Fire-fighting gas fire extinguishing tail end noise reduction nozzle

Abstract

The utility model provides a fire-fighting gas fire extinguishing tail end noise reduction nozzle, and belongs to the technical field of nozzles. The problem that in the prior art, noise is too large when a fire-fighting nozzle is used is solved. The spray nozzle comprises a spray nozzle body, an inner cover body fixedly sleeves the spray nozzle body, an outer cover body fixedly sleeves the inner cover body, a plurality of outer spray holes are formed in the bottom and the side face, close to the bottom, of the outer cover body, an outer containing cavity is formed between the inner cover body and the outer cover body, and a fiber column net is fixedly installed in the outer containing cavity. The fiber column net is located on the upper sides of the outer spraying holes, an inner containing cavity is formed between the inner cover body and the nozzle body, a powder metallurgy column is fixed in the inner containing cavity, and a plurality of inner spraying holes are formed in the bottom of the nozzle body and the side face close to the bottom. The utility model has the advantage of lower noise in use.

Description

Technical Field

[0001] The utility model belongs to the technical field of nozzles and relates to a noise reduction nozzle for the end of a fire fighting gas extinguishing system. Background Technique

[0002] The fire fighting gas nozzle releases gas during a fire outbreak to reduce the pressure inside the extinguishing system, so that the fire extinguishing agent can be quickly and evenly distributed to the fire-affected area. This kind of sprinkler is suitable for spaces of various scales, such as computer rooms, electrical equipment rooms, libraries, etc.

[0003] Chinese Patent with the publication number CN217091871U discloses a flow regulating device for a fire fighting gas nozzle, including a jet head, and further including a regulating component arranged on one side of the jet head; the regulating component includes an air inlet pipe, a partition piece, a regulating valve, a connecting rod and an adjusting ring. One side of the jet head is fixedly connected to the air inlet pipe with a partition piece fixedly arranged on the inner surface. The surface of the partition piece is slidably connected to the surface of the regulating valve. The surface of the regulating valve is rotatably connected to the inner surface of the air inlet pipe. A connecting rod fixedly connected to the inner surface of the adjusting ring is fixedly connected to the surface of the regulating valve on the side away from the partition piece. The connecting rod is slidably connected to the surface of the air inlet pipe. The inner surface of the adjusting ring is rotatably connected to the surface of the air inlet pipe.

[0004] The flow regulating device for a fire fighting gas nozzle disclosed in this patent can control the fire fighting gas in the nozzle, but due to the lack of noise-reducing components, the noise is relatively large during use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a noise reduction nozzle for the end of a fire fighting gas extinguishing system aiming at the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions: A noise reduction nozzle for the end of a fire fighting gas extinguishing system includes a nozzle body. An inner housing is fixedly sleeved outside the nozzle body. An outer housing is fixedly sleeved outside the inner housing. A plurality of outer spray holes are formed in the bottom and the side surface near the bottom of the outer housing. An outer placement cavity is formed between the inner housing and the outer housing. A fiber column net is fixedly installed in the outer placement cavity. The fiber column net is located above the outer spray holes. An inner placement cavity is formed between the inner housing and the nozzle body. A powder metallurgy column body is fixed in the inner placement cavity. A plurality of inner spray holes are formed in the bottom and the side surface near the bottom of the nozzle body.

[0007] In the above-mentioned noise reduction nozzle for the end of a fire fighting gas extinguishing system, a sintered filter net is fixedly installed inside the nozzle body, and the sintered filter net is located near the port of the nozzle body.

[0008] In the above-mentioned noise reduction nozzle at the end of fire-fighting gas extinguishing, a connecting block is fixedly installed inside the upper end of the outer cover body. The connecting block is located above the inner cover body and the powder metallurgy column body, and the other side of the connecting block is connected to the outer side of the upper end of the nozzle body.

[0009] In the above-mentioned noise reduction nozzle at the end of fire-fighting gas extinguishing, an air inlet joint is fixedly installed at the upper end of the nozzle body. A connecting convex body is integrally formed on the outer periphery of the air inlet joint. The lower end surface of the connecting convex body is in contact connection with the upper end surface of the connecting block, and a sealing ring is fixedly arranged at the connection part between the connecting convex body and the connecting block.

[0010] Compared with the prior art, the noise reduction nozzle at the end of fire-fighting gas extinguishing provided by the present utility model has the following beneficial effects: 1. Through the structural settings of the nozzle body, the inner cover body and the outer cover body, and by arranging a powder metallurgy column body between the nozzle body and the inner cover body, the flow rate of the high-pressure gas is effectively reduced, and the noise is reduced; 2. By arranging a sintered filter screen inside the nozzle body, the flow rate of the high-pressure gas entering the nozzle from the air inlet joint is reduced; 3. By arranging a fiber column net between the inner cover body and the outer cover body, the flow rate of the gas is further reduced, effectively reducing the noise during the use of the present utility model. Description of the Drawings

[0011] Figure 1 is the overall structural schematic diagram of the present utility model;

[0012] Figure 2 is the sectional structural schematic diagram of the present utility model.

[0013] In the figure: 1. Nozzle body; 11. Inner spray hole; 2. Inner cover body; 21. Inner placement cavity; 3. Outer cover body; 31. Outer spray hole; 32. Outer placement cavity; 4. Fiber column net; 5. Powder metallurgy column body; 6. Sintered filter net; 7. Connecting block; 71. Sealing ring; 8. Air inlet joint; 81. Connecting convex body. Detailed Embodiments

[0014] The following are specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0015] Such as Figures 1 to 2As shown in the figure, this embodiment includes a nozzle body 1, an inner housing 2, and an outer housing 3. The outer housing 3 and the inner housing 2 are successively sleeved and fixed on the outside of the nozzle body 1. Specifically, the outer housing 3 is sleeved on the outside of the inner housing 2, and the inner housing 2 is sleeved on the outside of the nozzle body 1. The nozzle body 1, the inner housing 2, and the outer housing 3 are similar in shape, with the side end being cylindrical and the bottom part being hemispherical. A number of outer spray holes 31 are provided on the bottom part and the side surface near the bottom of the outer housing 3. An outer placement cavity 32 is formed between the inner housing 2 and the outer housing 3. A fiber column net 4 is fixedly installed in the outer placement cavity 32. The fiber column net 4 is located above the outer spray holes 31 and does not contact the outer spray holes 31. An inner placement cavity 21 is formed between the inner housing 2 and the nozzle body 1. A powder metallurgy column 5 is fixed in the inner placement cavity 21. A number of inner spray holes 11 are provided on the bottom part and the side surface near the bottom of the nozzle body 1.

[0016] As Figures 1 to 2 shown, the air inlet joint 8 is in a shape of passing through at both ends and the air inlet joint 8 is fixedly installed at the upper end of the nozzle body 1. A connecting block 7 is fixedly installed on the inner side of the upper end of the outer housing 3. The connecting block 7 is in a circular ring shape and the connecting block 7 is fixed on the upper sides of the inner housing 2 and the powder metallurgy column 5. The inner side surface of the connecting block 7 is connected to the outer side of the upper end of the nozzle body 1. A connecting convex body 81 is integrally formed on the outer periphery of the air inlet joint 8. The lower end surface of the connecting convex body 81 is in contact connection with the upper end surface of the connecting block 7. A sealing ring 71 is fixedly arranged at the connection part between the connecting convex body 81 and the connecting block 7. The connecting block 7 seals and connects the air inlet joint 8 with the nozzle body 1, the inner housing 2, and the outer housing 3.

[0017] Further details are as follows. As Figure 2 shown, a sintered filter net 6 is fixedly installed inside the nozzle body 1. The sintered filter net 6 is located near the upper port of the nozzle body 1.

[0018] The working principle of the present utility model is as follows: The air inlet joint 8 is connected to a high-pressure inlet pipe. High-pressure gas enters the nozzle body 1 from the air inlet joint 8. The sintered filter net 6 conducts the first flow reduction of the high-pressure gas. After the high-pressure gas passes through the sintered filter net 6 and enters the nozzle body 1, it enters the inner placement cavity 21 through the inner spray holes 11 on the nozzle body 1 and the powder metallurgy column 5 reduces the noise of the high-pressure gas. After the noise reduction, the high-pressure gas passes through the outer placement cavity 32, and the fiber column net 4 in the outer placement cavity 32 conducts the last flow rate reduction of the high-pressure gas. Finally, the high-pressure gas is ejected from the outer spray holes 31 of the present utility model.

[0019] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0020] Although various terms are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present utility model; any interpretation of them as an additional limitation is contrary to the spirit of the present utility model.

Claims

1. A noise reduction nozzle at the end of a fire-fighting gas extinguishing system, comprising a nozzle body (1), characterized in that: An inner housing body (2) is fixedly sleeved outside the nozzle body (1), an outer housing body (3) is fixedly sleeved outside the inner housing body (2), a plurality of outer spray holes (31) are formed in the bottom and the side surface near the bottom of the outer housing body (3), an outer placement cavity (32) is formed between the inner housing body (2) and the outer housing body (3), a fiber columnar net (4) is fixedly installed in the outer placement cavity (32), the fiber columnar net (4) is located above the outer spray holes (31), an inner placement cavity (21) is formed between the inner housing body (2) and the nozzle body (1), a powder metallurgy column body (5) is fixed in the inner placement cavity (21), and a plurality of inner spray holes (11) are formed in the bottom and the side surface near the bottom of the nozzle body (1).

2. The noise reduction nozzle at the end of a fire-fighting gas extinguishing device according to claim 1, characterized in that: A sintered filter screen (6) is fixedly installed inside the nozzle body (1), and the sintered filter screen (6) is located near the port of the nozzle body (1).

3. The noise reduction nozzle at the end of a fire-fighting gas extinguishing device according to claim 1, wherein: A connecting block (7) is fixedly installed on the inner side of the upper end of the outer housing body (3), the connecting block (7) is located above the inner housing body (2) and the powder metallurgy column body (5), and the other side of the connecting block (7) is connected to the outer side of the upper end of the nozzle body (1).

4. A fire-fighting gas extinguishing end noise reduction nozzle according to claim 1, characterized in that: An air inlet joint (8) is fixedly installed at the upper end of the nozzle body (1), a connecting convex body (81) is integrally formed on the outer periphery of the air inlet joint (8), the lower end surface of the connecting convex body (81) is in contact connection with the upper end surface of the connecting block (7), and a sealing ring (71) is fixedly arranged at the connection part of the connecting convex body (81) and the connecting block (7).

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