Corrosion-resistant bearing

Abstract

The utility model discloses a corrosion-resistant bearing. The corrosion-resistant bearing comprises an inner pipe, a through hole is formed in the center of the inner pipe, a limiting protruding ring is arranged in the middle of the outer wall of the inner pipe, the limiting protruding ring and the inner pipe are integrally formed in an injection mode, a first splicing ring is arranged on one side of the outer portion of the inner pipe, and a second splicing ring is arranged on the other side of the outer portion of the inner pipe. The first splicing ring and the second splicing ring are fixed through a movable connecting mechanism, a first limiting groove is formed in the inner side of the first splicing ring, a second limiting groove is formed in the inner side of the second splicing ring, and after the first splicing ring and the second splicing ring are spliced outside the inner pipe, the first limiting groove and the second limiting groove are matched. And an annular groove formed by the first limiting groove and the second limiting groove is rotationally matched with the limiting convex ring, so that the problems that the bearing is relatively inconvenient to mount and maintain and the corrosion resistance is relatively poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a corrosion-resistant bearing. Background Technique

[0002] In sewage treatment equipment, the commonly used bearing types for low-speed equipment mainly include rolling bearings and sliding bearings. Rolling bearings reduce friction and wear through the rolling of rolling elements (such as balls and rollers), and are suitable for medium-low speed and medium-light load occasions. Sliding bearings support the shaft through the sliding friction between the shaft and the bearing housing, and are suitable for low-speed, heavy-load, and mechanical rotating parts where it is difficult to add lubricating oil and maintain. Low-speed equipment usually refers to machinery with relatively low rotational speeds, such as sewage pumps and agitators. The bearings of these devices need to have sufficient load-bearing capacity and wear resistance to cope with long-term low-speed operation.

[0003] For example, the Chinese authorized patent "A Bearing for Mechanical Equipment" with the publication number CN206918058U includes a housing. An inner ring is arranged in the inner cavity of the housing. An inner tube penetrates through the inner ring. Both ends of the inner tube penetrate through the inner wall of the housing and extend to the outside of the housing. Limiting shafts penetrate through the top and bottom of the housing respectively. Limiting blocks are fixedly connected to both ends of the limiting shafts. Metal balls are sleeved on the surface of the limiting shafts and located in the inner cavity of the housing. One side of the metal balls contacts the surface of the inner ring. Force-bearing devices are fixedly connected to the top and bottom of the inner cavity of the housing respectively.

[0004] Although the above-mentioned prior art can be applied to low-speed equipment for sewage treatment, the overall structure is relatively complex, which increases the workload of maintenance personnel during installation and maintenance. Moreover, due to the strong corrosiveness of sewage, the bearings are prone to rust and corrosion problems. Therefore, it does not meet the existing requirements. For this reason, we propose a corrosion-resistant bearing. Summary of the Invention

[0005] The purpose of the utility model is to provide a corrosion-resistant bearing to solve the problems of inconvenient installation and maintenance of the bearing and poor corrosion resistance mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A corrosion-resistant bearing includes an inner tube; a through hole is arranged at the central position of the inner tube. A limiting convex ring is arranged at the middle position of the outer wall of the inner tube, and the limiting convex ring is integrally injection-molded with the inner tube. A first splicing ring is arranged on one side of the outside of the inner tube, and a second splicing ring is arranged on the other side of the outside of the inner tube. The first splicing ring and the second splicing ring are fixed by a movable connection mechanism. A first limiting groove is arranged on the inner side of the first splicing ring, and a second limiting groove is arranged on the inner side of the second splicing ring. After the first splicing ring and the second splicing ring are spliced outside the inner tube, the annular groove formed by the first limiting groove and the second limiting groove is rotationally matched with the limiting convex ring.

[0007] Preferably, the movable connection mechanism includes a clamping groove and a clamping block, and the clamping groove is in clamping fit with the clamping block. The clamping groove is arranged at both ends of the first splicing ring, and the clamping groove is integrally injection-molded with the first splicing ring. The clamping block is arranged at both ends of the second splicing ring, and the clamping block is integrally injection-molded with the second splicing ring.

[0008] Preferably, the length of the inner tube is between 33 and 43 mm, and the outer diameter of the inner tube is between 34 and 48 mm.

[0009] Preferably, the outer diameter of the outer ring formed after the first splicing ring and the second splicing ring are spliced is between 51 and 72 mm, and the thickness of the outer ring is between 16 and 20 mm.

[0010] Preferably, the diameter of the through hole is between 25 and 36 mm.

[0011] Preferably, the wall thickness of the inner tube is between 4.5 and 6 mm.

[0012] Preferably, the inner tube, the first splicing ring and the second splicing ring are all made of polyoxymethylene.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the clamping method of the inner ring tubular design and the outer ring annular splicing ring, and the rotational cooperation of the limiting convex ring and the limiting groove, the structural stability of the bearing is significantly improved. This design can effectively reduce looseness and wear caused by vibration or impact, thereby extending the service life of the bearing. The design of the annular splicing ring makes the assembly of the bearing more convenient, without the need for complex tools or equipment. Through the unique structural design, equipment failures and downtime caused by vibration or impact are reduced, and the operation stability and reliability of the equipment are improved. At the same time, when maintenance or replacement is required, it can be quickly disassembled, reducing the maintenance cost and time. The design that is easy to install and maintain reduces the workload of maintenance personnel and the maintenance cost. At the same time, due to the extended service life of the bearing, the cost caused by frequent bearing replacement is also reduced.

[0015] 2. The inner tube and the splicing ring of the present utility model are both made of polyoxymethylene. Polyoxymethylene has excellent corrosion resistance, especially good corrosion resistance to water, inorganic salt solutions, etc. It can also maintain stable performance within a relatively wide temperature range (-40°C to +100°C), so it is suitable for harsh environments such as sewage. In addition, POM also has characteristics such as self-lubricity, wear resistance, and high mechanical strength, which all help to improve the overall performance of the bearing. For environments with strong corrosion such as sewage, the corrosion resistance of plastic bearings effectively solves the problems of easy rusting and corrosion of traditional metal bearings. Moreover, plastic bearings are lighter in weight than metal bearings, which helps to reduce the overall weight of the equipment and reduce energy consumption. At the same time, its low friction characteristics also help to reduce energy consumption during low-speed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is a top view of the present utility model;

[0018] Figure 3 of the present utility model Figure 2 is a schematic view of the A-A cross-section in;

[0019] Figure 4 is a schematic view of the connection structure between the first splicing ring and the inner tube of the present utility model;

[0020] Figure 5 is a schematic view of the connection structure between the second splicing ring and the inner tube of the present utility model;

[0021] Figure 6 is a front view of the present utility model;

[0022] Figure 7 of the present utility model Figure 6 is a schematic view of the B-B cross-section in.

[0023] In the figure: 1. Inner tube; 2. First splicing ring; 3. Second splicing ring; 4. Through hole; 5. Limiting convex ring; 6. First limiting groove; 7. Card slot; 8. Block; 9. Second limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] Please refer to Figures 1-7, an embodiment provided by the present utility model: a corrosion-resistant bearing, including an inner tube 1; a through hole 4 is provided at the central position of the inner tube 1, a limiting convex ring 5 is provided at the middle position of the outer wall of the inner tube 1, and the limiting convex ring 5 is integrally injection-molded with the inner tube 1. On one side of the outside of the inner tube 1, a first splicing ring 2 is provided, and on the other side of the outside of the inner tube 1, a second splicing ring 3 is provided. The first splicing ring 2 and the second splicing ring 3 are fixed by a movable connection mechanism. A first limiting groove 6 is provided on the inner side of the first splicing ring 2, and a second limiting groove 9 is provided on the inner side of the second splicing ring 3. After the first splicing ring 2 and the second splicing ring are spliced outside the inner tube 1, the annular groove formed by the first limiting groove 6 and the second limiting groove 9 is rotationally matched with the limiting convex ring 5.

[0026] The rotational fit of the limiting convex ring 5 on the inner tube 1 with the annular groove formed by the limiting grooves on the inner sides of the first splicing ring 2 and the second splicing ring 3 effectively enhances the overall structural stability of the bearing. During the operation of the equipment, even in the face of vibration or impact, it can effectively reduce loosening and wear, thereby extending the service life of the bearing.

[0027] Please refer to Figure 3 , Figure 4 and Figure 7 , the movable connection mechanism includes a card slot 7 and a card block 8, and the card slot 7 and the card block 8 are in snap-fit. The card slot 7 is provided at both ends of the first splicing ring 2, and the card slot 7 is integrally injection-molded with the first splicing ring 2. The card block 8 is provided at both ends of the second splicing ring 3, and the card block 8 is integrally injection-molded with the second splicing ring 3. The snap-fit design of the card slot 7 and the card block 8 makes the assembly process of the first splicing ring 2 and the second splicing ring 3 very simple and fast. Without complex tools or additional fasteners, simply align the card block 8 with the card slot 7 and insert it to complete the splicing. Similarly, when disassembly is required, the card block 8 can be easily pulled out of the card slot 7 to achieve rapid disassembly. This design greatly improves the assembly and disassembly efficiency of the bearing. When maintenance or replacement of the bearing is needed, due to the simple disassembly design of the movable connection mechanism, the workload of maintenance personnel can be greatly reduced, and the maintenance cost and time can be reduced.

[0028] Furthermore, the length of the inner tube 1 is between 33 - 43 mm, the outer diameter of the inner tube 1 is between 34 - 48 mm, the diameter of the through hole 4 is between 25 - 36 mm, and the wall thickness of the inner tube 1 is between 4.5 - 6 mm. By setting the specific ranges of the length, outer diameter, through hole diameter, and wall thickness of the inner tube 1, the corrosion-resistant bearing can be applied to a variety of different application scenarios. The flexibility of these dimensional parameters ensures that the bearing can meet the installation and use requirements of different equipment or systems. It not only ensures that the inner tube has sufficient structural strength to withstand loads and transmit power, but also avoids weight increase caused by excessive wall thickness. The optimized wall thickness design helps to reduce the overall weight of the bearing, lower the energy consumption and operating cost of the equipment.

[0029] Furthermore, the outer diameter of the outer ring formed after the first splicing ring 2 and the second splicing ring 3 are spliced is between 51 - 72 mm, and the thickness of the outer ring is between 16 - 20 mm. This enables the corrosion-resistant bearing to adapt to a variety of installation spaces with different sizes, improving the versatility and flexibility of the bearing. This design allows the bearing to be widely used in various mechanical equipment, meeting the installation requirements under different working conditions, ensuring that the spliced outer ring has sufficient strength and stiffness to effectively resist external loads and impacts, and maintaining the stable operation of the bearing. The relatively thick outer ring can also provide better support and positioning effects, reducing looseness and wear caused by vibration or impact.

[0030] Furthermore, the inner tube 1, the first splicing ring 2, and the second splicing ring 3 are all made of polyoxymethylene. Polyoxymethylene has excellent corrosion resistance, especially in harsh environments such as water and inorganic salt solutions. This characteristic enables the corrosion-resistant bearing to operate stably for a long time in highly corrosive environments such as sewage and chemical industries, effectively solving the problem of easy rusting and corrosion of traditional metal bearings. Compared with traditional metal materials, polyoxymethylene has a lighter mass. Therefore, using a bearing made of polyoxymethylene helps to reduce the overall weight of the equipment, reduce energy consumption, and improve the energy efficiency ratio of the equipment. At low speeds, due to its low friction characteristics, the bearing made of polyoxymethylene helps to reduce friction losses, thereby reducing energy consumption.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A corrosion-resistant bearing, comprising an inner tube (1); characterized in that: A through hole (4) is provided at the central position of the inner tube (1). A limiting convex ring (5) is provided at the middle position of the outer wall of the inner tube (1), and the limiting convex ring (5) is integrally injection-molded with the inner tube (1). A first splicing ring (2) is provided on one side of the outside of the inner tube (1), and a second splicing ring (3) is provided on the other side of the outside of the inner tube (1). The first splicing ring (2) and the second splicing ring (3) are fixed by a movable connection mechanism. A first limiting groove (6) is provided on the inner side of the first splicing ring (2), and a second limiting groove (9) is provided on the inner side of the second splicing ring (3). After the first splicing ring (2) and the second splicing ring are spliced outside the inner tube (1), the annular groove formed by the first limiting groove (6) and the second limiting groove (9) is rotationally matched with the limiting convex ring (5).

2. The corrosion-resistant bearing according to claim 1, wherein: The movable connection mechanism includes a clamping groove (7) and a clamping block (8), and the clamping groove (7) is in clamping fit with the clamping block (8). The clamping groove (7) is provided at both ends of the first splicing ring (2), and the clamping groove (7) is integrally injection-molded with the first splicing ring (2). The clamping block (8) is provided at both ends of the second splicing ring (3), and the clamping block (8) is integrally injection-molded with the second splicing ring (3).

3. The corrosion-resistant bearing according to claim 1, wherein: The length of the inner tube (1) is between 33 - 43 mm, and the outer diameter of the inner tube (1) is between 34 - 48 mm.

4. The corrosion-resistant bearing according to claim 1, characterized in that: The outer diameter of the outer ring formed after the first splicing ring (2) and the second splicing ring (3) are spliced is between 51 - 72 mm, and the thickness of the outer ring is between 16 - 20 mm.

5. A corrosion-resistant bearing according to claim 1, characterized in that: The diameter of the through hole (4) is between 25 - 36 mm.

6. The corrosion-resistant bearing according to claim 1, characterized in that: The wall thickness of the inner tube (1) is between 4.5 - 6 mm.

7. The corrosion-resistant bearing according to claim 1, wherein: The inner tube (1), the first splicing ring (2), and the second splicing ring (3) are all made of polyoxymethylene material.

Images