Fire extinguishing device capable of improving spraying efficiency of dry powder

Abstract

The utility model relates to a fire extinguishing device for improving the spraying efficiency of dry powder. The fire extinguishing device comprises a shell, a slip ring, an ignition unit and a film coating layer, the shell is of a closed cavity structure; the slip ring is arranged in the shell, a gas production bin is arranged on one side of the slip ring, and a dry powder bin is arranged on the other side of the slip ring; the slip ring is movable within the housing. Part of the ignition unit is arranged in the gas production bin and interacts with the gas production medicament in the gas production bin, and the other part of the ignition unit extends to the outside of the shell. The dry powder bin is provided with a nozzle communicating inside and outside. A film covering layer is attached to the end face, located in the dry powder bin, of the sliding ring. According to the fire extinguishing device capable of improving the dry powder spraying efficiency, the film covering layer is attached to the sliding ring, when the fire extinguishing device is not started, the film covering layer can shield the pressure relief opening in the sliding ring, and dry powder can be prevented from leaking from the pressure relief opening. And the film covering layer can prevent the pressure in the dry powder bin from being reduced when the fire extinguishing device is not started, and it is guaranteed that the dry powder extinguishing agent has enough eruption amount when the fire extinguishing device erupts.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing equipment, in particular to a fire extinguishing device capable of improving dry powder spraying efficiency. Background Art

[0002] The internal structure of a dry powder fire extinguishing device is usually composed of a gas-generating agent, a slip ring, and a dry powder agent. The instantaneous gas production of the gas-generating agent increases the pressure inside the device, and the pressure drives the slip ring to move, thereby discharging the dry powder fire extinguishing agent from the device to extinguish the fire. The spray rate of the dry powder fire extinguishing agent has a great influence on the fire extinguishing effect and fire extinguishing capacity. There is a gas-generating chamber under the slip ring structure. In order to prevent the failure of the slip ring structure from causing the device to explode, a pressure relief hole must be left on the surface of the slip ring structure. However, there are two problems with the pressure relief hole: First, due to the small particle size of the dry powder, there is a problem of leakage from the pressure relief hole; second, the existence of the pressure relief hole causes the pressure to be partially released, resulting in a reduction in the spray volume of the dry powder fire extinguishing agent, affecting the fire extinguishing effect. Utility Model Content

[0003] The utility model aims to solve the technical problems in the prior art that the pressure relief holes of dry powder fire extinguishing devices are prone to leakage and the existence of the pressure relief holes causes partial release of pressure and reduces the spraying amount of dry powder fire extinguishing agent, and provides a fire extinguishing device with improved dry powder spraying efficiency.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A fire extinguishing device for improving dry powder spraying efficiency, comprising: a shell, a slip ring and an ignition unit, and also comprising: a coating layer;

[0006] The shell is configured as a closed cavity structure; the slip ring is configured inside the shell, one side of the slip ring is configured as a gas production bin, and the other side of the slip ring is configured as a dry powder bin; the slip ring can move inside the shell, and when the fire extinguishing is started, the slip ring moves from one side of the gas production bin to one side of the dry powder bin;

[0007] Part of the ignition unit is disposed in the gas production chamber to interact with the gas production agent in the gas production chamber, and another part of the ignition unit extends to the outside of the shell;

[0008] The dry powder bin is provided with a nozzle communicating with the inside and outside;

[0009] The coating layer is attached to the end surface of the slip ring located in the dry powder bin.

[0010] Furthermore, the coating layer is fixed on the end surface of the slip ring by glue dispensing.

[0011] Furthermore, the coating layer is a PVC self-adhesive sticker.

[0012] Furthermore, the thickness of the coating layer is 0.5 mm-0.8 mm.

[0013] Furthermore, a plurality of tear lines are arranged on the coating layer.

[0014] Furthermore, the tear line is configured as a star-shaped structure radiating from the center to the surrounding areas.

[0015] Furthermore, the ignition unit comprises: a starting charge and a starting connector;

[0016] The starting medicine package is arranged in the gas production chamber and reacts with the gas production agent in the gas production chamber. The starting joint is arranged outside the shell and connected to the starting medicine package through a thermal line.

[0017] The fire extinguishing device for improving the dry powder spraying efficiency provided by the utility model has at least the following beneficial effects or advantages:

[0018] The utility model provides a fire extinguishing device for improving the efficiency of dry powder spraying, in which a coating layer is attached to the end surface of the slip ring located in the dry powder bin. The coating layer is attached to the slip ring, and when the fire extinguishing device is not started, the coating layer can cover the pressure relief port on the slip ring, which can effectively prevent the dry powder from leaking from the pressure relief port. In addition, the coating layer can prevent the pressure in the dry powder bin from decreasing when the fire extinguishing device is not started, so as to ensure that the dry powder fire extinguishing agent has a sufficient amount of spraying when the fire extinguishing device is sprayed. When the fire extinguishing device is started, the larger air pressure can quickly tear the coating layer, the pressure relief port is connected, and the normal pressure relief function is played, which can prevent the fire extinguishing device from exploding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the slip ring and the coating layer provided in the embodiment of the utility model;

[0020] Figure 2 A schematic diagram of a slip ring structure provided in an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the external structure of a fire extinguishing device for improving dry powder spraying efficiency provided in an embodiment of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1- coating layer, 2- slip ring, 3- housing, 4- starting joint. DETAILED DESCRIPTION

[0024] The utility model aims to solve the technical problems in the prior art that the pressure relief holes of dry powder fire extinguishing devices are prone to leakage and the existence of the pressure relief holes causes partial release of pressure and reduces the spraying amount of dry powder fire extinguishing agent, and provides a fire extinguishing device with improved dry powder spraying efficiency.

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 3 The embodiment of the utility model provides a fire extinguishing device for improving the efficiency of dry powder spraying, including: a shell 3, a slip ring 2, an ignition unit and a coating layer 1. Among them: the shell 3 is set as a closed cavity structure. In this embodiment, the shell 3 is set as a cylindrical cavity structure. The slip ring 2 is arranged inside the shell 3, and one side of the slip ring 2 is set as a gas production bin, in which a proper amount of gas production agent is placed; the other side of the slip ring 2 is set as a dry powder bin, in which a proper amount of dry powder fire extinguishing agent is placed, and a nozzle connected inside and outside is arranged on the dry powder bin. The slip ring 2 can move in the shell 3. When the fire extinguishing is started, the gas production agent in the gas production bin reacts, and the strong air pressure generated pushes the slip ring 2 to move from one side of the gas production bin to one side of the dry powder bin.

[0027] Part of the ignition unit is arranged in the gas production chamber, and interacts with the gas production agent in the gas production chamber, and the other part of the ignition unit extends to the outside of the shell 3. Specifically, the ignition unit includes: a starting medicine bag and a starting joint 4. The starting medicine bag is arranged in the gas production chamber, and interacts with the gas production agent in the gas production chamber. The starting joint 4 is arranged outside the shell 3, and the starting joint 4 is connected to the starting medicine bag through a thermal line; when a fire occurs, the starting joint 4 starts the ignition, and the starting medicine bag is ignited through the thermal line, and the gas production agent is triggered to react by the starting medicine bag. The strong air pressure generated by the gas production agent pushes the slip ring 2 from one side of the gas production chamber to the side of the dry powder chamber, and the slip ring 2 sprays the dry powder fire extinguishing agent in the dry powder chamber from the nozzle to extinguish the fire.

[0028] The end surface of the slip ring 2 in the dry powder bin is attached with a coating layer 1. When the fire extinguishing device is not activated, the coating layer 1 can cover the pressure relief port on the slip ring 2 to prevent the dry powder from leaking from the pressure relief port. The coating layer 1 is also used to prevent the pressure in the dry powder bin from decreasing when the fire extinguishing device is not activated, so as to ensure that the dry powder fire extinguishing agent has a sufficient amount of spray when the fire extinguishing device is sprayed. When the fire extinguishing device is activated, the larger air pressure can quickly tear the coating layer 1, and the pressure relief port is connected, which plays a role of normal pressure relief.

[0029] In a preferred embodiment provided by the present utility model, Figure 1 and Figure 2The coating layer 1 is fixed on the end face of the slip ring 2 by glue dispensing, and the glue dispensing positions are evenly distributed on the coating layer 1, and the glue dispensing positions cannot block the pressure relief port on the slip ring 2. The coating layer 1 can be made of PVC self-adhesive stickers, and the thickness of the coating layer 1 is 0.5mm-0.8mm, which can not only ensure that the fire extinguishing device can block the pressure relief port when it is not started, but also can meet the requirements of not tearing the coating layer 1 when the fire extinguishing device is started, so as to achieve reliable pressure relief of the fire extinguishing device.

[0030] In order to further improve the reliability of the film layer 1 being torn when the fire extinguishing device is activated, a plurality of easy-tear lines are provided on the film layer 1, and the easy-tear lines are the same as the easy-tear lines commonly used on packaging bags. The easy-tear lines are arranged in a star-shaped structure radiating from the center to the surroundings. The easy-tear lines in this structural form can ensure that when the fire extinguishing device is activated, the air pressure will open the film layer 1 from the middle to the surroundings, and have a better tearing effect.

[0031] like Figure 1-Figure 3 The fire extinguishing device for improving the dry powder spraying efficiency provided by the embodiment of the utility model has at least the following beneficial effects or advantages:

[0032] The fire extinguishing device for improving the dry powder spraying efficiency provided by the embodiment of the utility model has a coating layer 1 attached to the end surface of the slip ring 2 located in the dry powder bin. The coating layer 1 is attached to the slip ring 2. When the fire extinguishing device is not started, the coating layer 1 can cover the pressure relief port on the slip ring 2, which can effectively prevent the dry powder from leaking from the pressure relief port. In addition, the coating layer 1 can prevent the pressure in the dry powder bin from decreasing when the fire extinguishing device is not started, so as to ensure that the dry powder fire extinguishing agent has a sufficient amount of spraying when the fire extinguishing device is sprayed. When the fire extinguishing device is started, the larger air pressure can quickly tear the coating layer 1, and the pressure relief port is connected, which plays a role of normal pressure relief and can prevent the fire extinguishing device from exploding.

[0033] In the description of the present utility model, it should be noted that the terminology nouns in the various embodiments, such as words indicating directions such as "upper", "lower", "front", "back", "left", "right", etc., are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute limitations on the present utility model.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire extinguishing device for improving dry powder spraying efficiency, comprising: The housing, slip ring and ignition unit are characterized by further comprising: a coating layer; The shell is configured as a closed cavity structure; the slip ring is configured inside the shell, one side of the slip ring is configured as a gas production bin, and the other side of the slip ring is configured as a dry powder bin; the slip ring can move inside the shell, and when the fire extinguishing is started, the slip ring moves from one side of the gas production bin to one side of the dry powder bin; Part of the ignition unit is disposed in the gas production chamber to interact with the gas production agent in the gas production chamber, and another part of the ignition unit extends to the outside of the shell; The dry powder bin is provided with a nozzle communicating with the inside and outside; The coating layer is attached to the end surface of the slip ring located in the dry powder bin.

2. The fire extinguishing device for improving dry powder spraying efficiency according to claim 1, characterized in that: The coating layer is fixed on the end surface of the slip ring by glue dispensing.

3. The fire extinguishing device for improving dry powder spraying efficiency according to claim 1, characterized in that: The coating layer is a PVC self-adhesive sticker.

4. The fire extinguishing device for improving dry powder spraying efficiency according to claim 1, characterized in that: The thickness of the coating layer is 0.5mm-0.8mm.

5. The fire extinguishing device for improving dry powder spraying efficiency according to any one of claims 1 to 4, characterized in that: The coating layer is provided with a plurality of tear lines.

6. The fire extinguishing device for improving dry powder spraying efficiency according to claim 5, characterized in that: The tear line is arranged in a star-shaped structure radiating from the center to the surroundings.

7. The fire extinguishing device for improving dry powder spraying efficiency according to claim 1, characterized in that: The ignition unit comprises: a starting charge and a starting joint; The starting medicine package is arranged in the gas production chamber and reacts with the gas production agent in the gas production chamber. The starting joint is arranged outside the shell and connected to the starting medicine package through a thermal line.

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