Drying furnace structure for hub bearing

Abstract

This utility model relates to a drying oven structure for wheel hub bearings, belonging to the technical field of drying oven equipment. It includes a drying oven body with a drying chamber inside. A ventilation frame is located at the lower end of the drying chamber. A perforated ventilation filter plate is installed between the ventilation frame and the drying chamber. A circulating fan is located above the drying chamber. A connecting frame is provided between the circulating fan and the drying oven body. Air outlet ducts are located on both sides of the connecting frame, communicating with the drying chamber through the ventilation frame and the perforated ventilation filter plate. A filter and purification air inlet assembly, connected to the circulating fan via a flanged pipe, is located at the upper end of the drying oven body. This design features increased airflow and reduced air pressure. By using a large airflow and low air pressure, drying time is reduced while minimizing hot air leakage caused by pressure, and the requirement for uniform airflow speed is lowered.

Description

Technical Field

[0001] This utility model relates to the technical field of drying oven equipment, and specifically to a drying oven structure for wheel hub bearings. Background Technology

[0002] Wheel bearings are critical safety components in automobiles, and their precision, lifespan, and reliability directly affect driving safety. Cleaning is an essential step in the manufacturing process, followed by thorough drying. Any residual moisture can cause the bearing to rust, affect lubrication, or even cause abnormal noise or premature failure during use.

[0003] Traditional drying methods (such as simple hot air blowing) suffer from low efficiency, uneven drying (especially in internal structures), and high energy consumption, failing to meet the demands of modern large-scale, high-standard automated production. Early drying ovens may have had simple structures, relying solely on a single air vent at the bottom or side, resulting in poor hot air circulation, uneven temperature, and high energy consumption. Dehumidification was also mostly achieved through natural dehumidification or simple forced ventilation with fans, which was inefficient. Summary of the Invention

[0004] This invention primarily addresses the shortcomings of existing technologies by providing a drying oven structure for wheel hub bearings, characterized by increased airflow and reduced air pressure. By utilizing a large airflow and low air pressure, drying time is reduced while minimizing hot air leakage caused by pressure, and the requirement for uniform airflow speed is also lessened.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions: A drying oven structure for wheel hub bearings includes a drying oven body, a drying chamber inside the drying oven body, a ventilation base frame at the lower end of the drying chamber, a ventilation filter plate between the ventilation base frame and the drying chamber, a circulating fan above the drying chamber, a connecting frame between the circulating fan and the drying oven body, air outlet ducts on both sides of the connecting frame that are connected to the drying chamber through the ventilation base frame and the ventilation filter plate, and a filter and purification air inlet assembly at the upper end of the drying oven body that is connected to the circulating fan via a flanged pipe.

[0006] The circulating fan adopts a circular duct fan structure, with a large air volume and low static pressure. Air enters from the center and is thrown out in large volume to the sides and upwards, entering the ventilation racks on both sides. Hot air flows out from the ventilation base, passes through the perforated plate, enters the drying chamber, and naturally flows back from bottom to top into the return air duct directly above the drying oven body and directly below the fan inlet.

[0007] The ventilation base is equipped with a perforated ventilation filter plate to filter out lint, dust, etc., and an automatic cleaning robot can be placed inside.

[0008] Preferably, the filtration and purification air intake assembly includes a filtration and purification box, which has an air intake chamber and an air guide chamber. The air intake chamber and the air guide chamber are equipped with filter screens. The upper end of the filtration and purification box is provided with an air intake pipe that communicates with the air intake chamber. The air guide chamber and the circulating fan are provided with an air outlet pipe that is welded through to the lower end of the filtration and purification box.

[0009] A dehumidifying fan is installed at the top of the air inlet duct to keep the air entering the drying oven dry; each zone of the exhaust duct has an adjustable air valve, and the opening of the valve in each zone can be manually adjusted according to the humidity level of each zone.

[0010] Preferably, a return air duct is provided between the lower end of the air outlet duct and the drying chamber.

[0011] Preferably, a ventilation support frame is provided between the side of the air outlet duct and the ventilation filter plate, which fits against the inner wall of the drying oven. The ventilation supports on both sides do not have perforated plates, are connected to the connecting frame at the top and to the base frame at the bottom, and are not directly connected to the drying chamber. Compared with the original structure, it is narrower, or even only half the width of the original.

[0012] Preferably, the ventilation frame is equipped with a dehumidification pipe that penetrates the ventilation filter plate and is connected to the drying chamber. A dehumidification duct is installed within the ventilation frame, through which moisture, which is heavier than hot air, is drawn out of the drying oven.

[0013] Preferably, the drying oven body includes an outer wall and a phase change material insulation layer. A hot air filling layer is provided between the phase change material insulation layer and the outer wall, and an aluminum silicate sandwich panel layer is provided between the hot air filling layer and the outer wall. Several circulating air ducts are provided between the air outlet duct and the hot air filling layer. The aluminum silicate sandwich panel layer is 220 mm thick: the bottom layer is 20 mm thick aluminum silicate, the middle layer is 50 mm thick rock wool, and the top layer is 150 mm thick machine-made insulation board. The outer wall is a brick wall, and the brick wall is filled with rock wool.

[0014] Phase change materials (PCMs) possess the ability to change their physical state within a certain temperature range. Taking solid-liquid phase change as an example, when heated to the melting temperature, a phase change occurs from solid to liquid. During melting, the PCM absorbs and stores a large amount of latent heat. When the PCM cools, the stored heat dissipates into the environment within a certain temperature range, undergoing a reverse phase change from liquid to solid. The energy stored or released during these two phase change processes is called the latent heat of phase change. When the physical state changes, the material's temperature remains almost constant until the phase change is complete, forming a broad temperature plateau. Although the temperature remains constant, the absorbed or released latent heat is considerable.

[0015] This invention can achieve the following effects: This invention provides a drying oven structure for wheel hub bearings, which, compared with the prior art, features increased air volume and reduced air pressure. By using a large air volume and low air pressure, drying time is reduced while minimizing hot air leakage caused by pressure, and the requirement for uniform air velocity is also lowered.

[0016] Highly efficient and uniform drying effect: Utilizing a vertical airflow pattern of "bottom supply and top return," hot air rises evenly from the bottom, conforming to the natural convection law of hot air. This ensures a highly uniform temperature field within the furnace, preventing localized overheating or insufficient drying of the workpiece. The ventilation filter plate serves both rectification and filtration functions, guaranteeing the uniformity and cleanliness of the airflow.

[0017] Significant energy-saving design: Closed-loop circulation: Most of the hot air circulates within the system, with only a small amount of humid air needing to be discharged, resulting in high thermal energy utilization.

[0018] The composite insulation layer, consisting of aluminum silicate (traditional insulation), phase change material (constant temperature energy storage), and hot air filling layer (active waste heat recovery), features a triple insulation design that significantly reduces energy consumption and is one of the biggest highlights of this design.

[0019] High cleanliness guarantee: The filtration and purification air intake component ensures that the supplied fresh air is clean, preventing dust and other impurities from adhering to the bearing surface at high temperatures and affecting product quality.

[0020] Highly efficient dehumidification: The specially designed dehumidification pipe enables "online dehumidification," which can quickly expel the evaporated water vapor, accelerate the drying process, and is more efficient than simply relying on circulating air to remove moisture.

[0021] Excellent maintainability: The ventilated base frame is designed with online cleaning in mind, reducing equipment downtime and improving the overall efficiency of the production line. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the filter and purification air intake assembly of this utility model.

[0024] Figure 3 This is a schematic diagram of the structure of the drying oven body of this utility model.

[0025] In the diagram: 1. Drying oven body; 2. Circulating fan; 3. Connecting frame; 4. Air outlet duct; 5. Ventilation support frame; 6. Ventilation base frame; 7. Ventilation filter plate; 8. Return air duct; 9. Drying chamber; 10. Dehumidification pipe; 11. Filter and purification air inlet assembly; 12. Filter and purification box; 13. Air inlet cavity; 14. Filter screen partition; 15. Air inlet pipe; 16. Air outlet pipe; 17. Air guide cavity; 18. Exterior wall; 19. Aluminum silicate sandwich panel layer; 20. Hot air filling layer; 21. Phase change material insulation layer; 22. Circulating air duct. Detailed Implementation

[0026] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example: Figure 1 , Figure 2 and Figure 3 As shown, a drying oven structure for wheel hub bearings includes an oven body 1, a drying chamber 9 inside the oven body 1, a ventilation base 6 at the lower end of the drying chamber 9, a ventilation filter plate 7 between the ventilation base 6 and the drying chamber 9, and a dehumidification pipe 10 inside the ventilation base 6 that penetrates the ventilation filter plate 7 and communicates with the drying chamber 9. A circulating fan 2 is located above the drying chamber 9, and a connecting frame 3 is located between the circulating fan 2 and the oven body 1. Air outlet ducts 4 on both sides of the connecting frame 3 are connected to the drying chamber 9 via the ventilation base 6 and the ventilation filter plate 7. A return air duct 8 is located between the lower end of the air outlet duct 4 and the drying chamber 9. A ventilation support 5, which fits against the inner wall of the oven body 1, is located between the side of the air outlet duct 4 and the ventilation filter plate 7. The drying oven body 1 includes an outer wall 18 and a phase change material insulation layer 21. A hot air filling layer 20 is provided between the phase change material insulation layer 21 and the outer wall 18. An aluminum silicate sandwich layer 19 is provided between the hot air filling layer 20 and the outer wall 18. Several circulating air ducts 22 are provided between the air outlet duct 4 and the hot air filling layer 20.

[0028] The upper part of the drying oven body 1 is equipped with a filter and purification air inlet assembly 11, which is connected to the circulating fan 2 via a flanged pipe. The filter and purification air inlet assembly 11 includes a filter and purification box 12, which contains an air inlet chamber 13 and an air guide chamber 17. Two sets of filter screen partitions 14 are located between the air inlet chamber 13 and the air guide chamber 17. The upper part of the filter and purification box 12 is equipped with an air inlet pipe 15, which is connected to the air inlet chamber 13. The air guide chamber 17 and the circulating fan 2 are connected by an air outlet pipe 16, which is welded through to the lower part of the filter and purification box 12.

[0029] The workflow includes the following steps: Step 1: When the wheel hub bearing is delivered into the drying oven body 1, the circulating fan 2 starts to send the air purified by the filter and purification air intake assembly 11 into the drying oven body 1.

[0030] The air intake assembly 11 uses an air intake pipe 15 to intake air. After the air is purified by two sets of filter screens 14 in the air guide cavity 13, it enters the air guide cavity 17 and is then sent to the circulating fan 2 by the air outlet pipe 16.

[0031] Step 2: The circulating fan 2 sends air to the lower two sides of the air outlet duct 4 and into the ventilation frame 5.

[0032] Step 3: The air from the ventilation stand 5 passes through the ventilation base 6 and then through the ventilation filter plate 7 into the drying chamber 9. The air in the drying chamber 9 undergoes a dehumidification process through the dehumidification pipe 10.

[0033] Step 4: Next, the return air duct 8 above the drying chamber 9 is connected to the circulating fan 2 to form a complete loop.

[0034] Step 5: The interior of the ventilation base 6 can be cleaned online simultaneously.

[0035] In summary, the drying oven structure for wheel hub bearings features increased airflow and reduced air pressure. By using a large airflow and low air pressure, drying time is reduced while minimizing hot air leakage caused by pressure, and the requirement for uniform airflow speed is also decreased.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A drying oven structure for wheel hub bearings, comprising a drying oven body (1), characterized in that: The drying oven body (1) is provided with a drying chamber (9), the lower end of the drying chamber (9) is provided with a ventilation base frame (6), the ventilation base frame (6) and the drying chamber (9) are provided with a ventilation filter plate (7), the upper part of the drying chamber (9) is provided with a circulating fan (2), the circulating fan (2) and the drying oven body (1) are provided with a connecting frame (3), the connecting frame (3) is provided with an air outlet duct (4) on both sides, which is connected to the drying chamber (9) through the ventilation base frame (6) and the ventilation filter plate (7), and the upper part of the drying oven body (1) is provided with a filter and purification air inlet assembly (11) connected to the circulating fan (2) by a flange-type pipeline.

2. The drying oven structure for wheel hub bearings according to claim 1, characterized in that: The filter purification air intake assembly (11) includes a filter purification box (12), which is provided with an air intake chamber (13) and an air guide chamber (17). The air intake chamber (13) and the air guide chamber (17) are provided with filter screen partitions (14). The upper end of the filter purification box (12) is provided with an air intake pipe (15) that communicates with the air intake chamber (13). The air guide chamber (17) and the circulating fan (2) are provided with an air outlet pipe (16) that is welded through to the lower end of the filter purification box (12).

3. The drying oven structure for wheel hub bearings according to claim 2, characterized in that: A return air duct (8) is provided between the lower end of the air outlet duct (4) and the drying chamber (9).

4. The drying oven structure for wheel hub bearings according to claim 3, characterized in that: A ventilation support frame (5) is provided between the side of the air outlet duct (4) and the ventilation filter plate (7) to fit the inner wall of the drying oven body (1).

5. The drying oven structure for wheel hub bearings according to claim 4, characterized in that: The ventilation base frame (6) is provided with a dehumidification pipe (10) that penetrates the ventilation filter plate (7) and is connected to the drying chamber (9).

6. The drying oven structure for wheel hub bearings according to claim 1, characterized in that: The drying oven body (1) includes an outer wall (18) and a phase change material insulation layer (21). A hot air filling layer (20) is provided between the phase change material insulation layer (21) and the outer wall (18). An aluminum silicate sandwich layer (19) is provided between the hot air filling layer (20) and the outer wall (18). Several circulating air ducts (22) are provided between the air outlet duct (4) and the hot air filling layer (20).

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