Steel-face magnesium composite air pipe

Abstract

The utility model discloses a steel face magnesium composite air pipe, which relates to the field of air pipes and comprises an air pipe body, the top of the air pipe body is provided with a fixing frame, the top end of the fixing frame is connected with a connecting block, the connecting block is internally provided with a first bevel gear and a second bevel gear, one side of the connecting block is provided with an adjusting knob, and the other side of the connecting block is provided with a second bevel gear. And one end of the adjusting knob is connected with a rotating rod, the end of the rotating rod is connected with the second bevel gear, a screw rod is installed at the top of the connecting block, the outer wall of the screw rod is sleeved with a fixing column, and the top end of the fixing column is connected with a fixing seat. The adjusting button is rotated to drive the rotating rod to rotate, so that the second bevel gear connected to the end of the rotating rod drives the first bevel gear to rotate, then the screw rod connected with the first bevel gear rotates, and the whole fixing frame moves upwards or downwards due to rotation of the screw rod; therefore, the distance between the air pipe and the wall surface can be adjusted in the air pipe mounting process.

Description

Technical Field

[0001] The utility model relates to the field of air ducts, in particular to a steel-faced magnesia composite air duct. Background Technique

[0002] The steel-faced magnesia composite air duct is a new type of ventilation duct material, which is composed of a metal steel face and an internal magnesia material. This kind of air duct combines the firmness and durability of steel and many excellent properties of magnesia materials. In the ventilation system, the steel-faced magnesia composite air duct plays a crucial role. It can effectively transport air to ensure the circulation and freshness of indoor air. Whether in commercial buildings, industrial factories or civil residences, this kind of air duct can provide people with a comfortable indoor environment.

[0003] The inside of the steel-faced magnesia composite air duct is mainly composed of a surface layer and a core material. The surface layer is mainly made of single-layer or double-layer color steel, while the core material is composed of a magnesium oxysulfate board. The steel-faced magnesia composite air duct has excellent fire prevention performance and can effectively prevent the spread of fire through the air duct in case of a fire, winning precious time for personnel evacuation and fire fighting and rescue. At the same time, the steel-faced magnesia composite air duct has good moisture-proof performance, enabling it to operate stably in various humid environments and not being easily damaged by water vapor erosion.

[0004] Although the existing steel-faced magnesia composite air duct can play a certain role in fire prevention and moisture-proof during the ventilation process, when this kind of steel-faced magnesia composite air duct is installed and fixed on the wall, the distance between the air duct and the wall is relatively fixed. The distance between the air duct and the wall generally depends on the length of the fixing device, making it difficult to change the distance between the air duct and the wall. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a steel-faced magnesia composite air duct to solve the technical problem that the distance between the traditional steel-faced magnesia composite air duct and the fixed wall is not easy to adjust.

[0006] To achieve the above object, the utility model provides the following technical solution: A steel-faced magnesia composite air duct, including an air duct body. A fixing frame is arranged at the top of the air duct body, and a connecting block is connected to the top end of the fixing frame. A first bevel gear and a second bevel gear are arranged inside the connecting block. An adjusting knob is installed on one side of the connecting block, and one end of the adjusting knob is connected to a rotating rod, and the end of the rotating rod is connected to the second bevel gear. A screw rod is installed at the top of the connecting block, and the end of the screw rod is connected to the first bevel gear. A fixing column is sleeved on the outer wall of the screw rod, and a fixing seat is connected to the top end of the fixing column.

[0007] By adopting the above technical solution, the problem that it is not easy to adjust the distance between the traditional steel-surface magnesia composite air duct and the fixed wall during installation is solved. Rotating the adjustment button drives the rotating rod to rotate, so that the second bevel gear connected to the end of the rotating rod drives the first bevel gear to rotate, and the screw rod connected to the first bevel gear rotates. Since the port of the fixed column is threadedly connected to the screw rod, the rotation of the screw rod causes the entire fixed frame to move upward or downward, thereby realizing the adjustment of the distance between the air duct and the wall during the installation of the air duct.

[0008] The present utility model is further configured such that first connecting plates and second connecting plates are respectively connected to both sides of the air duct body, and multiple groups of first connecting plates and second connecting plates can be fixedly connected by bolts.

[0009] By adopting the above technical solution, when multiple air duct bodies are combined and connected, the first connecting plate at one end of one air duct body and the second connecting plate at one end of another air duct body can be fixedly connected by bolts.

[0010] The present utility model is further configured such that a support frame is fixed to one side of the first connecting plate and the second connecting plate, and the inner wall size of the support frame is the same as the outer wall size of the air duct body.

[0011] By adopting the above technical solution, the support frame is fixedly connected to the connecting plate, and the support frame is sleeved and fixed on the outer wall of the air duct body. After the assembly and connection of multiple air duct bodies are completed, the support frame plays a certain role in supporting and bearing the force on the air duct body.

[0012] The present utility model is further configured such that a sealing ring is provided on one side of the second connecting plate, and the sealing ring is made of silicone rubber material.

[0013] By adopting the above technical solution, the sealing ring made of silicone rubber material has good high-temperature resistance and can be used in a high-temperature environment without deformation and loss of sealing performance. The sealing ring seals the gap at the connection between the first connecting plate and the second connecting plate to prevent air leakage in the combined and connected air duct bodies.

[0014] The present utility model is further configured such that a limiting block is fixed to the end of the screw rod, and the diameter of the limiting block is larger than the diameter of the screw rod.

[0015] By adopting the above technical solution, when the screw rod moves to the lower end of the inner wall of the fixed column, the limiting block is buckled inside the fixed column to prevent the screw rod from detaching from the fixed column when adjusting the distance between the fixed frame and the fixed wall.

[0016] The present utility model is further configured such that a first structural layer, a second structural layer and a third structural layer are provided inside the air duct body, and the first structural layer is made of steel plate material.

[0017] By adopting the above technical solution, a multi-layer structural functional layer is adopted inside the air duct body, thereby prolonging the service life of the air duct body. The first structural layer made of steel plate material enables the air duct body to have high strength and be able to withstand large pressure. At the same time, it can better fix the air duct body by the fixing frame, preventing the air duct body from detaching from the fixing frame and causing a falling phenomenon.

[0018] The present utility model is further configured such that the second structural layer is made of rock wool material, and rock wool belongs to a non-combustible material.

[0019] By adopting the above technical solution, the second structural layer made of rock wool has good heat insulation and heat preservation performance. While preventing fire, it can also reduce the heat exchange between the air inside the air duct and the outside. In addition, rock wool has good sound absorption and noise reduction effects, enabling the second structural layer to absorb the noise inside the air duct body.

[0020] The present utility model is further configured such that the third structural layer is made of magnesia board material, and the magnesia board material has high strength and hardness.

[0021] By adopting the above technical solution, the magnesia board material itself is relatively light. Under the condition of ensuring the strength of the air duct body, the third structural layer made of magnesia board material can reduce the overall weight of the air duct body. In addition, the magnesia board material has a high melting point, enabling the third structural layer to withstand a certain degree of high temperature without burning, effectively preventing the spread of fire in case of a fire and buying precious time for personnel evacuation and fire fighting and rescue.

[0022] In summary, the present utility model mainly has the following beneficial effects:

[0023] 1. By providing an air duct body, a fixing frame, a connecting block, a screw rod, a fixing column and an adjusting knob, the present utility model solves the problem that it is difficult to adjust the distance between the air duct and the fixed wall during the installation of traditional steel-magnesia composite air ducts. Rotating the adjusting button drives the rotating rod to rotate, so that the second bevel gear connected to the end of the rotating rod drives the first bevel gear to rotate, causing the screw rod connected to the first bevel gear to rotate. Since the port of the fixing column is threadedly connected to the screw rod, the rotation of the screw rod causes the entire fixing frame to move upward or downward, thereby realizing the adjustment of the distance between the air duct and the wall during the installation of the air duct.

[0024] 2. The utility model strengthens the connection between the connecting plate and the air duct body by setting a support frame, a first connecting plate, a second connecting plate and a sealing ring. The support frames are fixed on one side of the first connecting plate and the second connecting plate respectively, and the air duct body is connected to the inner wall of the support frame, preventing the air duct from falling off between multiple air duct bodies during use. In addition, when two air duct bodies are combined and connected, the first connecting plate and the second connecting plate are connected and squeeze the sealing ring, so that the sealing ring seals the connection between the two air duct bodies, preventing the gas flowing inside the air duct body from floating out through the connection gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall schematic diagram of the device of the utility model;

[0026] Figure 2 is the air duct structure diagram of the utility model;

[0027] Figure 3 is the schematic diagram of the adjusting device of the utility model;

[0028] Figure 4 is the internal structure diagram of the adjusting device of the utility model;

[0029] Figure 5 is the internal structure diagram of the air duct body of the utility model.

[0030] In the figure: 1. Air duct body; 11. First structural layer; 12. Second structural layer; 13. Third structural layer; 2. Fixed frame; 21. Connecting block; 22. Screw rod; 23. First bevel gear; 24. Limiting block; 3. Fixed seat; 31. Fixed column; 4. First connecting plate; 5. Second connecting plate; 51. Support frame; 52. Sealing ring; 6. Adjusting knob; 61. Rotating rod; 62. Second bevel gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] 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. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0032] Next, the embodiments of the present utility model will be described according to its overall structure.

[0033] A steel-faced magnesia composite air duct, as Figure 1 - Figure 5As shown in the figure, it includes an air duct body 1. A fixing frame 2 is provided at the top of the air duct body 1. A connecting block 21 is connected to the top end of the fixing frame 2. A first bevel gear 23 and a second bevel gear 62 are arranged inside the connecting block 21. An adjusting knob 6 is installed on one side of the connecting block 21. One end of the adjusting knob 6 is connected to a rotating rod 61. The end of the rotating rod 61 is connected to the second bevel gear 62. A screw rod 22 is installed on the top of the connecting block 6. The end of the screw rod 22 is connected to the first bevel gear 23. A fixing column 31 is sleeved on the outer wall of the screw rod 22. The top end of the fixing column 31 is connected to a fixing seat 3, which solves the problem that it is not easy to adjust the distance between the air duct and the fixed wall during the installation of the traditional steel-faced magnesia composite air duct. Rotating the adjusting button 6 drives the rotating rod 61 to rotate, so that the second bevel gear 62 connected to the end of the rotating rod 61 drives the first bevel gear 23 to rotate, making the screw rod 22 connected to the first bevel gear 23 rotate. Since the port of the fixing column 31 is threadedly connected to the screw rod 22, the rotation of the screw rod 22 causes the entire fixing frame 2 to move upward or downward, thereby realizing the adjustment of the distance between the air duct and the wall during the installation of the air duct.

[0034] Please refer to Figure 2 , the first connecting plate 4 and the second connecting plate 5 are respectively connected to both sides of the air duct body 1. Multiple groups of the first connecting plates 4 and the second connecting plates 5 can be fixedly connected by bolts. When multiple air duct bodies 1 are combined and connected, the first connecting plate 4 at one end of one air duct body 1 can be fixedly connected to the second connecting plate 5 at one end of another air duct body 1 by bolts.

[0035] Please refer to Figure 2 , a support frame 51 is fixed on one side of the first connecting plate 4 and the second connecting plate 5. The inner wall size of the support frame 51 is the same as the outer wall size of the air duct body 1. The support frame 51 is fixedly connected to the connecting plate and is sleeved and fixed on the outer wall of the air duct body 1. After the assembly and connection of multiple air duct bodies 1 are completed, the support frame 51 plays a certain role in supporting and bearing the force on the air duct body 1.

[0036] Please refer to Figure 1 , a sealing ring 52 is provided on one side of the second connecting plate 5. The sealing ring 52 is made of silicone rubber material. The sealing ring 52 made of silicone rubber material has good high-temperature resistance and can be used in a higher temperature environment without deformation and loss of sealing performance. The sealing ring 52 seals the gap at the connection between the first connecting plate 4 and the second connecting plate 5 to prevent air leakage in the combined and connected air duct body 1.

[0037] Please refer to Figure 4, a limiting block 24 is fixed to the end of the screw rod 22, and the diameter of the limiting block 24 is greater than that of the screw rod 22. When the screw rod 22 is displaced to the lower end of the inner wall of the fixed column 31, the limiting block 24 is buckled inside the fixed column 31 to prevent the screw rod 22 from detaching from the fixed column 31 when a person adjusts the distance between the fixed frame 2 and the fixed wall.

[0038] Please refer to Figure 5 , a first structural layer 11, a second structural layer 12, and a third structural layer 13 are provided inside the air duct body 1, and the first structural layer 11 is made of steel plate. The air duct body 1 adopts a multi-layer structural functional layer inside, thereby extending the service life of the air duct body 1. The first structural layer 11 made of steel plate enables the air duct body 1 to have a higher strength and be able to withstand greater pressure. At the same time, it can better fix the air duct body 1 by the fixed frame 2 to prevent the air duct body 1 from detaching from the fixed frame 2 and causing a falling phenomenon.

[0039] Please refer to Figure 5 , the second structural layer 12 is made of rock wool. Rock wool belongs to non-combustible materials. The second structural layer 12 made of rock wool has good heat insulation and heat preservation performance. It can reduce the heat exchange between the air inside the air duct and the outside while preventing fire. In addition, rock wool has good sound absorption and noise reduction effects, so that the second structural layer 12 absorbs the noise inside the air duct body 1.

[0040] Please refer to Figure 5 , the third structural layer 13 is made of magnesia board. The magnesia board has relatively high strength and hardness. The magnesia board itself is relatively light. Under the condition of ensuring the strength of the air duct body 1, the third structural layer 13 made of magnesia board can reduce the overall weight of the air duct body 1. In addition, the magnesia board has a relatively high melting point, so that the third structural layer 13 can withstand a certain degree of high temperature without burning, and can effectively prevent the spread of fire in case of a fire, and gain precious time for personnel evacuation and fire fighting and rescue.

[0041] The working principle of the present utility model is as follows: First, fix the fixed seat 3 on the wall surface, and then adjust the distance between the top of the fixed frame 2 and the wall surface by rotating the adjustment knob 6. Rotating the adjustment button 6 drives the rotating rod 61 to rotate, so that the second bevel gear 62 connected to the end of the rotating rod 61 drives the first bevel gear 23 to rotate, causing the screw rod 22 connected to the first bevel gear 23 to rotate. Since the port of the fixed column 31 is threadedly connected to the screw rod 22, the rotation of the screw rod 22 causes the entire fixed frame 2 to move upward or downward. Then, install the air duct body 1 on the inner wall of the fixed frame 21 and fix it with bolts to prevent the air duct body 1 from detaching and falling off the fixed frame 2. When connecting two groups of air duct bodies 1, fix the first connecting plate 4 on one side of one group of air duct bodies 1 and the second connecting plate 5 on one side of the other group of air duct bodies 1 with bolts. The first connecting plate 4 and the second connecting plate 5 are pressed so that the sealing ring 52 seals the connection between the two groups of air duct bodies 1.

[0042] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations that do not contribute creatively to the embodiments according to needs, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A steel-faced magnesia composite air duct, comprising an air duct body (1), characterized in that: A fixing frame (2) is provided at the top of the air duct body (1), and a connecting block (21) is connected to the top end of the fixing frame (2). A first bevel gear (23) and a second bevel gear (62) are arranged inside the connecting block (21). An adjusting knob (6) is installed on one side of the connecting block (21), and a rotating rod (61) is connected to one end of the adjusting knob (6), and the end of the rotating rod (61) is connected to the second bevel gear (62). A screw rod (22) is installed on the top of the connecting block (21), and the end of the screw rod (22) is connected to the first bevel gear (23). A fixing column (31) is sleeved on the outer wall of the screw rod (22), and a fixing seat (3) is connected to the top end of the fixing column (31).

2. The magnesium-based composite air duct with a steel surface according to claim 1, characterized in that: A first connecting plate (4) and a second connecting plate (5) are respectively connected to both sides of the air duct body (1), and multiple groups of the first connecting plates (4) and the second connecting plates (5) can be fixedly connected by bolts.

3. The magnesium-based composite air duct with a steel surface according to claim 2, characterized in that: A support frame (51) is fixed to one side of the first connecting plate (4) and the second connecting plate (5), and the inner wall size of the support frame (51) is the same as the outer wall size of the air duct body (1).

4. The steel-surfaced magnesium composite air duct according to claim 2, characterized in that: A sealing ring (52) is arranged on one side of the second connecting plate (5), and the sealing ring (52) is made of silicone rubber material.

5. The steel-surfaced magnesium composite air duct according to claim 1, characterized in that: A limiting block (24) is fixed to the end of the screw rod (22), and the diameter of the limiting block (24) is larger than the diameter of the screw rod (22).

6. The steel-surfaced magnesium composite air duct according to claim 1, characterized in that: A first structural layer (11), a second structural layer (12) and a third structural layer (13) are arranged inside the air duct body (1), and the first structural layer (11) is made of steel plate material.

7. A steel-faced magnesia composite air duct according to claim 6, characterized in that: The second structural layer (12) is made of rock wool material, and rock wool belongs to non-combustible material.

8. The magnesia-based composite air duct with a steel surface according to claim 6, characterized in that: The third structural layer (13) is made of magnesia board material, and the magnesia board material has relatively high strength and hardness.

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