Telescopic flame-retardant tunnel air duct

Abstract

The utility model discloses a telescopic flame-retardant tunnel air duct, which relates to the technical field of tunnel air ducts and comprises a high-strength polyester glass fiber woven coating base cloth, a steel ring is arranged in the high-strength polyester glass fiber woven coating base cloth, a fixing plate is arranged on one side of the high-strength polyester glass fiber woven coating base cloth, and the fixing plate is arranged on the other side of the high-strength polyester glass fiber woven coating base cloth. The high-strength polyester glass fiber woven coating base cloth is provided with a positioning mechanism for splicing positioning, the positioning mechanism is arranged on a fixing plate, the fixing plate is provided with a moving mechanism used for freely adjusting the position distance, the moving mechanism is provided with a fixing mechanism used for inserting and fixing, and the fixing mechanism is provided with a clamping mechanism used for clamping and fixing the high-strength polyester glass fiber woven coating base cloth. According to the flame-retardant air duct, splicing and fixing between the air ducts are facilitated, no auxiliary tool is needed for operation, the fixing effect is good, air conveying cannot be affected, operation is easy, practicability is high, the flame-retardant effect is achieved, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel ventilation duct technology, specifically to a retractable flame-retardant tunnel ventilation duct. Background Technology

[0002] A ventilation duct is a primary air guiding device used for local ventilation. Depending on the manufacturing materials, there are flexible ventilation ducts made of canvas, artificial leather, plastic, and rubber, as well as metal ventilation ducts made of sheet metal and aluminum plates. Flexible ventilation ducts are lightweight and easy to connect and suspend, but they have high ventilation resistance. Metal ventilation ducts have low ventilation resistance, but they occupy a larger cross-sectional area in the shaft or tunnel.

[0003] In existing technologies, tunnel ventilation ducts and fans are used in mining operations to ensure air circulation within the tunnel. Most tunnel ventilation ducts are made of high-strength polyester fiberglass woven coated base fabric combined with steel rings, which are stretchable and flexible, enhancing their flexibility. However, when splicing and extending the length of tunnel ventilation ducts, metal buckles are usually added at the joints and fixed with steel wire ropes. The winding of the steel wire ropes requires the assistance of pliers, and there may be gaps in the splicing, which will affect the air delivery of the fan.

[0004] To address this, a retractable, flame-retardant tunnel ventilation duct is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a retractable flame-retardant tunnel ventilation duct in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A retractable flame-retardant tunnel ventilation duct includes a high-strength polyester fiberglass woven coated base fabric. A steel ring is disposed inside the high-strength polyester fiberglass woven coated base fabric. A fixing plate is disposed on one side of the high-strength polyester fiberglass woven coated base fabric. A splicing and positioning mechanism is disposed on the high-strength polyester fiberglass woven coated base fabric and is disposed on the fixing plate. A moving mechanism for freely adjusting the position distance is disposed on the fixing plate. A fixing mechanism for insertion and fixing is disposed on the moving mechanism. A flame-retardant coating is disposed on the high-strength polyester fiberglass woven coated base fabric.

[0008] Furthermore, the positioning mechanism includes a mounting plate, which is mounted on the right side of the high-strength polyester glass fiber woven coated base fabric. A positioning ring is mounted on the surface of the mounting plate, and a fixing ring is mounted on the surface of the fixing plate. The inner diameter of the positioning ring is the same as the outer diameter of the fixing ring. A connecting plate is mounted on the surface of the fixing plate, and the distance between the fixing ring and the connecting plate is adapted to the diameter of the positioning ring.

[0009] Furthermore, a sealing ring is installed on the surface of the fixing plate, and the sealing ring is located between the fixing ring and the connecting plate.

[0010] Furthermore, the moving mechanism includes two fixed shells, which are mounted on the surface of a fixed plate. Each of the two fixed shells has a shaft column installed inside it. Two moving frames are slidably mounted on the outer walls of the two shaft columns, and the moving frames are slidably mounted on the inner walls of the fixed shells.

[0011] Furthermore, the fixing mechanism includes four telescopic columns, which are mounted on two movable frames. Two plug-in plates are installed on the surface of the four telescopic columns. Two plug-in slots are formed on the surface of the columns and are adapted to the plug-in plates. T-shaped studs are rotatably installed on both plug-in plates and are threaded onto the movable frames. Torque handles are installed on the surface of both T-shaped studs.

[0012] Furthermore, the flame-retardant coating includes an organosilicon resin coating, which is disposed on the surface of a high-strength polyester glass fiber woven coating base fabric, and a silicate fire-retardant coating is disposed on the organosilicon resin coating.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention, through the setting of positioning, moving, and fixing mechanisms, combines a steel ring with a high-strength polyester fiberglass woven coated base fabric, allowing for free stretching and contraction. The steel ring serves as a support component for the high-strength polyester fiberglass woven coated base fabric. When it is necessary to extend the length of the ventilation duct through splicing, the positioning mechanism can be used to position the duct during splicing, the moving mechanism can be used to adjust the position of the fixing mechanism, and then the fixing mechanism can be used to fix it. This completes the splicing and fixing of the ventilation ducts, extending the length of the ventilation duct. Furthermore, the flame-retardant coating can quickly prevent the spread of flames when exposed to open flames or high temperatures, effectively reducing the risk of fire and buying valuable time for personnel evacuation and rescue work. This invention facilitates the splicing and fixing of ventilation ducts without the need for auxiliary tools, provides good fixing effect, does not affect air delivery, is simple to operate, highly practical, and has a flame-retardant effect, improving safety. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a side view structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the connecting plate of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the T-shaped stud of this utility model.

[0019] Reference numerals: 1. Steel ring; 2. High-strength polyester fiberglass woven coated base fabric; 3. Fixing plate; 4. Positioning mechanism; 401. Mounting plate; 402. Positioning ring; 403. Fixing ring; 404. Connecting plate; 5. Moving mechanism; 501. Fixing shell; 502. Shaft column; 503. Moving frame; 6. Fixing mechanism; 601. Telescopic column; 602. Insertion plate; 603. T-screw; 604. Torque handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] 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 merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figures 1 to 3As shown, a retractable flame-retardant tunnel ventilation duct includes a high-strength polyester fiberglass woven coated base fabric 2. A steel ring 1 is disposed inside the high-strength polyester fiberglass woven coated base fabric 2. A fixing plate 3 is disposed on one side of the high-strength polyester fiberglass woven coated base fabric 2. A splicing and positioning mechanism 4 is disposed on the high-strength polyester fiberglass woven coated base fabric 2, and the positioning mechanism 4 is disposed on the fixing plate 3. A moving mechanism 5 for freely adjusting the position distance is disposed on the fixing plate 3. A fixing mechanism 6 for insertion and fixing is disposed on the moving mechanism 5. A flame-retardant coating is disposed on the high-strength polyester fiberglass woven coated base fabric 2. In this embodiment, it is explained that the combination of the steel ring 1 and the high-strength polyester fiberglass woven coated base fabric 2 allows for free stretching. The expansion and contraction mechanism, with steel ring 1 made of high-strength polyester fiberglass woven and coated base fabric 2, serves as a support component, forming a tunnel ventilation duct. During use, it can be positioned via positioning mechanism 4, adjusted via moving mechanism 5, and then fixed via fixing mechanism 6. This allows for the splicing and fixing of ventilation ducts, extending their length. The flame-retardant coating effectively prevents the spread of flames when exposed to open flames or high temperatures, significantly reducing the risk of fire and buying valuable time for personnel evacuation and rescue operations. This facilitates the splicing and fixing of ventilation ducts without the need for auxiliary tools, provides excellent fixing, and does not affect air supply. It is simple to operate, highly practical, and flame-retardant, enhancing safety.

[0025] like Figures 1 to 3 As shown, the positioning mechanism 4 includes a mounting plate 401, which is mounted on the right side of the high-strength polyester glass fiber woven coated base fabric 2. A positioning ring 402 is mounted on the surface of the mounting plate 401, and a fixing ring 403 is mounted on the surface of the fixing plate 3. The inner diameter of the positioning ring 402 is the same as the outer diameter of the fixing ring 403. A connecting plate 404 is mounted on the surface of the fixing plate 3, and the distance between the fixing ring 403 and the connecting plate 404 is adapted to the diameter of the positioning ring 402. In this embodiment, by bringing the mounting plate 401 into contact with the connecting plate 404, the positioning ring 402 is fitted onto the outer wall of the fixing ring 403, and the outer wall of the positioning ring 402 is in contact with the connecting plate 404, thereby facilitating positioning and installation before splicing and fixing.

[0026] like Figure 3 As shown, a sealing ring is installed on the surface of the fixing plate 3, and the sealing ring is located between the fixing ring 403 and the connecting plate 404. In this embodiment, the sealing ring can improve the stability of the fixation and prevent gas leakage.

[0027] like Figure 1 , 3As shown in Figure 4, the moving mechanism 5 includes two fixed shells 501, which are mounted on the surface of the fixed plate 3. Each of the two fixed shells 501 has a shaft column 502 installed inside. Two movable frames 503 are slidably mounted on the outer wall of the two shaft columns 502, and the movable frames 503 are slidably mounted on the inner wall of the fixed shell 501. In this embodiment, the movable frames 503 can be pushed to automatically slide on the shaft column 502 to adjust the position distance.

[0028] like Figure 1 , 3 As shown in Figure 4, the fixing mechanism 6 includes four telescopic columns 601, which are mounted on two movable frames 503. Two plug-in plates 602 are mounted on the surface of the four telescopic columns 601. Two plug-in slots are formed on the surface of the columns 401, and the plug-in slots are adapted to the plug-in plates 602. T-shaped studs 603 are rotatably mounted on both plug-in plates 602, and the T-shaped studs 603 are threaded onto the movable frames 503. Torque handles 604 are mounted on the surface of both T-shaped studs 603. In this embodiment, by rotating the torque handles 604, the T-shaped studs 603 are rotated and moved laterally, which pushes the plug-in plates 602 to move laterally. They can be plugged into the mounting plate 401 and pushed against it. The plug-in plates 602 are plugged into the mounting plate 401, which can limit the position of the movable frame 503 and make the positioning ring 402 fit tightly with the sealing ring, thus completing the splicing and fixing.

[0029] like Figure 1-2 As shown, the flame-retardant coating includes an organosilicon resin coating, which is applied to the surface of the high-strength polyester fiberglass woven coating base fabric 2. A silicate fire-retardant coating is applied to the organosilicon resin coating. In this embodiment, the organosilicon resin coating, as a base layer, has good heat resistance, water resistance, and corrosion resistance, which can enhance the adhesion between the silicate fire-retardant coating and the high-strength polyester fiberglass woven coating base fabric 2. After the organosilicon resin coating dries, the silicate fire-retardant coating is applied to ensure the uniformity and thickness of the fire-retardant coating. The silicate fire-retardant coating plays a fire-retardant role, which can prevent the spread of fire and protect the safety of the building.

[0030] In summary, the combination of steel ring 1 and high-strength polyester fiberglass woven coated base fabric 2 allows for free stretching and contraction. Steel ring 1 serves as the supporting component for the high-strength polyester fiberglass woven coated base fabric 2, forming a tunnel ventilation duct. During use, the positioning mechanism 4 can be used for positioning during splicing, and the position of the fixing mechanism 6 can be adjusted by the moving mechanism 5. Finally, the fixing mechanism 6 can be used to fix it, thus completing the splicing and fixing between ventilation ducts, extending the length of the ventilation duct. Furthermore, the flame-retardant coating can quickly prevent the spread of flames when exposed to open flames or high temperatures, effectively reducing the risk of fire and buying valuable time for personnel evacuation and rescue work. This facilitates the splicing and fixing between ventilation ducts without the need for auxiliary tools, provides good fixing effect, does not affect air supply, is simple to operate, highly practical, and has a flame-retardant effect, improving safety. By contacting the mounting plate 401 with the connecting plate 404, the positioning ring 402 is fitted onto the outer wall of the fixing ring 403, and the outer wall of the positioning ring 402 is connected to the connecting plate 404. The connecting plate 404 contacts each other, facilitating positioning and installation before splicing and fixing. The sealing ring improves the stability of the fixing and prevents gas leakage. The movable frame 503 can slide automatically on the shaft column 502 by pushing it, adjusting the position distance. By rotating the torsion handle 604, the T-shaped stud 603 is rotated and moves laterally, pushing the plug-in plate 602 laterally, which can be plugged into the mounting plate 401 and pushed. The plug-in plate 602 is plugged into the mounting plate 401, which limits the position of the movable frame 503 and makes the positioning ring 402 fit tightly with the sealing ring, thus completing the splicing and fixing. The silicone resin coating, as the base layer, has good heat resistance, waterproof and anti-corrosion properties, which can enhance the adhesion between the silicate fireproof coating and the high-strength polyester glass fiber woven coating base cloth 2. After the silicone resin coating dries, the silicate fireproof coating is applied, which can ensure the uniformity and thickness of the fireproof coating. The silicate fireproof coating plays a fireproof role, which can prevent the spread of fire and protect the safety of the building.

[0031] 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 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A retractable flame-retardant tunnel ventilation duct, comprising a high-strength polyester glass fiber woven coated base fabric (2), characterized in that, The high-strength polyester glass fiber woven coated base fabric (2) has a steel ring (1) inside. A fixing plate (3) is provided on one side of the high-strength polyester glass fiber woven coated base fabric (2). A splicing positioning mechanism (4) is provided on the high-strength polyester glass fiber woven coated base fabric (2), and the positioning mechanism (4) is provided on the fixing plate (3). A moving mechanism (5) for freely adjusting the position distance is provided on the fixing plate (3). A fixing mechanism (6) for plugging and fixing is provided on the moving mechanism (5). A flame-retardant coating is provided on the high-strength polyester glass fiber woven coated base fabric (2).

2. The retractable flame-retardant tunnel ventilation duct according to claim 1, characterized in that, The positioning mechanism (4) includes a mounting plate (401), which is mounted on the right side of the high-strength polyester glass fiber woven coated base fabric (2). A positioning ring (402) is mounted on the surface of the mounting plate (401), and a fixing ring (403) is mounted on the surface of the fixing plate (3). The inner diameter of the positioning ring (402) is the same as the outer diameter of the fixing ring (403). A connecting plate (404) is mounted on the surface of the fixing plate (3), and the distance between the fixing ring (403) and the connecting plate (404) is adapted to the diameter of the positioning ring (402).

3. The retractable flame-retardant tunnel ventilation duct according to claim 2, characterized in that, A sealing ring is installed on the surface of the fixing plate (3), and the sealing ring is located between the fixing ring (403) and the connecting plate (404).

4. A retractable flame-retardant tunnel ventilation duct according to claim 3, characterized in that, The moving mechanism (5) includes two fixed shells (501), which are mounted on the surface of the fixed plate (3). Each of the two fixed shells (501) has a shaft column (502) installed inside. Two moving frames (503) are slidably mounted on the outer wall of the two shaft columns (502), and the moving frames (503) are slidably mounted on the inner wall of the fixed shell (501).

5. A retractable flame-retardant tunnel ventilation duct according to claim 4, characterized in that, The fixing mechanism (6) includes four telescopic columns (601), which are mounted on two movable frames (503). Two plug-in plates (602) are mounted on the surface of the four telescopic columns (601). Two plug-in slots are opened on the surface of the four columns (601), and the plug-in slots are adapted to the plug-in plates (602). T-shaped studs (603) are rotatably mounted on the two plug-in plates (602), and the T-shaped studs (603) are threaded onto the movable frames (503). Torque handles (604) are mounted on the surface of the two T-shaped studs (603).

6. A retractable flame-retardant tunnel ventilation duct according to claim 1, characterized in that, The flame-retardant coating includes an organosilicon resin coating, which is disposed on the surface of a high-strength polyester glass fiber woven coating base fabric (2), and a silicate fire-retardant coating is disposed on the organosilicon resin coating.

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