Self-aligning silicon carbide sliding bearing mechanism

Abstract

The utility model relates to the technical field of sliding bearing mechanisms, and discloses a self-aligning silicon carbide sliding bearing mechanism which comprises a shield pump shaft body, a bearing mounting mechanism is arranged outside the shield pump shaft body, and a centering bearing mechanism is arranged outside the bearing mounting mechanism. The centering bearing mechanism comprises a bearing movable assembly and a centering stabilizing assembly, and the centering stabilizing assembly is arranged outside the bearing movable assembly. According to the self-aligning silicon carbide sliding bearing mechanism, through the arranged centering bearing mechanism, in the using process, silicon carbide balls make contact with second arc grooves, the center line centering function, namely the self-aligning function, can be achieved, through the contact between the silicon carbide balls distributed in a crossed mode and the second arc grooves, the contact area of the second arc grooves is reduced, and the service life of the silicon carbide sliding bearing mechanism is prolonged. And while the normal operation function of the bearing can be ensured, the damage of the silicon carbide outer ring caused by the abrasion of the arc groove II is avoided through the indirect contact mode of the fixing groove and the arc groove II, and the durability of the bearing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding bearing mechanisms, in particular to a self-aligning silicon carbide sliding bearing mechanism. Background Art

[0002] The silicon carbide sliding bearing in the shielded pump adopts a straight cylindrical sliding bearing structure supported at two locations. The self-aligning bearing structure enables the center line of the shaft system and the center line of the bearing to achieve automatic centering function to avoid bearing offset.

[0003] According to a self-aligning silicon carbide sliding bearing mechanism disclosed in the patent website (authorization announcement number: CN209212788U), "The utility model provides a self-aligning silicon carbide sliding bearing mechanism, which includes a pump shaft, a shaft sleeve is mounted on the pump shaft, a sliding bearing is mounted on the shaft sleeve, a first sleeve is fixedly mounted on the sliding bearing, the surface of the first sleeve has a convex ring extending along the circumference of the first sleeve, a second sleeve is mounted on the first sleeve, and the inner wall of the second sleeve is in contact with the convex ring through an arc surface. Compared with the existing technology, the utility model can effectively solve the problem of sliding bearing deflection of magnetic pumps and shielded pumps; in particular, the problem of sliding bearing damage in multi-stage pumps and submersible pumps with long bearing spans and heavy loads."

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] During use, the utility model can achieve the center line centering effect through spherical contact by the inner wall of the second sleeve contacting the arc surface of the convex ring. However, in actual use, the first sleeve is in direct contact with the inner wall of the second sleeve. After a long time, as the shaft rotates, the first sleeve and the second sleeve in direct contact are prone to wear and damage. Therefore, it is necessary to improve a self-aligning silicon carbide sliding bearing mechanism to solve the above problem. Utility Model Content

[0006] The purpose of the present utility model is to provide a self-aligning silicon carbide sliding bearing mechanism to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a self-aligning silicon carbide sliding bearing mechanism, comprising a shielded pump shaft body, a bearing mounting mechanism is provided on the outside of the shielded pump shaft body, and a centering bearing mechanism is provided on the outside of the bearing mounting mechanism.

[0008] The centering bearing mechanism includes a bearing movable component and a centering and stabilizing component, and the centering and stabilizing component is arranged outside the bearing movable component.

[0009] Preferably, the bearing mounting mechanism includes a mounting ring, which is fixedly mounted on the outside of the shielded pump shaft. The internal thread of the mounting ring is installed with a bolt, and a connecting block is provided on the outside of the bolt to facilitate the installation of the centering bearing mechanism through the bearing mounting mechanism.

[0010] Preferably, thread grooves are provided at corresponding positions of the mounting ring and the bolts, and the bolts are threadedly installed inside the thread grooves provided inside the mounting ring, so as to facilitate fixation under normal conditions.

[0011] Preferably, holes are provided at corresponding positions of the connection block and the bolts, and the bolts are slidably installed inside the holes provided inside the connection block, so as to facilitate installation under normal conditions.

[0012] Preferably, the bearing movable assembly includes a silicon carbide connecting ring, which is fixedly mounted on the outside of the connecting block. Rolling groove 1 and rolling groove 2 are provided inside the silicon carbide connecting ring, and silicon carbide balls are provided inside rolling groove 1 and rolling groove 2 to facilitate the movement of the bearing through the bearing movable assembly.

[0013] Preferably, the silicon carbide balls are arranged in two rows, and the two rows of silicon carbide balls are cross-distributed inside the first rolling groove and the second rolling groove, thereby improving stability.

[0014] Preferably, the centering and stabilizing component includes a fixing groove, which is fixedly installed on the outside of the silicon carbide connecting ring, and an arc groove 1 is provided inside the fixing groove. The outside of the silicon carbide ball is provided with a silicon carbide outer ring, and an arc groove 2 is provided inside the silicon carbide outer ring, so that the sliding bearing can be self-aligned through the centering and stabilizing component.

[0015] Compared with the prior art, the present invention provides a self-aligning silicon carbide sliding bearing mechanism with the following beneficial effects:

[0016] 1. The self-aligning silicon carbide sliding bearing mechanism, through the provided centering bearing mechanism, can achieve centerline centering, that is, self-aligning function, by utilizing the contact between the silicon carbide balls and the arc groove 2 during use. The contact between the cross-distributed silicon carbide balls and the arc groove 2 reduces the contact area of the arc groove 2. While ensuring the normal operation of the bearing, the indirect contact between the fixed groove and the arc groove 2 avoids damage to the silicon carbide outer ring caused by wear of the arc groove 2, thereby improving the durability of the bearing.

[0017] 2. The self-aligning silicon carbide sliding bearing mechanism is connected to the connecting block by bolts through the bearing installation mechanism during use, so that the centering bearing mechanism can be installed between the shielded pump shaft, thereby realizing the function of installing the centering bearing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional appearance of the centering bearing mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the partial structure of the centering bearing mechanism of the utility model;

[0022] Figure 4 This is a partial exploded structural diagram of the centering bearing mechanism of the utility model;

[0023] Figure 5 This is a schematic diagram of the silicon carbide outer ring and its related structures of the utility model;

[0024] Figure 6 This is a schematic diagram of the exploded appearance structure of the bearing installation mechanism of the present invention.

[0025] In the figure: 1. Shielded pump shaft; 2. Bearing mounting mechanism; 21. Mounting ring; 22. Bolt; 23. Connecting block; 3. Centering bearing mechanism; 31. Bearing movable assembly; 311. Silicon carbide connecting ring; 312. Rolling groove 1; 313. Rolling groove 2; 314. Silicon carbide ball; 32. Centering and stabilizing assembly; 321. Fixed groove; 322. Arc groove 1; 323. Silicon carbide outer ring; 324. Arc groove 2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] Example 1:

[0029] See also Figure 1-5 The utility model provides a technical solution: a self-aligning silicon carbide sliding bearing mechanism, comprising a shielded pump shaft body 1, a bearing mounting mechanism 2 is arranged on the outside of the shielded pump shaft body 1, and a centering bearing mechanism 3 is arranged on the outside of the bearing mounting mechanism 2.

[0030] The centering bearing mechanism 3 includes a bearing movable component 31 and a centering and stabilizing component 32 . The centering and stabilizing component 32 is arranged outside the bearing movable component 31 .

[0031] Furthermore, the bearing movable component 31 includes a silicon carbide connecting ring 311, which is fixedly mounted on the outside of the connecting block 23. The interior of the silicon carbide connecting ring 311 is provided with a rolling groove 1 312 and a rolling groove 2 313. The interiors of the rolling groove 1 312 and the rolling groove 2 313 are both provided with silicon carbide balls 314, which facilitate the movement of the bearing through the bearing movable component 31.

[0032] Furthermore, the silicon carbide balls 314 are arranged in two rows, and the two rows of silicon carbide balls 314 are cross-distributed inside the first rolling groove 312 and the second rolling groove 313 , thereby improving stability.

[0033] Furthermore, the centering and stabilizing component 32 includes a fixing groove 321, which is fixedly installed on the outside of the silicon carbide connecting ring 311. An arc groove 1 322 is provided inside the fixing groove 321. A silicon carbide outer ring 323 is provided outside the silicon carbide ball 314, and an arc groove 2 324 is provided inside the silicon carbide outer ring 323, so that the sliding bearing can be self-aligned through the centering and stabilizing component 32.

[0034] Embodiment 2:

[0035] See also Figure 6 , and combined with Example 1, it is further obtained that the bearing mounting mechanism 2 includes a mounting ring 21, which is fixedly mounted on the outside of the shielded pump shaft 1, and the internal thread of the mounting ring 21 is installed with a bolt 22, and the outside of the bolt 22 is provided with a connecting block 23, which facilitates the installation of the centering bearing mechanism 3 through the bearing mounting mechanism 2.

[0036] Furthermore, thread grooves are provided at corresponding positions of the mounting ring 21 and the bolts 22 , and the bolts 22 are threadedly installed inside the thread grooves provided inside the mounting ring 21 , so as to facilitate fixation under normal conditions.

[0037] Furthermore, holes are provided at corresponding positions of the connecting block 23 and the bolts 22 , and the bolts 22 are slidably installed in the holes provided in the connecting block 23 , so as to facilitate installation under normal conditions.

[0038] In actual operation, when this device is used, the silicon carbide connecting ring 311 is slid on the outside of the mounting ring 21. After the connecting block 23 slides to the inside of the mounting ring 21 and is tightly attached to the mounting ring 21, the bolt 22 is inserted into the connecting block 23 and the bolt 22 is rotated so that the bolt 22 enters the inside of the mounting ring 21 to fix the connecting block 23. At this time, the installation of the bearing is completed. When the bearing is working, the contact between the silicon carbide ball 314 and the arc groove 2 324 can achieve the function of center line centering. Through the movement of the silicon carbide balls 314 cross-distributed in the rolling groove 1 312 and the rolling groove 2 313, and the fixing groove 321 and the arc groove 1 322 that limit the silicon carbide balls 314, the rotation of the silicon carbide balls 314 can be made more stable, the contact surface of the silicon carbide balls 314 with the arc groove 2 324 is reduced, and the arc groove 2 324 can be avoided from causing large wear, while preventing the silicon carbide outer ring 323 from being damaged.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A self-aligning silicon carbide sliding bearing mechanism, comprising a shielded pump shaft (1), characterized in that: A bearing mounting mechanism (2) is provided on the outside of the shielded pump shaft (1), and a centering bearing mechanism (3) is provided on the outside of the bearing mounting mechanism (2); The centering bearing mechanism (3) comprises a bearing movable component (31) and a centering and stabilizing component (32), and the centering and stabilizing component (32) is arranged outside the bearing movable component (31).

2. The self-aligning silicon carbide sliding bearing mechanism according to claim 1, characterized in that: The bearing mounting mechanism (2) comprises a mounting ring (21), wherein the mounting ring (21) is fixedly mounted on the outside of the shielded pump shaft (1), a bolt (22) is mounted on the internal thread of the mounting ring (21), and a connecting block (23) is provided on the outside of the bolt (22).

3. The self-aligning silicon carbide sliding bearing mechanism according to claim 2, characterized in that: Thread grooves are provided at corresponding positions of the mounting ring (21) and the bolt (22), and the bolt (22) is threadedly mounted inside the thread groove provided inside the mounting ring (21).

4. The self-aligning silicon carbide sliding bearing mechanism according to claim 2, characterized in that: The connection block (23) and the bolt (22) are provided with holes at corresponding positions, and the bolt (22) is slidably installed in the hole provided in the connection block (23).

5. The self-aligning silicon carbide sliding bearing mechanism according to claim 1, characterized in that: The bearing movable component (31) includes a silicon carbide connecting ring (311), which is fixedly installed on the outside of the connecting block (23). The interior of the silicon carbide connecting ring (311) is provided with a first rolling groove (312) and a second rolling groove (313), and the interiors of the first rolling groove (312) and the second rolling groove (313) are both provided with silicon carbide balls (314).

6. The self-aligning silicon carbide sliding bearing mechanism according to claim 5, characterized in that: The silicon carbide balls (314) are arranged in two rows, and the two rows of silicon carbide balls (314) are cross-distributed inside the first rolling groove (312) and the second rolling groove (313).

7. The self-aligning silicon carbide sliding bearing mechanism according to claim 6, characterized in that: The centering and stabilizing component (32) includes a fixing groove (321), which is fixedly installed on the outside of the silicon carbide connecting ring (311), and an arc groove 1 (322) is provided inside the fixing groove (321). A silicon carbide outer ring (323) is provided outside the silicon carbide ball (314), and an arc groove 2 (324) is provided inside the silicon carbide outer ring (323).

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