Fire fighting foam mixing apparatus

Abstract

The utility model relates to fire -fighting foam mixing technical field discloses fire -fighting foam mixing equipment, including mixing jar, water pump and liquid discharge, the top intercommunication of mixing jar has cavity cylinder, the top intercommunication of cavity cylinder has water injection cylinder, the outer wall right side intercommunication of water injection cylinder has water pipe, the inboard fixed connection of cavity cylinder has helical drainage board, the inboard rotation of helical drainage board is connected with the second rotation bar, the top fixed connection of second rotation bar has vane, the top fixed connection of water injection cylinder has foam cylinder, the top intercommunication of foam cylinder has foam pipe, the outer wall all around intercommunication of foam cylinder has dispersion pipe. In the utility model, through the spray head, the foam is sprayed in the mixing jar, the spiral flow of water is made into the mixing jar through the helical drainage board, the water flow forms the whirlpool in the mixing jar, and under the stirring collision of multiple stirring rod no.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting foam liquid mixing technology, and in particular to fire-fighting foam mixing equipment. Background Technology

[0002] Firefighting foam mixing equipment is a core component of modern fire protection systems. Its function is to precisely mix foam extinguishing agent with water in a specific ratio to form a foam mixture with highly efficient fire extinguishing performance. During fire fighting, the equipment introduces air into the mixture to generate a large amount of foam to cover the surface of the burning material, thereby achieving the effects of isolating oxygen, reducing temperature, and inhibiting combustion. It is applicable to petrochemical and warehousing logistics sites that are prone to large-scale fires and can effectively deal with various flammable liquid and solid fires.

[0003] Traditional fire-fighting foam mixing equipment involves injecting water to compress foam in a foam tank, allowing the foam and water from another pipe to mix naturally within the equipment. This method has low mixing efficiency and makes it difficult to quickly and thoroughly mix the foam and water. Existing solutions involve adding a stirring structure to the mixing equipment, using water flow in conjunction with the stirring structure to improve the speed of water-foam mixing. However, relying solely on the natural diffusion and collision of fluids for mixing results in uneven water flow velocity distribution, making it difficult for the foam liquid and water to fully contact each other in a short time, leading to low mixing efficiency. Especially in fire emergency scenarios, mixing delays directly affect the foam generation speed, weaken the timeliness of fire extinguishing, and prevent the timely formation of an effective fire extinguishing barrier, causing the fire to spread and expand. Therefore, a fire-fighting foam mixing equipment is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a fire-fighting foam mixing device, which aims to improve the problem of uneven water flow velocity distribution in the prior art, making it difficult for foam liquid and water to come into sufficient contact in a short time, resulting in low mixing efficiency.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a fire-fighting foam mixing device, including a mixing tank, a water pump, and a drain outlet. The top of the mixing tank is connected to a hollow cylinder, the top of the hollow cylinder is connected to a water injection cylinder, and the right side of the outer wall of the water injection cylinder is connected to a water pipe. A spiral guide plate is fixedly connected to the inner side of the hollow cylinder, and a rotating rod is rotatably connected to the inner side of the spiral guide plate. A blade is fixedly connected to the top of the rotating rod. A foam cylinder is fixedly connected to the top of the water injection cylinder, and a foam pipe is connected to the top of the foam cylinder. Dispersion pipes are connected around the outer wall of the foam cylinder, and nozzles are connected to the bottom ends of multiple dispersion pipes. The bottoms of multiple nozzles are connected to the top perimeter of the mixing tank. Multiple stirring rods are fixedly connected to the outer wall of the rotating rod, and stirring blades are fixedly connected to the bottom of the rotating rod. An anti-clogging mechanism is provided at the bottom of the mixing tank to clear residual foam from the inner wall of the pipes.

[0006] As a further description of the above technical solution:

[0007] The anti-clogging mechanism includes a drain pipe connected to the bottom of a drain outlet. A servo motor is fixedly connected to the bottom of the drain pipe. The output end of the servo motor passes through the bottom of the drain pipe and is fixedly connected to a rotating rod. Anti-clogging plates are fixedly connected to all four sides of the outer wall of the rotating rod. Each of the anti-clogging plates has a slanted groove on its top. Anti-corrosion scrapers are fixedly connected to the opposite sides of each of the anti-clogging plates. A transmission pipe is connected to the left side of the outer wall of the drain pipe. A pressure sensor is fixedly connected to the left side of the outer wall of the drain pipe.

[0008] As a further description of the above technical solution:

[0009] Multiple stirring rods are fixedly connected to the outer wall of the stirring rod one, and the multiple stirring rods two are arranged at equal intervals.

[0010] As a further description of the above technical solution:

[0011] The right end of the water pipe is connected to a water inlet, and a pressure sensor is fixedly connected to the top left end of the mixing tank.

[0012] As a further description of the above technical solution:

[0013] A mounting plate is fixedly connected to the right side of the outer wall of the mixing tank, and a fixing bracket is fixedly connected to the right side of the mounting plate.

[0014] As a further description of the above technical solution:

[0015] The right side of the fixing frame has multiple screw holes, and bolts are threaded into the inner side of the screw holes.

[0016] As a further description of the above technical solution:

[0017] A rubber pad is fixedly connected to the right side of the fixing frame, and multiple grooves are provided on the right side of the rubber pad. Multiple reinforcing plates are fixedly connected to the outer wall of the cavity cylinder.

[0018] As a further description of the above technical solution:

[0019] An observation window is fixedly connected to the front side of the outer wall of the mixing tank, and the observation window has a scale on the front side.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when water flows into the water injection cylinder, the water flow drives the blades to rotate. At the same time, after the blades rotate, foam is injected into the foam cylinder through the foam pipe. The foam is sprayed into the mixing tank through the nozzle. Then, the water flows into the mixing tank through the spiral guide plate, so that the water flow forms a vortex in the mixing tank. Under the stirring and collision of multiple stirring rods, the foam is fully mixed in the water, improving the thorough mixing.

[0022] 2. In this utility model, the drain pipe and the drain outlet are installed and connected to each other. After the foam liquid is discharged, the pressure sensor is used to monitor the inside of the drain pipe in real time. The servo motor is started to drive the anti-blocking plate to clear the blockage between the drain pipe and the drain outlet. The anti-corrosion scraper is tightly attached to the inner wall of the drain pipe to fully scrape off the foam residue and improve the efficiency of clearing the pipe. Attached Figure Description

[0023] Figure 1 This is a perspective view of the fire-fighting foam mixing device proposed in this utility model;

[0024] Figure 2 This is a front view of the fire-fighting foam mixing device proposed in this utility model;

[0025] Figure 3 This is an exploded view of the fire-fighting foam mixing device proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the anti-clogging mechanism of the fire-fighting foam mixing equipment proposed in this utility model;

[0027] Figure 5 This is a split view of the anti-clogging plate of the fire-fighting foam mixing equipment proposed in this utility model.

[0028] Legend:

[0029] 1. Mixing tank; 2. Anti-clogging mechanism; 201. Drain pipe; 202. Servo motor; 203. Rotating rod one; 204. Anti-clogging plate; 205. Inclined groove; 206. Anti-corrosion scraper; 207. Transmission pipe; 208. Pressure sensor one; 3. Hollow cylinder; 4. Water injection cylinder; 5. Water pipe; 6. Spiral guide plate; 7. Rotating rod two; 8. Blade; 9. Foam pipe; 10. Foam cylinder; 11. Dispersion pipe; 12. Nozzle; 13. Stirring rod one; 14. Stirring blade; 15. Stirring rod two; 16. Drain port; 17. Water inlet; 18. Mounting plate; 19. Fixing bracket; 20. Screw hole; 21. Bolt; 22. Rubber pad; 23. Groove; 24. Observation window; 25. Scale; 26. Pressure sensor two; 27. Water pump; 28. Reinforcing plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a fire-fighting foam mixing device, including a mixing tank 1, a water pump 27, and a drain port 16. A cavity cylinder 3 is connected to the top of the mixing tank 1, and a water injection cylinder 4 is connected to the top of the cavity cylinder 3. The cavity cylinder 3 and the water injection cylinder 4 are interconnected and integrally formed, allowing the injected water to flow smoothly into the mixing tank 1. A water pipe 5 is connected to the right side of the outer wall of the water injection cylinder 4, creating a moving water injection angle. A spiral guide plate 6 is fixedly connected to the inner side of the cavity cylinder 3, and a rotating rod 7 is rotatably connected to the inner side of the spiral guide plate 6. A blade 8 is fixedly connected to the top of the rotating rod 7. A foam cylinder 10 is fixedly connected to the top of the water injection cylinder 4, and the flow direction of the water can drive the blade 8 to rotate. A foam pipe 9 is connected to the top of the foam cylinder 10, and dispersion pipes 11 are connected around the outer wall of the foam cylinder 10. The bottom ends of multiple dispersion pipes 11 are... The mixing tank 10 is connected to a nozzle 12. Foam is injected into the foam cylinder 10 through the foam pipe 9. The bottom of the nozzles 12 is connected to the top of the mixing tank 1 around the perimeter. Foam is injected into the nozzles 12 through the surrounding dispersion pipes 11. Under the stirring and collision of multiple stirring rods 13 and 15, the foam is fully mixed in the water. Multiple stirring rods 13 are fixedly connected to the outer wall of the rotating rod 2 7. Stirring blades 14 are fixedly connected to the bottom of the rotating rod 2 7. Multiple stirring rods 2 15 are fixedly connected to the outer wall of the stirring rod 13. Under the rotation of the stirring blades 14, the foam liquid is prevented from settling and is driven upward to improve the full mixing. The multiple stirring rods 2 15 are arranged at equal intervals. The right end of the water pipe 5 is connected to the inlet 17. The top left end of the mixing tank 1 is fixedly connected to the pressure sensor 26. The bottom of the mixing tank 1 is equipped with an anti-blocking mechanism 2. The anti-blocking mechanism 2 is used to clear the foam residue on the inner wall of the pipe.

[0032] Specifically, the top of the mixing tank 1 is connected to a hollow cylinder 3, and the top of the hollow cylinder 3 is connected to a water injection cylinder 4. These two parts are connected by an integral molding process, ensuring that the injected water source can flow smoothly into the mixing tank 1. A water pipe 5 is connected to the right side of the outer wall of the water injection cylinder 4, and the water pipe 5 is connected to the edge of the outer wall of the water injection cylinder 4, creating a moving water injection angle, which can more effectively inject water into the mixing tank 1. A spiral guide plate 6 is fixedly connected to the inner side of the hollow cylinder 3, and a rotating rod 7 is installed in the middle of the spiral guide plate 6. A blade 8 is fixed to the top of the rotating rod 7. When the water flows into the water injection cylinder 4, the direction of the water flow can drive the blade 8 to rotate, thereby improving the mixing efficiency. A foam cylinder 10 is fixed to the top of the water injection cylinder 4. When the foam is injected into the foam cylinder 10 through the foam pipe 9, the impact force of the water flow will cause the foam in the foam cylinder 10 to mix with the foam. The water is thoroughly mixed. The outer wall of the foam cylinder 10 is connected to the dispersion pipes 11, and the bottom ends of the multiple dispersion pipes 11 are all connected to the nozzles 12. In this way, after the foam is injected into the foam cylinder 10 through the foam pipes 9, it is sprayed into the mixing tank 1 through the dispersion pipes 11 and the nozzles 12. Then, the water flow drives the blades 8 to rotate, and the water flow flows into the mixing tank 1 through the spiral guide plate 6, so that the water flow forms a vortex in the mixing tank 1. Under the stirring and collision of multiple stirring rods 13 and stirring rods 15, the foam can be fully mixed in the water. Multiple stirring rods 13 are fixedly connected to the outer wall of the rotating rod 2 7, and stirring blades 14 are fixed to the bottom end of the rotating rod 2 7. Multiple stirring rods 15 are fixed to the outer wall of the stirring rods 13. Under the rotation of the stirring blades 14, the foam liquid is prevented from settling and is driven upward, which improves the thorough stirring and ensures the uniformity of the mixture. The right end of the water pipe 5 is connected to the water inlet 17. The top left end of the mixing tank 1 is fixedly connected to the pressure sensor 26, which is used to monitor the pressure inside the mixing tank 1 in real time. The bottom of the mixing tank 1 is equipped with an anti-clogging mechanism 2, which can effectively clear the foam remaining on the inner wall of the pipe and ensure the normal operation of the equipment.

[0033] Reference Figure 1 , Figure 4 and Figure 5The anti-clogging mechanism 2 includes a drain pipe 201 connected to the bottom end of a drain outlet 16. The drain pipe 201 and the drain outlet 16 are interconnected to ensure the smooth discharge of the mixed foam. A servo motor 202 is fixedly connected to the bottom end of the drain pipe 201. The output end of the servo motor 202 passes through the bottom end of the drain pipe 201 and is fixedly connected to a rotating rod 203. Anti-clogging plates 204 are fixedly connected to all four sides of the outer wall of the rotating rod 203. The anti-clogging plates 204 and the rotating rod 203 are integrally formed. After the foam liquid is discharged, the anti-clogging plates 204 are driven by starting the servo motor 202. 04. The interior between the drain pipe 201 and the drain port 16 is treated. The top of the multiple anti-blocking plates 204 is provided with inclined grooves 205. The anti-corrosion scraper 206 is fixedly connected to the opposite side of the multiple anti-blocking plates 204. The anti-corrosion scraper 206 is installed on the outside of the anti-blocking plate 204. The anti-corrosion scraper 206 is made of rubber and has anti-corrosion effect. The left side of the outer wall of the drain pipe 201 is connected to the transmission pipe 207. The left side of the outer wall of the drain pipe 201 is fixedly connected to the pressure sensor 208. The pressure sensor 208 is used to monitor the interior of the drain pipe 201 in real time.

[0034] Specifically, the bottom end of the drain pipe 201 is connected to the bottom end of the drain outlet 16. This interconnected installation ensures smooth discharge of the mixed foam. A servo motor 202 is fixed to the bottom end of the drain pipe 201. The output end of the servo motor 202 passes through the bottom end of the drain pipe 201 and is firmly connected to the rotating rod 203. Anti-blocking plates 204 are evenly fixed around the outer wall of the rotating rod 203. These anti-blocking plates 204 are integrally formed with the rotating rod 203. After the foam liquid is discharged, by activating the servo motor 202, the anti-blocking plates 204 can effectively unclog the internal space and inner wall between the drain pipe 201 and the drain outlet 16. The top of the anti-clogging plate 204 is designed with inclined grooves 205, and the anti-corrosion scraper 206 is fixedly connected to the opposite side of the anti-clogging plate 204. The anti-corrosion scraper 206 is installed on the outside of the anti-clogging plate 204. They are made of rubber, which not only has anti-corrosion properties, but also can fit tightly against the inner wall of the drain pipe 201, thereby thoroughly scraping away foam residue and further improving the efficiency of pipe unblocking. In addition, the left side of the outer wall of the drain pipe 201 is connected to the transmission pipe 207, and the left side of the outer wall of the drain pipe 201 is fixed with a pressure sensor 208. The function of the pressure sensor 208 is to monitor the inside of the drain pipe 201 in real time to ensure the good operation of the entire system.

[0035] Reference Figure 1 , Figure 2 and Figure 4A mounting plate 18 is fixedly connected to the right side of the outer wall of the mixing tank 1. A fixing bracket 19 is fixedly connected to the right side of the mounting plate 18. Multiple screw holes 20 are opened on the right side of the fixing bracket 19. Bolts 21 are threaded on the inner side of the screw holes 20. A rubber pad 22 is fixedly connected to the right side of the fixing bracket 19. Multiple grooves 23 are opened on the right side of the rubber pad 22. Multiple reinforcing plates 28 are fixedly connected to the outer wall of the cavity cylinder 3. An observation window 24 is fixedly connected to the front side of the outer wall of the mixing tank 1. A scale 25 is opened on the front side of the observation window 24.

[0036] Specifically, a mounting plate 18 is fixed to the right side of the outer wall of the mixing tank 1. The mounting plate 18 is welded to the fixing frame 19 to improve the firmness. It is connected to the bolt 21 through the screw hole 20 to ensure the stability of the entire structure. A rubber pad 22 is fixed to the right side of the fixing frame 19. Its function is to reduce vibration and noise, and at the same time provide additional support. An observation window 24 is fixed to the front side of the outer wall of the mixing tank 1. The front part of the observation window 24 is designed with scales 25. These scales 25 make it convenient for operators to observe and measure the state of the material in the mixing tank 1, so as to better control the mixing process.

[0037] Working principle: First, when water flows into the water injection cylinder 4, the direction of the water flow can drive the blades 8 to rotate. At the same time, foam is injected into the foam cylinder 10 through the foam pipe 9. The bottom of multiple nozzles 12 is connected to the top of the mixing tank 1 around the perimeter, and is injected into the nozzles 12 through the surrounding dispersion pipes 11. The foam is sprayed into the mixing tank 1 through the nozzles 12. Then, after driving the blades 8 to rotate, the water flows into the mixing tank 1 through the spiral guide plate 6, causing the water to form a vortex in the mixing tank 1. Under the stirring and collision of multiple stirring rods 13 and 15, the foam is fully mixed in the water. Under the rotation of the stirring blades 14, the foam liquid is prevented from settling and is driven upward, improving the full mixing.

[0038] Furthermore, the drain pipe 201 and the drain port 16 are connected to each other. After the foam liquid is discharged, the pressure sensor 208 is used to monitor the inside of the drain pipe 201 in real time. By starting the servo motor 202, the anti-blocking plate 204 is driven to unclog the inside and inner wall between the drain pipe 201 and the drain port 16. The anti-corrosion scraper 206 is tightly attached to the inner wall of the drain pipe 201 to unclog the pipe.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire-fighting foam mixing apparatus comprising a mixing tank (1), a water pump (27) and a discharge outlet (16), characterized in that: The top of the mixing tank (1) is connected to a hollow cylinder (3), the top of the hollow cylinder (3) is connected to a water injection cylinder (4), the right side of the outer wall of the water injection cylinder (4) is connected to a water pipe (5), a spiral guide plate (6) is fixedly connected to the inner side of the hollow cylinder (3), a rotating rod (7) is rotatably connected to the inner side of the spiral guide plate (6), a blade (8) is fixedly connected to the top of the rotating rod (7), a foam cylinder (10) is fixedly connected to the top of the water injection cylinder (4), and a foam pipe is connected to the top of the foam cylinder (10). (9) The outer wall of the foam cylinder (10) is connected to a dispersion tube (11), and the bottom of the dispersion tube (11) is connected to a nozzle (12). The bottom of the nozzle (12) is connected to the top of the mixing tank (1). The outer wall of the rotating rod (7) is fixedly connected to a plurality of stirring rods (13), and the bottom of the rotating rod (7) is fixedly connected to a stirring blade (14). The bottom of the mixing tank (1) is provided with an anti-blocking mechanism (2), which is used to clear the foam remaining on the inner wall of the pipe.

2. A fire fighting foam mixing apparatus according to claim 1, characterised in that: The anti-clogging mechanism (2) includes a drain pipe (201), which is connected to the bottom end of the drain port (16). A servo motor (202) is fixedly connected to the bottom end of the drain pipe (201). The output end of the servo motor (202) passes through the bottom end of the drain pipe (201) and is fixedly connected to a rotating rod (203). Anti-clogging plates (204) are fixedly connected to the outer walls of the rotating rod (203). A slanted groove (205) is opened on the top of each of the multiple anti-clogging plates (204). Anti-corrosion scrapers (206) are fixedly connected to the opposite sides of the multiple anti-clogging plates (204). A transmission pipe (207) is connected to the left side of the outer wall of the drain pipe (201). A pressure sensor (208) is fixedly connected to the left side of the outer wall of the drain pipe (201).

3. The fire fighting foam mixing apparatus of claim 1, wherein: Multiple stirring rods (15) are fixedly connected to the outer wall of the stirring rod one (13), and the multiple stirring rods two (15) are arranged at equal intervals.

4. The fire fighting foam mixing apparatus of claim 1, wherein: The right end of the water pipe (5) is connected to a water inlet (17), and the top left end of the mixing tank (1) is fixedly connected to a pressure sensor (26).

5. The fire fighting foam mixing apparatus of claim 1, wherein: An installation plate (18) is fixedly connected to the right side of the outer wall of the mixing tank (1), and a fixing bracket (19) is fixedly connected to the right side of the installation plate (18).

6. A fire fighting foam mixing apparatus according to claim 5, characterised in that: The right side of the fixing frame (19) is provided with multiple screw holes (20), and the inner side of the screw holes (20) is threaded with bolts (21).

7. The fire fighting foam mixing apparatus of claim 5, wherein: A rubber pad (22) is fixedly connected to the right side of the fixing frame (19), and multiple grooves (23) are provided on the right side of the rubber pad (22). Multiple reinforcing plates (28) are fixedly connected to the outer wall of the cavity cylinder (3).

8. The fire fighting foam mixing apparatus of claim 1, wherein: An observation window (24) is fixedly connected to the front side of the outer wall of the mixing tank (1), and a scale (25) is opened on the front side of the observation window (24).

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