Double-sided steel plate structure fire-resistant air duct with aluminum silicate wool sandwiched therebetween

Abstract

The utility model discloses a fire-resistant air duct with a double-sided steel plate structure and aluminum silicate wool clamped in the middle, and relates to the technical field of air ducts. The fireproof steel pipe comprises an outer side steel pipe and an inner side steel pipe, a filling interlayer is arranged between the outer side steel pipe and the inner side steel pipe, a square hole and a long-strip-shaped hole are formed in the filling interlayer, a plurality of pieces of blocky fireproof cotton are installed in the square hole, and strip-shaped fireproof cotton is installed in the long-strip-shaped hole. According to the utility model, the plurality of hole sites are arranged in the interlayer to fill the aluminum silicate refractory cotton with fixed size, and the size of the corresponding refractory cotton does not need to be changed according to the diameter change of the refractory air pipe, so that the production cost of the refractory cotton is reduced, and the overall cost is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of air pipe, concretely relates to a double -faced steel sheet structure fire -resistant air pipe of middle aluminium silicate cotton sandwich. BACKGROUND

[0002] The traditional air conditioner air pipe is the air pipe without the heat preservation layer, and the heat preservation material is additionally installed at the construction site after the installation is completed, which results in the increase of the on -site construction difficulty, the increase of the workload, the lengthening of the construction period, the increase of the cost, the gap between the heat preservation material blocks, the poor heat preservation effect, the easy falling, the short life and the large maintenance workload, therefore, the corresponding double -layer heat preservation air pipe appears in the prior art.

[0003] The Chinese patent with the publication number CN221278852U discloses a double -layer fire -resistant heat preservation air pipe, which comprises an outer air pipe, the inside of the outer air pipe is sleeved with an inner air pipe, the bottom of the outer air pipe and the inner air pipe is connected with a fixing ring, the upper end of the outer air pipe is threadedly sleeved with a compaction ring, the compaction ring is movably sleeved on the outside of the inner air pipe, a plurality of aluminium silicate heat preservation sleeves are filled between the outer air pipe and the inner air pipe, and the bottom of the compaction ring is rotatably connected with an extrusion blocking ring. The heat preservation pipe fills the aluminium silicate heat preservation sleeve between the double -layer steel pipes to enhance the heat preservation effect, but due to the different sizes of the heat preservation pipes and the inherent characteristics, the corresponding heat preservation sleeve sizes are different, and the pre -processing cutting and pressing need to be carried out according to the size of the air pipe, and the production is relatively cumbersome.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a double -faced steel sheet structure fire -resistant air pipe with aluminium silicate cotton sandwiched in the middle, which solves the problems in the background art.

[0006] To solve the above technical problems, the basic concept of the technical scheme of the utility model is:

[0007] A double -faced steel sheet structure fire -resistant air pipe with aluminium silicate cotton sandwiched in the middle, which comprises: an outer steel pipe, a filling interlayer is arranged on the inner side of the outer steel pipe, an inner steel pipe is arranged on the inner side of the filling interlayer, square holes and long strip holes are formed in the filling interlayer, the filling interlayer is separated by the long strip holes connected between the square holes, a plurality of blocky fire -resistant cottons are installed in the square holes, and strip -shaped fire -resistant cottons are installed in the long strip holes.

[0008] Optionally, the top and tail of the outer steel pipe and the inner steel pipe are provided with a connecting ring, the connecting ring is symmetrically and fixedly connected with a fixed ring on the side surface, the top fixed ring is provided with a hanging groove on both sides of the top, and the bottom fixed ring is fixedly connected with a hook on both sides of the bottom.

[0009] Optionally, the two hooks are opposite in direction, and the hanging groove is provided with a stopper on the surface of the connecting ring in the corresponding direction.

[0010] Optionally, the block-shaped refractory cotton and the strip-shaped refractory cotton are made of silico-aluminate cotton.

[0011] Optionally, the outermost circle and the innermost circle of the connecting ring are protruded inward with stoppers, and the outer steel pipe and the inner steel pipe are clamped and fixed on the stoppers.

[0012] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0013] 1. The intermediate double-face steel plate structure refractory air duct filled with silico-aluminate refractory cotton through the multiple holes in the interlayer, without changing the size of the refractory cotton according to the diameter of the refractory air duct, thereby reducing the production cost of the refractory cotton and further reducing the overall cost.

[0014] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of the present application;

[0017] Figure 2 It is a sectional view of the filling interlayer of the structure of the present application;

[0018] Figure 3 It is a bottom schematic diagram of the structure of the present application;

[0019] Figure 4 It is a sectional view of the block-shaped refractory cotton of the present application.

[0020] In the drawings, the components represented by each number are listed as follows:

[0021] Outer steel pipe 1; inner steel pipe 2; filling interlayer 3; block-shaped refractory cotton 301; strip-shaped refractory cotton 302; connecting ring 4; fixed ring 401; hanging groove 402; hook 403.

[0022] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] The present application will now be further described in detail with reference to the accompanying drawings.

[0024] Please refer to Figures 1-4 It is shown that in the present embodiment, a double-face steel plate structure fire-resistant air duct with intermediate sandwiched aluminum silicate cotton is provided, which comprises an inner steel pipe and an outer steel pipe.

[0025] The application of an aspect of the present embodiment is: a double-face steel plate structure fire-resistant air duct with intermediate sandwiched aluminum silicate cotton. It should be noted that all electrical equipment involved in the present application can be powered by a battery or an external power source.

[0026] As Figure 2 shown, the filling interlayer 3 of the present embodiment is divided into two parts by square holes and long strip-shaped holes, a plurality of block-shaped fire-resistant cotton 301 is placed in the square holes, the block-shaped fire-resistant cotton 301 is processed and pressed into a fixed size in advance, and the long strip-shaped holes connected between the square holes are blocked by filling strip-shaped fire-resistant cotton 302. In this way, the heat transfer between the outer steel pipe 1 and the inner steel pipe 2 must pass through the fire-resistant cotton in the filling interlayer 3, and the heat resistance of the fire-resistant cotton insulates the internal and external heat. For air ducts of different sizes, the pipe wall thickness, i.e. the distance between the outer steel pipe 1 and the inner steel pipe 2, is the same, and the filling interlayer 3 and the filling hole size are consistent. Increasing the number of fire-resistant cotton to increase the diameter of the filling interlayer, the fixed-size block-shaped fire-resistant cotton 301 and the strip-shaped fire-resistant cotton 302 can be filled without the need to re-customize the size of the fire-resistant cotton.

[0027] As Figure 4 shown, the top and bottom connection rings 4 of the present embodiment have different structures, one has a hook 403, and the other has a hanging groove 402. By aligning the hooks 403 of the two air ducts with the hanging grooves 402, rotating the two fixed rings 401 to align, and fixing the hooks 403 into the stop blocks in the hanging grooves 402, the two fixed rings 401 are locked and fixed, thereby fixing and connecting the two air ducts.

[0028] As Figure 2 shown, the outer steel pipe 1 and the inner steel pipe 2 of the present embodiment hold the filling interlayer 3, and after combination, they are inserted between the two stop blocks at one end of the connection ring 4, and the front and rear connection rings 4 are fixed by adhering to the steel pipe and the interlayer at both ends.

[0029] As Figure 1As shown, the aluminum silicate cotton of the embodiment has low thermal conductivity, low heat capacity, stable chemical properties, sound absorption, no corrosion and other characteristics, so that the temperature insulation effect of the air duct is stronger.

[0030] Embodiment 1:

[0031] In the embodiment, a plurality of holes are arranged in the filling interlayer 3 between the outer steel pipe 1 and the inner steel pipe 2 to fill the aluminum silicate fireproof cotton of a fixed size, and the block-shaped fireproof cotton 301 and the strip-shaped fireproof cotton 302 are used to replace the ring-shaped fireproof cotton which is previously pressed and formed, so that the size of the corresponding fireproof cotton does not need to be changed according to the change of the diameter of the fireproof air duct, thereby reducing the production cost of the fireproof cotton and further reducing the overall cost.

[0032] Embodiment 2:

[0033] In the embodiment, the fireproof cotton in the filling interlayer 3 is aluminum silicate cotton, which has low thermal conductivity, low heat capacity, stable chemical properties, sound absorption, no corrosion and other characteristics, and is clamped by the inner and outer steel pipes, so that the temperature insulation effect of the air duct is stronger.

[0034] The utility model is not limited to the above-mentioned embodiment, anyone should know the structural change made under the inspiration of the utility model, any technical scheme with the same or similar to the utility model falls into the protection scope of the utility model, and the utility model is not described in detail. Technical, shape, structure part is known technology.

Claims

1. A double-skin steel duct structure fire resistant duct with intermediate sandwich of aluminium silicate wool, characterised in that, Include: The outer steel pipe (1) is provided with a filling interlayer (3) inside, the filling interlayer (3) is provided with an inner steel pipe (2) inside, square holes and long strip holes are opened in the filling interlayer (3), the square holes are connected by long strip holes and are separated from each other, a plurality of block-shaped fireproof cottons (301) are mounted in the square holes, and strip-shaped fireproof cottons (302) are mounted in the long strip holes.

2. A double skin steel ductwork of claim 1, characterised in that, The outer steel pipe (1) and the inner steel pipe (2) are provided with a connecting ring (4) at the top and the tail, the connecting ring (4) is fixedly connected with a fixed ring (401) on the side surface, hanging grooves (402) are formed on the top of the fixed ring (401) on both sides, hooks (403) are fixedly connected on the bottom of the fixed ring (401) on both sides, and the hooks (403) can be embedded in the hanging grooves (402).

3. A double skin steel duct lined with silicate-wool according to claim 2, characterized in that The directions of the two hooks (403) are opposite, and the hanging grooves (402) are provided with stop blocks on the surface of the connecting ring (4) in the corresponding direction.

4. A double skin steel ductwork construction sandwiching silicate- based aluminium silicate wool according to claim 1, characterised in that, The block-shaped fireproof cotton (301) and the strip-shaped fireproof cotton (302) are made of silico-aluminate cotton.

5. A double skin steel duct lined with silicate cotton according to claim 2, characterized in that, The outermost circle and the innermost circle of the connecting ring (4) are provided with stop blocks inwardly, and the outer steel pipe (1) and the inner steel pipe (2) are clamped and fixed on the stop blocks.

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