Air foam fire extinguishing equipment

Abstract

The invention relates to the technical field of fire safety equipment, in particular to air foam fire extinguishing equipment which comprises an oil tank, a guide plate is fixedly connected to the inner wall of the oil tank, two symmetrically-arranged supporting frames are fixedly connected to the surface of the oil tank, and a spray pipe is fixedly connected to the upper surface of the left supporting frame. A shell is fixedly connected to the right end of the spray pipe, a conveying pipe is fixedly connected to the right end of the shell, the upper surface of the supporting frame located on the right side is fixedly connected with the surface of the conveying pipe, a water pipe is fixedly connected to the right end of the conveying pipe, and a foaming plate is fixedly connected to the inner wall of the conveying pipe. By arranging the rotating drum with the spiral blades and the scraping plate, continuous stirring and mixing of foam and water are achieved under the driving of the driving device, the mixing uniformity and the foam quality are improved, residues attached to the inner wall of a foaming plate can be automatically scraped off in the rotating process, blocking is effectively prevented, and the service life of the foaming plate is prolonged. And the stability and the reliability of the equipment in long-term use are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire safety equipment, and particularly relates to an air foam fire extinguishing device. BACKGROUND

[0002] The air foam fire extinguishing device is key fire-fighting equipment for extinguishing oil, alcohol and part of flammable liquid fires. Its principle is to generate a stable and dense foam cover layer by fully mixing foam mixture and air, so as to isolate oxygen and cool the burning surface, thereby achieving rapid fire extinguishing. The device is widely used in oil storage tanks, chemical plants, airports and other places, and its performance is directly related to the timeliness and effectiveness of fire fighting, so it has become an important research and improvement direction in the field of fire safety.

[0003] However, in actual application, it is found that the air foam fire extinguishing device in the prior art still has some defects. Firstly, the foam generation and mixing structure of the traditional device often relies on simple static mixing or inefficient stirring, which leads to insufficient foam uniformity, and residues are easily attached to the inner wall of the foaming device after long-term use, causing blockage, affecting the fire extinguishing efficiency and increasing the maintenance burden. Secondly, most devices rely on external power or independent power source to drive the stirring or conveying parts, which has a complex structure, high energy consumption, and may not start normally when the power supply is limited or fails at the fire scene, reducing the reliability of the system. Thirdly, the foam output flow of the existing device is mostly manually adjusted or fixed and cannot be adjusted, which is difficult to control the supply of fire extinguishing agent in real time and accurately according to the actual situation of the fire scene, leading to waste of resources when the fire is small at the beginning, and insufficient supply when the fire expands, affecting the overall controllability and economy of the fire extinguishing effect. Therefore, we propose an air foam fire extinguishing device to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide an air foam fire extinguishing device to solve the problems raised in the background.

[0005] The technical scheme of the present application is: an air foam fire extinguishing device, comprising an oil tank, the inner wall of the oil tank is fixedly connected with a guide plate, the surface of the oil tank is fixedly connected with two symmetrically arranged support frames, the upper surface of the left support frame is fixedly connected with a spray pipe, the right end of the spray pipe is fixedly connected with a shell, the right end of the shell is fixedly connected with a conveying pipe, the upper surface of the right support frame and the surface of the conveying pipe are fixedly connected, the right end of the conveying pipe is fixedly connected with a water pipe, the inner wall of the conveying pipe is fixedly connected with a foaming plate, the inner wall of the shell is fixedly connected with a sealing glass, the foaming plate is provided with an auxiliary mixing device and a driving device, and the conveying pipe is provided with a flow adjusting device.

[0006] Preferably, the auxiliary mixing device comprises a rotating drum, a plurality of circular holes are arranged on the surface of the rotating drum, a spiral blade is fixedly connected to the surface of the rotating drum, a scraper is fixedly connected to the surface of the spiral blade, a rotating shaft is fixedly connected to the inner wall of the rotating drum, a plurality of support rods are fixedly connected to the surface of the rotating shaft, the ends of the support rods away from the rotating shaft are fixedly connected to the inner wall of the rotating drum, and a gear one is fixedly connected to the right end of the rotating shaft.

[0007] Preferably, the driving device comprises a gear two, the gear two is meshingly connected to the surface of the gear one, a driving shaft is fixedly connected to the right end of the gear two, a bevel gear one is fixedly connected to the right end of the driving shaft, a bevel gear two is meshingly connected to the surface of the bevel gear one, a rotating rod is fixedly connected to the end of the bevel gear two away from the bevel gear one, a plurality of annularly arranged impeller blades are fixedly connected to the surface of the rotating rod, a rectangular plate one is rotatably connected to the surface of the rotating rod, a rectangular frame is rotatably connected to the surface of the driving shaft, and a rectangular plate two is fixedly connected to the right side of the rectangular frame.

[0008] Preferably, the inner wall of the foaming plate is fixedly connected with a circular ring, the left end of the conveying pipe is rotatably connected with a plurality of annularly arranged adjusting plates, the sidewall of each adjusting plate is fixedly connected with a cylinder, the inner wall of the circular ring is rotatably connected with a circular cover, a plurality of annularly arranged arc-shaped grooves one are arranged on the end of the circular cover away from the circular ring, two symmetrically arranged arc-shaped grooves two are arranged on the end of the circular cover away from the circular ring, a gear ring is fixedly sleeved on the surface of the circular cover, the left end of the gear ring is rotatably connected with the right end of the circular ring, a gear three is meshingly connected to the surface of the gear ring, the gear three is rotatably connected with the right end of the circular ring, the right end of the gear three is electrically connected with a controller, and the surface of the conveying pipe is fixedly sleeved with a fixed ring.

[0009] Preferably, the left end of the spray pipe penetrates through the surface of the oil tank and extends to the inner wall of the guide plate.

[0010] Preferably, the right end of the rotating drum is rotatably connected with the left end of the circular cover, and the scraper is rotatably connected with the inner wall of the foaming plate.

[0011] Preferably, the sidewalls of the rectangular plate one and the rectangular plate two are fixedly connected with the left end of the fixed ring, and the rectangular plate one and the rectangular plate two are slidably connected with the inner walls of the adjacent arc-shaped grooves two.

[0012] Preferably, the surface of each cylinder is slidably connected with the inner wall of the adjacent arc-shaped groove one.

[0013] The air foam fire extinguishing equipment provided by the application has the following improvements and advantages compared with the prior art. One: the application, by setting the rotating drum with spiral blade and scraper, under the drive device driven to realize the continuous stirring and mixing of foam and water, not only improve the mixing uniformity and foam quality, but also can automatically scrape the residues attached to the inner wall of the foaming plate in the rotating process, effectively prevent clogging, guarantee the stability and reliability of the equipment in long-term use.

[0014] Second: the application, using impeller based on water flow drive, gear transmission structure, without external power source can realize the rotation of the drum, simple structure and energy efficient, the design utilizes the flow energy of the water in the fire extinguishing process to drive the mixing device to run, which not only reduces the complexity and energy consumption of the equipment, but also improves the response speed and overall fire extinguishing efficiency of the system.

[0015] Third: the application, through the controller linkage gear adjusting mechanism, can adjust the opening of the water inlet according to the fire situation, realize the precise control of the foam generation flow, this kind of self-adaptive adjustment mechanism helps to reasonably allocate the amount of fire extinguishing agent under different fire conditions, not only ensures the fire extinguishing effect, but also avoids the waste of resources, improves the intelligence and practicality of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further explained in combination with the drawings and examples: Figure 1 is the main structure schematic diagram of the application; Figure 2 is the foaming plate structure schematic diagram of the application; Figure 3 is the spiral blade structure schematic diagram of the application; Figure 4 is the rotating drum structure schematic diagram of the application; Figure 5 is the drive shaft structure schematic diagram of the application; Figure 6 is the impeller blade structure schematic diagram of the application; Figure 7 is the circular cover structure schematic diagram of the application; Figure 8 is the fixed ring structure schematic diagram of the application; Figure 9 is the adjusting plate structure schematic diagram of the application.

[0017] Explanation of reference signs: 1, oil tank; 2, guide plate; 3, support frame; 4, spray pipe; 5, shell; 6, conveying pipe; 7, water pipe; 8, foaming plate; 9, sealing glass; 10, rotating drum; 11, round hole; 12, spiral blade; 13, scraper; 14, rotating shaft; 15, support rod; 16, gear one; 17, gear two; 18, drive shaft; 19, bevel gear one; 20, bevel gear two; 21, rotating rod; 22, impeller blade; 23, rectangular plate one; 24, rectangular frame; 25, rectangular plate two; 26, circular ring; 27, adjusting plate; 28, cylinder; 29, circular cover; 30, arc-shaped groove one; 31, arc-shaped groove two; 32, gear ring; 33, gear three; 34, controller; 35, fixed ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described below in detail, and it should be apparent that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] The present application provides an air foam fire extinguishing device by improvement, and the technical solutions of the present application are as follows: As shown in Figure 1 - Figure 9 An air foam fire extinguishing device, comprising an oil tank 1, the inner wall of the oil tank 1 is fixedly connected with a guide plate 2, the surface of the oil tank 1 is fixedly connected with two symmetrically arranged support frames 3, the upper surface of the left support frame 3 is fixedly connected with a spray pipe 4, the right end of the spray pipe 4 is fixedly connected with a shell 5, the right end of the shell 5 is fixedly connected with a conveying pipe 6, the upper surface of the right support frame 3 and the surface of the conveying pipe 6 are fixedly connected, the right end of the conveying pipe 6 is fixedly connected with a water pipe 7, the inner wall of the conveying pipe 6 is fixedly connected with a foaming plate 8, the inner wall of the shell 5 is fixedly connected with a sealing glass 9, the foaming plate 8 is provided with an auxiliary mixing device and a driving device, and the conveying pipe 6 is provided with a flow adjusting device.

[0020] Further, the auxiliary mixing device comprises a rotating drum 10, the rotating drum 10 is arranged in the foaming plate 8, a plurality of symmetrically arranged round holes 11 are formed in the surface of the rotating drum 10, the surface of the rotating drum 10 is fixedly connected with spiral blades 12, the surface of the spiral blades 12 is fixedly connected with scrapers 13, the inner wall of the rotating drum 10 is fixedly connected with a rotating shaft 14, the surface of the rotating shaft 14 is fixedly connected with a plurality of symmetrically arranged support rods 15, the end of each support rod 15 away from the rotating shaft 14 is fixedly connected with the inner wall of the rotating drum 10, and the right end of the rotating shaft 14 is fixedly connected with a gear one 16, by arranging the rotating shaft 14, when the rotating shaft 14 rotates, the rotating drum 10 can be driven to rotate, on the other hand, the arrangement of the support rods 15 can also drive the rotating drum 10 to rotate.

[0021] Further, the driving device comprises a gear two 17, the gear two 17 is meshed with the surface of the gear one 16, the right end of the gear two 17 is fixedly connected with a driving shaft 18, the right end of the driving shaft 18 is fixedly connected with a bevel gear one 19, the surface of the bevel gear one 19 is meshed with a bevel gear two 20, the end of the bevel gear two 20 away from the bevel gear one 19 is fixedly connected with a rotating rod 21, the surface of the rotating rod 21 is fixedly connected with a plurality of annularly arranged impeller blades 22, the surface of the rotating rod 21 is rotatably connected with a rectangular plate one 23, the surface of the driving shaft 18 is rotatably connected with a rectangular frame 24, the right side of the rectangular frame 24 is fixedly connected with a rectangular plate two 25, when the water flow enters the rotating drum 10 through the conveying pipe 6, the water flow impacts the impeller blades 22, the impeller blades 22 drive the rotating rod 21 to rotate, the rotating rod 21 rotates, drives the bevel gear two 20 to rotate, through the bevel gear one 19, the driving shaft 18 rotates, through the meshing of the gear two 17 and the gear one 16, finally makes the rotating shaft 14 rotate.

[0022] Further, the inner wall of the foaming plate 8 is fixedly connected with a circular ring 26, the left end of the conveying pipe 6 is rotatably connected with a plurality of annularly arranged adjusting plates 27, the side wall of each adjusting plate 27 is fixedly connected with a cylinder 28, the inner wall of the circular ring 26 is rotatably connected with a circular cover 29, the end of the circular cover 29 away from the circular ring 26 is provided with a plurality of annularly arranged arc-shaped grooves one 30, the end of the circular cover 29 away from the circular ring 26 is provided with two symmetrically arranged arc-shaped grooves two 31, the surface of the circular cover 29 is fixedly sleeved with a gear ring 32, the left end of the gear ring 32 is rotatably connected with the right end of the circular ring 26, the surface of the gear ring 32 is meshed with a gear three 33, the gear three 33 is rotatably connected with the right end of the circular ring 26, the right end of the gear three 33 is electrically connected with a controller 34, the surface of the conveying pipe 6 is fixedly sleeved with a fixed ring 35, by setting the controller 34, the rotation of the gear three 33 is controlled, when the gear three 33 rotates, it will drive the gear ring 32 to rotate, and then drive the circular cover 29 to rotate, when the circular cover 29 rotates, through the cooperation of the cylinder 28 and the arc-shaped groove one 30, the adjusting plate 27 rotates, so as to control the size of the channel composed of a plurality of adjusting plates 27, and then adjust the water inflow.

[0023] Further, the left end of the spray pipe 4 penetrates the surface of the oil tank 1 and extends to the inner wall of the guide plate 2, through this setting, the outlet of the spray pipe 4 can be accurately aligned with the guide space formed by the guide plate 2, ensuring that the foam extinguishing agent can be quickly and uniformly covered in the oil tank 1 after being guided by the guide plate 2, effectively improving the foam diffusion efficiency and extinguishing effect.

[0024] Further, the right end of the rotating drum 10 is rotatably connected with the left end of the circular cover 29, the scraper 13 is rotatably connected with the inner wall of the foaming plate 8, by setting the scraper 13, when the scraper 13 rotates, it can rub the inner wall of the foaming plate 8, preventing the foaming plate 8 from being blocked.

[0025] Further, the side wall of the rectangular plate one 23 and the rectangular plate two 25 is fixedly connected with the left end of the fixed ring 35, and the rectangular plate one 23 and the rectangular plate two 25 are slidably connected with the inner wall of the adjacent arc-shaped groove two 31, by arranging the rectangular frame 24 and the rectangular plate two 25, the driving shaft 18 can be stably supported in the rotating drum 10.

[0026] Further, the surface of each cylinder 28 is slidably connected with the inner wall of the adjacent arc-shaped groove one 30, when the circular cover 29 rotates, the inner wall of the arc-shaped groove one 30 moves relative to the cylinder 28, so that the cylinder 28 moves along the track of the arc-shaped groove one 30, thereby making the adjusting plate 27 rotate.

[0027] Working principle: the water pipe 7 is connected with the external fire pump source, the water flows into the rotating drum 10 through the conveying pipe 6, part of the water body directly penetrates to the foaming plate 8 area through the circular hole 11 arranged on the surface of the rotating drum 10, and preliminarily mixes with the foam generated by the foaming plate 8, at the same time, the water flow drives the impeller blade 22 on the rotating rod 21 to rotate, the rotating rod 21 drives the bevel gear two 20 to rotate, the bevel gear two 20 meshes with the bevel gear one 19 to drive the driving shaft 18 to rotate, the gear two 17 at the end of the driving shaft 18 meshes with the gear one 16, thereby driving the rotating shaft 14 to rotate, the rotating shaft 14 transmits power to the rotating drum 10 through the plurality of supporting rods 15, so that the rotating drum 10 continuously rotates, when the rotating drum 10 rotates, the spiral blade 12 fixedly arranged on the outer wall of the rotating drum 10 strongly stirs the mixed liquid of the foam and the water, realizes uniform mixing, and the scraper 13 arranged on the surface of the spiral blade 12 synchronously scrapes the residues possibly attached to the inner wall of the foaming plate 8 with rotation, prevents clogging, and the fully mixed foam extinguishing agent is sprayed out through the spray pipe 4, high-speed impacts the sealing glass 9 arranged in the shell 5, which may cause the sealing glass 9 to break, the foam extinguishing agent enters the inside of the oil tank 1, is guided and diffused through the guide plate 2 fixedly connected with the inner wall of the oil tank 1, the guide plate 2 uniformly guides the foam to the entire oil surface, forms a covering layer, isolates air and rapidly suppresses the flame, realizes efficient fire extinguishing. In addition, the controller 34 controls the gear three 33 to rotate according to the real-time fire signal, the gear three 33 drives the gear ring 32 to rotate, the gear ring 32 drives the circular cover 29 to rotate, the arc-shaped groove one 30 arranged on the end surface of the circular cover 29 cooperates with the cylinder 28 on the adjusting plate 27, promotes the plurality of adjusting plates 27 to synchronously deflect, thereby accurately adjusting the opening area of the water inlet of the conveying pipe 6, realizes self-adaptive accurate regulation and control of the water inflow, and finally achieves the purpose of efficient fire extinguishing.

[0028] The above description enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will accord with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air foam extinguishing apparatus comprising a tank (1), characterised in that: The inner wall of the oil tank (1) is fixedly connected with a guide plate (2), the surface of the oil tank (1) is fixedly connected with two symmetrically arranged supporting frames (3), the upper surface of the supporting frame (3) on the left is fixedly connected with a spray pipe (4), the right end of the spray pipe (4) is fixedly connected with a shell (5), the right end of the shell (5) is fixedly connected with a conveying pipe (6), the upper surface of the supporting frame (3) on the right and the surface of the conveying pipe (6) are fixedly connected, the right end of the conveying pipe (6) is fixedly connected with a water pipe (7), the inner wall of the conveying pipe (6) is fixedly connected with a foaming plate (8), the inner wall of the shell (5) is fixedly connected with a sealing glass (9), the foaming plate (8) is provided with an auxiliary mixing device and a driving device, and the conveying pipe (6) is provided with a flow adjusting device.

2. An air foam fire extinguishing apparatus according to claim 1, characterized in that: The auxiliary mixing device comprises a rotating drum (10), the rotating drum (10) is arranged in the foaming plate (8), a plurality of symmetrically arranged circular holes (11) are formed in the surface of the rotating drum (10), a spiral blade (12) is fixedly connected to the surface of the rotating drum (10), a scraper (13) is fixedly connected to the surface of the spiral blade (12), a rotating shaft (14) is fixedly connected to the inner wall of the rotating drum (10), a plurality of symmetrically arranged supporting rods (15) are fixedly connected to the surface of the rotating shaft (14), one end of each supporting rod (15) away from the rotating shaft (14) is fixedly connected with the inner wall of the rotating drum (10), and the right end of the rotating shaft (14) is fixedly connected with a gear one (16).

3. An air foam fire extinguishing apparatus according to claim 2, characterised in that: The driving device comprises a gear two (17), the gear two (17) is in meshing connection with the surface of the gear one (16), the right end of the gear two (17) is fixedly connected with a driving shaft (18), the right end of the driving shaft (18) is fixedly connected with a bevel gear one (19), the surface of the bevel gear one (19) is in meshing connection with a bevel gear two (20), one end of the bevel gear two (20) away from the bevel gear one (19) is fixedly connected with a rotating rod (21), a plurality of annularly arranged impeller blades (22) are fixedly connected to the surface of the rotating rod (21), a rectangular plate one (23) is rotatably connected to the surface of the rotating rod (21), a rectangular frame (24) is rotatably connected to the surface of the driving shaft (18), and the right side of the rectangular frame (24) is fixedly connected with a rectangular plate two (25).

4. An air foam fire extinguishing apparatus according to claim 1, characterized in that: The inner wall of the foaming plate (8) is fixedly connected with a circular ring (26), the left end of the conveying pipe (6) is rotatably connected with a plurality of annularly arranged adjusting plates (27), the side wall of each adjusting plate (27) is fixedly connected with a cylinder (28), the inner wall of the circular ring (26) is rotatably connected with a circular cover (29), the end, away from the circular ring (26), of the circular cover (29) is provided with a plurality of annularly arranged arc-shaped grooves (30), the end, away from the circular ring (26), of the circular cover (29) is provided with two symmetrically arranged arc-shaped grooves (31), the surface of the circular cover (29) is fixedly sleeved with a gear ring (32), the left end of the gear ring (32) is rotatably connected with the right end of the circular ring (26), the surface of the gear ring (32) is meshedly connected with a gear (33), the gear (33) is rotatably connected with the right end of the circular ring (26), the right end of the gear (33) is electrically connected with a controller (34), and the surface of the conveying pipe (6) is fixedly sleeved with a fixed ring (35).

5. An air foam fire extinguishing apparatus according to claim 1, characterized in that: The left end of the spray pipe (4) penetrates through the surface of the oil tank (1) and extends to the inner wall of the guide plate (2).

6. An air foam extinguishing apparatus according to claim 2 or 4, characterized in that: The right end of the rotating drum (10) is rotatably connected with the left end of the circular cover (29), and the scraper (13) is rotatably connected with the inner wall of the foaming plate (8).

7. An air foam extinguishing apparatus according to claim 3 or 4, characterised in that: The side walls of the rectangular plate (23) and the rectangular plate (25) are fixedly connected with the left end of the fixed ring (35), and the rectangular plate (23) and the rectangular plate (25) are slidably connected with the inner walls of the adjacent arc-shaped grooves (31).

8. An air foam fire extinguishing apparatus according to claim 4, characterized in that: The surface of each cylinder (28) is slidably connected with the inner wall of the adjacent arc-shaped groove (30).

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