Brake disc nitriding fan cooling device

Abstract

The utility model discloses a brake disc nitriding treatment fan cooling device, including cooling tunnel furnace and the drum conveyer of traversing cooling tunnel furnace, the top bore of cooling tunnel furnace is installed with the air draught fan of being connected with the exhaust pipe, and the position of setting the through slot of cooling tunnel furnace front and back near the bottom is installed with the dust screen, and the inside fixed of cooling tunnel furnace is communicated with the air inlet guide groove of two dust screen corresponding position through slot. The utility model discloses from the bottom two sides air intake, and the flowing air of entering blows from below to above through air inlet guide groove and ventilation hole no.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive brake disc production equipment, specifically a fan cooling device for brake disc nitriding treatment. Background Technology

[0002] During use, automotive brake discs can experience vibrations and reduced smoothness during braking due to uneven material composition, poor manufacturing precision, thermal deformation, and rust. This noise is particularly noticeable in electric vehicles, which lack engine and transmission noise sources. Exposed to the air, brake discs are easily exposed to water during driving and car washes. Brake discs without rust-proofing are prone to corrosion. Braking heats the disc, causing thermal changes in the rust layer. Iron oxide reacts to form magnetite (Fe3O4), which adheres to the brake disc and is difficult to remove, resulting in uneven disc thickness and contributing to braking vibrations and noise.

[0003] Therefore, in the production process of brake discs, in addition to ensuring material uniformity and improving processing precision, it is also necessary to prevent rusting during use. After nitriding and carburizing treatment, a compound layer can be formed on the surface of the brake disc. This compound layer has a layered, close-packed hexagonal structure similar to graphite, exhibiting excellent wear resistance. Furthermore, due to the stable high pitting potential of the compound layer, it also has good corrosion resistance, thereby improving the rusting problem of the brake disc.

[0004] After undergoing nitriding and carbonization treatment, the brake discs are cooled in a cooling tunnel furnace. The brake discs are placed in baskets and conveyed into the cooling tunnel furnace on a roller conveyor. The brake discs are placed at equal intervals in the baskets, either horizontally or vertically, and are all placed vertically. However, in the existing cooling tunnel furnace, air is blown from both sides corresponding to the basket positions above the roller conveyor by blowers, and the air is exhausted from the top. Therefore, the sides of the brake discs are the windward side, which results in the brake discs at the bottom inside the basket having less contact with the flowing air than the brake discs at the top inside the basket, thus affecting the uniformity of the brake disc cooling. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a brake disc nitriding treatment fan cooling device, which solves the problem of uneven cooling of brake discs in existing cooling tunnel furnaces.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A cooling device for a brake disc nitriding fan includes a cooling tunnel furnace and a roller conveyor that runs horizontally through the cooling tunnel furnace. An induced draft fan connected to an exhaust pipe is installed at the top opening of the cooling tunnel furnace. Dust screens are installed at the positions of the through slots on the front and back of the cooling tunnel furnace near the bottom. An air inlet guide trough is fixed inside the cooling tunnel furnace, connecting the through slots at the corresponding positions of the two dust screens. Multiple vertical guide plates are fixed longitudinally at the top of the air inlet guide trough corresponding to the inner wall of the roller conveyor. Ventilation holes are evenly arranged at the top of the air inlet guide trough between adjacent guide plates. The cooling tunnel furnace has an exhaust guide trough vertically fixed to the top of the inner wall of the roller conveyor. Multiple horizontally arranged exhaust baffles are movably installed in the exhaust guide trough along the vertical direction. Ventilation holes are evenly arranged on the exhaust baffles.

[0007] Preferably, the cooling tunnel furnace has mounting slots on both the front and back sides, and the dustproof net is movably attached to the cooling tunnel furnace through the mounting slots.

[0008] Preferably, the plurality of the guide plates are arranged equidistantly along the longitudinal direction and symmetrically front to back. The vertical length of the guide plate located in the middle of the air inlet guide groove is greater than the vertical length of the guide plate near the dustproof net, and the vertical length of the guide plates decreases sequentially.

[0009] Preferably, the exhaust baffle is suspended from the top of the inner wall of the cooling tunnel furnace by a cable, and buffer pads are fixed on the inner walls of the exhaust guide groove at positions corresponding to the exhaust baffle.

[0010] Preferably, the plurality of exhaust deflectors are equidistantly arranged in the vertical direction, and the inner diameter and hole spacing of the second ventilation hole on the upper exhaust deflector are greater than the inner diameter and hole spacing of the second ventilation hole on the lower exhaust deflector, and the inner diameter and hole spacing decrease step by step.

[0011] Preferably, a heat insulation layer is fixed on the inner wall of the cooling tunnel furnace.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention introduces air intake from both sides of the bottom. The incoming airflow is blown upwards through the air intake guide groove and ventilation hole 1. The multi-layer exhaust baffles above can move slightly under the action of the suspension cable, causing the relative positions of the ventilation holes 2 of adjacent exhaust baffles to change randomly. This avoids the problem of a fixed and singular airflow path, making the contact rate between the brake discs placed vertically in different positions in the basket and the flowing air more uniform, thus improving the cooling uniformity. The exhaust fan draws air from the top. The exhaust fan draws air in, which makes the airflow gentler than the blower, resulting in better contact with the brake discs. This solves the problem of uneven cooling of brake discs in existing cooling tunnel furnaces. Attached Figure Description

[0013] Figure 1 This is a front view of the present utility model; Figure 2 This is a side view of the present invention; Figure 3 This is an internal side view of the cooling tunnel furnace of this utility model; Figure 4 This is an internal side view of the air inlet guide channel of this utility model; Figure 5 This is a front sectional view of the internal structure of the exhaust guide channel of this utility model.

[0014] In the diagram: 1. Cooling tunnel furnace; 2. Roller conveyor; 3. Exhaust fan; 4. Dustproof net; 5. Air inlet guide channel; 6. Guide plate; 7. Ventilation hole one; 8. Exhaust guide channel; 9. Exhaust baffle plate; 10. Ventilation hole two; 11. Mounting slot; 12. Suspension cable; 13. Buffer pad; 14. Thermal insulation layer. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-5 As shown, this utility model provides a technical solution: a cooling device for a brake disc nitriding fan, including a cooling tunnel furnace 1 and a roller conveyor 2 that runs horizontally through the cooling tunnel furnace 1. A heat insulation layer 14 is fixed on the inner wall of the cooling tunnel furnace 1. An induced draft fan 3 connected to an exhaust pipe is installed in the top opening of the cooling tunnel furnace 1. Dustproof nets 4 are installed at the positions of the through grooves on the front and back of the cooling tunnel furnace 1 near the bottom. Mounting grooves 11 are provided on both the front and back of the cooling tunnel furnace 1. The dustproof nets 4 are movably and snapped onto the cooling tunnel furnace 1 through the mounting grooves 11. The interior of the cooling tunnel furnace 1 is fixed with an air inlet guide trough 5 that connects the corresponding slots of two dustproof nets 4. The top of the inner wall of the air inlet guide trough 5 is fixed with multiple vertical guide plates 6 along the longitudinal direction. The multiple guide plates 6 are equidistant along the longitudinal direction and symmetrically arranged front and back. The vertical length of the guide plate 6 located in the middle of the air inlet guide trough 5 is greater than the vertical length of the guide plate 6 near the dustproof net 4, and the vertical length of the guide plate 6 decreases one by one. Ventilation holes 7 are evenly arranged at the top of the air inlet guide trough 5 between adjacent guide plates 6. The top of the inner wall of the cooling tunnel furnace 1 corresponding to the roller conveyor 2 is vertically fixed with an exhaust guide trough 8. Multiple horizontally arranged exhaust baffles 9 are movably installed in the exhaust guide trough 8 along the vertical direction. The multiple exhaust baffles 9 are equidistantly arranged along the vertical direction. The exhaust baffles 9 are suspended from the top of the inner wall of the cooling tunnel furnace 1 by a hanging cable 12. Buffer pads 13 are fixed on the inner walls of the exhaust guide trough 8 at the positions corresponding to the exhaust baffles 9. Ventilation holes 10 are evenly arranged on the exhaust deflector 9. The inner diameter and hole spacing of the ventilation holes 10 on the upper exhaust deflector 9 are larger than those on the lower exhaust deflector 9, and the inner diameter and hole spacing decrease step by step.

[0017] Working principle: The induced draft fan 3 draws air from the top, creating negative pressure inside the cooling tunnel furnace 1. This pressure drives the air from both sides below, through the dustproof net 4, into the air inlet guide trough 5. Guided step by step by multiple guide plates 6, the air flows upward through the ventilation holes 7, passing through the roller conveyor 2 and the basket containing the brake discs conveyed above it. The multiple exhaust baffles 9 in the upper exhaust guide trough 8 can move slightly under the action of the suspension cable 12, causing the relative positions of the ventilation holes 10 of adjacent exhaust baffles 9 to change randomly. This avoids a fixed and singular airflow path, making the contact rate between the brake discs placed vertically in different positions in the basket and the flowing air more uniform, resulting in better contact with the brake discs and improved cooling uniformity.

[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling device for a brake disc nitriding fan, comprising a cooling tunnel furnace (1) and a roller conveyor (2) that transversely penetrates the cooling tunnel furnace (1), characterized in that: The top opening of the cooling tunnel furnace (1) is equipped with an induced draft fan (3) connected to the exhaust pipe. Dustproof nets (4) are installed on the front and back of the cooling tunnel furnace (1) near the bottom of the through slot. An air inlet guide channel (5) is fixed inside the cooling tunnel furnace (1) to connect the through slots at the corresponding positions of the two dustproof nets (4). Multiple vertical guide plates (6) are fixed longitudinally on the top of the inner wall of the air inlet guide channel (5) corresponding to the roller conveyor (2). Ventilation holes (7) are evenly arranged at the top of the air inlet guide channel (5) between adjacent guide plates (6). The cooling tunnel furnace (1) has an exhaust guide groove (8) vertically fixed on the top of the inner wall of the roller conveyor (2). Multiple horizontally arranged exhaust baffles (9) are installed in the exhaust guide groove (8) along the vertical direction. Ventilation holes (10) are evenly arranged on the exhaust baffles (9).

2. The brake disc nitriding fan cooling device according to claim 1, characterized in that: The cooling tunnel furnace (1) is provided with mounting grooves (11) on both the front and back sides, and the dustproof net (4) is installed on the cooling tunnel furnace (1) by means of the mounting grooves (11).

3. The brake disc nitriding fan cooling device according to claim 1, characterized in that: Multiple guide plates (6) are arranged equidistantly and symmetrically in the longitudinal direction. The vertical length of the guide plate (6) located in the middle of the air inlet guide groove (5) is greater than the vertical length of the guide plate (6) near the dustproof net (4), and the vertical length of the guide plates (6) decreases one by one.

4. The brake disc nitriding fan cooling device according to claim 1, characterized in that: The exhaust baffle (9) is suspended from the top of the inner wall of the cooling tunnel furnace (1) by a hanging cable (12), and a buffer pad (13) is fixed on the inner wall of the exhaust guide groove (8) at the position corresponding to the exhaust baffle (9).

5. The brake disc nitriding fan cooling device according to claim 1, characterized in that: Multiple exhaust baffles (9) are equidistantly arranged in the vertical direction. The inner diameter and hole spacing of the second ventilation hole (10) on the upper exhaust baffle (9) are greater than the inner diameter and hole spacing of the second ventilation hole (10) on the lower exhaust baffle (9), and the inner diameter and hole spacing decrease step by step.

6. The brake disc nitriding fan cooling device according to claim 1, characterized in that: A heat insulation layer (14) is fixed on the inner wall of the cooling tunnel furnace (1).

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