Foaming net of high-expansion foam generator

Abstract

The utility model discloses a high-expansion foam generator foaming net which is characterized by comprising a foaming net body and a plurality of foaming holes, the foaming holes are distributed in the foaming net body in a matrix mode, each foaming hole is provided with a turned-over edge, the turned-over edges extend from the end faces of the foaming holes to one side of the foaming net body in the axis direction of the foaming holes, and the turned-over edges are connected with the foaming net body. And the extending directions of the flanges on the plurality of foaming holes are the same. Due to the design of the flanges on the foaming holes, the contact area between the bubbles and the foaming net is remarkably reduced, and the bubbles can be separated from the foaming net more easily in the forming and expanding process. Meanwhile, the design of the grooves on the turned-over edges further promotes the gradual reduction of the contact surfaces of the bubbles and the foaming net, and accelerates the separation process of the bubbles.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a foaming net of a high-expansion foam generator. Background Art

[0002] The high-expansion foam fire extinguishing system is a common fire extinguishing system, and the high-expansion foam generator is the terminal equipment of this system. The high-expansion foam generator is generally composed of a fan, a water-based fire extinguishing agent nozzle, and a foaming net covered with small holes. During operation, the nozzle located behind the foaming net sprays the water-based fire extinguishing agent into the inside of the foaming net. At the same time, the fan blows air into the foaming net, forming bubbles in the small holes in the foaming net. As the fan blows air, the small holes in the foaming net gradually expand and break away from the foaming net. When a large amount of foam leaves the foaming net, the tension between the bubbles and the foaming net causes them to burst, resulting in low foaming efficiency of the high-expansion foam generator and reduced utilization of the fire extinguishing agent.

[0003] Conventional high-expansion foam generators typically consist of a fan, a foam liquid nozzle, and a foaming net covered with small holes. During operation, the nozzle, located behind the net, sprays liquid foaming fire extinguishing agent into the net. Simultaneously, the fan blows air into the net, causing bubbles to form through the small holes in the net. These bubbles then expand and break away from the net as the fan blows air.

[0004] The existing technologies all focus on research and innovation on the overall structure of the high-expansion foam generator, and the foaming net is also studied based on shape and components, but the foaming holes on the foaming net are not studied. Utility Model Content

[0005] The utility model aims to provide a foaming net for a high-expansion foam generator, aiming to improve the foaming efficiency of the high-expansion foam generator and the utilization rate of the system fire extinguishing agent by changing the shape and structure of the small holes on the foaming net.

[0006] The utility model is realized by adopting the following technical scheme: a foaming net of a high-expansion foam generator, characterized in that it includes a foaming net and a plurality of foaming holes, the foaming holes are distributed in a matrix on the foaming net, each foaming hole is provided with a flange, the flange extends from the end face of the foaming hole along the axial direction of the foaming hole to one side of the foaming net, and the flanges on the plurality of foaming holes extend in the same direction.

[0007] Furthermore, a groove is provided at the end of the flange, the opening direction of the groove is consistent with the extension direction of the flange, and the groove is a V-shaped groove.

[0008] Furthermore, a plurality of grooves are provided along the end surface of the flange, and the plurality of grooves are arranged at equal distances.

[0009] Furthermore, a fire extinguishing agent nozzle is provided on the opposite side of the foaming net where the groove is located. The fire extinguishing agent nozzle is used to form a fire extinguishing agent film on the foaming net and cooperate with the fan to form bubbles at the foaming holes.

[0010] Furthermore, during the foaming process, the bubbles are gradually offset to the foaming side by the wind and move toward the distal end along the flange. At the same time, during the movement, the bubbles are affected by the grooves, and the contact area with the foaming net gradually decreases, and eventually they break away from the foaming net.

[0011] Furthermore, when the bubble detaches from the flange, fire extinguishing agent is stored in the groove to ensure that sufficient fire extinguishing agent is provided when the bubble detaches, thereby promoting the healing of the bubble opening.

[0012] Furthermore, the flanging of the foaming holes is achieved by stamping.

[0013] The high-expansion foam generator foaming net described in the utility model has the following beneficial effects:

[0014] Improved bubble detachment efficiency: The flange design on the foaming hole significantly reduces the contact area between the bubbles and the foaming net, making it easier for bubbles to detach from the foaming net during formation and expansion. At the same time, the groove design on the flange further promotes the gradual reduction of the contact area between the bubbles and the foaming net, accelerating the bubble detachment process.

[0015] Improve foaming speed: Since bubbles can quickly break away from the foaming net, this greatly shortens the generation and separation time of a single bubble, allowing the foaming net to generate new bubbles more frequently, thereby improving the overall foaming speed.

[0016] Reduce production costs: The flanging on the foaming hole is achieved by stamping. This process is simple and efficient, does not require additional material costs, and is conducive to reducing the overall production cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of a foaming net for a high-expansion foam generator;

[0019] Figure 2 This is a partial schematic diagram of a foaming net of a high-expansion foam generator;

[0020] Figure 3This is a partial cross-sectional view of a foaming net of a high-expansion foam generator;

[0021] Figure 4 This is a schematic diagram of the working principle of a high-expansion foam generator foaming net;

[0022] In the figure, 1-foaming net, 2-foaming hole, 3-flanging, 4-groove, 5-bubble, 6-air blowing by fan, 7-fire extinguishing agent nozzle, 8-fire extinguishing agent. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] like Figure 1-4 As shown, a high-expansion foam generator foaming net includes a foaming net 1, a foaming hole 2, a plurality of foaming holes 2, and a matrix distribution on the foaming net 1, a flange 3 is provided on the foaming hole 2, and the flange 3 extends from the end face of the foaming hole 2 along the axial direction of the foaming hole 2, and the flanges 3 on the multiple foaming holes 2 are in the same direction.

[0026] The flange 3 is provided with a groove 4, which is provided at the end of the flange 3 and has an opening direction in the same direction as the extension direction of the flange 3. The groove 4 is a V-shaped groove. A plurality of grooves 4 are provided along the end surface of the flange 3 and are arranged at equal intervals.

[0027] During use, a fire extinguishing agent nozzle 7 is provided on the opposite side of the groove 4 on the foaming net 1. The fire extinguishing agent nozzle 7 sprays fire extinguishing agent 8 onto the foaming net to form a thin film of fire extinguishing agent. At the same time, a fan 6 is provided on one side of the nozzle 7. As the air blows into the foaming holes 2, the fire extinguishing agent thin film forms bubbles 5 on the foaming side. As the bubbles gradually grow larger, they are gradually deflected toward the foaming side by the wind force. The bubbles 5 gradually break away from the foaming net and move toward the distal end along the flange 3. At the same time, during the movement of the bubbles, the contact area between the bubbles 5 and the foaming net 1 is gradually reduced by the influence of the groove 4, and the bubbles eventually break away from the foaming net 1.

[0028] The flange 3 of the foaming hole 2 can reduce the contact area between the bubble 5 and the foaming net 1, making it easier for the bubble 5 to detach from the foaming net; the groove 4 on the flange 3 can gradually reduce the contact area between the bubble 5 and the foaming net 1, making it easier for the opening of the bubble 5 to gradually shrink and smoothly detach from the foaming net 1; in the process of the bubble 5 becoming larger, the groove 4 on the flange has a water storage (water-based fire extinguishing agent) effect, which can ensure that sufficient fire extinguishing agent 8 is provided when the bubble 5 detaches from the flange 3, thereby ensuring the healing of the bubble opening; the bubble 5 quickly detaches from the foaming net 1, which can shorten the generation and detachment time of a single bubble, facilitate the generation of new bubbles, and thus increase the foaming speed; 5. The flange 3 on the foaming hole 2 can be achieved by stamping, which can achieve effective results without increasing material costs.

[0029] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. A high-expansion foam generator foaming net, characterized in that: The invention comprises a foaming net (1) and a plurality of foaming holes (2), wherein the foaming holes (2) are distributed in a matrix on the foaming net (1), and each foaming hole (2) is provided with a flange (3), wherein the flange (3) extends from the end face of the foaming hole (2) along the axial direction of the foaming hole (2) toward one side of the foaming net (1), and the flanges (3) on the plurality of foaming holes (2) extend in the same direction.

2. The high-expansion foam generator foaming net according to claim 1, characterized in that: A groove (4) is provided at the end of the flange (3); the opening direction of the groove (4) is consistent with the extension direction of the flange (3), and the groove (4) is a V-shaped groove.

3. The high-expansion foam generator foaming net according to claim 2, characterized in that: A plurality of the grooves (4) are provided along the end surface of the flange (3), and the plurality of grooves (4) are arranged at equal distances.

4. The high-expansion foam generator foaming net according to claim 2, characterized in that: A fire extinguishing agent nozzle (7) is provided on the opposite side of the foaming net (1) where the groove (4) is located. The fire extinguishing agent nozzle (7) is used to form a fire extinguishing agent film on the foaming net (1) and cooperate with the fan (6) to form bubbles (5) at the foaming holes (2).

5. The foaming net of a high-expansion foam generator according to claim 4, characterized in that: During the foaming process, the bubbles (5) are gradually deflected toward the foaming side by the wind and move toward the distal end along the flange (3). Simultaneously, during the movement, the bubbles (5) are affected by the groove (4), and the contact surface with the foaming net (1) gradually decreases, and the bubbles (5) eventually separate from the foaming net (1).

6. The foaming net of a high-expansion foam generator according to claim 5, characterized in that: When the bubble (5) is separated from the flange (3), the groove (4) stores a fire extinguishing agent (8), thereby ensuring that sufficient fire extinguishing agent (8) is provided when the bubble (5) is separated, thereby promoting the healing of the bubble opening.

7. The foaming net of a high-expansion foam generator according to claim 1, characterized in that: The flanging (3) of the foaming hole (2) is achieved by stamping.

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