Fire-fighting medium-high expansion foam generator

Abstract

The utility model discloses a kind of medium-high times foam generators for fire fighting, comprising: base generator body, the right side of generator body is equipped with water hose connecting pipe, and the inside left side of generator body is provided with flow limiting pipe, and the outside of generator body is equipped with switch, the inside of flow limiting pipe is provided with medium-high times flow conversion mechanism for adjustable overall equipment injection mode, the medium-high times flow conversion mechanism including medium-high times conversion knob, high times liquid supply cavity, spray head pipe, spray head body and conveying pipe, the inside rotation of flow limiting pipe is provided with conveying pipe, and the outside of conveying pipe is fixedly installed with high times liquid supply cavity.The medium-high times foam generator for fire fighting, by medium times foam generator and high times foam generator are combined into one, can be switched between medium times and high times, so greatly improve the operation efficiency and save manpower and save time.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, specifically a medium-to-high expansion foam generator for fire protection. Background Technology

[0002] Foam generators are fire extinguishing devices used to generate and spray air foam. Medium and high expansion foam generators were developed by frontline firefighters based on practical experience and combined with previous fire extinguishing equipment. They are used in most petrochemical fire scenes and can complete the tasks of multiple rescue teams in the past, improving combat efficiency, saving manpower and time. For fire scenes, time is life. Currently, there are many kinds of medium and high expansion foam generators for fire fighting on the market, but they still have some shortcomings.

[0003] In practical applications, current medium-to-high expansion foam generators for firefighting, based on existing solutions and manufacturing processes, often require firefighters to first use the medium-expansion generator to extinguish the fire at the rescue site, and then move the high-expansion generator to cool the affected area. This process involves many personnel, takes a long time, and results in low efficiency and high risk. Therefore, we propose a new medium-to-high expansion foam generator for firefighting to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a medium-to-high expansion foam generator for fire fighting, in order to solve the problems mentioned in the background art. Currently, in the case of medium-to-high expansion foam generators for fire fighting, combined with existing solutions and actual production and processing, firefighters often use medium expansion generators to extinguish the fire first, and then move high expansion generators to cool down the fire area. This requires a lot of manpower, takes a long time to operate, and leads to problems such as low efficiency and high risk.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medium-to-high expansion foam generator for fire fighting, comprising:

[0006] The base generator body has a water hose connection pipe installed on the right side of the generator body, a flow limiting pipe installed on the left side inside the generator body, and a switch installed on the outside of the generator body.

[0007] Also includes:

[0008] The flow-limiting tube is internally equipped with a medium-to-high flow conversion mechanism for adjusting the overall equipment's injection mode.

[0009] Preferably, the medium-to-high flow conversion mechanism inside the flow limiting tube includes a medium-to-high flow conversion knob, a high flow supply chamber, a nozzle tube, a nozzle body, and a delivery tube. The delivery tube is rotatably installed inside the flow limiting tube, and the high flow supply chamber is fixedly installed on the outside of the delivery tube. The nozzle tube is installed at equal angles on the outside of the high flow supply chamber, and the medium-to-high flow conversion knob is fixedly connected to the right side of the delivery tube. The medium-to-high flow conversion knob is threadedly connected to the generator body.

[0010] Preferably, the high-expansion liquid supply chamber, the nozzle tube, and the delivery tube are all hollow inside, and the nozzle tube is made of aluminum alloy.

[0011] Preferably, the nozzle body is provided at equal angles on the outer side of the flow limiting tube, and the interior of the nozzle body is also hollow, and the nozzle body has the same diameter as the nozzle tube.

[0012] Preferably, a drive fan is installed at an equal angle on the outer side of the flow restrictor, and the drive fan is located on the right side of the nozzle body.

[0013] Preferably, the diameter of the hose connection pipe is set to 65mm, and a fire hose is connected to the right side of the hose connection pipe.

[0014] Preferably, a spiral jet is connected to the left side of the flow-limiting tube via a bearing, and the diameter of the spiral jet is set to 20mm, and a foaming net is provided on the outer side of the spiral jet.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the fire-fighting medium and high expansion foam generator combines a medium expansion foam generator and a high expansion foam generator into one, and can switch between medium and high expansion, which greatly improves work efficiency and saves manpower and time;

[0016] 1. It is equipped with a generator body, a water hose connection pipe and a switch. A water hose connection pipe with a diameter of 65mm is installed on the right side of the generator body. The right side can be connected to a fire hose. At the same time, a switch is installed on the outside of the generator body. Opening the switch can deliver foam mixture into the interior of the generator body. The generator body uses a liquid made of fire foam concentrate and water.

[0017] 2. It is equipped with a medium-to-high magnification conversion knob, a high magnification liquid supply chamber, a nozzle tube, and a nozzle body. A flow-limiting tube is installed on the left side inside the generator body, and a delivery tube is installed inside the flow-limiting tube. The right side of the delivery tube is fixedly connected to the medium-to-high magnification conversion knob. Since the medium-to-high magnification conversion knob is threaded to the generator body, rotating the medium-to-high magnification conversion knob will cause the delivery tube to rotate together. Since the high magnification liquid supply chamber is installed on the outside of the delivery tube, and the nozzle tube is set at an equal angle on the outside of the high magnification liquid supply chamber, the high magnification liquid supply chamber and the nozzle tube can rotate together. Since the nozzle body installed at an equal angle on the outside of the high magnification liquid supply chamber and the flow-limiting tube has the same diameter, when the nozzle tube is rotated to align with the nozzle body, the solution can be sprayed out from the nozzle body to produce high magnification foam.

[0018] 3. Equipped with a spiral jet injector, when the delivery pipe is rotated and the nozzle pipe and the aligned nozzle body are separated, the solution will enter the interior of the spiral jet injector and be sprayed out, thereby generating central foam;

[0019] 4. Equipped with a drive fan and a foaming net, the drive fan is located on the right side of the nozzle body, outside the flow-limiting tube. When the solution passes through the flow-limiting tube, the drive fan is impacted and rotates rapidly, generating airflow that blows up the solution to form high-expansion foam. This foam cluster covers the fire point, achieving the effects of cooling and oxygen isolation for fire extinguishing. The foaming net, located outside the nozzle body and spiral jet, serves to prevent physical impact and leakage of foaming material. Attached Figure Description

[0020] Figure 1 This is a frontal cross-sectional view of the present invention.

[0021] Figure 2 This is a front view cross-sectional structural diagram of the connection between the flow limiting tube, the medium-to-high magnification conversion knob, and the high magnification liquid supply chamber of this utility model;

[0022] Figure 3 This is a front view cross-sectional structural diagram of the connection between the nozzle body, drive fan blade and spiral jet generator of this utility model;

[0023] Figure 4 This is a left-side view of the connection structure between the nozzle body and the drive fan blade of this utility model;

[0024] Figure 5 This is a side view of the connection structure of the nozzle pipe, nozzle body and drive fan blade of this utility model;

[0025] Figure 6 This is a perspective view of the connection structure of the high-magnification liquid supply chamber, nozzle tube, and nozzle body of this utility model.

[0026] In the diagram: 1. Generator body; 2. Water hose connection pipe; 3. Switch; 4. Flow limiting pipe; 5. Medium to high magnification conversion knob; 6. High magnification liquid supply chamber; 7. Nozzle pipe; 8. Nozzle body; 9. Drive fan blade; 10. Spiral jet generator; 11. Foaming net; 12. Delivery pipe. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-6 This utility model provides a technical solution:

[0029] To address the problems existing in the prior art, this embodiment provides the following technical solution: a medium-to-high expansion foam generator for fire fighting, comprising a generator body 1 and a medium-to-high expansion flow conversion mechanism, which is located inside the flow limiting tube 4 and can freely switch between medium-expansion and high-expansion foam spraying, thereby greatly improving operational efficiency.

[0030] like Figure 1 , Figure 5 and Figure 6 As shown, a hose connection pipe 2 is installed on the right side of the generator body 1, which can be connected to a fire hose. By opening the switch 3 installed on the outside of the generator body 1, the mixed foam solution can be introduced into the interior of the generator body 1. The foam generator uses a liquid made by mixing fire foam concentrate and water.

[0031] A flow-limiting tube 4 is installed inside the left side of the generator body 1, allowing the solution to enter. A delivery tube 12 is installed inside the flow-limiting tube 4, and its right side is fixedly connected to a medium-to-high magnification conversion knob 5. The medium-to-high magnification conversion knob 5 is threadedly connected to the generator body 1. Rotating the knob causes the delivery tube 12 to rotate as well. A high-magnification supply chamber 6 is installed outside the delivery tube 12, and a nozzle tube 7 is installed at equal angles outside the high-magnification supply chamber 6. The interiors of the high-magnification supply chamber 6, nozzle tube 7, and delivery tube 12 are all hollow. Similarly, a nozzle body 8 is installed at equal angles outside the flow-limiting tube 4. The interior is also hollow, and the nozzle body 8 and nozzle tube 7 have the same diameter. When the delivery pipe 12 rotates, the high-expansion liquid supply chamber 6 and nozzle tube 7 will rotate together. When the nozzle tube 7 rotates to fit with the nozzle body 8, the solution can be sprayed out from the nozzle body 8. Since the right side of the nozzle body 8 is equipped with a drive fan 9, which is set at an angle to the outside of the flow limiting pipe 4, when the solution passes through the flow limiting pipe 4, the drive fan 9 will be impacted and rotate rapidly, thereby generating airflow and blowing the solution to form high-expansion foam. This allows the foam to cover the fire point, thereby achieving the effect of cooling and oxygen isolation fire extinguishing. In other words, high-expansion foam can be sprayed out from the flow limiting pipe 4.

[0032] Additionally, when the nozzle tube 7 rotates and detaches from the nozzle body 8, the solution enters the interior of the spiral jet ejector 10 and is ejected from the spiral jet ejector 10, generating medium-expansion foam. Furthermore, a foaming net 11 is installed on the outside of the spiral jet ejector 10 and the nozzle body 8. The foaming net 11 serves to prevent physical impact and leakage of foaming material.

[0033] This fire-fighting medium-to-high expansion foam generator utilizes the central foam for fire extinguishing and the high-expansion foam for oxygen isolation and cooling. By rotating a medium-to-high expansion conversion knob 5, the foam flow rate can be switched between medium and high expansion, combining the traditional medium-expansion and high-expansion foam generators into one. This significantly improves operational efficiency, allowing one team of rescuers to complete tasks that previously required multiple teams, thus increasing operational efficiency, saving manpower, and saving time. In fire-fighting situations, time is of the essence. Furthermore, this high-expansion foam generator weighs 5 kg.

[0034] Contents not described in detail in this specification are common knowledge to those skilled in the art. All standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature in the prior art. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0035] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A medium-to-high expansion foam generator for firefighting, comprising: The base generator body (1) has a water hose connection pipe (2) installed on the right side of the generator body (1), and a flow limiting pipe (4) is provided on the left side inside the generator body (1), and a switch (3) is installed on the outside of the generator body (1). Its characteristic is that it further includes: The flow limiting tube (4) is equipped with a medium-to-high flow conversion mechanism for adjusting the overall equipment injection mode.

2. A medium-to-high expansion foam generator for fire fighting according to claim 1, characterized in that: The medium-to-high flow conversion mechanism inside the flow limiting tube (4) includes a medium-to-high flow conversion knob (5), a high flow supply chamber (6), a nozzle tube (7), a nozzle body (8), and a delivery tube (12). The delivery tube (12) is rotatably installed inside the flow limiting tube (4), and the high flow supply chamber (6) is fixedly installed on the outside of the delivery tube (12). The nozzle tube (7) is installed at equal angles on the outside of the high flow supply chamber (6), and the medium-to-high flow conversion knob (5) is fixedly connected to the right side of the delivery tube (12). The medium-to-high flow conversion knob (5) is threadedly connected to the generator body (1).

3. A medium-to-high expansion foam generator for fire fighting according to claim 2, characterized in that: The high-expansion liquid supply chamber (6), nozzle pipe (7) and delivery pipe (12) are all hollow inside, and the nozzle pipe (7) is made of aluminum alloy.

4. A medium-to-high expansion foam generator for fire fighting according to claim 2, characterized in that: The nozzle body (8) is provided at equal angles on the outside of the flow limiting tube (4), and the inside of the nozzle body (8) is also hollow. The nozzle body (8) has the same diameter as the nozzle tube (7).

5. A medium-to-high expansion foam generator for fire fighting according to claim 4, characterized in that: The flow restrictor (4) is equipped with a drive fan (9) at an equal angle on the outside, and the drive fan (9) is located on the right side of the nozzle body (8).

6. A medium-to-high expansion foam generator for fire fighting according to claim 1, characterized in that: The diameter of the hose connection pipe (2) is set to 65mm, and a fire hose is connected to the right side of the hose connection pipe (2).

7. A medium-to-high expansion foam generator for fire fighting according to claim 5, characterized in that: The left side of the flow limiting tube (4) is connected to a spiral jet (10) via a bearing, and the diameter of the spiral jet (10) is set to 20mm. A foaming net (11) is provided on the outside of the spiral jet (10).

Images