Hot air rotary dryer for bearing balls
The design of the hot air rotary dryer solves the problems of low drying efficiency and high energy consumption of bearing balls, achieving efficient, uniform, and low-energy drying results, while ensuring safe operation and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XINGCHANG STEEL BALL CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the drying method of bearing balls is inefficient, energy-intensive, and difficult to ensure uniform drying, which cannot meet the requirements of high efficiency, low energy consumption and high reliability of modern industrial production.
The hot air rotary dryer uses a connecting channel consisting of an outer shell and an internal connecting pipe to reduce heat loss and divides the inner cavity of the drying chamber into multiple independent drying chambers. The motor drives the rotating shaft to rotate the tray, and the unique design of the tray ensures that the balls are in full contact with the hot air.
It improves drying efficiency and effectiveness, reduces energy consumption, achieves uniform drying, prevents the risk of burns, and is easy to operate and maintain.
Smart Images
Figure CN224534682U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ball bearing drying equipment, specifically to a hot air rotary dryer for bearing balls. Background Technology
[0002] As fundamental mechanical components, bearings require cleaning during manufacturing and maintenance. After cleaning, the balls must be thoroughly dried to prevent rust. Traditional drying methods include natural air drying, centrifugal drying, or conventional oven drying. Natural air drying is inefficient and highly susceptible to ambient humidity, making complete drying difficult. While centrifugal drying removes most surface liquid water, its effectiveness is limited for complex structural components or residual traces of water, and it may generate noise and vibration. Conventional oven drying suffers from uneven hot air distribution, high energy consumption, and low drying efficiency. Significant heat loss occurs during hot air transport, and the relatively stationary state of the balls in the trays results in insufficient contact with the hot air, with some balls potentially obstructed and unable to be effectively dried. This ultimately affects drying quality and efficiency, failing to meet the demands of modern industrial production for high efficiency, low energy consumption, and high reliability. Therefore, there is an urgent need for a dedicated bearing ball drying equipment that can achieve uniform, efficient, low-energy, and safe operation. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hot air rotary dryer for bearing balls, which can improve the drying efficiency of bearing balls.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a hot air rotary dryer for bearing balls, comprising a frame, a hot air generating mechanism, a drying chamber, a drying mechanism, and a connecting channel connecting the hot air generating mechanism and the drying chamber, all mounted on the frame. The drying mechanism includes a motor, a rotating shaft, and multiple correspondingly grouped connecting parts and trays; the motor is mounted on the frame; the rotating shaft is vertically mounted inside the drying chamber, with its lower end fixedly connected to the motor output shaft; the connecting parts are fixedly mounted on the rotating shaft; the trays are detachably fitted onto the rotating shaft via the connecting parts; and multiple trays are axially spaced on the rotating shaft.
[0005] Preferably, the bottom plate of the tray has a U-shaped groove extending to the outer edge at its axial center, and the width of the U-shaped groove is adapted to the outer diameter of the rotating shaft; the side wall of the tray is composed of an outer baffle, a connecting plate, and an inner baffle, wherein the outer baffle and the inner baffle are both arc plate structures with axial grooves, the inner baffle is located inside the outer baffle and the two are coaxially arranged, and the connecting plate and the inner baffle correspond to the position of the U-shaped groove; the groove of the inner baffle is the same width as the U-shaped groove and is connected; the inner baffle is sleeved on the connector.
[0006] Preferably, the connecting member consists of a gear and an annular support plate, and the inner wall of the inner baffle is provided with an internal tooth groove that meshes with the gear; the lower end of the base plate abuts against the upper end of the support plate.
[0007] Preferably, the base plate has a plurality of through holes.
[0008] Preferably, the drying oven has a door and an exhaust vent; the interior of the drying oven is also fixedly equipped with multiple partitions that divide the internal cavity of the drying oven into multiple drying chambers in a longitudinal direction; the connecting parts and trays arranged in groups are corresponding to the drying chambers.
[0009] Preferably, the connection channel includes multiple connecting pipes; one end of the connecting pipe is connected to the hot air generating mechanism, and the other end is connected to the drying chamber.
[0010] Preferably, each drying chamber is equipped with multiple connecting pipes.
[0011] Preferably, the connection channel further includes a housing, which is disposed between the hot air generating mechanism and the drying chamber and covers the outside of the connection pipe.
[0012] Preferably, the outer baffle has a plurality of side holes.
[0013] Preferably, the hot air generating mechanism includes a blower, a heating wire, and a hot air box, wherein the heating wire is correspondingly arranged with the hot air box, and the air outlet of the blower is connected to the hot air box; the hot air box is connected to the drying box through a connecting pipe.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a connection channel composed of an outer shell and an internal connecting pipe, this application effectively reduces heat loss during the hot air conveying process, improves heat energy utilization, and reduces energy consumption. At the same time, the outer shell plays a protective role, preventing the risk of burns. By dividing the inner cavity of the drying chamber into multiple independent drying chambers and setting independent connecting pipes for air supply, a zoned and controllable drying environment is achieved, improving drying uniformity. The drying mechanism uses a motor-driven rotating shaft, which drives the tray to rotate synchronously through gear meshing with the inner tooth groove of the tray. This avoids tray slippage and ensures that the balls continuously tumble within the tray, allowing all surfaces to fully contact the hot air, greatly improving drying efficiency and effect. The tray adopts a unique design with a bottom plate with through holes, an open outer baffle, a U-shaped groove, and an inner tooth groove, which not only ensures high hot air penetration but also enables convenient and reliable installation and disassembly between the tray and the rotating shaft, facilitating loading, unloading, and maintenance. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the hot air dryer of this utility model;
[0016] Figure 2This is a schematic diagram of the hot air dryer of this utility model after the door has been removed;
[0017] Figure 3 This is a schematic diagram of the internal structure of the hot air dryer of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the rotating shaft and the tray of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the rotating shaft and gear of this utility model;
[0020] Figure 6 This is a schematic diagram of the tray structure of this utility model.
[0021] In the diagram: 1. Hot air generating mechanism, 11. Blower, 12. Heating wire, 13. Hot air box; 2. Drying oven, 21. Door, 22. Exhaust vent, 23. Partition; 3. Drying mechanism, 31. Motor, 32. Shaft, 33. Tray, 34. Gear, 35. Support plate, 331. Base plate, 332. Outer baffle, 333. Connecting plate, 334. Inner baffle; 4. Connecting channel, 41. Outer shell, 42. Connecting pipe; 5. Frame. Detailed Implementation
[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.
[0023] See Figure 1-6 In one embodiment of this utility model, a hot air rotary dryer for bearing balls includes: a frame 5, and a hot air generating mechanism 1, a drying chamber 2, a drying mechanism 3, and a connecting channel 4 between the hot air generating mechanism 1 and the drying chamber 2, all mounted on the frame 5. The drying mechanism 3 is correspondingly arranged with the drying chamber 2, and the connecting channel 4 is used to transport the hot air generated by the hot air generating mechanism 1 into the drying chamber 2. The hot air, in conjunction with the drying mechanism 3, thoroughly dries the cleaned bearing balls, ensuring that the balls are completely dry and preventing rust.
[0024] The hot air generating mechanism 1 includes a blower 11, a heating wire 12, and a hot air box 13. The heating wire 12 is correspondingly arranged with the hot air box 13, and the air outlet of the blower 11 is connected to the hot air box 13.
[0025] The connecting channel 4 includes a housing 41 and multiple connecting pipes 42. The housing 41 is located between the hot air box 13 and the drying box 2. The multiple connecting pipes 42 are all located inside the housing 41, with the first end of each connecting pipe 42 connected to the hot air box 13 and the second end connected to the drying box 2. This structure protects the connecting pipes 42 and prevents accidental burns from personnel, while effectively reducing heat loss during hot air delivery, thereby improving drying efficiency and reducing energy consumption.
[0026] The drying chamber 2 has a door 21 and an exhaust vent 22. The door 21 is used for feeding and discharging materials, while the exhaust vent 22 is used to discharge water vapor to the outside of the chamber. The drying chamber 2 is also fixedly equipped with three partitions 23, which divide the internal cavity of the drying chamber 2 into three independent drying chambers in a longitudinal direction. Each drying chamber is connected to a corresponding number of connecting pipes 42 to form a three-station drying process.
[0027] The drying mechanism 3 includes a motor 31, a rotating shaft 32, a connecting piece, and a tray 33. The motor 31 is mounted on the frame 5. The rotating shaft 32 is vertically mounted inside the drying chamber 2 via bearings. The lower end of the rotating shaft 32 is fixedly connected to the output shaft of the motor 31 and can be driven to rotate around the shaft. The rotating shaft 32 passes through three partitions 23 and forms a sliding fit with the partitions 23.
[0028] The connectors are provided in three pairs, corresponding to each of the trays 33; the three pairs of connectors and trays 33 are placed in three separate drying chambers, each independent of the others.
[0029] The connector is fixedly mounted on the rotating shaft 32. The connector is an inverted T-shaped structure consisting of a gear 34 and an annular support plate 35 fixedly and coaxially mounted on the lower end of the gear 34.
[0030] See Figures 4 to 6 The tray 33 includes a base plate 331 and an outer baffle 332, a connecting plate 333, and an inner baffle 334 fixed on the base plate 331. The base plate 331 has several through holes and a U-shaped groove extending to the axial center on its outer edge. The outer baffle 332 and the inner baffle 334 are both arc plate structures with axial grooves. Both are coaxially arranged with the base plate 331, and the inner baffle 334 is located inside the outer baffle 332.
[0031] Two connecting plates 33 are connected between the outer baffle 332 and the inner baffle 334, corresponding to the position of the U-shaped groove, and together they form a space to accommodate the ball bearings. It can also be understood that the outer baffle 332, the connecting plate 333 and the inner baffle 334 form the side wall of the tray 33. The width of the U-shaped groove is adapted to the outer diameter of the rotating shaft 32, and the groove width of the inner baffle 334 is consistent with the distance between the two connecting plates 333, so that the tray 33 can be fitted onto the rotating shaft 32 through the U-shaped groove.
[0032] To facilitate convenient and reliable installation and disassembly between the tray 33 and the rotating shaft 32, and to simplify loading, unloading, and maintenance, the inner wall of the inner baffle 334 is provided with an internal toothed groove that meshes with the gear 34. When the tray 33 is installed in place along the rotating shaft 32, the base plate 331 rests on the support plate 35. At this time, the gear 34 meshes with the inner baffle 334 through the toothed groove. This design, on the one hand, drives the tray 33 to rotate during rotation via gear transmission, preventing circumferential slippage and improving the contact efficiency between the balls and the hot air; on the other hand, the outer diameter of the gear 34 is larger than the width of the U-shaped groove, which can laterally restrict the displacement of the tray 33 and prevent it from falling off. For disassembly, the tray 33 is moved upwards to disengage from the gear 34, and can then be removed from the rotating shaft 32 along the U-shaped groove.
[0033] Furthermore, the outer baffle 332 has several side holes that function the same as the through holes for ventilation, while also making the entire tray 33 have a hollow structure so that the balls placed in the tray 33 can fully contact the hot air.
[0034] This technical solution effectively reduces heat loss during hot air delivery by setting up a connection channel consisting of an outer shell and an internal connecting pipe, thereby improving heat energy utilization and reducing energy consumption. Simultaneously, the outer shell provides protection against burns. By dividing the drying chamber into multiple independent drying rooms and providing corresponding independent connecting pipes for air supply, a zoned and controllable drying environment is achieved, improving drying uniformity. The drying mechanism uses a motor-driven rotating shaft, which rotates the tray synchronously through gear engagement with the tray's internal toothed grooves. This prevents tray slippage and ensures that the balls continuously tumble within the tray, allowing all surfaces to fully contact the hot air, greatly improving drying efficiency and effectiveness. The tray features a unique design with a perforated bottom plate, an open outer baffle, a U-shaped groove, and internal toothed grooves. This design ensures high hot air penetration and facilitates convenient and reliable installation and disassembly between the tray and the rotating shaft, simplifying loading, unloading, and maintenance.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A hot air rotary dryer for bearing balls, comprising a frame (5), a hot air generating mechanism (1), a drying chamber (2), a drying mechanism (3) mounted on the frame (5), and a connecting channel (4) connecting the hot air generating mechanism (1) and the drying chamber (2), characterized in that: The drying mechanism (3) includes a motor (31), a rotating shaft (32), and multiple corresponding connecting parts and trays (33); the motor (31) is mounted on the frame (5); the rotating shaft (32) is vertically mounted inside the drying chamber (2), and its lower end is fixedly connected to the output shaft of the motor (31); the connecting parts are fixedly mounted on the rotating shaft (32); the trays (33) are detachably mounted on the rotating shaft (32) through the connecting parts; multiple trays (33) are axially spaced on the rotating shaft (32).
2. The hot air rotary dryer for bearing balls according to claim 1, characterized in that: The bottom plate of the tray (33) has a U-shaped groove extending to the outer edge at the center of the axis, and the width of the U-shaped groove is adapted to the outer diameter of the rotating shaft (32); the side wall of the tray (33) is composed of an outer baffle, a connecting plate and an inner baffle, wherein the outer baffle and the inner baffle are both arc plate structures with axial grooves, the inner baffle is located inside the outer baffle and the two are coaxially arranged, and the connecting plate and the inner baffle are corresponding to the position of the U-shaped groove; the groove of the inner baffle is the same width as the U-shaped groove and is connected; the inner baffle is sleeved on the connector.
3. A hot air rotary dryer for bearing balls according to claim 2, characterized in that: The connector consists of a gear (34) and an annular support plate (35). The inner wall of the inner baffle is provided with an inner tooth groove that meshes with the gear (34). The lower end of the base plate abuts against the upper end of the support plate (35).
4. A hot air rotary dryer for bearing balls according to claim 2, characterized in that: The base plate has several through holes.
5. A hot air rotary dryer for bearing balls according to claim 1, characterized in that: The drying box (2) has a door and an exhaust vent; the drying box (2) is also fixedly provided with multiple partitions to divide the internal cavity of the drying box (2) into multiple drying chambers in a longitudinal direction; the connecting parts and trays (33) are arranged in groups and are corresponding to the drying chambers.
6. A hot air rotary dryer for bearing balls according to claim 5, characterized in that: The connection channel (4) includes multiple connecting pipes (42); one end of the connecting pipe (42) is connected to the hot air generating mechanism (1), and the other end is connected to the drying chamber.
7. A hot air rotary dryer for bearing balls according to claim 6, characterized in that: Each drying chamber is equipped with multiple connecting pipes (42).
8. A hot air rotary dryer for bearing balls according to claim 6, characterized in that: The connecting channel (4) also includes a housing (41), which is located between the hot air generating mechanism (1) and the drying box (2) and covers the outside of the connecting pipe (42).
9. A hot air rotary dryer for bearing balls according to claim 2, characterized in that: The outer baffle has several side holes.
10. A hot air rotary dryer for bearing balls according to claim 1, characterized in that: The hot air generating mechanism (1) includes a blower, an electric heating wire and a hot air box. The electric heating wire is arranged correspondingly to the hot air box, and the air outlet of the blower is connected to the hot air box. The hot air box is connected to the drying box through a connecting pipe.