Adjustable nozzle for fire extinguisher

Abstract

The utility model discloses an adjustable nozzle for a fire extinguisher, which belongs to the technical field of fire fighting, comprises a fluid director and an adjuster, and is characterized in that an inner cavity is arranged at the central position in the fluid director, an outer cavity is arranged at the central position in the adjuster, one end of the fluid director is closed, and the closed end of the fluid director is positioned in the outer cavity; water outlet holes are annularly formed in the closed end of the fluid director at equal intervals in a penetrating mode, the inner cavity, the water outlet holes and the outer cavity are communicated, a first step is arranged at the closed end of the fluid director, a third step is arranged on the side, away from the water outlet holes, of the first step, and an umbrella-shaped part is arranged at the end, close to the closed end of the fluid director, of the adjuster. A second step is arranged on the side, close to the water outlet hole, of the umbrella-shaped part, the inner diameter of the second step is larger than the outer diameter of the first step and the outer diameter of the third step, and the adaptability of the nozzle serving as the fire extinguisher to different fire disasters is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to an adjustable nozzle for a fire extinguisher. Background Art

[0002] Under existing technical conditions, high-rise buildings are the optimal solution for efficient use of urban land and have gradually become one of the symbols of the city. However, compared with traditional buildings, high-rise buildings have greater safety hazards in fire protection. High-rise buildings are generally equipped with basic fire extinguishing equipment, such as fire extinguishers. Fire extinguishers are equipped with fluid fire extinguishing agents, such as water-based fire extinguishing agents, foam, etc., which are sprayed out through nozzles to extinguish fires. There are two main ways of spraying fire extinguishing agents from nozzles: umbrella-shaped spraying and direct current spraying. The umbrella-shaped spraying has a short distance and a large coverage area, while the direct current spraying has a long distance and a small coverage area. The traditional nozzle has a fixed structure and can only execute one spraying method. Different advantages and disadvantages make different nozzles suitable for different scenarios. However, fires are generally sudden, and it is difficult to ensure that the fire extinguishers equipped in advance can meet the actual fire extinguishing needs. Based on this situation, how to improve the adaptability of nozzles used in fire extinguishers to different fires has become an increasingly urgent problem that relevant technical personnel need to solve. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an adjustable nozzle for a fire extinguisher.

[0004] A fire extinguisher nozzle includes a deflector and a regulator, and is characterized in that an inner cavity is provided at the inner center of the deflector, an outer cavity is provided at the inner center of the regulator, one end of the deflector is closed, the closed end of the deflector is located inside the outer cavity, water outlet holes are equidistantly arranged in an annular shape through the closed end of the deflector, the inner cavity, the water outlet holes and the outer cavity are connected, a first step is provided at the closed end of the deflector, a third step is provided on the side of the first step away from the water outlet hole, an umbrella-shaped portion is provided at one end of the regulator close to the closed end of the deflector, a second step is provided on the side of the umbrella-shaped portion close to the water outlet hole, and the inner diameter of the second step is larger than the outer diameters of the first step and the third step.

[0005] Furthermore, the shape of the first step is a conical surface, and the shape of the umbrella-shaped portion is a conical surface.

[0006] Furthermore, an external threaded portion is provided on the outside of the deflector, and an internal threaded portion is provided on the inside of the regulator. The internal threaded portion is threadedly connected to the external threaded portion, and the external threaded portion is located on the side of the water outlet away from the first step.

[0007] Furthermore, a sealing ring is provided on the outside of the deflector, and the sealing ring is fitted with the deflector and the regulator. There are two groups of sealing rings, and the two groups of sealing rings are parallel to each other. The sealing ring is located between the external threaded portion and the water outlet.

[0008] Furthermore, air inlet holes are provided in an equidistant annular pattern inside the umbrella-shaped portion.

[0009] Furthermore, a mounting portion is provided at one end of the deflector away from the closed end thereof.

[0010] The beneficial effects of the adjustable nozzle for fire extinguisher of the utility model are:

[0011] 1. The user only needs to turn the regulator to adjust the relative position of the second step to the first and third steps. When the second step is between the first and third steps, the first and second steps cooperate to guide the fire extinguishing agent, while the third step blocks and redirects the fire extinguishing agent, allowing the fire extinguishing agent to be sprayed along the inner wall of the umbrella-shaped portion, thus achieving umbrella-shaped spray. When the third step is entirely inside the outer cavity, the fire extinguishing agent can be directly sprayed in a straight line at the second step, where the diameter is reduced, effectively improving the adaptability of the nozzle to different fires.

[0012] 2. In the umbrella-shaped spraying state, when the fire extinguishing agent is sprayed along the inner wall of the umbrella, the air inlet hole effectively realizes the continuous introduction of air from the outside of the umbrella to the inside of the fire extinguishing agent. When the fire extinguishing agent is foam, this method can effectively increase the foaming ratio, thereby effectively increasing the coverage area of ​​the fire extinguishing agent;

[0013] 3. The conduction among the inner cavity, the water outlet and the outer cavity provides a good structural basis for the smooth discharge of the fire extinguishing agent. The sealing ring effectively prevents the reverse flow or even leakage of the fire extinguishing agent inside the outer cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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, but this does not limit the scope of protection of the present invention.

[0015] Figure 1 This is a schematic cross-sectional view of the umbrella-shaped spraying state of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0018] Figure 4It is a schematic cross-sectional structure diagram of the DC injection state of the utility model.

[0019] Among them, 1-deflector, 2-inner cavity, 3-regulator, 4-outer cavity, 5-umbrella-shaped part, 6-inner thread part, 7-outer thread part, 8-sealing ring, 9-first step, 10-air inlet, 11-second step, 12-third step, 13-installation part, 14-water outlet. DETAILED DESCRIPTION

[0020] To make the description clearer, the adjustable nozzle for a fire extinguisher of the present invention is further described with reference to the accompanying drawings.

[0021] A fire extinguisher nozzle includes a deflector 1 and a regulator 3, characterized in that an inner cavity 2 is provided at the inner center of the deflector 1, an outer cavity 4 is provided at the inner center of the regulator 3, one end of the deflector 1 is closed, the closed end of the deflector 1 is located inside the outer cavity 4, and water outlet holes 14 are equidistantly provided in an annular manner through the closed end of the deflector 1, the inner cavity 2, the water outlet holes 14, and the outer cavity 4 are connected, a first step 9 is provided at the closed end of the deflector 1, a third step 12 is provided on the side of the first step 9 away from the water outlet hole 14, an umbrella-shaped portion 5 is provided on the end of the regulator 3 close to the closed end of the deflector 1, a second step 11 is provided on the side of the umbrella-shaped portion 5 close to the water outlet hole 14, and the inner diameter of the second step 11 is larger than the outer diameters of the first step 9 and the third step 12.

[0022] Furthermore, the first step 9 is in the shape of a conical surface, and the umbrella-shaped portion 5 is in the shape of a conical surface.

[0023] Furthermore, an external threaded portion 7 is provided on the outside of the deflector 1, and an internal threaded portion 6 is provided on the inside of the regulator 3. The internal threaded portion 6 is threadedly connected to the external threaded portion 7, and the external threaded portion 7 is located on the side of the water outlet 14 away from the first step 9.

[0024] Furthermore, a sealing ring 8 is provided on the outside of the deflector 1 , and the sealing ring 8 is in contact with both the deflector 1 and the regulator 3 . There are two groups of sealing rings 8 , and the two groups of sealing rings 8 are parallel to each other. The sealing ring 8 is located between the external threaded portion 7 and the water outlet 14 .

[0025] Furthermore, air inlet holes 10 are provided in an equidistant annular pattern inside the umbrella-shaped portion 5 .

[0026] Furthermore, a mounting portion 13 is provided at one end of the deflector 1 away from the closed end thereof.

[0027] The working principle of the adjustable nozzle for fire extinguisher of the present invention is as follows: the deflector 1 is installed at the installation position on the fire extinguisher through the installation part 13, and the required spray state is selected according to the actual situation of the fire. In the default setting, the third step 12 is located inside the outer cavity 4 as a whole. At this time, the nozzle is in a direct current spray state, which is suitable for small-area fires at a distance. When the fire extinguisher is started, the fire extinguishing agent flows smoothly through the first step 9 and the third step 12 through the inner cavity 2, the water outlet 14, and the outer cavity 4, and is sprayed in a direct current state under the restriction that the diameter of the second step 11 is smaller than that of the outer cavity 4, and quickly reaches the fire point until the fire is extinguished. When it is a large fire at a close distance, the fire extinguishing agent flows smoothly through the first step 9 and the third step 12. When an area fire occurs, turn the regulator 3, and with the cooperation of the internal threaded portion 6 and the external threaded portion 7, the second step 11 moves toward the first step 9 until the second step 11 moves between the first step 9 and the third step 12. The fire extinguisher is activated, and the fire extinguishing agent flows smoothly to the first step 9 through the inner cavity 2, the water outlet 14, and the outer cavity 4. Under the cooperation of the first step 9 and the second step 11, it flows to the third step 12. The third step 12 blocks the fire extinguishing agent and redirects it. The redirection causes the fire extinguishing agent to hit the inner wall of the umbrella-shaped portion 5 and spread out in an umbrella shape along the inner wall of the umbrella-shaped portion 5, covering a large area of ​​the fire extinguishing point until the fire is extinguished. In this way, the normal use of the nozzle can be completed.

[0028] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that do not require creative work should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. An adjustable nozzle for a fire extinguisher, comprising a deflector and a regulator, characterized in that: An inner cavity is provided at the center position of the inner part of the deflector, an outer cavity is provided at the center position of the inner part of the regulator, one end of the deflector is closed, the closed end of the deflector is located inside the outer cavity, water outlet holes are equidistantly arranged through the closed end of the deflector, the inner cavity, the water outlet holes and the outer cavity are connected, a first step is provided at the closed end of the deflector, a third step is provided on the side of the first step away from the water outlet hole, an umbrella-shaped portion is provided at one end of the regulator close to the closed end of the deflector, a second step is provided on the side of the umbrella-shaped portion close to the water outlet hole, and the inner diameter of the second step is larger than the outer diameters of the first step and the third step.

2. The adjustable nozzle for a fire extinguisher according to claim 1, characterized in that: The first step is in the shape of a conical surface, and the umbrella-shaped portion is in the shape of a conical surface.

3. The adjustable nozzle for a fire extinguisher according to claim 1, characterized in that: An external threaded portion is provided on the outside of the deflector, and an internal threaded portion is provided on the inside of the regulator. The internal threaded portion is threadedly connected to the external threaded portion, and the external threaded portion is located on a side of the water outlet away from the first step.

4. The adjustable nozzle for a fire extinguisher according to claim 3, characterized in that: A sealing ring is provided outside the deflector, and the sealing ring is fitted with the deflector and the regulator. There are two groups of sealing rings, and the two groups of sealing rings are parallel to each other. The sealing ring is located between the external threaded portion and the water outlet.

5. The adjustable nozzle for a fire extinguisher according to claim 1, characterized in that: Air inlet holes are arranged in an equidistant annular shape inside the umbrella-shaped portion.

6. The adjustable nozzle for a fire extinguisher according to claim 1, characterized in that: The deflector is provided with a mounting portion at one end away from the closed end thereof.

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