Positive pressure sealed water-proof bearing seat

Abstract

The utility model discloses a positive pressure formula sealed waterproof bearing seat, including bearing seat body, fixed waterproof cover and rotary waterproof cover, the front end of rotary waterproof cover is connected with roll, the rear end of rotary waterproof cover is equipped with through -hole, the front end of fixed waterproof cover passes through through -hole and extends into rotary waterproof cover, the rear end of fixed waterproof cover is connected with bearing seat body, and the exhaust gap is equipped between fixed waterproof cover and rotary waterproof cover, and is equipped with compressed air inlet on fixed waterproof cover. The scheme simple structure, convenient installation, relative to the waterproof seal and waterproof glue design of current has added fixed waterproof cover and rotary waterproof cover, and through injection compressed air, forms the airflow and can more effectively prevent the water flow from seeping into the bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing housing structure technology, specifically a positive pressure sealed waterproof bearing housing. Background Technology

[0002] The CGL production line (galvanizing production line) suffers from excessive water spraying and humid conditions. Even with waterproof seals and adhesives in the design of the leveling mill roll bearing housings, the water resistance of the bearings cannot be effectively guaranteed, especially at the junction of the bearing housing and the roll neck, which is a critical location for water ingress leading to lubrication failure. Once water enters the bearing, the lubricating oil emulsifies rapidly, making it impossible to replenish with new lubricating oil. This causes the bearing to wear out quickly, necessitating line shutdown and replacement, thus impacting production schedules. Currently, the solution is to strictly enforce management systems, shortening the replacement cycle of the leveling mill roll bearings to once every three months. Since the leveling mill has seven rolls, this averages to 28 replacements per year, which is extremely costly and labor-intensive. Therefore, there is an urgent need to improve the water resistance design of the leveling mill roll bearing housings. Utility Model Content

[0003] To address the problems mentioned in the background technology, this solution provides a positive pressure sealed waterproof bearing housing, which can be applied to the SKP rolls of the CGL (galvanizing production line) and CAL (continuous annealing line) production lines of cold rolling steel plates. It effectively prevents water from directly splashing onto the bearing position, thus extending the service life of the bearing and avoiding downtime due to malfunctions.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a positive pressure sealed waterproof bearing housing, including a bearing housing body, a fixed waterproof cover, and a rotating waterproof cover. The fixed waterproof cover and the rotating waterproof cover are sleeved on the neck of the roll, and there is a gap between the fixed waterproof cover and the roll. The front end of the rotating waterproof cover is connected to the roll, and the rear end of the rotating waterproof cover has a through hole. The front end of the fixed waterproof cover passes through the through hole and extends into the rotating waterproof cover. The rear end of the fixed waterproof cover is connected to the bearing housing body. An exhaust gap is provided between the fixed waterproof cover and the rotating waterproof cover. The fixed waterproof cover has a compressed air inlet. By introducing compressed air into the fixed waterproof cover, the compressed air then flows into the rotating waterproof cover, filling the inner cavity of the fixed waterproof cover and the rotating waterproof cover, creating a positive pressure in the inner cavity. The airflow finally flows outward through the exhaust gap, which can effectively prevent sprayed water from entering the bearing housing.

[0005] Furthermore, the size of the exhaust gap is preferably 0.5-1mm.

[0006] Furthermore, the rotating waterproof cover is also provided with several drainage slits. When the rotating waterproof cover rotates with the roller, centrifugal force can be used to throw the water inside the waterproof cover out through the drainage slits.

[0007] Furthermore, the front end of the rotary waterproof cover is provided with a front connecting outer edge plate, the front connecting outer edge plate is provided with a first mounting hole for connecting the roller, and the rear end of the rotary waterproof cover is provided with a bottom plate, the center of the bottom plate is provided with the through hole.

[0008] Furthermore, the rotating waterproof cover is a frustum shape that gradually widens from front to back. The drainage seams are located at the outer edge of the base plate, where they experience the greatest centrifugal force, facilitating the ejection of water droplets. Preferably, there are 3 to 6 drainage seams, which are evenly distributed in a circular pattern around the center of the base plate at its outer edge.

[0009] Furthermore, the base plate is also provided with an inwardly extending inner edge plate at the through hole, which can effectively prevent the sprayed water from directly spraying into the bearing seat from the exhaust gap.

[0010] Furthermore, the fixed waterproof cover is a straight cylindrical shape from front to back. The rear end of the fixed waterproof cover is provided with a rear connecting outer edge plate. The rear connecting outer edge plate is provided with a second mounting hole for connecting the bearing seat body. The outer diameter of the fixed waterproof cover is smaller than the through hole, and the inner diameter of the fixed waterproof cover is larger than the roll neck.

[0011] The advantages of this utility model are: simple structure and easy installation. Compared with the existing waterproof seal and waterproof glue design, it adds a fixed waterproof cover and a rotating waterproof cover. By injecting compressed air, an airflow can be formed, which can more effectively prevent water from seeping into the bearing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2a and Figure 2b This is a schematic diagram of the rotating waterproof cover structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the fixed waterproof cover of this utility model. Detailed Implementation

[0013] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] Figure 1 The middle arrow indicates the direction of compressed air flow.

[0016] A positive pressure sealed waterproof bearing housing, such as Figures 1-3As shown, it includes a bearing housing body 1, a fixed waterproof cover 2 and a rotating waterproof cover 3. The fixed waterproof cover 2 and the rotating waterproof cover 3 are sleeved on the neck of the roll 4, and there is a gap between the fixed waterproof cover and the roll. The fixed waterproof cover 2 is a straight cylindrical shape from front to back. The rear end of the fixed waterproof cover is provided with a rear connecting outer edge plate 21. The rear connecting outer edge plate 21 is provided with a second mounting hole for connecting the bearing seat body 1. The rear end of the fixed waterproof cover 2 is connected and fixed to the bearing seat body 1 by screws. The rotating waterproof cover 3 is a frustum shape that gradually widens from front to back. The front end of the rotating waterproof cover 3 is provided with a front connecting outer edge plate 31. The front connecting outer edge plate 31 is provided with a first mounting hole for connecting the roll. The rear end of the rotating waterproof cover 3 is provided with a base plate 32. The center of the base plate 32 is provided with a through hole 33. The front end of the rotating waterproof cover 3 is connected and fixed to the roll 4 by screws. The outer diameter of the fixed waterproof cover 2 is smaller than the through hole 33, and the inner diameter of the fixed waterproof cover 2 is larger than the outer diameter of the neck of the roll 4. The front end of the fixed waterproof cover 2 passes through the through hole 33 and extends into the rotating waterproof cover 3. An exhaust gap is provided between the fixed waterproof cover 2 and the rotating waterproof cover 3. The fixed waterproof cover 2 is provided with a compressed air inlet 22.

[0017] Furthermore, the base plate 32 is also provided with an inwardly extending inner edge plate 34 at the through hole 33, which can effectively prevent the sprayed water from directly spraying into the bearing seat from the exhaust gap.

[0018] Furthermore, the size of the exhaust gap is preferably 0.5-1 mm. More preferably, the size of the exhaust gap is 0.8 mm.

[0019] Furthermore, the rotating waterproof cover 3 is also provided with a number of drainage slits 35. When the rotating waterproof cover rotates with the roller, centrifugal force can be used to throw the water in the waterproof cover out through the drainage slits 35.

[0020] Furthermore, the dimensions of the drainage slit 35 are preferably 1mm*5mm.

[0021] Furthermore, the drainage slits 35 are located at the outer edge of the base plate 32, where they experience the greatest centrifugal force, facilitating the ejection of water droplets. Preferably, there are four drainage slits 35, which are evenly distributed in a circular pattern around the center of the base plate 32 at its outer edge.

[0022] The operating principle of this embodiment is as follows: The junction between the bearing housing and the roll neck is where water ingress into the bearing housing leads to lubrication failure. This solution adds a fixed waterproof cover 2 to the bearing housing body 1 and a rotating waterproof cover 3 to the roller 4. The two waterproof covers are designed as a male and female unit, and do not contact each other. Compressed air is introduced into the fixed waterproof cover 2, and then flows into the rotating waterproof cover 3, filling the cavities of both covers and creating positive pressure. The airflow then flows outward through the exhaust gap, forming a waterproof barrier that effectively prevents sprayed water from entering the bearing housing. Since the rotating waterproof cover 3 is connected to the roller 4 and rotates synchronously with it, even if a very small amount of water splashes over the waterproof barrier and enters the waterproof cover, it can be ejected from the drainage gap 35 by the rotation of the roller 4.

[0023] The above description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. All simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A positive pressure type sealed waterproof bearing housing, characterized in that, The device includes a bearing housing body, a fixed waterproof cover, and a rotating waterproof cover. The front end of the rotating waterproof cover is connected to the roller, and the rear end of the rotating waterproof cover has a through hole. The front end of the fixed waterproof cover passes through the through hole and extends into the rotating waterproof cover. The rear end of the fixed waterproof cover is connected to the bearing housing body. An exhaust gap is provided between the fixed waterproof cover and the rotating waterproof cover. The fixed waterproof cover has a compressed air inlet.

2. The positive pressure type sealed waterproof bearing housing according to claim 1, characterized in that, The size of the exhaust gap is 0.5-1mm.

3. The positive pressure type sealed waterproof bearing housing according to claim 1, characterized in that, The rotating waterproof cover is also equipped with several drainage slits.

4. A positive pressure type sealed waterproof bearing housing according to claim 3, characterized in that, The front end of the rotary waterproof cover is provided with a front connecting outer edge plate, and the front connecting outer edge plate is provided with a first mounting hole for connecting the roller. The rear end of the rotary waterproof cover is provided with a bottom plate, and the center of the bottom plate is provided with the through hole.

5. A positive pressure type sealed waterproof bearing housing according to claim 4, characterized in that, The rotating waterproof cover is in the shape of a frustum that gradually widens from front to back, and the drainage seam is located at the outer edge of the base plate.

6. A positive pressure type sealed waterproof bearing housing according to claim 5, characterized in that, The number of drainage seams is 3 to 6, and the drainage seams are evenly distributed in a circular pattern on the outer edge of the base plate.

7. A positive pressure type sealed waterproof bearing housing according to claim 4, characterized in that, The base plate is further provided with an inwardly extending inner edge plate at the through hole.

8. A positive pressure type sealed waterproof bearing housing according to claim 1, characterized in that, The fixed waterproof cover is a straight cylindrical shape from front to back. The rear end of the fixed waterproof cover is provided with a rear connecting outer edge plate, and the rear connecting outer edge plate is provided with a second mounting hole for connecting the bearing seat body.

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