Air pipe with built-in detachable fireproof medium

Abstract

The utility model discloses an air pipe with a built-in detachable fireproof medium, which comprises an air pipe and a fireproof medium layer, the fireproof medium layer comprises a flame-retardant fabric and a viscous surface arranged on the outer surface of the flame-retardant fabric, and the fireproof medium layer clings to the inner surface of the air pipe through the viscous surface; according to the utility model, the fireproof medium layer is adhered in the air pipe, combustible microparticles are adhered to the flame-retardant fabric when waste gas passes through the air pipe, and when the adhesion amount of the combustible microparticles of the flame-retardant fabric exceeds a safety range, the fireproof medium layer adhered in the air pipe is detached and replaced with a new fireproof medium layer, so that the waste gas can be prevented from entering the air pipe. The fireproof medium layer not only can isolate combustible microparticles from the air pipe and avoid the situation that the air pipe needs to be replaced due to the fact that the combustible microparticles are attached to the air pipe, but also can improve the fireproof performance of the air pipe.

Description

Technical Field

[0001] The utility model relates to the field of air ducts, in particular to an air duct with a built-in detachable fireproof medium. Background Art

[0002] The exhaust gas treatment system usually consists of five parts: a gas collecting hood, a pipeline, an exhaust gas treatment device, a fan, and a chimney. The exhaust gas enters and exits the exhaust gas treatment device through the pipeline. For example, the Chinese patent with the announcement number CN208694634U discloses an exhaust gas duct pretreatment system, including a fan, an activated carbon adsorption tower, an air duct washing device, and a washing tower. The fan and the activated carbon adsorption pass through a pipeline. If the pipeline circulates exhaust gas rich in a large number of combustible microparticles for a long time, a large number of combustible microparticles will adhere to the inner wall of the pipeline. When encountering high temperature or sparks, it will cause a fire, which poses a safety hazard. In view of this, the utility model proposes an air duct with a built-in detachable fireproof medium to solve the above problem. Utility Model Content

[0003] The utility model overcomes the shortcomings of the above-mentioned technology and provides a pipeline with a built-in detachable fireproof medium.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A duct with a built-in detachable fireproof medium comprises a duct and a fireproof medium layer, wherein the fireproof medium layer comprises a flame-retardant fabric and a sticky surface arranged on the outer surface of the flame-retardant fabric, and the fireproof medium layer is tightly attached to the inner surface of the duct through the sticky surface.

[0006] Preferably, a traction rope is provided at the end of the fireproof medium layer, and the fireproof medium layer adhered to the air duct can be removed by pulling the traction rope.

[0007] Preferably, the flame retardant fabric is glass fiber fabric, acrylic fabric or cotton fiber fabric.

[0008] Preferably, a plurality of air ducts are spliced ​​into a pipeline, and the air ducts are detachably connected to each other.

[0009] Preferably, the sticky surface is an inorganic adhesive.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model adheres a fireproof medium layer in the air duct. When the exhaust gas passes through the air duct, the combustible microparticles adhere to the flame-retardant fabric. When the amount of combustible microparticles attached to the flame-retardant fabric exceeds the safe range, the fireproof medium layer adhered to the air duct can be removed by pulling the traction rope and replaced with a new fireproof medium layer. The replacement operation is simple. The fireproof medium layer can not only isolate the combustible microparticles from the air duct, avoiding the situation where the air duct is attached with combustible microparticles and needs to be replaced, but also increase the fireproof performance of the air duct.

[0012] 2. The flame retardant fabric is glass fiber fabric, acrylic fabric or cotton fiber fabric, which has excellent flame retardant properties and is low in price, reducing the cost of replacing the fireproof medium layer of the air duct.

[0013] 3. The sticky surface is an inorganic adhesive, which is resistant to both high and low temperatures, has good stability, and has flame retardant properties, further improving the fire resistance of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the fireproof medium layer of the utility model;

[0015] Figure 2 It is a schematic diagram of the connection between the fireproof medium layer and the air duct of the utility model;

[0016] Figure 3 It is a schematic diagram of the pipeline of the utility model;

[0017] The implementation, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0019] Reference Figure 1-3 , an embodiment of a pipeline with a built-in detachable fireproof medium of the utility model is proposed:

[0020] A duct 1 with a built-in detachable fireproof medium comprises the duct 1 and a fireproof medium layer 2. The fireproof medium layer 2 comprises a flame-retardant fabric 21 and a sticky surface 22 arranged on the outer surface of the flame-retardant fabric 21. The flame-retardant fabric 21 is flexible and can better adapt to and fit ducts 1 of different sizes and shapes compared to plate-shaped flame-retardant materials. The fireproof medium layer 2 is tightly attached to the inner surface of the duct 1 through the sticky surface 22. A traction rope 23 is provided at the end of the fireproof medium layer 2.

[0021] like Figure 3 As shown, a plurality of air ducts 1 are spliced ​​into a pipeline 3, and the air ducts 1 are detachably connected to each other. In this embodiment, two adjacent air ducts 1 are connected by flanges.

[0022] When the exhaust gas passes through the air duct 1, the combustible microparticles adhere to the flame retardant fabric 21. When the amount of combustible microparticles attached to the flame retardant fabric 21 is detected at the inspection port of the pipe 3 and exceeds the safe range, the fireproof medium layer 2 needs to be replaced. The operation of replacing the fireproof medium layer 2 is as follows: first, the pipe 3 is disassembled into multiple air ducts 1; then the traction rope 23 is pulled to remove the fireproof medium layer 2 adhered to the air duct 1; the fireproof medium layer 2 is cut into sheets corresponding to the size of the inner surface of the air duct 1 in advance, and then the sheet-like fireproof medium layer 2 is rolled into a tubular structure, and one end of the traction rope 23 is first extended into the air duct 1. When the traction rope 23 extends from the other end of the air duct 1, the fireproof medium layer 2 can be assisted by pulling the traction rope 23 to continue to extend into the air duct 1. Because the flame retardant fabric 21 is flexible, the shape of the flame retardant fabric 21 can be adjusted during the process of the fireproof medium layer 2 extending into the air duct 1 to prevent the sticky surface 22 from colliding with the inner wall of the air duct 1. When the fireproof medium layer 2 is completely extended into the air duct 1, the adhesive surface 22 is adhered to the inner wall of the air duct 1 so that it is closely attached to the inner surface of the air duct 1, and the replacement operation is simple.

[0023] Specifically, the flame retardant fabric 21 is a glass fiber fabric or an acrylic fiber fabric or a cotton fiber fabric, which has excellent flame retardant properties and is low in price, thereby reducing the cost of replacing the fireproof medium layer 2 of the air duct 1. The fireproof medium layer 2 can not only isolate the combustible microparticles from the air duct 1, thus avoiding the situation where the air duct 1 needs to be replaced due to the combustible microparticles attached thereto, but also increase the fireproof performance of the air duct 1; even if high temperature or sparks are encountered, the combustible microparticles on the flame retardant fabric 21 will catch fire and will be extinguished under the action of the flame retardant fabric 21.

[0024] The sticky surface 22 is an inorganic adhesive, which is resistant to both high and low temperatures, has good stability, and has flame retardant properties, further improving the fireproof performance of the air duct 1. Specifically, the inorganic adhesive may be a phosphate or silicate adhesive.

[0025] In this embodiment, the traction rope 23 is sandwiched between the flame retardant fabric 21 and the adhesive surface 22 .

[0026] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. An air duct with a built-in removable fireproof medium, characterized in that: The invention comprises an air duct (1) and a fireproof medium layer (2), wherein the fireproof medium layer (2) comprises a flame-retardant fabric (21) and a sticky surface (22) arranged on the outer surface of the flame-retardant fabric (21), and the fireproof medium layer (2) is tightly attached to the inner surface of the air duct (1) via the sticky surface (22).

2. The air duct with built-in detachable fireproof medium according to claim 1, characterized in that: A traction rope (23) is provided at the end of the fireproof medium layer (2), and the fireproof medium layer (2) adhered to the air duct (1) can be removed by pulling the traction rope (23).

3. The air duct with built-in detachable fireproof medium according to claim 1, characterized in that: The flame retardant fabric (21) is glass fiber fabric, acrylic fiber fabric or cotton fiber fabric.

4. The air duct with built-in detachable fireproof medium according to claim 1, characterized in that: A plurality of air ducts (1) are spliced ​​into a pipeline (3), and the air ducts (1) are detachably connected to each other.

5. The air duct with built-in detachable fireproof medium according to claim 1, characterized in that: The adhesive surface (22) is an inorganic adhesive.

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