Air supply mechanism and toughening furnace

Abstract

The utility model provides an air supply mechanism and a toughening furnace, the air supply mechanism comprises an axial flow fan and an air bellow, the axial flow fan comprises an air inlet and an air outlet, and environmental gas flows into the axial flow fan through the air inlet and is exhausted through the air outlet; the air bellow is communicated with the axial flow fan through the air outlet; the axial flow fan and the air bellow are arranged in a stacked mode in the vertical direction, and at least part of the axial flow fan is installed above the air bellow, and the top of the axial flow fan is installed at the top of the air bellow so as to raise the height of the air inlet in the vertical direction. The toughening furnace comprises an air supply mechanism and a furnace body, the furnace body is provided with a quenching section air grid, and the quenching section air grid is communicated with the air supply outlet of the air bellow. The air supply mechanism and the toughening furnace provided by the utility model have the advantage that the occupied area of equipment is reduced, and meanwhile, the possibility of sucking pollutants in the air is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of air supply equipment, and more specifically, to an air supply mechanism and a tempering furnace. Background Art

[0002] Boilers, especially industrial boilers, need to be used in conjunction with blast equipment and induced draft equipment. Taking tempered glass processing as an example, when the tempering furnace is working, air supply equipment is required to deliver fresh air to the inside of the boiler. In the related art, the commonly used air supply equipment is composed of a bellows and a horizontal fan. The above-mentioned equipment occupies a large area during installation, resulting in low utilization of the production space. In addition, since the horizontal fan needs to be installed on the ground or on a work platform, the air inlet of the fan is close to the ground, which makes it very easy for the fan to transport pollutants near the ground into the boiler when working, thereby contaminating the glass in the boiler, causing the tempered glass to be unqualified, and seriously affecting the production efficiency of tempered glass.

[0003] In order to solve the above problems, it is necessary to develop a new air supply mechanism and a tempering furnace having the air supply mechanism. Utility Model Content

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, the embodiments of the present application propose an air supply mechanism and a tempering furnace, which can effectively reduce the possibility of sucking pollutants in the air, while reducing the floor space of the equipment, thereby achieving effective use of space.

[0006] The air supply mechanism provided according to the present application includes an axial flow fan and a bellows, the axial flow fan includes an air inlet and an air outlet, the ambient gas flows into the axial flow fan through the air inlet and is discharged through the air outlet; the bellows is connected to the axial flow fan through the air outlet; the axial flow fan and the bellows are arranged in a vertical stack and at least a portion of the axial flow fan is installed on the top of the bellows to raise the vertical height of the air inlet.

[0007] According to the air supply mechanism of the present application, the use of axial flow fans instead of traditional fans can effectively improve the air supply efficiency. At the same time, by stacking the axial flow fans and bellows up and down, the air inlet of the axial flow fans can be raised while reducing the overall floor space of the air supply mechanism. By adjusting the height of the axial flow fans to keep them away from the ground, the possibility of the axial flow fans sucking ground pollutants during operation can be reduced, which helps improve the processing efficiency and qualified rate of tempered glass. The bellows and axial flow fans stacked up and down can also effectively improve the utilization rate of the working space of the air supply mechanism.

[0008] Optionally, a filter element is provided on the axial flow fan, and the airflow filtered by the filter element is discharged into the wind box along the air outlet.

[0009] Optionally, the filter element is installed at the air inlet, and the airflow passing through the air inlet enters the axial flow fan after being processed by the filter element.

[0010] Optionally, the air inlet is formed on a circumferential side of the axial flow fan in the vertical direction.

[0011] Optionally, a connecting flange is arranged outside the air outlet, and the air outlet is connected to the bellows via the connecting flange.

[0012] Optionally, a driving component is disposed outside the axial flow fan, and the driving component is drivingly connected to the axial flow fan to drive the axial flow fan to start or stop.

[0013] Optionally, the driving assembly includes a motor, a coupling and a gearbox, the gearbox is in driving connection with the axial flow fan, and the coupling connects the motor and the gearbox.

[0014] Optionally, a reinforcement platform is further provided on the periphery of the axial flow fan, and the drive assembly is fixedly mounted on the reinforcement platform.

[0015] Optionally, the reinforcement platform is fixedly arranged on the top surface of the bellows; or, the reinforcement platform is fixedly arranged on the peripheral side of the bellows.

[0016] The tempering furnace provided in the present application comprises an air supply mechanism and a furnace body, wherein the air supply mechanism is any of the air supply mechanisms described above; a rapid cooling section air grille is provided on the furnace body, and the rapid cooling section air grille is connected to the air supply port of the wind box.

[0017] According to the tempering furnace of the present application, the air supply port of the wind box is connected to the quenching section wind grid of the furnace body, which can achieve uniform quenching and cooling of the tempered glass, thereby improving the production quality and production efficiency of the tempered glass.

[0018] The beneficial effects of the air supply mechanism and tempering furnace provided in the present application are as follows: compared with the related art, the air supply mechanism in the present application adopts an axial flow fan to greatly increase the air supply volume, and at the same time, by installing the axial flow fan above the bellows, the occupation of the ground space by the air supply mechanism can be reduced while raising the air inlet to reduce the suction of pollutants, so that the equipment has a higher space utilization rate; in addition, the air supply mechanism also achieves filtering treatment of the airflow by arranging a filter element at the air inlet of the axial flow fan, and the airflow after the above treatment is transported to the furnace body of the tempering furnace through the bellows, thereby achieving the technical effect of improving the production quality and production efficiency of tempered glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the structure of the air supply mechanism provided in the embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of an air supply mechanism provided in another embodiment of the present application;

[0022] Figure 3 A schematic structural diagram of an air supply mechanism provided in yet another embodiment of the present application.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Axial flow fan; 11. Air inlet; 12. Air outlet; 2. Bellows; 21. Air supply outlet; 3. Filter element; 4. Connecting flange; 5. Drive assembly; 51. Motor; 52. Coupling; 53. Gearbox; 6. Reinforcement platform. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Please also read Figure 1 and Figure 3 , the air supply mechanism and tempering furnace provided in the embodiment of the present application are now described.

[0033] An air supply mechanism provided in a certain embodiment of the present application can effectively reduce the possibility of sucking pollutants in the air, while reducing the footprint of the equipment, thereby achieving effective use of space.

[0034] The air supply mechanism mainly includes an axial flow fan 1 and a wind box 2, wherein the number of the axial flow fan 1 is at least one. The axial flow fan 1 includes an air inlet 11 and an air outlet 12, and the ambient gas flows into the axial flow fan 1 through the air inlet 11 and is discharged through the air outlet 12; the wind box 2 is connected to the axial flow fan 1 through the air outlet 12, and the gas sucked at the axial flow fan 1 can be discharged into the wind box 2 through the air outlet 12; the axial flow fan 1 and the wind box 2 are arranged in a vertical stack, and at least part of the axial flow fan 1 is installed on the top of the wind box 2 to raise the height of the air inlet 11 in the vertical direction.

[0035] The air supply mechanism uses an axial flow fan 1 to replace a traditional fan, which can effectively improve the air supply efficiency. At the same time, by stacking the axial flow fan 1 and the bellows 2 up and down, the air inlet 11 of the axial flow fan 1 can be raised while reducing the overall floor space of the air supply mechanism. By adjusting the height of the axial flow fan 1 to keep it away from the ground, the possibility of the axial flow fan 1 sucking ground pollutants during operation is reduced, which helps improve the processing efficiency and qualified rate of tempered glass. The bellows 2 and axial flow fan 1 stacked up and down can also effectively improve the utilization rate of the workspace of the air supply mechanism.

[0036] In addition to the above effects, the wind box 2 can also adjust the direction and velocity of the air flow. By adjusting the shape of the wind box 2 and the direction of the air supply port 21 formed on the wind box 2, the direction and velocity of the air flow can be changed to a certain extent and within a certain range, so that the gas discharged through the air supply port 21 can better meet the processing requirements of tempered glass.

[0037] Specifically, the air inlet 11 and the air outlet 12 are both formed on the outer shell of the axial flow fan 1, and the impeller and the like of the axial flow fan 1 are located inside the outer shell.

[0038] In some embodiments, the housing of the axial flow fan 1 and the wind box 2 are split structures, and the two can be fixedly connected by welding or bolt connection, flange connection, etc.

[0039] It should be noted that a certain safety device needs to be arranged outside the air inlet 11 to prevent safety accidents. The safety device can be a safety net or a safety cover or other safety devices. The structure and installation method of the safety device are conventional technologies and will not be repeated here.

[0040] In order to further reduce the possibility of the axial flow fan 1 sucking in pollutants (such as dust, etc.) in the air when it is working, and ensure the cleanliness of the airflow sent into the furnace body through the axial flow fan 1 and the bellows 2, in another embodiment of the present application, a filter element 3 is provided on the axial flow fan 1, and the ambient gas will be continuously sent into the bellows 2 through the exhaust port 12 as the axial flow fan 1 works to filter the ambient gas.

[0041] The filter element 3 can be used to filter the gas to remove floating impurities such as sinking impurities in the gas. The filter element 3 includes a shell and a filter medium, wherein the shell is arranged around the circumference of the filter medium. The filter medium can be any one or more of paper, cloth, activated carbon and other materials, and can filter out particulate matter and gas molecules in the air by screening and adsorption, thereby filtering the air; the shell plays a role in supporting and protecting the filter medium, and can also cooperate with the relevant installation structure to realize the installation of the filter medium.

[0042] When selecting or designing the filter element 3, it is necessary to comprehensively consider factors such as filtration efficiency, resistance, and service life, and reasonably select the filter medium material and design the shell structure to improve the performance of the filter element 3 and ensure that it can operate effectively for a long time.

[0043] The structural design of the filter element 3 and the selection of the filter medium belong to the prior art and will not be described in detail here.

[0044] In order not to affect the continuous operation of the axial flow fan 1 and to facilitate the replacement of the filter element 3, in another embodiment of the present application, the filter element 3 is installed at the air inlet 11, such as Figure 1 At this time, under the suction operation of the axial flow fan 1, when the ambient gas flows into the axial flow fan 1 through the air inlet 11, it will also flow through the filter element 3 and be filtered.

[0045] In addition to filtering the airflow and preventing the airflow containing pollutants from entering the wind box 2 and the furnace body, this structure can also effectively prevent pollutants in the air from entering the axial flow fan 1 and polluting the inside of the axial flow fan 1, thereby ensuring the cleanliness of the axial flow fan 1, preventing the axial flow fan 1 from being affected by pollutants and reducing its working efficiency, and preventing pollutants from affecting the air volume of the axial flow fan 1.

[0046] In order to ensure that the filter element 3 always has a good filtering effect, it needs to be cleaned, maintained or replaced regularly. Compared with the method of arranging the filter element 3 inside the axial flow fan 1 or at the exhaust port 12 of the axial flow fan 1, the above-mentioned method of arranging the filter element 3 at the air inlet 11 of the axial flow fan 1 can make the maintenance and replacement of the filter element 3 simpler, and can also effectively reduce the maintenance frequency of the axial flow fan 1. In addition, by raising the air inlet 11, the overall structural design of the air supply mechanism is more reasonable, further reducing the difficulty of later repair, maintenance and replacement of the filter element 3 of the device.

[0047] In another embodiment of the present application, the air inlet 11 is formed on the circumferential side of the axial flow fan 1 in the vertical direction. Figure 1 Taking the angle shown as an example, the axis of the air inlet 11 is a horizontal line. Since the axial flow fan 1 is located on the top of the wind box 2, in order to achieve the connection between the axial flow fan 1 and the wind box 2, an opening structure connected to the exhaust port 12 of the axial flow fan 1 is formed on the top of the wind box 2. That is, the exhaust port 12 of the axial flow fan 1 is formed on the lower surface of the axial flow fan 1.

[0048] Specifically, a connecting flange 4 is provided outside the air outlet 12, and the air outlet 12 is connected to the wind box 2 via the connecting flange 4. Figure 1 As shown, a connecting flange 4 is provided between the axial flow fan 1 and the wind box 2, and the exhaust port 12 is connected to the wind box 2 through the connecting flange 4. The airflow generated by the axial flow fan 1 flows into the wind box 2 through the exhaust port 12 and the connecting flange 4.

[0049] The axial flow fan 1 needs to be driven by the drive assembly 5 when working, wherein the axis of the drive assembly 5 usually needs to be in the same straight line with the axis of the axial flow fan 1 to avoid unnecessary noise or vibration generated by the related equipment when working. Generally speaking, the above-mentioned drive assembly 5 can be arranged inside the housing of the axial flow fan 1, or outside the housing of the axial flow fan 1. In order to avoid the drive assembly 5 occupying the space inside the housing and affecting the normal flow of the airflow, in some embodiments, the above-mentioned drive assembly 5 is externalized, that is, the drive assembly 5 is arranged outside the housing of the axial flow fan 1, and the drive assembly 5 can be connected to the axial flow fan 1 to drive the axial flow fan 1 to start or stop.

[0050] Specifically, the driving assembly 5 includes a motor 51, a coupling 52 and a gearbox 53. Figure 1 As shown, the gearbox 53 is in driving connection with the axial flow fan 1 , and the coupling 52 connects the motor 51 and the gearbox 53 .

[0051] In another embodiment of the present application, a reinforcement platform 6 is further provided on the peripheral side of the axial flow fan 1 , and the driving assembly 5 is fixedly mounted on the reinforcement platform 6 .

[0052] Specifically, the reinforcement platform 6 may refer to a mounting seat or a mounting platform fixedly mounted on the top of the bellows 2, such as Figure 1 Alternatively, the reinforcement platform 6 may also refer to the top of the bellows 2, in which case the top of the bellows 2 may be formed with a step structure or the like to form a reinforcement platform 6 for mounting the drive assembly 5. The drive assembly 5 may be coaxially connected to the axial flow fan 1 through the reinforcement platform 6 and fixed above the bellows 2.

[0053] Alternatively, in other embodiments, the reinforcement platform 6 may be a fixed member arranged on the side of the wind box 2, such as a wall or a column. The fixed member is a rigid structure with a strong load-bearing capacity, and can be used to fix and install related equipment. The drive assembly 5 can be fixedly installed on the rigid fixed member through a fixed installation structure disclosed in the relevant technology (such as expansion bolts, etc.), and realize a coaxial connection with the axial flow fan 1.

[0054] The structural design of the above-mentioned fixing member can also reduce the space occupied by the driving assembly 5 on the top of the bellows 2, leaving more space on the top of the bellows 2 for arranging the axial flow fan 1, further improving the space utilization of the air supply mechanism.

[0055] Considering that the air supply volume of a single axial flow fan 1 is relatively small, it may not be able to meet the air volume requirements of downstream related equipment. In another embodiment of the present application, the number of the above-mentioned axial flow fans 1 can be set to at least two and all axial flow fans 1 are arranged on the top of the wind box 2. When the number of axial flow fans 1 increases, the air volume supplied to the wind box 2 can be increased without changing the fan power, thereby increasing the air volume supplied by the wind box 2 to the downstream related equipment.

[0056] Taking the tempering furnace used for tempered glass processing as an example, the air volume supplied by the wind box 2 into the tempering furnace is increased, so that the circulation rate and circulation volume of the surface wind pressure of the tempered glass located in the furnace body can be increased. This effect can not only achieve uniform rapid cooling and cooling of the tempered glass, but also improve the cooling efficiency, avoid the problems of low cooling efficiency and uneven cooling in traditional devices, avoid the impact of structural damage caused by uneven cooling on the production of tempered glass, and effectively improve the production quality and production efficiency of tempered glass.

[0057] like Figure 2 As shown, from this angle, it can be seen that there are at least two axial flow fans 1 arranged side by side on the top surface of the wind box 2. At this time, the wind box 2 can supply the air volume supplied by multiple axial flow fans 1 to the downstream equipment. This embodiment can also improve the utilization rate of the upper space of the wind box 2.

[0058] It should be noted that, in order to meet the air volume requirement, the air inlets 11 of the above-mentioned axial flow fans 1 arranged side by side can face the same direction or different directions; in addition, the heights of the air inlets 11 of the above-mentioned axial flow fans 1 can be the same or different. This embodiment does not limit the directions and heights of the air inlets 11 of the above-mentioned different axial flow fans 1.

[0059] In another embodiment of the present application, the axis of the axial flow fan 1 is arranged along a vertical line. In this case, the air inlet 11 and the air outlet 12 of the axial flow fan 1 are arranged up and down along the vertical line. The air inlet 11 is formed at the top of the axial flow fan 1. Figure 3 shown. Figure 3 The structure of the driving component 5 is schematically drawn.

[0060] The upward arrangement of the air inlet 11 of the axial flow fan 1 can make the air inlet 11 further away from the ground (that is, the installation surface of the equipment) under the premise that the overall arrangement height of the axial flow fan 1 remains the same, so that the airflow formed by the operation of the axial flow fan 1 can be as far away from the ground as possible, reducing the possibility of ground pollutants being lifted up by the airflow and entering the axial flow fan 1.

[0061] In this embodiment, the number of the axial flow fans 1 is several, and the specific number and distribution method thereof can be adaptively adjusted according to parameters such as the size and shape of the wind box 2, which will not be elaborated here.

[0062] Compared with the related art, the air supply mechanism provided in the above embodiments can reduce the ground space occupied by the air supply mechanism by installing the axial flow fan 1 above the wind box 2 while raising the air inlet 11 to reduce the suction of pollutants, so that the device has a higher space utilization rate and greatly improves the air supply volume; in addition, the air supply mechanism also filters the airflow by arranging the filter element 3 at the air inlet 11 of the axial flow fan 1, thereby further purifying the airflow. The air supply mechanism has the advantages of occupying a small space and delivering a relatively clean airflow.

[0063] The above are only several preferred embodiments of the air supply mechanism. In practical applications, those skilled in the art can flexibly design the air supply mechanism as needed.

[0064] The present application also provides a tempering furnace, comprising an air supply mechanism and a furnace body, wherein the air supply mechanism is any of the air supply mechanisms described above; a quenching section air grille is provided on the furnace body, and the quenching section air grille is connected to the air supply port 21 of the wind box 2.

[0065] The air supply mechanism is used to supply air to the furnace body. Since the air supply port 21 of the wind box 2 is connected to the quenching section wind grid of the furnace body, the tempering furnace can achieve uniform quenching and cooling of the tempered glass through the air supply mechanism to improve the production quality and production efficiency of the tempered glass.

[0066] Specifically, the connection between the quenching section air grille and the air outlet 21 is connected and reinforced by a cloth bag. This structure is a prior art and will not be described in detail here.

[0067] The formation position and direction of the air outlet 21 of the wind box 2 need to be adaptively adjusted according to the relative position of the wind box 2 and the furnace body. Figure 1 As shown in the figure, the air supply port 21 of the bellows 2 is formed on one side of the bellows 2 in the circumferential direction.

[0068] There are multiple air supply ports 21 evenly arranged on a side wall of the wind box 2. The air flow is evenly transported to the quenching section of the furnace body through the air supply ports 21 to supply air for even quenching and cooling of the tempered glass.

[0069] Compared with the related art, the tempering furnace provided in the above-mentioned embodiments uses an air supply mechanism, which has the advantage of improving the cooling efficiency of tempered glass, avoiding the problems of low cooling efficiency and uneven cooling in traditional devices, and improving the production quality and efficiency of tempered glass.

[0070] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An air supply mechanism, characterized in that: include: An axial flow fan (1), the axial flow fan (1) comprising an air inlet (11) and an air outlet (12), ambient gas flows into the axial flow fan (1) through the air inlet (11) and is discharged through the air outlet (12); A bellows (2), the bellows (2) being connected to the axial flow fan (1) via the air outlet (12); The axial flow fan (1) and the wind box (2) are arranged in a vertical stack, and at least a portion of the axial flow fan (1) is installed on the top of the wind box (2) to raise the vertical height of the air inlet (11).

2. The air supply mechanism according to claim 1, characterized in that: The axial flow fan (1) is provided with a filter element (3), and the airflow filtered by the filter element (3) is discharged into the wind box (2) along the air outlet (12).

3. The air supply mechanism according to claim 2, characterized in that: The filter element (3) is installed at the air inlet (11), and the airflow passing through the air inlet (11) enters the axial flow fan (1) after being processed by the filter element (3).

4. The air supply mechanism according to any one of claims 1 to 3, characterized in that: The air inlet (11) is formed on the vertical circumferential side of the axial flow fan (1).

5. The air supply mechanism according to claim 1, characterized in that: A connecting flange (4) is arranged outside the air outlet (12), and the air outlet (12) is connected to the wind box (2) via the connecting flange (4).

6. The air supply mechanism according to claim 1, characterized in that: A drive assembly (5) is arranged outside the axial flow fan (1), and the drive assembly (5) is transmission-connected to the axial flow fan (1) to drive the axial flow fan (1) to start or stop.

7. The air supply mechanism according to claim 6, characterized in that: The driving assembly (5) comprises a motor (51), a coupling (52) and a gearbox (53); the gearbox (53) is drivingly connected to the axial flow fan (1); and the coupling (52) connects the motor (51) and the gearbox (53).

8. The air supply mechanism according to claim 6, characterized in that: A reinforcement platform (6) is also provided on the peripheral side of the axial flow fan (1), and the drive assembly (5) is fixedly mounted on the reinforcement platform (6).

9. The air supply mechanism according to claim 8, characterized in that: The reinforcement platform (6) is fixedly arranged on the top surface of the bellows (2); or, the reinforcement platform (6) is fixedly arranged on the peripheral side of the bellows (2).

10. A tempering furnace, characterized in that: include: An air supply mechanism, wherein the air supply mechanism is the air supply mechanism according to any one of claims 1 to 9; A furnace body is provided with a rapid cooling section air grille, and the rapid cooling section air grille is connected to the air supply port (21) of the wind box (2).

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