High-temperature axial flow fan plug body heat preservation structure

Abstract

The utility model discloses a high-temperature axial flow fan plug body heat preservation structure which comprises a fan plug body, a fan panel and a supporting rod, a plurality of bolts are arranged below the fan panel, the bolts are connected with a Pyro block laid below the fan panel, a stainless steel skin is arranged below the Pyro block, the stainless steel skin is arranged on the outer side of the fan plug body in a sleeved mode in a conical shape, and the supporting rod is connected with the Pyro block. The lower end of the stainless steel skin is connected with the supporting rod, a first-layer blanket and a second-layer blanket are arranged on the inner side of the stainless steel skin, the second-layer blanket is arranged on the outer side of the fan plug body in a wrapping mode, and the first-layer blanket is arranged on the outer side of the second-layer blanket in a wrapping mode. The utility model has the beneficial effects that the Pyro block is used as a heat insulation layer, so that the fan panel is not in direct contact with the stainless steel panel, heat conduction is avoided, and local high temperature of the fan panel is avoided; the Pyro block is fixed through the bolt, installation and replacement are convenient, time and labor are saved, and an original plug body cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a plug body heat preservation structure of a high-temperature axial flow fan. Background Art

[0002] Axial flow fans are a type of machine used for ventilation, air exchange and cooling, and are usually used in large places such as factories, shopping malls, and restaurants. They inhale gas from one end through rotating blades and then discharge the gas through axial discharge. They are often used for ventilation in balconies, kitchens, bathrooms, and other places.

[0003] High-temperature axial flow fans are often used in industrial furnaces, such as high-temperature roasting furnaces, double-chamber furnaces for scrap aluminum, etc. The working conditions of high-temperature axial flow fans used in such furnaces are very harsh. Since the temperature in the furnace is very high, the requirements for the plug insulation structure of the high-temperature axial flow fan used are higher. The commonly used plug insulation structure now is to wrap the insulation cotton with a stainless steel skin on the outside to form an insulation layer to achieve a heat insulation effect. However, the stainless steel skin in this structure needs to be welded to the fan panel. The stainless steel skin is in direct contact with the high-temperature gas in the furnace, and the temperature is relatively high. Stainless steel has a good thermal conductivity, which makes the temperature of the contact part between the fan panel and the skin relatively high, resulting in a high local temperature on the outside of the fan. After long-term use, if the insulation effect is reduced and the insulation structure needs to be replaced, it is necessary to cut off the welded stainless steel skin, replace the internal insulation cotton, and then re-weld it. The steps are cumbersome, time-consuming and labor-intensive. For example, a new type of high-temperature fan plug insulation structure disclosed in patent publication number CN215566870U has an outer skin in direct contact with the plug body panel. The high temperature on the outer skin will be directly transferred to the fan panel, causing the local temperature of the fan panel to be too high, posing a safety hazard, and the filler in the outer skin is troublesome to replace. Utility Model Content

[0004] The purpose of the utility model is to provide a high-temperature axial flow fan plug insulation structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature axial flow fan plug body insulation structure, comprising a fan plug body, a fan panel, and a support rod, a plurality of bolts are provided under the fan panel, and the plurality of bolts are connected with a Pyro block layered under the fan panel, a stainless steel skin is provided under the Pyro block, the stainless steel skin is conically sleeved on the outside of the fan plug body, the lower end of the stainless steel skin is connected to the support rod, a first layer of carpet and a second layer of carpet are provided on the inner side of the stainless steel skin, the second layer of carpet is wrapped around the outside of the fan plug body, and the first layer of carpet is wrapped around the outside of the second layer of carpet.

[0006] Further preferably, a first interlayer blanket is provided between the fan panel and the Pyro block, which has the effects of anti-vibration, sound absorption and heat preservation, and is convenient for replacing the Pyro block.

[0007] Further preferably, the Pyro blocks are multiple blocks, a gap is provided between two adjacent Pyro blocks and a second interlayer blanket is provided in the gap, and the two adjacent Pyro blocks are connected by a U-shaped fork to achieve connection between adjacent Pyro blocks.

[0008] Further preferably, the second interlayer blanket in the gap between two adjacent Pyro blocks is at least one layer, and the second interlayer blanket is used to fill the gap between the Pyro blocks to reduce heat transfer while allowing the Pyro blocks to deform into the gap.

[0009] Further preferably, a plurality of the bolts are evenly distributed below the fan panel, each of the bolts is covered with a third interlayer blanket, and adhesive is coated on both outer sides of the third interlayer blanket to ensure the installation firmness of the Pyro block.

[0010] Further preferably, the first carpet layer is one layer, the second carpet layer is multiple layers, and the thickness of the second carpet layer is greater than that of the first carpet layer, so as to ensure the thermal insulation and vibration resistance of the fan plug body part wrapped by the stainless steel skin.

[0011] Further preferably, the lower surface of the Pyro block is flat and coated with a hardener, so that the Pyro block is more resistant to airflow erosion and reduces downward deformation of the Pyro block.

[0012] Further preferably, a plurality of ribs are evenly arranged along the circumference of the outer side of the fan plug body, and surfaces of the ribs in contact with the pyro blocks are coated with adhesive.

[0013] Further preferably, thermal insulation cotton is filled between the multiple layers of the second carpet.

[0014] Further preferably, the bolts are welded to the fan panel to ensure that the bolts are firmly fixed.

[0015] Beneficial effects: The utility model provides a thermal insulation structure for a high-temperature axial flow fan plug, which arranges a Pyro block between the fan panel and the stainless steel skin. The Pyro block is used as a thermal insulation layer to prevent the fan panel from directly contacting the stainless steel panel, thereby avoiding heat conduction, avoiding local high temperature of the fan panel, and avoiding safety hazards. The Pyro block is fixed by bolts, which is convenient to install and replace, saving time and effort, and will not damage the original plug body. By arranging the first layer of carpet and the second layer of carpet in the stainless steel skin, the thermal insulation effect of the part covered by the stainless steel skin is ensured, reducing heat transfer to the fan plug body, while providing anti-vibration and noise reduction capabilities to ensure stable operation of the axial flow fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A schematic cross-sectional view of the heat preservation structure of the high-temperature axial flow fan plug disclosed in the embodiment of the utility model

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0018] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0019] Figure numbers: 1-fan plug body, 2-fan panel, 3-Pyro block, 4-stainless steel skin, 5-support rod, 6-bolt, 7-first interlayer blanket, 8-first layer of blanket, 9-second layer of blanket, 10-U-shaped fork, 11-second interlayer blanket, 12-third interlayer blanket, 13-rib plate. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1-3 As shown, a high-temperature axial flow fan plug insulation structure is an important component of the high-temperature axial flow fan and can prevent the high temperature in the furnace from being transmitted to the outside. The plug insulation structure includes a fan plug 1, a fan panel 2, and a support rod 5. A plurality of bolts 6 are provided below the fan panel 2. The plurality of bolts 6 are connected to a Pyro block 3 layered below the fan panel 2. A stainless steel skin 4 is provided below the Pyro block 3. The stainless steel skin 4 is conically sleeved on the outside of the fan plug 1. The lower end of the stainless steel skin 4 is connected to the support rod 5. A first layer of blanket 8 and a second layer of blanket 9 are provided on the inner side of the stainless steel skin 4. The second layer of blanket 9 is wrapped around the outside of the fan plug 1, and the first layer of blanket 8 is wrapped around the outside of the second layer of blanket 9. Among them, the Piro block 3, i.e., the Piro block fiber module, has uniform compressibility and good thermal efficiency, and has extremely high classification temperature and bulk density. The Piro block 3 forms a heat insulation layer, which isolates the stainless steel skin 4 from the fan panel 2, preventing the stainless steel skin 4 from directly contacting the fan panel 2, thereby isolating the temperature of the stainless steel skin 4, preventing the high temperature on the stainless steel skin 4 that is in direct contact with the high-temperature gas in the furnace from being transferred to the fan panel 2, and avoiding heat loss through the fan panel 1, achieving a heat preservation effect, and avoiding local high temperature of the fan panel 1. The bolt 6 is used for connecting and fixing the Piro block 3, and the first layer of blanket 8 and the second layer of blanket 9 are arranged between the fan plug body 1 and the stainless steel skin 4, which can play the role of heat insulation, heat preservation and shock absorption, ensure the stable operation of the axial flow fan, and prevent the heat on the stainless steel skin 4 from being transferred to the fan plug body 1, achieving a heat preservation effect.

[0022] In the present application, a first interlayer blanket 7 is provided between the fan panel 2 and the Piro block 3. The first interlayer blanket 7 can play a role in shock absorption and sound insulation, increase friction, ensure the installation firmness of the Piro block 3, and allow the Piro block 3 to deform. It also has a certain heat insulation effect and can facilitate the replacement of the Piro block 3. There are multiple Piro blocks 3, and a gap is provided between two adjacent Piro blocks 3, and a second interlayer blanket 11 is provided in the gap. The two adjacent Piro blocks 3 are connected by a U-shaped fork 10. By providing a gap between two adjacent Piro blocks 3, there is a deformation space for the Piro blocks 3, the second interlayer blanket 11 plays a heat insulation effect, and the U-shaped fork 10 realizes the connection between adjacent Piro blocks 3. In the present application, the thickness of the first interlayer blanket 7 and the second interlayer blanket 11 are both 25 mm, there are two Piro blocks 3, and the two Piro blocks 3 are symmetrically arranged below the fan panel 2. Two gaps are provided on each Piro block 3, and the gaps are also filled with a second interlayer blanket. The second interlayer blanket 11 in the gap between two adjacent Pyro blocks 3 is at least one layer, and in the present application, two layers, to ensure that the gap between the two Pyro blocks 3 and the gap on the Pyro blocks 3 are filled.

[0023] In the present application, multiple bolts 6 are evenly arranged below the fan panel 2, and each bolt 6 is covered with a third interlayer blanket 12, and the outer sides of the third interlayer blanket 12 are coated with adhesive. In the present application, six bolts 6 are used to fix the Piro block 3 to ensure that the Piro block 3 is installed firmly. The bolts 6 facilitate the installation and replacement of the Piro block 3, and the installation and replacement are faster, saving time and effort. The third interlayer blanket 12 can strengthen the connectivity between the Piro block 3 and the bolts 6, ensuring that the Piro block 3 is installed firmly.

[0024] In the present application, the first layer of blanket 8 is a single layer, and the second layer of blanket 9 is a multi-layer layer. The thickness of the second layer of blanket 9 is greater than that of the first layer of blanket 8, which can effectively ensure the heat insulation and thermal insulation effect of the stainless steel skin 4 on the fan plug body 1. The multi-layer second layer of blanket 9 is filled with thermal insulation cotton, which can further enhance the thermal insulation effect and prevent the high temperature in the furnace from being transmitted to the outside. Among them, the thickness of the first layer of blanket 8 is 25mm, the thickness of the second layer of blanket 9 is 50mm, the second layer of blanket 9 wraps the side part of the fan plug body 1 in four layers, and the second layer of blanket 9 wraps the bottom part of the fan plug body 1 in five layers. The multi-layer second layer of blanket 9 can provide thermal insulation, vibration resistance, vibration reduction, sound insulation and other effects, and can ensure the stable operation of the fan plug body 1. The lower surface of the Piro block 3 is flat and coated with a hardener, which can harden the surface of the Piro block 3, making the Piro block 3 more resistant to airflow erosion, and at the same time, preventing the Piro block 3 from deforming downward.

[0025] In the present application, a plurality of ribs 13 are evenly arranged along the circumference of the outer side of the fan plug body 1, and the ribs 13 can strengthen the structural strength of the fan plug body 1 and strengthen the connection firmness between the fan plug body 1 and the fan panel and the stainless steel skin 4; the surfaces of the ribs 13 in contact with the Piro blocks 3 are coated with adhesive to improve the installation firmness of the Piro blocks 3 and improve the structural strength of the overall insulation structure of the fan plug body 1.

[0026] In the present application, the bolts 6 are welded to the fan panel 2 to improve the fixing strength of the bolts 6; other fixing methods may also be used, such as screw connection or other fixing methods; and the stainless steel skin 4 and the fan support rod 5 are welded to ensure the installation firmness of the stainless steel skin 4, and this part of the stainless steel skin 4 does not contact the fan panel 1, which can avoid heat conduction.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A high-temperature axial flow fan plug insulation structure, comprising a fan plug (1), a fan panel (2), and a support rod (5), characterized in that: A plurality of bolts (6) are provided below the fan panel (2), and the plurality of bolts (6) are connected to a Pyro block (3) layered below the fan panel (2). A stainless steel skin (4) is provided below the Pyro block (3), and the stainless steel skin (4) is conically sleeved on the outside of the fan plug body (1). The lower end of the stainless steel skin (4) is connected to the support rod (5), and a first layer of carpet (8) and a second layer of carpet (9) are provided on the inner side of the stainless steel skin (4), and the second layer of carpet (9) is wrapped around the outside of the fan plug body (1), and the first layer of carpet (8) is wrapped around the outside of the second layer of carpet (9).

2. A high-temperature axial flow fan plug insulation structure according to claim 1, characterized in that: A first interlayer blanket (7) is provided between the fan panel (2) and the Pyro block (3).

3. A high-temperature axial flow fan plug insulation structure according to claim 2, characterized in that: The Pyro blocks (3) are multiple blocks, a gap is provided between two adjacent Pyro blocks (3), a second interlayer blanket (11) is provided in the gap, and the two adjacent Pyro blocks (3) are connected by a U-shaped fork (10).

4. A high-temperature axial flow fan plug insulation structure according to claim 3, characterized in that: The second interlayer blanket (11) in the gap between two adjacent Pyro blocks (3) is at least one layer.

5. The high-temperature axial flow fan plug insulation structure according to claim 1, characterized in that: A plurality of the bolts (6) are evenly distributed below the fan panel (2), and each of the bolts (6) is covered with a third interlayer blanket (12), and the outer sides of the third interlayer blanket (12) are coated with adhesive.

6. A high-temperature axial flow fan plug insulation structure according to claim 1, characterized in that: The first layer of carpet (8) is a single layer, the second layer of carpet (9) is a multi-layer layer, and the thickness of the second layer of carpet (9) is greater than that of the first layer of carpet (8).

7. A high-temperature axial flow fan plug insulation structure according to claim 1, characterized in that: The lower surface of the Pyro block (3) is flat and coated with a hardener.

8. The high-temperature axial flow fan plug insulation structure according to claim 1, characterized in that: The outer side of the fan plug body (1) is evenly provided with a plurality of ribs (13) along its circumference, and the surfaces of the ribs (13) in contact with the pyro blocks (3) are coated with adhesive.

9. A high-temperature axial flow fan plug insulation structure according to claim 6, characterized in that: The spaces between the multiple layers of the second carpet (9) are filled with thermal insulation cotton.

10. The high-temperature axial flow fan plug insulation structure according to claim 1, characterized in that: The bolts (6) are welded to the fan panel (2).

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