Fabricated fireproof composite air pipe

Abstract

The utility model discloses an assembly type fireproof composite air pipe which comprises an air pipe body, a magnesium high-crystal fireproof layer, a connecting frame plate A and a connecting frame plate B. The air pipe body comprises a galvanized iron sheet shell and a heat insulation layer, a connecting sliding groove is formed in the inner frame wall of the galvanized iron sheet shell, a connecting sliding block is arranged on the outer frame wall of the heat insulation layer, and the connecting sliding block is connected with the connecting sliding groove. A connecting frame plate A and a connecting frame plate B are installed at the two end openings of the air pipe body respectively, an assembling groove is formed in the connecting frame plate B, an assembling protruding block is installed on the connecting frame plate A, an inserting hole is formed in the connecting frame plate B, a fixing hole is formed in the assembling protruding block, and a fixing rod is inserted into the inserting hole and the fixing hole. According to the utility model, the fireproof layer can be independently replaced, so that the problem of high cost caused by the fact that the whole air pipe needs to be replaced after the fireproof layer is aged or damaged due to fire is solved, a worker is prevented from assembling by using a plurality of groups of screws up and down by using a tool, the workload and the assembling time of the worker are reduced, and the assembling efficiency of the air pipe is improved.

Description

Technical Field

[0001] The utility model relates to the field of fireproof composite air ducts, and particularly relates to an assembled fireproof composite air duct. Background Technique

[0002] An air duct is a duct system used for air transportation and distribution. There are two types: composite air ducts and inorganic air ducts. Composite air ducts are represented by air ducts and can be classified according to cross-sectional shape and material. Among them, metal air ducts are made of various metal materials, and commonly used ones include galvanized iron sheets and stainless steel, etc.

[0003] After retrieval, the Chinese utility model patent CN216045901U discloses an assembled calcium silicate board composite fireproof air duct, which includes an air duct body with a square structure. The air duct body is composed of a galvanized iron sheet air duct, rock wool, and several fireproof boards. The rock wool is filled on the outer surface of the galvanized iron sheet air duct, and several fireproof boards cover the rock wool and surround the galvanized iron sheet air duct to form a square tubular structure. Each two adjacent fireproof boards are fixed and edged by using corner keels. The corner keels include inner corner keels and outer corner keels. The inner corner keels are installed on the inner wall of the fireproof board to fix the fireproof board, and the outer corner keels are installed on the outer wall of the fireproof board to edge the fireproof board. Connecting flanges are arranged at both the front end and the rear end of the galvanized iron sheet air duct. The connecting flanges are used for connecting two or more air duct bodies with the same structural dimensions. The connecting flange at the rear end of the first air duct body and the connecting flange at the front end of the second air duct body are fixedly connected by bolts, and a joint plate is arranged at the connection of the connecting flanges.

[0004] The technical solution in this application document still has deficiencies: the fireproof layer of the air duct is generally fixedly connected to the iron shell of the pipeline. When the fireproof layer ages or is damaged by fire, the entire air duct needs to be replaced, and the fireproof layer cannot be replaced separately, resulting in a high cost. When assembling multiple groups of air ducts, workers need to use tools to screw multiple groups of screws up and down, which increases the workload of the workers and the assembly time is long, affecting the assembly efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide an assembled fireproof composite air duct to solve the problems put forward in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: an assembled fireproof composite air duct, comprising an air duct body, a magnesia high-crystal fireproof layer, a connecting frame plate A and a connecting frame plate B. The air duct body comprises a galvanized iron sheet outer shell and a heat insulation layer. A connecting sliding groove is formed on the inner frame wall of the galvanized iron sheet outer shell, and a connecting sliding block is arranged on the outer frame wall of the heat insulation layer. The connecting sliding block is slidably connected with the connecting sliding groove. Connecting frame plate A and connecting frame plate B are respectively installed at both ends of the air duct body. An assembly groove is formed on the connecting frame plate B, and an assembly convex block is installed on the connecting frame plate A. The assembly convex block is fitted with the assembly groove. A jack is formed on the connecting frame plate B, and a fixing hole is formed on the assembly convex block. A fixing rod is inserted into the jack and the fixing hole.

[0007] Adopting the above technical solution, the air duct body is composed of a galvanized iron sheet outer shell and a heat insulation layer. Through the connecting sliding groove formed on the inner frame wall of the galvanized iron sheet outer shell, in cooperation with the connecting sliding block arranged on the outer frame wall of the heat insulation layer, since the connecting sliding block is slidably connected with the connecting sliding groove, the heat insulation layer and the galvanized iron sheet outer shell are in a sliding combination. When the heat insulation layer and the magnesia high-crystal fireproof layer arranged on its inner wall need to be replaced, the heat insulation layer is slid out from the galvanized iron sheet outer shell from one end of the air duct body for replacement. By doing so, the fireproof layer can be replaced separately, avoiding the problem of high cost of replacing the entire air duct when the fireproof layer ages or is damaged by fire. By installing connecting frame plate A and connecting frame plate B at both ends of the air duct body respectively, making the assembly groove formed on the connecting frame plate B fit with the assembly convex block installed on the connecting frame plate A, aligning the jack formed on the connecting frame plate B vertically with the fixing hole formed on the assembly convex block, and then inserting the fixing rod into the jack and the fixing hole, the assembly of the air ducts is completed, avoiding the need for workers to use tools to assemble multiple groups of screws up and down, reducing the workload and assembly time of the workers, and improving the assembly efficiency of the air ducts.

[0008] Preferably, a docking convex block is installed on the connecting frame plate A, and a docking groove is formed on the connecting frame plate B. The docking convex block is fitted with the docking groove.

[0009] Adopting the above technical solution, through the docking convex block installed on the connecting frame plate A, in cooperation with the docking groove formed on the connecting frame plate B, since the docking convex block is fitted with the docking groove, it is convenient for the docking during the assembly of the air ducts, reducing the occurrence of misalignment during docking.

[0010] Preferably, a sealing strip A and a sealing strip B are installed on the connecting frame plate A. The sealing strip B is arranged on the outer side of the circle of the sealing strip A.

[0011] With the above technical solution, through the sealing strips A and B installed on the connecting frame plate A, the sealing strip A is arranged in a circle, and the sealing strip B is arranged outside the circle of the sealing strip A. When the connecting frame plate A is attached to the connecting frame plate B, the sealing strips A and B are tightly pressed against the connecting frame plate B, improving the sealing performance of the assembled joint of the air duct and avoiding air leakage at the assembled joint of the air duct.

[0012] Preferably, a limiting ring is installed at one end of the fixing rod, and the diameter of the limiting ring is larger than the diameter of the jack.

[0013] With the above technical solution, through the limiting ring installed at one end of the fixing rod, since the diameter of the limiting ring is larger than the diameter of the jack, the fixing rod is prevented from sliding down in the jack.

[0014] Preferably, the jack and the fixing hole have the same diameter, and the jack and the fixing hole are aligned in the vertical direction.

[0015] With the above technical solution, since the jack and the fixing hole have the same diameter and the jack and the fixing hole are aligned in the vertical direction, when the fixing rod is inserted downward, it can be continuously inserted into the jack and the fixing hole.

[0016] Preferably, a magnesium-based high-crystalline fireproof layer is provided on the inner frame wall of the heat insulation layer.

[0017] With the above technical solution, through the magnesium-based high-crystalline fireproof layer provided on the inner frame wall of the heat insulation layer, the fireproof and heat insulation performance of the air duct is ensured.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] 1. By being able to replace the fireproof layer separately, it avoids the problem of high cost of replacing the entire air duct when the fireproof layer ages or is damaged by fire.

[0020] 2. It avoids the need for workers to use tools to assemble multiple sets of screws up and down, reducing the workload and assembly time of the workers and improving the assembly efficiency of the air duct.

[0021] 3. It facilitates the docking during the assembly of air ducts, reduces the occurrence of misalignment during docking, improves the sealing performance of the assembled joint of the air duct, and avoids air leakage at the assembled joint of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0023] Figure 2 is a sectional structural diagram of the present utility model;

[0024] Figure 3 is a side structural diagram of the present utility model;

[0025] Figure 4 Schematic diagram of the partial structure in the assembled state of the present utility model.

[0026] In the figure: 1, air duct body; 2, galvanized iron sheet shell; 3, connecting chute; 4, connecting slider; 5, heat insulation layer; 6, magnesia high-crystalline fireproof layer; 7, connecting frame plate A; 8, sealing strip A; 9, sealing strip B; 10, assembling bump; 11, docking bump; 12, connecting frame plate B; 13, docking groove; 14, assembling groove; 15, limiting ring; 16, fixing rod; 17, jack; 18, fixing hole. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0028] Please refer to Figures 1-4, an embodiment provided by the present utility model: an assembled fireproof composite air duct, which includes an air duct body 1, a magnesia high-crystal fireproof layer 6, a connecting frame plate A 7, and a connecting frame plate B 12. The air duct body 1 includes a galvanized iron sheet outer shell 2 and a heat insulation layer 5. A connecting sliding groove 3 is opened on the inner frame wall of the galvanized iron sheet outer shell 2. A connecting sliding block 4 is arranged on the outer frame wall of the heat insulation layer 5. The connecting sliding block 4 is slidably connected with the connecting sliding groove 3. Connecting frame plate A 7 and connecting frame plate B 12 are respectively installed at both ends of the air duct body 1. An assembly groove 14 is opened on the connecting frame plate B 12. An assembly convex block 10 is installed on the connecting frame plate A 7. The assembly convex block 10 fits with the assembly groove 14. A jack 17 is opened on the connecting frame plate B 12. A fixing hole 18 is opened on the assembly convex block 10. A fixing rod 16 is inserted into the jack 17 and the fixing hole 18; the air duct body 1 is composed of a galvanized iron sheet outer shell 2 and a heat insulation layer 5. Through the connecting sliding groove 3 opened on the inner frame wall of the galvanized iron sheet outer shell 2, in cooperation with the connecting sliding block 4 arranged on the outer frame wall of the heat insulation layer 5, since the connecting sliding block 4 is slidably connected with the connecting sliding groove 3, the heat insulation layer 5 and the galvanized iron sheet outer shell 2 are in a sliding combination. When the heat insulation layer 5 and the magnesia high-crystal fireproof layer 6 arranged on its inner wall need to be replaced, the heat insulation layer 5 is slid out from the galvanized iron sheet outer shell 2 from one end of the air duct body 1 for replacement. By being able to replace the fireproof layer separately, it avoids the problem of high cost of replacing the entire air duct when the fireproof layer ages or is damaged by fire. A magnesia high-crystal fireproof layer 6 is arranged on the inner frame wall of the heat insulation layer 5. Through the magnesia high-crystal fireproof layer 6 arranged on the inner frame wall of the heat insulation layer 5, the fireproof and heat insulation performance of the air duct is ensured. By respectively installing connecting frame plate A 7 and connecting frame plate B 12 at both ends of the air duct body 1, making the assembly groove 14 opened on the connecting frame plate B 12 fit with the assembly convex block 10 installed on the connecting frame plate A 7, aligning the jack 17 opened on the connecting frame plate B 12 vertically with the fixing hole 18 opened on the assembly convex block 10, and then inserting the fixing rod 16 into the jack 17 and the fixing hole 18, the assembly of the air ducts is completed, avoiding the need for the staff to use tools to assemble multiple groups of screws up and down, reducing the workload and assembly time of the staff, and improving the assembly efficiency of the air ducts.

[0029] A docking convex block 11 is installed on the connecting frame plate A 7. A docking groove 13 is opened on the connecting frame plate B 12. The docking convex block 11 fits with the docking groove 13. Through the docking convex block 11 installed on the connecting frame plate A 7, in cooperation with the docking groove 13 opened on the connecting frame plate B 12, since the docking convex block 11 fits with the docking groove 13, it is convenient for the docking during the assembly of the air ducts, reducing the occurrence of misalignment during docking.

[0030] A sealing strip A8 and a sealing strip B9 are installed on the connecting frame plate A7. The sealing strip B9 is arranged outside the circle of the sealing strip A8. Through the sealing strip A8 and the sealing strip B9 installed on the connecting frame plate A7, the sealing strip A8 is arranged in a circle, and the sealing strip B9 is arranged outside the circle of the sealing strip A8. When the connecting frame plate A7 is attached to the connecting frame plate B12, the sealing strip A8 and the sealing strip B9 are tightly pressed against the connecting frame plate B12, improving the sealing performance of the assembled connection of the air duct and avoiding air leakage at the assembled connection of the air duct.

[0031] A limit ring 15 is installed at one end of the fixed rod 16. The diameter of the limit ring 15 is larger than the diameter of the jack 17. Through the limit ring 15 installed at one end of the fixed rod 16, since the diameter of the limit ring 15 is larger than the diameter of the jack 17, the fixed rod 16 is prevented from sliding down in the jack 17; the jack 17 and the fixing hole 18 have the same diameter, and the jack 17 and the fixing hole 18 are aligned in the vertical direction. Through the same diameter of the jack 17 and the fixing hole 18, and the vertical alignment of the jack 17 and the fixing hole 18, when the fixed rod 16 is inserted downward, it can be inserted into the jack 17 and the fixing hole 18 continuously.

[0032] Working principle: The air duct body 1 is composed of a galvanized iron sheet outer shell 2 and a heat insulation layer 5. Through the connecting sliding grooves 3 opened on the inner frame wall of the galvanized iron sheet outer shell 2, and in cooperation with the connecting sliding blocks 4 arranged on the outer frame wall of the heat insulation layer 5, since the connecting sliding blocks 4 are slidably connected to the connecting sliding grooves 3, the heat insulation layer 5 and the galvanized iron sheet outer shell 2 are in a sliding combination. When the heat insulation layer 5 and the magnesium-based high-crystalline fireproof layer 6 arranged on its inner wall need to be replaced, the heat insulation layer 5 is slid out from the galvanized iron sheet outer shell 2 for replacement from one end of the air duct body 1. By doing so, the fireproof layer can be replaced separately, avoiding the problem of high cost of replacing the entire air duct when the fireproof layer ages or is damaged by fire. By respectively installing a connecting frame plate A 7 and a connecting frame plate B 12 at both ports of the air duct body 1, the assembling groove 14 opened on the connecting frame plate B 12 is fitted with the assembling convex block 10 installed on the connecting frame plate A 7, so that the insertion hole 17 opened on the connecting frame plate B 12 is vertically aligned with the fixing hole 18 opened on the assembling convex block 10. Then, the fixing rod 16 is inserted into the insertion hole 17 and the fixing hole 18 to complete the assembly between the air ducts, avoiding the need for the staff to use tools to assemble multiple sets of screws up and down, reducing the workload and assembly time of the staff, and improving the assembly efficiency of the air ducts. Through the butt joint convex block 11 installed on the connecting frame plate A 7, in cooperation with the butt joint groove 13 opened on the connecting frame plate B 12, by the butt joint convex block 11 being fitted with the butt joint groove 13, it is convenient for the butt joint during the assembly of the air ducts, reducing the occurrence of misalignment during the butt joint. Through the sealing strip A 8 and the sealing strip B 9 installed on the connecting frame plate A 7, the sealing strip A 8 is arranged in a circle, and the sealing strip B 9 is arranged outside the circle of the sealing strip A 8. When the connecting frame plate A 7 is attached to the connecting frame plate B 12, the sealing strip A 8 and the sealing strip B 9 are tightly abutted against the connecting frame plate B 12, improving the sealing performance of the connection part of the air duct assembly and avoiding air leakage at the connection part of the air duct assembly.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An assembled fireproof composite air duct, comprising an air duct body (1), a magnesia high-crystalline fireproof layer (6), a connecting frame plate A (7) and a connecting frame plate B (12), characterized in that: The air duct body (1) includes a galvanized iron sheet outer shell (2) and a heat insulation layer (5). A connecting chute (3) is provided on the inner frame wall of the galvanized iron sheet outer shell (2), and a connecting slider (4) is provided on the outer frame wall of the heat insulation layer (5). The connecting slider (4) is slidably connected to the connecting chute (3). Connecting frame plates A (7) and B (12) are respectively installed at both ports of the air duct body (1). An assembly groove (14) is provided on the connecting frame plate B (12), and an assembly convex block (10) is installed on the connecting frame plate A (7). The assembly convex block (10) fits into the assembly groove (14). A jack (17) is provided on the connecting frame plate B (12), and a fixing hole (18) is provided on the assembly convex block (10). A fixing rod (16) is inserted into the jack (17) and the fixing hole (18).

2. The prefabricated fireproof composite air duct according to claim 1, wherein: A docking convex block (11) is installed on the connecting frame plate A (7), and a docking groove (13) is provided on the connecting frame plate B (12). The docking convex block (11) fits into the docking groove (13).

3. The prefabricated fireproof composite air duct according to claim 1, characterized in that: A sealing strip A (8) and a sealing strip B (9) are installed on the connecting frame plate A (7), and the sealing strip B (9) is arranged on the outer side of the circle of the sealing strip A (8).

4. The prefabricated fireproof composite air duct according to claim 1, characterized in that: A limit ring (15) is installed at one end of the fixing rod (16), and the diameter of the limit ring (15) is larger than the diameter of the jack (17).

5. The prefabricated fireproof composite air duct according to claim 1, characterized in that: The jack (17) and the fixing hole (18) have the same diameter, and the jack (17) and the fixing hole (18) are aligned in the vertical direction.

6. The prefabricated fireproof composite air duct according to claim 1, characterized in that: A magnesia high-crystalline fireproof layer (6) is provided on the inner frame wall of the heat insulation layer (5).

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