Internal thermal insulation metal air pipe for clean engineering

Abstract

The utility model discloses an internal heat preservation metal air pipe for clean engineering, and relates to the technical field of air pipes. The device comprises an air pipe body used for transporting gas; the outer wall of the flange plate body is in sliding connection with the two ends of the air pipe body; the fixing bolts are used for fixing the flange plate body, and the outer walls of the fixing bolts are in sliding connection with the inner wall of the flange plate body; the air pipe body comprises a metal shell, a four-corner connecting structure is slidably connected to the joint of the inner wall of the metal shell, the flange plate body and the four-corner connecting structure are arranged, so that the air pipe body can be spliced, and the integrity of the metal shell is not affected; the installation difficulty is reduced, meanwhile, the size of the metal air pipe is small, and the purposes that installation of the metal air pipe is convenient, and meanwhile the integrity of the air pipe is not damaged are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to an internally insulated metal air duct for a clean project. Background Art

[0002] Metal air ducts are mostly used in pipeline systems for air transportation and distribution. They have a certain strength and stiffness, can withstand wind pressure and thermal expansion and contraction, and can be made into various shapes and sizes to adapt to different installation environments and air flow requirements. The surface of metal air ducts is generally treated with anti-corrosion to improve corrosion resistance and service life, and is widely used in air conditioning and ventilation systems of industrial and civil buildings.

[0003] In the prior art, the internal insulation of metal air ducts is mostly achieved by fixing glass wool. Since the connection between glass wool and metal air ducts mostly uses threaded fixation, the threaded fixation method will damage the integrity of the metal air duct. To avoid affecting the insulation effect, the staff will add glass wool at the threaded drilling positions on the outer wall of the metal air duct. This method makes the processing time of the internally insulated metal air duct long and increases the volume of the metal air duct. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the technical solution adopted by the utility model to solve its technical problems is: an internally insulated metal air duct for a clean project, including: an air duct body for transporting gas; a flange body, the outer wall of the flange body is slidably connected to both ends of the air duct body; a fixing bolt for fixing the flange body, the outer wall of the fixing bolt is slidably connected to the inner wall of the flange body; the air duct body includes a metal shell, a four-corner connection structure is slidably connected at the junction of the inner wall of the metal shell, a bevel positioning block is fixedly connected to the inner wall of the metal shell, a bevel glass wool is slidably connected to the side of the bevel positioning block away from the metal shell, a bevel iron plate is slidably connected to the side of the bevel glass wool away from the bevel positioning block, a threaded hole is opened in the wall of the air duct body, the outer wall of the fixing bolt is threadedly connected to the outer wall of the threaded hole, the flange body and the four-corner connection structure enable the air duct body to be completed by splicing, so that the integrity of the metal shell is not affected.

[0005] Preferably, the four-corner connection structure includes a glass wool column. A limiting strip is fixedly connected to the outer wall of the glass wool column. Plug-in blocks are inserted at both ends of the glass wool column. An inclined surface connection block is fixedly connected to the outer surface of the plug-in block. A cross-shaped fixing plate is slidably connected to the outer wall of the inclined surface connection block. The outer wall of the cross-shaped fixing plate is slidably connected to both sides of the inclined surface iron plate. The outer wall of the cross-shaped fixing plate is slidably connected to both sides of the inclined surface glass wool. The outer wall of the limiting strip is slidably connected to the inner wall of the metal shell. Under the limitation of the cross-shaped fixing plate and the metal shell, the inclined surface glass wool and the inclined surface iron plate are more closely attached to the inner wall of the metal shell, so that the inclined surface glass wool remains stable without being fixed by bolts.

[0006] Preferably, the flange plate body includes an angle steel. The inner wall of the angle steel is slidably connected to the outer wall of the fixing bolt through a through hole, and the through hole is opened in the wall of the angle steel. A plug-in strip is fixedly connected to the inner wall of the angle steel. An inclined surface frame is fixedly connected to the outer wall of the plug-in strip. A triangular inclined surface block is arranged outside the inclined surface frame. An activity groove is opened in the wall of the inclined surface frame. The outer walls of the triangular inclined surface block and the inclined surface frame are both fixedly connected to the outer wall of the angle steel. The outer wall of the activity groove is slidably connected to the outer wall of the cross-shaped fixing plate. Under the limitation of the cross-shaped fixing plate and the metal shell, the inclined surface glass wool and the inclined surface iron plate are more closely attached to the inner wall of the metal shell, so that the inclined surface glass wool remains stable without being fixed by bolts.

[0007] The beneficial effects of the present utility model are as follows:

[0008] 1. By providing the flange plate body and the four-corner connection structure, the air duct body can be completed by splicing, so that the integrity of the metal shell is not affected, the installation difficulty is reduced, and the volume of the metal air duct itself is smaller.

[0009] 2. By providing the flange plate body and the air duct body assembly for cooperation, prestress is generated on the inclined surface glass wool and the inclined surface iron plate through the extrusion of the flange plate, so that the metal air duct has an impact resistance effect. Under the limitation of the cross-shaped fixing plate and the metal shell, the inclined surface glass wool and the inclined surface iron plate are more closely attached to the inner wall of the metal shell, so that the inclined surface glass wool remains stable without being fixed by bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is the front view of the present utility model;

[0011] Figure 2 is the exploded view of the present utility model;

[0012] Figure 3 is the structural schematic diagram of the air duct body of the present utility model;

[0013] Figure 4It is a schematic structural diagram of part A of the present utility model;

[0014] Figure 5 It is a schematic structural diagram of the flange body of the present utility model.

[0015] In the figure: 1, air duct body; 2, flange body; 3, fixing bolt; 4, threaded hole; 11, metal shell; 12, four-corner connection structure; 13, inclined plane positioning block; 14, inclined plane glass wool; 15, inclined plane iron plate; 121, glass wool column; 122, limiting strip; 123, plug-in block; 124, inclined plane connection block; 125, cross fixing plate; 21, angle steel; 22, through hole; 23, plug-in strip; 24, inclined plane frame; 25, triangular inclined plane block; 26, movable groove. Specific embodiments

[0016] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and design various embodiments with various modifications suitable for specific purposes.

[0017] Embodiment: Please refer to Figure 1 - Figure 5, the utility model provides a technical solution: an internally insulated metal air duct for a clean project, including: an air duct body 1 for transporting gas; a flange body 2, the outer wall of the flange body 2 is slidably connected to both ends of the air duct body 1; a fixing bolt 3 for fixing the flange body 2, the outer wall of the fixing bolt 3 is slidably connected to the inner wall of the flange body 2; the air duct body 1 includes a metal shell 11, a four-corner connection structure 12 is slidably connected at the junction of the inner wall of the metal shell 11, a bevel positioning block 13 is fixedly connected to the inner wall of the metal shell 11, a bevel glass wool 14 is slidably connected to the side of the bevel positioning block 13 away from the metal shell 11, a bevel iron plate 15 is slidably connected to the side of the bevel glass wool 14 away from the bevel positioning block 13, a threaded hole 4 is opened in the wall of the air duct body 1, and the outer wall of the fixing bolt 3 is threadedly connected to the outer wall of the threaded hole 4. Before assembling the bevel glass wool 14 and the bevel iron plate 15, insert the glass wool column 121 between two mutually perpendicular bevel positioning blocks 13. Due to the connection between the limiting strip 122 and the metal shell 11, the glass wool column 121 cannot fall off. At this time, insert the insertion block 123 and the bevel connection block 124 at both ends of the glass wool column 121, and after the insertion is completed, install the flange body 2 on one side of the air duct body 1. At this time, the flange body 2 is fixed due to the cooperation of the fixing bolt 3 and the threaded hole 4. Then insert the cross fixing plate 125 on the other side of the air duct body 1, and sequentially push the bevel glass wool 14 and the bevel iron plate 15 into the gap between the cross fixing plate 125 and the bevel positioning block 13. At this time, after installing the flange body 2 on the other side, the assembly of the metal air duct is completed.

[0018] The four-corner connection structure 12 includes a glass wool column 121, a limiting strip 122 is fixedly connected to the outer wall of the glass wool column 121, insertion blocks 123 are inserted at both ends of the glass wool column 121, a bevel connection block 124 is fixedly connected to the outer surface of the insertion block 123, the outer wall of the bevel connection block 124 is slidably connected to a cross fixing plate 125, the outer wall of the cross fixing plate 125 is slidably connected to both sides of the bevel iron plate 15, the outer wall of the cross fixing plate 125 is slidably connected to both sides of the bevel glass wool 14, and the outer wall of the limiting strip 122 is slidably connected to the inner wall of the metal shell 11. At this time, the flange body 2 is fixed due to the cooperation of the fixing bolt 3 and the threaded hole 4. Then insert the cross fixing plate 125 on the other side of the air duct body 1. At this time, the cross fixing plate 125 passes through the gap reserved between the glass wool column 121 and the bevel glass wool 14 and the bevel iron plate 15, and finally inserts into the movable slot 26 of the bevel frame 24 and the gap left between the bevel frame 24 and the triangular bevel block 25. After the cross fixing plates 125 are installed at the four corners of the metal shell 11, sequentially push the bevel glass wool 14 and the bevel iron plate 15 into the gap between the cross fixing plate 125 and the bevel positioning block 13.

[0019] The flange body 2 includes an angle steel 21. The inner wall of the angle steel 21 is slidably connected to the outer wall of the fixing bolt 3 through a through hole 22, and the through hole 22 is opened in the wall of the angle steel 21. A plugging strip 23 is fixedly connected to the inner wall of the angle steel 21. An inclined surface frame 24 is fixedly connected to the outer wall of the plugging strip 23. A triangular inclined surface block 25 is arranged outside the inclined surface frame 24. An activity groove 26 is opened in the wall of the inclined surface frame 24. The outer walls of the triangular inclined surface block 25 and the inclined surface frame 24 are both fixedly connected to the outer wall of the angle steel 21. The outer wall of the activity groove 26 is slidably connected to the outer wall of the cross fixing plate 125. When the flange body 2 is connected to the air duct body 1, the angle steel 21 fits against the port of the metal shell 11. The plugging strip 23 enters the plane position of the protruding part of the inclined surface positioning block 13. At the same time, the inclined surface frame 24 fits against the inclined surface positions of the inclined surface positioning block 13, the inclined surface glass wool 14 and the inclined surface iron plate 15. The triangular inclined surface block 25 fits against the plugging block 123 and the inclined surface connecting block 124. At this time, the force when the flange body 2 is pushed inward not only limits the internal components of the air duct body 1, but also slightly squeezes them, causing prestress in the internal components of the air duct body 1.

[0020] Working principle:

[0021] During use, the air duct body 1 is set to achieve the effect of internal thermal insulation without adding other components externally. Looking from the outside to the inside at the four side wall positions of the air duct body 1, it can be seen that the metal air duct is composed of a metal shell 11, inclined positioning blocks 13, inclined glass wool 14, and inclined iron plates 15. Among them, the metal shell 11, as a component of the metal air duct, functions to limit the external shape size, while the inclined positioning blocks 13 fixed on the four inner walls of the metal shell 11 play the role of assisting in the installation of subsequent components. Before assembling the inclined glass wool 14 and the inclined iron plate 15, the glass wool column 121 is inserted between two mutually perpendicular inclined positioning blocks 13. Due to the connection between the limiting strip 122 and the metal shell 11, the glass wool column 121 cannot fall off. At this time, the plug-in blocks 123 and the inclined connection blocks 124 are inserted at both ends of the glass wool column 121, and after the insertion is completed, the flange plate body 2 is installed on one side of the air duct body 1. At this time, the flange plate body 2 is fixed due to the cooperation of the fixing bolts 3 and the threaded holes 4. Then, the cross-shaped fixing plate 125 is inserted into the other side of the air duct body 1. At this time, the cross-shaped fixing plate 125 passes through the gap reserved between the glass wool column 121 and the inclined glass wool 14 and the inclined iron plate 15, and finally inserts into the movable slot 26 of the inclined frame 24 and the gap between the inclined frame 24 and the triangular inclined block 25. After the cross-shaped fixing plates 125 are installed at the four corners of the metal shell 11, the inclined glass wool 14 and the inclined iron plate 15 are successively pushed into the gap between the cross-shaped fixing plate 125 and the inclined positioning block 13. At this time, after installing the flange plate body 2 on the other side, the assembly of the metal air duct is completed. During the assembly process, except for the fixing bolts 3 of the fixing angle steel 21, no drilling is performed on the middle section area of the metal shell 11, thus ensuring the integrity of the metal air duct. Moreover, the threaded hole 4 position of the metal shell 11 does not drill through the inclined part of the inclined glass wool 14, so that the thermal insulation effect at the connection position between the flange plate body 2 and the air duct body 1 is not affected.

[0022] The flange plate body 2 is set to clamp the four-corner connection structure 12, and then the internal components of the air duct body 1 are limited by the four-corner connection structure 12 to achieve the purpose of assembling the metal air duct. When the flange plate body 2 is connected to the air duct body 1, the angle steel 21 fits against the port of the metal shell 11, and the fixing bolts 3 are connected to the threaded holes 4 through the through holes 22. At this time, the plug-in strips 23 enter the plane position of the protruding part of the inclined positioning block 13, and at the same time, the inclined frame 24 is in contact with the inclined positions of the inclined positioning block 13, the inclined glass wool 14, and the inclined iron plate 15, and the triangular inclined block 25 is in contact with the plug-in block 123 and the inclined connection block 124. At this time, the force when the flange plate body 2 is pushed inward not only limits the internal components of the air duct body 1 but also slightly compresses them, causing the internal components of the air duct body 1 to generate prestress, making the installation of the internal components of the air duct body 1 more stable and increasing the impact resistance of the metal air duct.

[0023] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented by conventional means in the art unless otherwise specified and limited.

Claims

1. A heat-insulating metal air duct for clean engineering, characterized in that: include: An air duct body (1), wherein the air duct body (1) is used for transporting gas; A flange body (2), wherein the outer wall of the flange body (2) is slidably connected to both ends of the air duct body (1); A fixing bolt (3), the fixing bolt (3) being used to fix the flange body (2), the outer wall of the fixing bolt (3) being slidably connected to the inner wall of the flange body (2); The air duct body (1) comprises a metal shell (11), a four-corner connection structure (12) is slidably connected at the intersection of the inner wall of the metal shell (11), an inclined positioning block (13) is fixedly connected to the inner wall of the metal shell (11), a side of the inclined positioning block (13) away from the metal shell (11) is slidably connected to an inclined glass wool (14), and a side of the inclined glass wool (14) away from the inclined positioning block (13) is slidably connected to an inclined iron plate (15).

2. The heat-insulating metal air duct for clean engineering according to claim 1, characterized in that: A threaded hole (4) is provided in the wall of the air duct body (1), and the outer wall of the fixing bolt (3) is threadedly connected to the outer wall of the threaded hole (4).

3. The heat-insulating metal air duct for clean engineering according to claim 1, characterized in that: The four-corner connection structure (12) comprises a glass wool column (121), the outer wall of the glass wool column (121) is fixedly connected to a limit strip (122), both ends of the glass wool column (121) are plugged with plug-in blocks (123), the outer surface of the plug-in block (123) is fixedly connected to an inclined surface connection block (124), and the outer wall of the inclined surface connection block (124) is slidably connected to a cross fixing plate (125).

4. The heat-insulating metal air duct for clean engineering according to claim 3, characterized in that: The outer wall of the cross fixing plate (125) is slidably connected to both sides of the inclined iron plate (15), the outer wall of the cross fixing plate (125) is slidably connected to both sides of the inclined glass wool (14), and the outer wall of the limit strip (122) is slidably connected to the inner wall of the metal shell (11).

5. The heat-insulating metal air duct for clean engineering according to claim 3, characterized in that: The flange body (2) comprises an angle steel (21), the inner wall of the angle steel (21) is slidably connected to the outer wall of the fixing bolt (3) via a through hole (22), and the through hole (22) is provided in the wall of the angle steel (21), the inner wall of the angle steel (21) is fixedly connected to a plug-in strip (23), the outer wall of the plug-in strip (23) is fixedly connected to a bevel frame (24), a triangular bevel block (25) is provided outside the bevel frame (24), and a movable groove (26) is provided in the wall of the bevel frame (24).

6. The heat-insulating metal air duct for clean engineering according to claim 5, characterized in that: The outer wall of the triangular bevel block (25) and the outer wall of the bevel frame (24) are both fixedly connected to the outer wall of the angle steel (21), and the outer wall of the movable groove (26) is slidably connected to the outer wall of the cross fixing plate (125).

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