A marine flame-retardant ventilation duct

Abstract

This utility model relates to the field of ventilation duct technology, specifically a marine flame-retardant ventilation duct. The utility model includes a ventilation duct body, with plastic connectors fixedly connected to both ends. Four first sliding grooves are respectively formed on the outer surface of the outer wall of each of the two plastic connectors. A heat insulation layer is adhered to the inner wall surface of the ventilation duct body. A flame-retardant component for flame retardant protection is provided on the outer wall of the ventilation duct body. This utility model forms a double protection through a first flame-retardant layer and a second flame-retardant layer, reducing the risk of combustion of the ventilation duct in a fire. The evenly distributed reinforcing ribs inside the first and second flame-retardant layers disperse external forces, preventing localized stress concentration that could lead to deformation or damage to the flame-retardant layers. This allows the duct to better withstand external forces, improving the overall strength of the flame-retardant layers and preventing damage from factors such as scraping and collisions during shipboard movements and complex operating environments.

Description

Technical Field

[0001] This utility model relates to the field of ventilation pipes, specifically a marine flame-retardant ventilation pipe. Background Technology

[0002] Marine flame-retardant ventilation ducts are pipes specifically designed for ship ventilation systems. They are mainly used to transport air, exhaust air, and maintain air circulation inside the ship. Due to the special environment of ships, flame-retardant performance is one of the key requirements for this type of duct. Marine flame-retardant ventilation ducts are usually used in areas such as cabins, engine rooms, and cargo holds of ships to facilitate air circulation in cargo holds and ensure that the ventilation system is not affected by fire.

[0003] In traditional marine flame-retardant ventilation ducts, the flame-retardant layer is usually placed on the outside of the ventilation duct. Although the outer flame-retardant layer is flexible, making it easy to store and carry the ventilation duct, its flexibility also makes it susceptible to damage from factors such as scratches and collisions during shipboard turbulence and complex operating environments, which in turn affects the flame-retardant performance and the overall performance of the ventilation duct. Utility Model Content

[0004] The purpose of this utility model is to provide a marine flame-retardant ventilation pipe to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A marine flame-retardant ventilation duct includes a ventilation duct body, with plastic connectors fixedly connected to both ends of the ventilation duct body. Four first sliding grooves are respectively formed on the outer wall surface of the two plastic connectors. A heat insulation layer is attached to the inner wall surface of the ventilation duct body. A flame-retardant component for flame-retardant ventilation duct body is provided on the outer wall of the ventilation duct body.

[0007] Preferably, the flame-retardant component includes a first flame-retardant layer and a second flame-retardant layer located close to each other on the outer wall of the ventilation duct body. Multiple reinforcing ribs are fixedly connected inside the first flame-retardant layer and the second flame-retardant layer. Two first fixing rods and a second fixing rod are fixedly connected at the upper and lower ends away from the center of the first flame-retardant layer and the second flame-retardant layer, respectively. Multiple rivets are threaded inside the two first fixing rods and the second fixing rod.

[0008] Preferably, a reinforcing plate is fixedly sleeved at both ends of the first flame-retardant layer and the second flame-retardant layer away from the center, and four sliding blocks are fixedly connected to the inner wall surface of the two reinforcing plates respectively, and the four sliding blocks are slidably sleeved inside the four first sliding grooves respectively.

[0009] Preferably, the inner walls of the two reinforcing discs are provided with multiple insertion holes at equal intervals, and the interior of the multiple insertion holes is respectively inserted into multiple reinforcing ribs at both ends near the first flame-retardant layer and the second flame-retardant layer.

[0010] Preferably, two fixing chucks are inserted into the outer sides of the two reinforcing discs respectively, and two slots are opened inside one side of each of the two fixing chucks, and two reinforcing discs are inserted into the inside of each slot respectively.

[0011] Preferably, the two fixed chucks and the two slots each have multiple through holes on one side, and the interior of the multiple through holes is respectively inserted into multiple reinforcing ribs at both ends of the first flame-retardant layer and the second flame-retardant layer. The inner walls of the two reinforcing chucks each have a second sliding groove, and the four second sliding grooves are respectively slidably sleeved on the outside of the four sliding blocks on the inner walls of the two reinforcing chucks.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model forms a double protection through the first flame-retardant layer and the second flame-retardant layer, reducing the risk of combustion of ventilation ducts in a fire. The reinforcing ribs evenly distributed inside the first and second flame-retardant layers disperse external forces, avoiding localized stress concentration that could cause deformation or damage to the flame-retardant layers. This allows the flame-retardant layers to better withstand external forces, improve their overall strength, and prevent damage from factors such as scratches and collisions during ship turbulence and complex operating environments.

[0014] 2. This utility model uses a variety of fixing methods such as rivets, reinforcing plates, and fixing chucks. The fixing chuck is connected to the reinforcing plate through the slot, which further fixes the position of the first flame-retardant layer and the second flame-retardant layer. The inner wall of the fixing chuck is tightly fixed to the outer side of the two plastic connectors, which increases the stability and reliability of the entire structure and ensures that the flame-retardant layer is tightly bonded to the ventilation pipe body, preventing loosening or falling off. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the disassembled flame-retardant component of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the reinforcing disc and sliding block of this utility model;

[0019] Figure 4 This is a structural schematic diagram of the fixed chuck and chuck slot of this utility model;

[0020] Figure 5 This is a structural schematic diagram of the second flame-retardant layer and the plastic connector of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the second flame-retardant layer of this utility model.

[0022] The reference numerals in the figure are as follows: 1. Ventilation duct body; 101. Plastic connector; 102. First sliding groove; 2. Flame-retardant component; 201. First flame-retardant layer; 202. Second flame-retardant layer; 203. Reinforcing rib; 204. First fixing rod; 205. Second fixing rod; 206. Rivet; 207. Reinforcing plate; 208. Insertion hole; 209. Sliding block; 210. Fixing chuck; 211. Slot; 212. Through hole; 213. Second sliding groove; 3. Heat insulation layer. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1 and Figure 2 As shown, a marine flame-retardant ventilation duct includes a ventilation duct body 1. Both ends of the ventilation duct body 1 are fixedly connected to plastic connectors 101. Four first sliding grooves 102 are respectively opened on the outer wall surface of the two plastic connectors 101. A heat insulation layer 3 is pasted and connected to the inner wall surface of the ventilation duct body 1. A flame-retardant component 2 for flame-retardant ventilation duct body 1 is provided on the outer wall of the ventilation duct body 1.

[0025] In a specific embodiment, when air flows inside the ventilation duct body 1 to achieve ventilation, the insulation layer 3 continuously plays a role in heat insulation, maintaining the stable temperature of the air inside the duct and preventing the temperature outside the duct from becoming too high due to the temperature of the air inside the duct. Common heat insulation materials for the insulation layer 3 include glass fiber, rock wool, polyurethane foam, etc., which have good heat insulation performance.

[0026] As a technical optimization solution of this utility model, such as Figures 1 to 4As shown, the flame-retardant component 2 includes a first flame-retardant layer 201 and a second flame-retardant layer 202 located close to each other on the outer wall of the ventilation duct body 1. Multiple reinforcing ribs 203 are fixedly connected inside the first flame-retardant layer 201 and the second flame-retardant layer 202. Two first fixing rods 204 and two fixing rods 205 are fixedly connected at the upper and lower ends away from the center of the first flame-retardant layer 201 and the second flame-retardant layer 202, respectively. Multiple rivets 206 are threadedly connected inside the two first fixing rods 204 and the second fixing rods 205. Reinforcing discs 207 are fixedly sleeved at both ends of the first flame-retardant layer 201 and the second flame-retardant layer 202 away from the center. Four sliding blocks 209 are fixedly connected to the inner wall surface of the two reinforcing discs 207, respectively. The four sliding blocks 209 are slidably sleeved inside the four first sliding grooves 102.

[0027] Furthermore, such as Figures 3 to 6 As shown, the inner walls of the two reinforcing plates 207 are provided with multiple insertion holes 208 at equal intervals, and the interiors of the multiple insertion holes 208 are respectively inserted into multiple reinforcing ribs 203 at both ends near the first flame-retardant layer 201 and the second flame-retardant layer 202. The outer sides of the two reinforcing plates 207 are respectively inserted with two fixing chucks 210. The interiors of the two fixing chucks 210 are respectively provided with two slots 211, and the interiors of the two slots 211 are respectively inserted with two reinforcing plates 207. The interiors of the two fixing chucks 210 and the two slots 211 are respectively provided with multiple through holes 212, and the interiors of the multiple through holes 212 are respectively inserted into multiple reinforcing ribs 203 at both ends of the first flame-retardant layer 201 and the second flame-retardant layer 202. The inner walls of the two reinforcing plates 207 are each provided with a second sliding groove 213, and the four second sliding grooves 213 are respectively slidably sleeved on the outer sides of the four sliding blocks 209 on the inner walls of the two reinforcing plates 207.

[0028] In a specific embodiment, the first flame-retardant layer 201 and the second flame-retardant layer 202 play the main flame-retardant role. They can prevent the spread of flames and reduce the risk of combustion of the ventilation duct body 1 in a fire. The structural strength of the first flame-retardant layer 201 and the second flame-retardant layer 202 is enhanced by the reinforcing ribs 203, which can better withstand external forces and prevent deformation or damage during use. Multiple reinforcing ribs 203 are evenly distributed inside the flame-retardant layer, which evenly distributes the force and improves the overall strength of the flame-retardant layer. This avoids damage caused by factors such as scratches and collisions in the complex operating environment of a ship, thereby affecting the flame-retardant performance and the overall use effect of the ventilation duct. Then, the first flame-retardant layer 201 and the second flame-retardant layer 202 are fixedly connected by the first fixing rod 204 and the second fixing rod 205 and the rivet 206, and the outside of the ventilation duct is wrapped with the first flame-retardant layer 202. Inside the first and second flame-retardant layers 201 and 202, the reinforcing plates 207 engage with the first sliding groove 102 on the ventilation pipe body 1 via the sliding block 209, allowing the insertion holes 208 of the two reinforcing plates 207 to be inserted into multiple reinforcing ribs 203 for easy assembly and disassembly. The insertion and engagement of the insertion holes 208 with the reinforcing ribs 203, and the connection of the fixing chucks 210 with the reinforcing plates 207 via the slots 211, further fix the positions of the first and second flame-retardant layers 201 and 202. Furthermore, the two fixing chucks 210 are inserted into the multiple reinforcing ribs 203 via the through holes 212, and the two reinforcing plates 207 are locked in place by the slots 211 on the inner walls of the two fixing chucks 210. Consequently, the inner walls of the two fixing chucks 210 are tightly fixed to the outer sides of the two plastic connectors 101, increasing the stability and reliability of the entire structure. The first flame-retardant layer 201 and the second flame-retardant layer 202 are typically made of inorganic fiber materials such as ceramic fiber and glass fiber, or polymer materials with added flame retardants, such as flame-retardant polypropylene and flame-retardant polyvinyl chloride. These materials have good flame-retardant properties.

[0029] In use, the first flame-retardant layer 201 and the second flame-retardant layer 202 play the main flame-retardant role, preventing the spread of flames and reducing the risk of combustion of the ventilation duct body 1 in a fire. The reinforcing ribs 203 enhance the structural strength of the first and second flame-retardant layers 201 and 202, enabling them to better withstand external forces and preventing deformation or damage during use. Multiple reinforcing ribs 203 are evenly distributed within the flame-retardant layers, distributing forces evenly and improving the overall strength of the flame-retardant layers. This prevents damage from scratches and collisions in the complex operating environment of a ship, thus affecting the flame-retardant performance and the overall performance of the ventilation duct. The first and second flame-retardant layers 201 and 202 are then fixedly connected by rivets 206 using the first fixing rod 204 and the second fixing rod 205, securing the outer side of the ventilation duct. Encased inside the first flame-retardant layer 201 and the second flame-retardant layer 202, the reinforcing plate 207 engages with the first sliding groove 102 on the ventilation pipe body 1 via the sliding block 209, allowing the insertion holes 208 of the two reinforcing plates 207 to be inserted into multiple reinforcing ribs 203 for easy assembly and disassembly. The insertion holes 208 and reinforcing ribs 203 are engaged, and the fixing chuck 210 is connected to the reinforcing plate 207 via the slot 211, further fixing the position of the first flame-retardant layer 201 and the second flame-retardant layer 202. The two fixing chucks 210 are further inserted into the multiple reinforcing ribs 203 via the through holes 212, and the slots 211 on the inner walls of the two fixing chucks 210 engage and fix the two reinforcing plates 207, thereby tightly fixing the inner walls of the two fixing chucks 210 to the outside of the two plastic connectors 101.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A fire-retardant ventilation duct for ships, comprising a ventilation duct body (1), characterized in that, Plastic connectors (101) are fixedly connected to both ends of the ventilation pipe body (1). Four first sliding grooves (102) are respectively opened on the outer wall surface of the two plastic connectors (101). A heat insulation layer (3) is attached to the inner wall surface of the ventilation pipe body (1). A flame-retardant component (2) for flame-retardant ventilation pipe body (1) is provided on the outer wall of the ventilation pipe body (1).

2. A fire-retardant air duct for marine use according to claim 1, characterised in that The flame-retardant component (2) includes a first flame-retardant layer (201) and a second flame-retardant layer (202) located close to each other on the outer wall of the ventilation duct body (1). The interior of the first flame-retardant layer (201) and the second flame-retardant layer (202) is fixedly connected with a plurality of reinforcing ribs (203). At the upper and lower ends away from the center of the first flame-retardant layer (201) and the second flame-retardant layer (202), two first fixing rods (204) and a second fixing rod (205) are fixedly connected respectively. The interior of the two first fixing rods (204) and the second fixing rod (205) is threaded with a plurality of rivets (206).

3. A fire retardant air duct for marine use according to claim 2, characterised in that The first flame-retardant layer (201) and the second flame-retardant layer (202) are both fixedly sleeved with reinforcing discs (207) at their ends away from the center. Four sliding blocks (209) are fixedly connected to the inner wall surfaces of the two reinforcing discs (207) respectively. The four sliding blocks (209) are respectively slidably sleeved inside the four first sliding grooves (102).

4. A fire retardant air duct for marine use according to claim 3, characterised in that The inner walls of the two reinforcing plates (207) are provided with multiple insertion holes (208) at equal intervals, and the interior of the multiple insertion holes (208) is respectively inserted into multiple reinforcing ribs (203) at both ends near the first flame retardant layer (201) and the second flame retardant layer (202).

5. A fire retardant air duct for marine use according to claim 4, characterised in that Two fixing chucks (210) are respectively inserted into the outer side of the two reinforcing discs (207). Two slots (211) are respectively opened inside one side of the two fixing chucks (210), and two reinforcing discs (207) are respectively inserted into the inside of the two slots (211).

6. A fire retardant air duct for marine use according to claim 5, characterised in that The two fixed chucks (210) and the two slots (211) have multiple through holes (212) on one side. The interior of the multiple through holes (212) is respectively inserted into multiple reinforcing ribs (203) at both ends of the first flame-retardant layer (201) and the second flame-retardant layer (202). The inner walls of the two reinforcing discs (207) are provided with second sliding grooves (213), and the four second sliding grooves (213) are respectively slidably sleeved on the outside of the four sliding blocks (209) on the inner wall of the two reinforcing discs (207).

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