Vehicle-mounted fire-fighting foam spraying equipment

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to vehicle-mounted fire-fighting foam spraying equipment, which comprises a foam storage tank, a pressure balance pipe is fixedly mounted on a top barrel of the foam storage tank, a vertical pipe is fixedly mounted on an end pipe body of the pressure balance pipe, a threaded cover is in threaded connection with the end pipe body of the vertical pipe, and the pressure balance pipe is fixedly mounted on the top barrel of the foam storage tank. A filter screen is fixedly installed at the center of a bottom plate body of the threaded cover, a flow adjusting pump and a proportioning mixer are arranged on one side of the foam storage tank, the liquid inlet end of the flow adjusting pump is communicated with the foam storage tank through a suction pipe, and the liquid outlet end of the flow adjusting pump is communicated with the proportioning mixer through a conveying pipe. A water outlet pipe is arranged at the water inlet end of the proportional mixer, a water pump is fixedly installed at the end of the water outlet pipe, a woven hose is arranged at the spraying end of the proportional mixer, and a high-pressure nozzle is arranged at the end of the woven hose. The foam conveying device is beneficial to stable conveying of foam, and a good fire extinguishing effect can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field, specifically, vehicle mounted fire fighting foam injection equipment. BACKGROUND

[0002] In modern fire fighting system, the type of fire is various, including solid fire, liquid or meltable solid fire, gas fire etc., when extinguishing liquid or meltable solid fire, fire fighting foam is a very effective extinguishing agent, when spraying fire fighting foam, corresponding foam injection equipment is usually used, wherein, the foam injection equipment on fire engine is usually fixedly installed at corresponding position on the vehicle.

[0003] But the existing vehicle mounted fire fighting foam injection equipment has certain deficiency, first, it mainly sends water to the proportioning mixer through the water pump, relies on the pressure difference generated by the water pump to pressurize external water source, realizes sucking foam from the corresponding foam storage tank to the proportioning mixer, this process mainly relies on pressure difference, which causes unstable foam conveying in the pipe; in addition, most of the foam storage tanks are sealed structure, when a certain amount of foam is sucked in the foam storage tank, the pressure in the foam storage tank is less than the external pressure, which further causes the foam to be not smooth in conveying along the corresponding pipeline, which further affects the subsequent foam conveying amount and the stability of fire extinguishing operation. In view of this, we propose a vehicle mounted fire fighting foam injection equipment. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing vehicle mounted fire fighting foam injection equipment to solve the defects in the prior art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme:

[0006] Vehicle mounted fire fighting foam injection equipment, including foam storage tank, the top cylinder of foam storage tank is fixedly installed with pressure balance pipe that is connected with the inside of foam storage tank, the end of pressure balance pipe is fixedly installed with vertical pipe, the end of vertical pipe is screw threadedly connected with screw cover, the bottom plate body center position of screw cover is fixedly installed with filter screen, one side of foam storage tank is provided with flow regulating pump and proportioning mixer, the inlet of flow regulating pump and the foam storage tank are connected through suction pipe, the outlet of flow regulating pump and the proportioning mixer are connected through conveying pipe, the water inlet of proportioning mixer is provided with water outlet pipe, the end of water outlet pipe is fixedly installed with water pump, the injection end of proportioning mixer is provided with braided hose, the end of braided hose is provided with high pressure nozzle.

[0007] The end nozzle of the pressure balance pipe is preferably arranged downward, and the vertical pipe is arranged vertically downward.

[0008] A flow regulating valve is preferably fixedly installed on the conveying pipe, and a second one-way valve is also fixedly installed on the conveying pipe.

[0009] An inlet pipe is preferably fixedly installed on the water inlet end of the water pump, and the inlet pipe is in communication with an external water source.

[0010] A replenishment pipe is preferably fixedly installed on the top cylinder of the foam storage tank, and a hand valve is fixedly installed on the replenishment pipe.

[0011] A sealing cover is preferably threadedly connected to the top pipe body of the replenishment pipe, and a knob is fixedly installed on the top surface of the sealing cover.

[0012] A first one-way valve is preferably fixedly installed on the vertical pipe, and the first one-way valve is located above the threaded cover.

[0013] The capacity of the foam storage tank is preferably between 1-1.5L, and anti-skid stripes are arranged on the annular side surface of the threaded cover.

[0014] Compared with the prior art, the foam storage tank has the advantages that:

[0015] 1. The foam storage tank has the advantages that the pressure in the foam storage tank is automatically balanced, and foreign matters are prevented from entering, so that the purity of the foam stock solution is ensured and the stability of the conveying is ensured.

[0016] 2. The foam storage tank has the advantages that the one-way stable transmission of the foam stock solution conveying amount is realized, the foam conveying is stable and reliable, liquid backflow pollution is avoided, and stable conveying is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the foam storage tank;

[0018] Figure 2 FIG. 2 is a schematic diagram of part of the foam storage tank;

[0019] Figure 3 FIG. 3 is a schematic diagram of the structure of the foam storage tank;

[0020] Figure 4 FIG. 4 is a schematic diagram of the structure of the threaded cover and the filter screen of the foam storage tank;

[0021] The meanings of the various reference numerals in the drawings are as follows:

[0022] 1, foam storage tank; 10, supplement pipe; 11, manual valve; 12, sealing cover; 121, knob; 13, pressure balance pipe; 14, vertical pipe; 141, first one-way valve; 15, screw cover; 151, filter screen;

[0023] 2, flow regulating pump; 20, suction pipe; 21, conveying pipe; 211, flow regulating valve; 212, second one-way valve; 22, proportional mixer; 23, water pump; 231, water inlet pipe; 24, water outlet pipe; 25, braided hose; 26, high-pressure nozzle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 labor fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-4 The present application provides a technical solution: a vehicle-mounted fire-fighting foam spraying device, comprising a foam storage tank 1, a pressure balance pipe 13 fixedly installed on the top cylinder of the foam storage tank 1 and connected with the inside of the foam storage tank 1, a vertical pipe 14 fixedly installed on the end pipe body of the pressure balance pipe 13, a screw cover 15 threadedly connected to the end pipe body of the vertical pipe 14, and a filter screen 151 fixedly installed at the center position of the bottom plate body of the screw cover 15, so that the pressure inside the foam storage tank 1 is automatically balanced with the outside, and the filter screen 151 effectively blocks dust and impurities from entering the tank, ensuring the purity of the foam stock solution and the stability of the delivery.

[0026] Specifically, the foam storage tank 1 is provided with a flow regulating pump 2 and a proportional mixer 22, the liquid inlet end of the flow regulating pump 2 is connected with the foam storage tank 1 through a suction pipe 20, the liquid outlet end of the flow regulating pump 2 is connected with the proportional mixer 22 through a conveying pipe 21, the conveying pipe 21 is fixedly installed with a flow regulating valve 211, and the conveying pipe 21 is further fixedly installed with a second one-way valve 212, so that the fire fighter can adjust the delivery amount of the foam stock solution as needed, and the second one-way valve 212 prevents the liquid from flowing back to the flow regulating pump 2 and the foam storage tank 1, thereby ensuring the precision of the proportional mixing and the cleanliness of the pipeline.

[0027] In this embodiment, the water outlet end of the proportional mixer 22 is provided with a water outlet pipe 24, the end of the water outlet pipe 24 is fixedly installed with a water pump 23, the water inlet end of the water pump 23 is fixedly installed with a water inlet pipe 231, and the water inlet pipe 231 is connected with an external water source, so that the device can be flexibly connected to a municipal fire hydrant, a natural water source, etc., to meet the water demand in different scenarios and enhance the adaptability of the fire extinguishing operation.

[0028] Further, the spray end of the proportional mixer 22 is provided with a braided hose 25, and the end of the braided hose 25 is provided with a high-pressure nozzle 26 for normally arranging the braided hose 25 to perform the fire extinguishing operation.

[0029] In addition, the end nozzle of the pressure balance pipe 13 is arranged downward, and the vertical pipe 14 is arranged vertically downward, thereby preventing the dust falling downward from entering the vertical pipe 14.

[0030] It is worth noting that the top cylinder of the foam storage tank 1 is fixedly installed with a supplement pipe 10, the supplement pipe 10 is fixedly installed with a manual valve 11, the top cylinder of the supplement pipe 10 is threadedly connected with a sealing cover 12, and the top surface of the sealing cover 12 is fixedly installed with a knob 121, so that the firefighter can conveniently supplement the foam stock solution, the manual valve 11 controls the supplement flow, and the sealing cover 12 ensures the sealing property of the tank and the safety of the stock solution storage.

[0031] It is worth noting that the vertical pipe 14 is fixedly installed with a first one-way valve 141, and the first one-way valve 141 is located above the threaded cover 15, so that air can only enter the foam storage tank 1 in one direction, preventing the foam stock solution in the tank from overflowing due to pressure fluctuation, and preventing foreign matters from entering the tank in reverse direction to pollute the stock solution.

[0032] In the embodiment, the capacity of the foam storage tank 1 is between 1-1.5L, so that the tank body is adapted to the compact space of the vehicle; the annular side surface of the threaded cover 15 is provided with anti-skid stripes, the anti-skid stripes improve the holding stability during operation, and the threaded cover 15 is prevented from slipping off in an emergency.

[0033] Finally, it should be noted that the flow regulating pump 2, the water pump 23 and the proportional mixer 22 and other components involved in the utility model are all general standard components or components known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through conventional experimental methods, all the electrical components in the device are connected by wires, the specific connection means should be referred to the working principle of the utility model, and the electrical components are electrically connected in the order of operation, and the detailed connection means are all known in the art.

[0034] In use, the firefighter first confirms the foam stock solution in the foam storage tank 1, opens the sealing cover 12 by rotating the knob 121, supplements the stock solution by opening the manual valve 11, and then resets the sealing cover 12; the fire engine is started, the battery on the fire engine is powered, the water pump 23 is driven, water is pumped from the outside water source through the water inlet pipe 231, and the water is sent to the proportional mixer 22 through the water outlet pipe 24;

[0035] At the same time, the flow regulating pump 2 draws the original liquid from the foam storage tank 1 through the suction pipe 20, the flow regulating valve 211 on the delivery pipe 21 adjusts the flow as required, the second one-way valve 212 prevents backflow, and the original liquid is accurately proportioned with the water flow in the proportional mixer 22;

[0036] The mixed liquid is sent to the high-pressure nozzle 26 through the woven hose 25 for fire extinguishing operation, and the pressure balance pipe 13 and the vertical pipe 14 maintain stable pressure in the tank during operation, the first one-way valve 141 and the filter screen 151 cooperate to prevent dust and overflow, and ensure continuous and stable operation of the equipment.

[0037] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted fire-fighting foam injection apparatus comprising a foam storage tank (1), characterised in that: The top barrel of the foam storage tank (1) is fixedly installed with a pressure balance pipe (13) communicated with the inside of the foam storage tank (1), the end pipe of the pressure balance pipe (13) is fixedly installed with a vertical pipe (14), the end pipe of the vertical pipe (14) is threadedly connected with a threaded cover (15), the bottom plate body of the threaded cover (15) is fixedly installed with a filter screen (151) at the center position, one side of the foam storage tank (1) is provided with a flow regulating pump (2) and a proportional mixer (22), the liquid inlet end of the flow regulating pump (2) is communicated with the foam storage tank (1) through a suction pipe (20), the liquid outlet end of the flow regulating pump (2) is communicated with the proportional mixer (22) through a conveying pipe (21), the water outlet end of the proportional mixer (22) is provided with a water outlet pipe (24), the end of the water outlet pipe (24) is fixedly installed with a water pump (23), the injection end of the proportional mixer (22) is provided with a braided hose (25), the end of the braided hose (25) is provided with a high-pressure nozzle (26).

2. The vehicle-mounted fire-fighting foam injection apparatus of claim 1, wherein: The end pipe orifice of the pressure balance pipe (13) is arranged downward, and the vertical pipe (14) is arranged vertically downward.

3. The vehicle-mounted fire-fighting foam injection apparatus of claim 1, wherein: The conveying pipe (21) is fixedly installed with a flow regulating valve (211) and a second one-way valve (212).

4. The vehicle-mounted fire-fighting foam injection apparatus of claim 3, wherein: The water inlet end of the water pump (23) is fixedly installed with a water inlet pipe (231) communicated with an external water source.

5. The vehicle-mounted fire-fighting foam injection apparatus of claim 1, wherein: The top barrel of the foam storage tank (1) is fixedly installed with a supplementary pipe (10), and the supplementary pipe (10) is fixedly installed with a manual valve (11).

6. The vehicle-mounted fire-fighting foam injection apparatus of claim 5, wherein: The top pipe of the supplementary pipe (10) is threadedly connected with a sealing cover (12), and the top surface of the sealing cover (12) is fixedly installed with a knob (121).

7. The vehicle-mounted fire-fighting foam injection apparatus of claim 1, wherein: The vertical pipe (14) is fixedly installed with a first one-way valve (141) above the threaded cover (15).

8. The vehicle-mounted fire-fighting foam injection apparatus of claim 1, wherein: The capacity of the foam storage tank (1) is 1-1.5L, and the annular side surface of the threaded cover (15) is provided with anti-skid stripes.

Images