Industrial heat insulation air pipe with air layer

Abstract

The utility model discloses an industrial heat insulation air pipe with an air layer. The industrial heat insulation air pipe comprises an air pipe base body, an outer layer heat insulation plate, an L-shaped blocking piece and a keel. Flanges of the air pipe base body are connected with the corner connectors through bolts and block the L-shaped blocking pieces at the four corners, the outer-layer heat insulation plates are installed on the two inner sides of the L-shaped blocking pieces, and a keel is arranged between each outer-layer heat insulation plate and the outer side of the air pipe base body. The section of the keel body is U-shaped, the main back face of the keel is tightly attached to the outer-layer heat insulation plate, and the side wall of the keel abuts against the air pipe base body.

Description

Technical Field

[0001] This utility model relates to the field of industrial air duct technology, and in particular to an industrial heat-insulated air duct with an air layer. Background Technology

[0002] The existing industrial insulated air ducts are installed by fixing the flanges and corner brackets of the duct base, with the corner brackets pressing down on the L-shaped baffles at the four corners; two layers of fireproof and heat-insulating boards are covered on the outside of the duct base and pressed down by the L-shaped baffles, and then tightened with screws.

[0003] Most existing ductwork suitable for short-term fireproofing and insulation still uses double-layer fireproof materials; especially for standards of less than 30 minutes, current industrial insulated ductwork is not well-suited for this scenario in terms of materials, cost, and weight. Therefore, we have designed a lightweight industrial insulated duct with an air layer.

[0004] In addition, the existing methods for fastening L-shaped baffles are either to drive screws into the fireproof and heat-insulating material, which is easy to loosen; or to drive bolts directly into the duct base, which causes unevenness on the inner wall. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention provides an industrial heat insulation air with an air layer, which aims to solve the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: an industrial heat-insulated duct with an air layer, comprising a duct base, an outer heat insulation board, L-shaped baffles, and a keel; the flange of the duct base is connected to the corner brackets by bolts, and the L-shaped baffles at the four corners are blocked; the outer heat insulation board is installed on the two inner sides of the L-shaped baffles; a keel is provided between each outer heat insulation board and the outer side of the duct base; the main body of the keel has a U-shaped cross section, the back of the keel is close to the outer heat insulation board, and the side wall of the keel abuts against the duct base.

[0007] Preferably, the two sides of the keel are bent inward to form a contact surface and are tightly attached to the duct base.

[0008] Preferably, the L-shaped baffle is fixedly connected to the main back of the keel by bolts and nuts or rivet nuts.

[0009] Preferably, the upper side of the keel contacts the flange of the duct base.

[0010] Preferably, the two sides of the keel have ventilation holes spaced apart to improve its heat dissipation capacity.

[0011] Preferably, adjacent keels are welded together for fixation.

[0012] The beneficial effects of this invention are: reduced use of fireproof materials, lighter overall weight, and the formation of an air layer between the duct substrate and the outer insulation board, making it suitable for standard fireproof and heat-insulating ducts for short periods of up to 30 minutes. Simultaneously, a fixed structure is formed using a keel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the connection between the duct base and the angle bracket bolts of this utility model.

[0015] Figure 3 This is a schematic diagram of the keel structure of this utility model. Figure 1 .

[0016] Figure 4 This is a schematic diagram of the keel structure of this utility model. Figure 2 . Detailed Implementation

[0017] Please see Figure 1-4 This utility model provides a technical solution: an industrial heat-insulated air duct with an air layer, including an air duct base 1, an outer heat insulation plate 3, L-shaped baffles 4 and a keel 5; the flange 2 of the air duct base 1 is connected to the corner bracket bolt and blocks the four corners of the L-shaped baffles 4, the outer heat insulation plate 3 is installed on the two inner sides of the L-shaped baffles 4, and a keel 5 is provided between each outer heat insulation plate 3 and the outer side of the air duct base 1; the main cross section of the keel 5 is U-shaped, the main back side 51 of the keel 5 is close to the outer heat insulation plate 3, and the side wall of the keel 5 abuts against the air duct base 1.

[0018] This invention reduces the use of fireproof materials, making the overall weight lighter and creating an air layer between the duct substrate and the outer insulation board, making it suitable for ducts requiring standard fireproof and heat insulation for short periods of up to 30 minutes.

[0019] Furthermore, the use of a keel instead of a sandwich insulation board improves the strength of its connection structure; the two sides of the keel 5 are bent inward to form a contact surface 52 and are tightly attached to the duct base 1, improving stability; the L-shaped baffle 4 is fixedly connected to the main back side 51 of the keel 5 by bolts and nuts or rivet nuts, improving the connection strength while avoiding bolts and other objects hitting the structure of the duct base 1, ensuring that the inner wall channel is smooth and flat.

[0020] In addition, the upper side of the keel contacts the flange of the duct base; adjacent keels 5 are welded and fixed together (one long and one short are welded vertically or cut and spliced ​​at an angle and then welded) to enhance stability.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An industrial heat-insulated duct with an air layer, comprising a duct base (1), an outer heat insulation plate (3), L-shaped baffles (4), and a keel (5); the flange (2) of the duct base (1) is connected to the corner bracket bolt and blocks the four corners of the L-shaped baffles (4), the outer heat insulation plate (3) is installed on the two inner sides of the L-shaped baffles (4), characterized in that, Each outer heat insulation board (3) is provided with a keel (5) between it and the outer side of the duct base (1); the main cross section of the keel (5) is U-shaped, the main back side (51) of the keel (5) is attached to the outer heat insulation board (3), and the side wall of the keel (5) is against the duct base (1).

2. The industrial heat-insulating air duct with an air layer according to claim 1, characterized in that, The two sides of the keel (5) are bent inward to form a contact surface (52) and are tightly attached to the duct base (1).

3. The industrial heat-insulating air duct with an air layer according to claim 1, characterized in that, The L-shaped baffle (4) is fixedly connected to the main back (51) of the keel (5) by bolts, nuts or rivets.

4. The industrial heat-insulating air duct with an air layer according to claim 1, characterized in that, The outer side of the keel (5) contacts the flange (2) of the duct base (1).

5. An industrial heat-insulating air duct with an air layer according to claim 4, characterized in that, The two sides of the keel (5) are spaced apart with heat dissipation holes; Improve its heat dissipation capacity.

6. An industrial heat-insulating duct with an air layer according to claim 4, characterized in that, The adjacent keels (5) are welded and fixed together.

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