portion and the second plug-in portion.

[0012] Preferably, a plurality of mounting grooves are provided on the mixing body, and a mixing plate is installed in each of the plurality of mounting grooves. The mixing plate and the mounting grooves are detachably connected by bolts, and a plurality of liquid flow ports are provided on the mixing plate.

[0013] Preferably, at least one pair of limiting blocks are provided on the first plug-in portion and the second plug-in portion, and limiting slots cooperating with the limiting blocks are respectively provided at both ends of the mixing body, and the limiting blocks can be inserted into the limiting slots.

[0014] Preferably, the rotatable mounting seat includes a mounting ring and a rotatable bearing arranged in the mounting ring, the mounting ring is arranged at the bottom of the accommodating cavity and is fixedly connected to the mixing tank body, and the second plug-in portion is rotatably connected to the mounting ring through the rotatable bearing.

[0015] Preferably, the stirring device includes a stirring tank body, an upper cover body, a lower cover body, a mounting bracket and a stirring assembly. The stirring tank body is provided with a mounting cavity which penetrates the stirring tank body from top to bottom. The upper cover body is arranged on the top of the stirring tank body and is threadedly connected to the stirring tank body. The lower cover body is arranged on the bottom of the stirring tank body and is fixedly connected to the stirring tank body. The mounting bracket is arranged on the bottom of the lower cover body and is fixedly connected to the lower cover body. The third liquid inlet pipe and the fourth liquid inlet pipe are arranged on the top of the upper cover body and are connected to the mounting cavity. The second liquid outlet pipe is arranged on the bottom of the lower cover body and is connected to the mounting cavity. The stirring assembly is arranged in the mounting cavity and is arranged in coordination with the upper cover body.

[0016] Preferably, the stirring assembly includes a stirring shaft, a pair of stirring plates arranged on the stirring shaft and a rotating motor, the rotating motor is arranged on the upper cover body, and the output shaft of the rotating motor passes through the upper cover body and extends into the installation cavity, the output shaft of the rotating motor is rotatably connected to the upper cover body, the stirring shaft is arranged in the installation cavity, and one end is fixedly connected to the output shaft of the rotating motor, and a pair of stirring plates are fixedly arranged on the stirring shaft.

[0017] Preferably, a pair of stirring plates are each provided with a plurality of liquid passage openings.

[0018] Preferably, the lower cover body is provided with a plug-in groove which cooperates with one end of the stirring shaft, and one end of the stirring shaft can be inserted into the plug-in groove to be rotatably connected with the lower cover body.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] When in use, the foam stock liquid stored in the foam stock liquid storage tank enters the mixing device through the first delivery pipeline and the first liquid inlet pipe, the fire water stored in the fire water storage tank enters the mixing device through the second delivery pipeline and the second liquid inlet pipe, and then the first metering pump and the second metering pump are used to control the ratio of the foam stock liquid and the fire water entering the mixing device, and then the foam stock liquid and the fire water are mixed by the mixing device to obtain a mixed foam liquid; the mixed foam liquid enters the stirring device through the first liquid outlet pipe and the third liquid inlet pipe, and the perfluorohexanone stored in the perfluorohexanone storage tank is stirred. Perfluorohexanone is injected into the stirring device through the fourth delivery pipeline and the fourth liquid inlet pipe, and then the ratio of the foam liquid and perfluorohexanone entering the stirring device is controlled through the third metering pump and the fourth metering pump, and then the foam liquid and perfluorohexanone are stirred and mixed by the stirring device to obtain a mixed perfluorohexanone foam liquid; the mixed perfluorohexanone foam liquid enters the spray device through the second liquid outlet pipe and the fifth delivery pipeline, and then is sprayed to the fire scene through the spray device to form a foam film covering the fire source, and at the same time, heat is absorbed by perfluorohexanone, thereby achieving the effect of extinguishing the fire and cooling the temperature. The problem that the current foam fire extinguishing system cannot effectively reduce the temperature of the fire scene when in use, and is prone to causing secondary damage to personnel and objects is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a perfluorohexanone foam fire extinguishing system described in an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the mixing device described in the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the local structure of the mixing device described in the embodiment of the utility model Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the local structure of the mixing device described in the embodiment of the utility model Figure 2 ;

[0025] Figure 5 It is described in the embodiment of the utility model Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 6 It is a structural schematic diagram of the stirring device described in the embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the local structure of the stirring device described in the embodiment of the utility model Figure 1 ;

[0028] Figure 8 This is a schematic diagram of the local structure of the stirring device described in the embodiment of the utility model Figure 2 ;

[0029] Description of reference numerals:

[0030] 10-foam stock solution storage tank, 100-first liquid inlet pipe, 101-second liquid inlet pipe, 102-first liquid outlet pipe, 103-third liquid inlet pipe, 104-fourth liquid inlet pipe, 105-second liquid outlet pipe, 106-first delivery pipeline, 107-first solenoid valve, 108-first metering pump, 109-first one-way valve, 110-second delivery pipeline, 111-second solenoid valve, 112-second metering pump, 113-second one-way valve, 114-third delivery pipeline, 115-third solenoid valve, 116-third metering pump, 117-third one-way valve, 118-fourth delivery pipeline, 119-fourth solenoid valve, 120-fourth metering pump, 121-fourth one-way valve, 122-fifth delivery pipeline, 123-output solenoid valve, 124-output pump, 125-pressure reducing valve, 20-fire water storage tank, 30-mixing device , 300-mixing tank body, 301-mixing tank cover, 302-mixing assembly, 303-accommodating cavity, 304-first plug-in portion, 305-second plug-in portion, 306-mixing body, 307-driving motor, 308-rotating mounting seat, 309-mounting groove, 310-mixing plate, 311-liquid flow port, 312-limiting plug block, 313-limiting slot, 314-mounting ring, 315-rotating shaft Bearing, 40-stirring device, 400-stirring tank body, 401-upper cover, 402-lower cover, 403-mounting bracket, 404-stirring component, 405-mounting cavity, 406-stirring shaft, 407-stirring plate, 408-rotating motor, 409-liquid through port, 410-plug slot, 50-perfluorohexanone storage tank, 60-spraying device, 600-foam generator, 601-foam spray gun. DETAILED DESCRIPTION

[0031] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0032] Example:

[0033] like Figure 1 As shown, in order to solve the above problems, the present embodiment discloses a perfluorohexanone foam fire extinguishing system, comprising a foam stock solution storage tank 10, a fire water storage tank 20, a mixing device 30, a stirring device 40, a perfluorohexanone storage tank 50 and a spraying device 60, wherein the mixing device 30 is provided with a first liquid inlet pipe 100, a second liquid inlet pipe 101 and a first liquid outlet pipe 102, and the stirring device 40 is provided with a third liquid inlet pipe 103, a fourth liquid inlet pipe 104 and a second liquid outlet pipe 105;

[0034] The foam stock liquid storage tank 10 is connected to the first liquid inlet pipe 100 through a first delivery pipe 106, and the first delivery pipe 106 is provided with a first solenoid valve 107, a first metering pump 108 and a first check valve 109 in sequence. The fire water storage tank 20 is connected to the second liquid inlet pipe 101 through a second delivery pipe 110, and the second delivery pipe 110 is provided with a second solenoid valve 111, a second metering pump 112 and a second check valve 113 in sequence.

[0035] The first liquid outlet pipe 102 is connected to the third liquid inlet pipe 103 through the third delivery pipe 114, and the third delivery pipe 114 is provided with a third solenoid valve 115, a third metering pump 116 and a third non-return valve 117 in sequence, the perfluorohexanone storage tank 50 is connected to the fourth liquid inlet pipe 104 through the fourth delivery pipe 118, and the fourth delivery pipe 118 is provided with a pressure reducing valve 125, a fourth solenoid valve 119, a fourth metering pump 120 and a fourth non-return valve 121 in sequence, the second liquid outlet pipe 105 is connected to the spray device 60 through the fifth delivery pipe 122, and the fifth delivery pipe 122 is provided with an output solenoid valve 123 and an output pump 124.

[0036] When in use, the foam stock solution stored in the foam stock solution storage tank 10 enters the mixing device 30 through the first delivery pipeline 106 and the first liquid inlet pipe 100, and the fire water stored in the fire water storage tank 20 enters the mixing device 30 through the second delivery pipeline 110 and the second liquid inlet pipe 101, and then the first metering pump 108 and the second metering pump 112 are used to control the ratio of the foam stock solution and the fire water entering the mixing device 30, and then the foam stock solution and the fire water are mixed by the mixing device 30 to obtain a mixed foam liquid; the mixed foam liquid enters the stirring device 40 through the first liquid outlet pipe 102 and the third liquid inlet pipe 103, and the perfluorohexanone storage tank 50 is filled with water. The stored perfluorohexanone is injected into the stirring device 40 through the fourth delivery pipe 118 and the fourth liquid inlet pipe 104, and then the ratio of the foam liquid and the perfluorohexanone entering the stirring device 40 is controlled by the third metering pump 116 and the fourth metering pump 120, and then the foam liquid and the perfluorohexanone are stirred and mixed by the stirring device 40 to obtain the mixed perfluorohexanone foam liquid; the mixed perfluorohexanone foam liquid enters the spray device 60 through the second liquid outlet pipe 105 and the fifth delivery pipe 122, and then sprayed to the fire scene through the spray device 60 to form a foam film covering the fire source, and at the same time, heat is absorbed by the perfluorohexanone, so as to achieve the effect of extinguishing and cooling. The problem that the current foam fire extinguishing system cannot effectively reduce the temperature of the fire scene when in use, and is easy to cause secondary damage to personnel and objects is solved.

[0037] like Figures 2 to 5As shown, in order to facilitate mixing the foam concentrate and the fire water to obtain the mixed foam liquid, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the mixing device 30 includes a mixing tank body 300, a mixing tank cover 301 and a mixing assembly 302. The mixing tank body 300 is provided with a accommodating cavity 303, and the accommodating cavity 303 passes through the top of the mixing tank body 300. The mixing tank cover 301 is arranged on the top of the mixing tank body 300 and is threadedly connected to the mixing tank body 300 for closing the accommodating cavity 303. The first liquid inlet pipe 100 and the second liquid inlet pipe 101 are arranged on the top of the mixing tank cover 301 and are connected to the accommodating cavity 303. The first liquid outlet pipe 102 is arranged on one side of the mixing tank body 300 and is connected to the accommodating cavity 303. The mixing assembly 302 is arranged in the accommodating cavity 303 and is arranged in cooperation with the mixing tank cover 301 for mixing the foam concentrate and the fire water.

[0038] It is further preferred that the mixing assembly 302 includes a first plug-in portion 304, a second plug-in portion 305, a mixing body 306 and a driving motor 307, the driving motor 307 is fixedly arranged on the top of the mixing tank cover 301, the first plug-in portion 304 is arranged in the accommodating cavity 303, and one end passes through the mixing tank cover 301 and is fixedly connected to the output shaft of the driving motor 307, the first plug-in portion 304 is rotatably connected to the mixing tank cover 301, the second plug-in portion 305 is arranged at the bottom of the accommodating cavity 303, and is rotatably connected to the bottom of the mixing tank body 300 through a rotating mounting seat 308, the mixing body 306 is arranged in the accommodating cavity 303, and its two ends are respectively plugged into the first plug-in portion 304 and the second plug-in portion 305.

[0039] The first plug-in portion 304, the second plug-in portion 305 and both ends of the mixing body 306 are plugged in, so that the installation and removal of the mixing body 306 can be completed quickly.

[0040] Further preferably, the mixing body 306 is provided with a plurality of mounting grooves 309 , each of which is provided with a mixing plate 310 , the mixing plate 310 is detachably connected to the mounting grooves 309 by bolts, and the mixing plate 310 is provided with a plurality of liquid flow ports 311 .

[0041] The liquid flow port 311 is provided so that when the mixing plate 310 rotates, the liquid can flow from the liquid flow port 311 , thereby making it easier for the foam stock solution and the fire water to mix.

[0042] It is further preferred that at least one pair of limiting blocks 312 are provided on the first plug-in portion 304 and the second plug-in portion 305 , and limiting slots 313 cooperating with the limiting blocks 312 are respectively provided at both ends of the mixing body 306 , and the limiting blocks 312 can be inserted into the limiting slots 313 .

[0043] The first plug-in portion 304, the second plug-in portion 305 and the mixing body 306 are connected by the matching of the limiting plug block 312 and the limiting slot 313, so that the mixing component 302 can be quickly installed and disassembled.

[0044] It is further preferred that the rotating mounting seat 308 includes a mounting ring 314 and a rotating bearing 315 arranged in the mounting ring 314, the mounting ring 314 is arranged at the bottom of the accommodating cavity 303, and is fixedly connected to the mixing tank body 300, and the second plug-in portion 305 is rotatably connected to the mounting ring 314 through the rotating bearing 315.

[0045] The provision of the rotating mounting seat 308 can make the mixing body 306 more stable when rotating.

[0046] When in use, the first plug-in part 304 is driven by the driving motor 307 to drive the mixing body 306 and the second plug-in part 305 to rotate, so that the mixing plate 310 on the mixing body 306 rotates, thereby mixing the foam concentrate and the fire water.

[0047] like Figures 6 to 8 As shown, in order to facilitate the mixing of the mixed foam liquid and perfluorohexanone, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the stirring device 40 includes a stirring tank body 400, an upper cover body 401, a lower cover body 402, a mounting bracket 403 and a stirring assembly 404. The stirring tank body 400 is provided with a mounting cavity 405 that penetrates the stirring tank body 400 from top to bottom. The upper cover body 401 is arranged on the top of the stirring tank body 400 and is threadedly connected to the stirring tank body 400. The lower cover body 402 is arranged at the bottom of the stirring tank body 400 and is fixedly connected to the stirring tank body 400, the mounting bracket 403 is arranged at the bottom of the lower cover body 402 and is fixedly connected to the lower cover body 402, the third liquid inlet pipe 103 and the fourth liquid inlet pipe 104 are arranged at the top of the upper cover body 401 and are connected to the mounting cavity 405, the second liquid outlet pipe 105 is arranged at the bottom of the lower cover body 402 and is connected to the mounting cavity 405, and the stirring assembly 404 is arranged in the mounting cavity 405 and is arranged in coordination with the upper cover body 401.

[0048] The upper cover 401 is disposed on the top of the stirring tank body 400 and is threadedly connected to the stirring tank body 400, so that the upper cover 401 and the stirring assembly 404 can be easily installed and disassembled.

[0049] It is further preferred that the stirring assembly 404 includes a stirring shaft 406, a pair of stirring plates 407 arranged on the stirring shaft 406, and a rotating motor 408, the rotating motor 408 is arranged on the upper cover body 401, and the output shaft of the rotating motor 408 passes through the upper cover body 401 and extends into the installation cavity 405, the output shaft of the rotating motor 408 is rotatably connected to the upper cover body 401, the stirring shaft 406 is arranged in the installation cavity 405, and one end is fixedly connected to the output shaft of the rotating motor 408, and a pair of stirring plates 407 are fixedly arranged on the stirring shaft 406.

[0050] More preferably, a pair of stirring plates 407 are each provided with a plurality of liquid passage openings 409 .

[0051] The provision of the liquid through port 409 allows the liquid to flow through the liquid through port 409 when the stirring plate 407 rotates, thereby making it easier for the mixed foam liquid and perfluorohexanone to mix.

[0052] Further preferably, a plug-in groove 410 is provided on the lower cover 402 to cooperate with one end of the stirring shaft 406 , and one end of the stirring shaft 406 can be inserted into the plug-in groove 410 to be rotatably connected with the lower cover 402 .

[0053] One end of the stirring shaft 406 is plugged into the plug-in groove 410 and a rotation connection is adopted at the same time, which can not only improve the stability of the stirring shaft 406 during rotation, but also facilitate the installation and removal of the stirring shaft 406.

[0054] When in use, the stirring shaft 406 is driven to rotate by rotating the motor 408, thereby driving the stirring plate 407 to rotate, thereby achieving mixing of the mixed foam liquid and perfluorohexanone.

[0055] Preferably, the spray device 60 is a foam spray gun.

[0056] like Figure 1 As shown, in another embodiment, in order to further make the sprayed foam denser, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the spraying device 60 includes a foam generator 600 and a foam spray gun 601, the foam generator 600 is connected to the fifth delivery pipeline 122, and the foam spray gun 601 is connected to the foam generator 600.

[0057] The foam generator 600 can be a foam generator in the prior art that can realize the function of the utility model. By adding the foam generator 600 to cooperate with the stirring device 40 and the mixing device 30, the mixed perfluorohexanone foam liquid can produce denser foam.

[0058] Working principle of this utility model:

[0059] When in use, the foam stock solution stored in the foam stock solution storage tank 10 enters the mixing device 30 through the first delivery pipeline 106 and the first liquid inlet pipe 100, and the fire water stored in the fire water storage tank 20 enters the mixing device 30 through the second delivery pipeline 110 and the second liquid inlet pipe 101, and then the first metering pump 108 and the second metering pump 112 are used to control the ratio of the foam stock solution and the fire water entering the mixing device 30, and then the foam stock solution and the fire water are mixed by the mixing device 30 to obtain a mixed foam liquid; the mixed foam liquid enters the stirring device 40 through the first liquid outlet pipe 102 and the third liquid inlet pipe 103, and the perfluorohexanone storage tank 50 is filled with water. The stored perfluorohexanone is injected into the stirring device 40 through the fourth delivery pipe 118 and the fourth liquid inlet pipe 104, and then the ratio of the foam liquid and the perfluorohexanone entering the stirring device 40 is controlled by the third metering pump 116 and the fourth metering pump 120, and then the foam liquid and the perfluorohexanone are stirred and mixed by the stirring device 40 to obtain the mixed perfluorohexanone foam liquid; the mixed perfluorohexanone foam liquid enters the spray device 60 through the second liquid outlet pipe 105 and the fifth delivery pipe 122, and then is sprayed to the fire scene through the spray device 60 to form a foam film covering the fire source, and at the same time, the heat is absorbed by the perfluorohexanone, so as to achieve the effect of extinguishing the fire and cooling the temperature.

[0060] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A perfluorohexanone foam fire extinguishing system, characterized in that: The invention comprises a foam stock liquid storage tank (10), a fire water storage tank (20), a mixing device (30), a stirring device (40), a perfluorohexanone storage tank (50) and a spraying device (60); the mixing device (30) is provided with a first liquid inlet pipe (100), a second liquid inlet pipe (101) and a first liquid outlet pipe (102); the stirring device (40) is provided with a third liquid inlet pipe (103), a fourth liquid inlet pipe (104) and a second liquid outlet pipe (105); The foam stock liquid storage tank (10) is connected to the first liquid inlet pipe (100) via a first delivery pipeline (106), and the first delivery pipeline (106) is provided with a first electromagnetic valve (107), a first metering pump (108) and a first non-return valve (109) in sequence; the fire water storage tank (20) is connected to the second liquid inlet pipe (101) via a second delivery pipeline (110), and the second delivery pipeline (110) is provided with a second electromagnetic valve (111), a second metering pump (112) and a second non-return valve (113) in sequence; The first liquid outlet pipe (102) is connected to the third liquid inlet pipe (103) via a third delivery pipe (114), and the third delivery pipe (114) is provided with a third solenoid valve (115), a third metering pump (116) and a third check valve (117) in sequence; the perfluorohexanone storage tank (50) is connected to the fourth liquid inlet pipe (104) via a fourth delivery pipe (118), and the fourth delivery pipe (118) is provided with a pressure reducing valve (125), a fourth solenoid valve (119), a fourth metering pump (120) and a fourth check valve (121) in sequence; the second liquid outlet pipe (105) is connected to the spray device (60) via a fifth delivery pipe (122), and the fifth delivery pipe (122) is provided with an output solenoid valve (123) and an output pump (124).

2. A perfluorohexanone foam fire extinguishing system according to claim 1, characterized in that: The mixing device (30) comprises a mixing tank body (300), a mixing tank cover (301) and a mixing assembly (302). A containing cavity (303) is provided in the mixing tank body (300), and the containing cavity (303) passes through the top of the mixing tank body (300). The mixing tank cover (301) is arranged on the top of the mixing tank body (300) and is threadedly connected to the mixing tank body (300) for sealing the containing cavity (303). A first liquid inlet pipe (100) and a second liquid inlet pipe (101) are arranged on the top of the mixing tank cover (301) and are in communication with the containing cavity (303). A first liquid outlet pipe (102) is arranged on one side of the mixing tank body (300) and is in communication with the containing cavity (303). The mixing assembly (302) is arranged in the containing cavity (303) and is arranged in cooperation with the mixing tank cover (301) for mixing foam concentrate and fire water.

3. A perfluorohexanone foam fire extinguishing system according to claim 2, characterized in that: The mixing assembly (302) comprises a first plug-in portion (304), a second plug-in portion (305), a mixing body (306) and a driving motor (307). The driving motor (307) is fixedly arranged on the top of the mixing tank cover (301). The first plug-in portion (304) is arranged in the accommodating cavity (303), and one end thereof passes through the mixing tank cover (301) and is fixedly connected to the output shaft of the driving motor (307). The first plug-in portion (304) is rotatably connected to the mixing tank cover (301). The second plug-in portion (305) is arranged at the bottom of the accommodating cavity (303), and is rotatably connected to the bottom of the mixing tank body (300) via a rotating mounting seat (308). The mixing body (306) is arranged in the accommodating cavity (303), and two ends thereof are respectively plugged into the first plug-in portion (304) and the second plug-in portion (305).

4. A perfluorohexanone foam fire extinguishing system according to claim 3, characterized in that: The mixing body (306) is provided with a plurality of mounting grooves (309), and a mixing plate (310) is installed in each of the plurality of mounting grooves (309). The mixing plate (310) and the mounting grooves (309) are detachably connected by bolts, and the mixing plate (310) is provided with a plurality of liquid flow ports (311).

5. A perfluorohexanone foam fire extinguishing system according to claim 4, characterized in that: At least one pair of limiting plug blocks (312) are provided on the first plug-in portion (304) and the second plug-in portion (305), and limiting slots (313) matched with the limiting plug blocks (312) are respectively provided at both ends of the mixing body (306), and the limiting plug blocks (312) can be inserted into the limiting slots (313).

6. A perfluorohexanone foam fire extinguishing system according to claim 5, characterized in that: The rotatable mounting seat (308) comprises a mounting ring (314) and a rotatable bearing (315) disposed in the mounting ring (314); the mounting ring (314) is disposed at the bottom of the accommodating cavity (303) and is fixedly connected to the mixing tank body (300); and the second plug-in portion (305) is rotatably connected to the mounting ring (314) via the rotatable bearing (315).

7. A perfluorohexanone foam fire extinguishing system according to claim 1 or 6, characterized in that: The stirring device (40) comprises a stirring tank body (400), an upper cover (401), a lower cover (402), a mounting bracket (403) and a stirring assembly (404); a mounting cavity (405) is provided in the stirring tank body (400) and penetrates the stirring tank body (400) from top to bottom; the upper cover (401) is arranged on the top of the stirring tank body (400) and is threadedly connected to the stirring tank body (400); the lower cover (402) is arranged on the bottom of the stirring tank body (400) and is threadedly connected to the stirring tank body (400); 400), the mounting bracket (403) is arranged at the bottom of the lower cover body (402) and is fixedly connected to the lower cover body (402), the third liquid inlet pipe (103) and the fourth liquid inlet pipe (104) are arranged at the top of the upper cover body (401) and are connected to the mounting cavity (405), the second liquid outlet pipe (105) is arranged at the bottom of the lower cover body (402) and is connected to the mounting cavity (405), and the stirring assembly (404) is arranged in the mounting cavity (405) and is arranged in coordination with the upper cover body (401).

8. A perfluorohexanone foam fire extinguishing system according to claim 7, characterized in that: The stirring assembly (404) comprises a stirring shaft (406), a pair of stirring plates (407) arranged on the stirring shaft (406) and a rotating motor (408); the rotating motor (408) is arranged on the upper cover (401), and the output shaft of the rotating motor (408) passes through the upper cover (401) and extends into the installation cavity (405); the output shaft of the rotating motor (408) is rotatably connected to the upper cover (401); the stirring shaft (406) is arranged in the installation cavity (405), and one end is fixedly connected to the output shaft of the rotating motor (408); and the pair of stirring plates (407) are fixedly arranged on the stirring shaft (406).

9. A perfluorohexanone foam fire extinguishing system according to claim 8, characterized in that: A pair of stirring plates (407) are each provided with a plurality of liquid passage openings (409).

10. A perfluorohexanone foam fire extinguishing system according to claim 9, characterized in that: The lower cover (402) is provided with a plug-in groove (410) which is arranged to cooperate with one end of the stirring shaft (406). One end of the stirring shaft (406) can be inserted into the plug-in groove (410) to be rotatably connected with the lower cover (402).

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