Vacuum pump rotor bearing thrust collar
By designing a detachable pressure ring body and shaft sleeve structure, the problem of insufficient adaptability of traditional vacuum pump rotor bearing pressure rings is solved, achieving multi-shaft diameter adaptation and cost reduction.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PINGHU RUIYANG PRECISION MACHINERY
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional vacuum pump rotor bearing pressure rings are an integral structure, which makes it difficult to adapt to rotor shafts with different shaft diameters, resulting in high replacement costs.
The design incorporates a detachable pressure ring body and bushing structure, allowing for adaptation to different shaft diameters by replacing the bushing and bearing, thus reducing replacement frequency.
This allows the same set of pressure rings to adapt to the rotor shaft requirements of various shaft diameters, reducing production costs.
Smart Images
Figure CN224532986U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum pump technology, specifically to a vacuum pump rotor bearing pressure ring. Background Technology
[0002] The rotor bearing retaining ring is a ring-shaped metal component that is fitted onto the rotor shaft. Its main function is to position and reinforce the rotor. The inner and outer diameters of the rotor retaining ring correspond to the rotor shaft and rotor core.
[0003] Traditional vacuum pump rotor bearing pressure rings typically employ an integrated design, meaning one set of pressure rings can only match rotor shafts of one shaft diameter, making it difficult to meet the rotor shaft replacement requirements under different operating conditions. When it is necessary to adapt to rotor shafts of different shaft diameters, only the entire set of bearing pressure rings can be replaced, significantly increasing production costs.
[0004] Based on the above, this utility model proposes a vacuum pump rotor bearing pressure ring, which can effectively solve the above problems. Utility Model Content
[0005] This utility model addresses the shortcomings of the existing technology by providing a vacuum pump rotor bearing pressure ring.
[0006] This utility model is achieved through the following technical solution: A vacuum pump rotor bearing retaining ring includes a retaining ring body, the retaining ring body having a shaft hole for the rotor shaft to pass through, a bushing detachably connected to one side of the retaining ring body, a bearing connected to the rotor shaft being installed inside the bushing, one side of the bearing abutting against a protrusion inside the bushing, and an annular groove being provided on the other side of the bearing, a retaining ring being installed in the annular groove to restrict the bearing from moving axially along the bushing.
[0007] According to the above technical solution, as a further preferred technical solution, a groove is provided on one side of the pressure ring body, and an internal thread is provided on the inner wall of the outer side of the groove.
[0008] According to the above technical solution, as a further preferred technical solution, one end of the bushing is provided with a connecting part, and the outer surface of the connecting part is provided with an external thread that mates with the internal thread.
[0009] According to the above technical solution, as a further preferred technical solution, a plurality of positioning pins evenly distributed at equal angles are fixedly connected to the side of the pressure ring body away from the bushing.
[0010] According to the above technical solution, as a further preferred technical solution, the outer periphery of the pressure ring body is provided with a plurality of fixing holes evenly distributed at equal angles.
[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model provides a vacuum pump rotor bearing pressure ring. By setting a pressure ring body, a bushing is detachably connected to one side of the pressure ring body. When it is necessary to match rotor shafts with different shaft diameters, it is not necessary to adjust or replace the entire bearing pressure ring. Only the bushing and bearing with the corresponding inner diameter specification need to be replaced according to the specific shaft diameter of the rotor shaft to complete the adaptation. Thus, the same set of pressure ring body can adapt to the needs of rotor shafts with different shaft diameters, and at the same time, it reduces the production cost. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the bushing structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention. Detailed Implementation
[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.
[0014] A vacuum pump rotor bearing retaining ring includes a retaining ring body 1. The retaining ring body 1 has a shaft hole 11 for the rotor shaft to pass through. A bushing 2 is detachably connected to one side of the retaining ring body 1. A bearing 3 connected to the rotor shaft is installed inside the bushing 2. One side of the bearing 3 abuts against a protrusion 21 inside the bushing 2. An annular groove 22 is provided on the other side of the bearing 3. A retaining ring 4 is installed in the annular groove 22 to restrict the bearing 3 from moving axially along the bushing 2.
[0015] This utility model sets up a pressure ring body 1, with a bushing 2 detachably connected to one side of the pressure ring body 1. When it is necessary to match rotor shafts with different shaft diameters, it is not necessary to adjust or replace the entire bearing pressure ring. Only the bushing and bearing with the corresponding inner diameter specification need to be replaced according to the specific shaft diameter of the rotor shaft to complete the adaptation. Thus, the same set of pressure ring body 1 can adapt to the needs of rotor shafts with different shaft diameters, and at the same time, it reduces the production cost.
[0016] Furthermore, in another embodiment, a groove 12 is provided on one side of the pressure ring body 1, and an internal thread 13 is provided on the outer inner wall of the groove 12. A connecting part 23 is provided at one end of the bushing 2, and an external thread 24 is provided on the outer surface of the connecting part 23 to engage with the internal thread 13.
[0017] The external thread 24 of the connecting part 23 engages with the internal thread 14 of the pressure ring body 1 to achieve a stable connection between the bushing 2 and the pressure ring body 3, and facilitates disassembly, assembly and individual replacement.
[0018] Furthermore, in another embodiment, a plurality of positioning posts 14 evenly distributed at equal angles are fixedly connected to the side of the pressure ring body 1 away from the bushing 2.
[0019] By setting the positioning post 14, the installation position of the pressure ring body 1 is determined, thereby improving installation accuracy and efficiency.
[0020] Furthermore, in another embodiment, the outer periphery of the pressure ring body 1 is provided with a plurality of fixing holes 15 evenly distributed at equal angles.
[0021] By setting the fixing hole 15, the pressure ring is connected to the vacuum pump rotor through fasteners, which increases the stability of the connection.
[0022] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the vacuum pump rotor bearing pressure ring of this utility model, and can produce the positive effects described in this utility model.
[0023] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.
[0024] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model 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 direct connection or an indirect connection through an intermediate medium; and 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.
[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A vacuum pump rotor bearing pressure ring, characterized in that: The device includes a pressure ring body (1), which has a shaft hole (11) for the rotor shaft to pass through. A bushing (2) is detachably connected to one side of the pressure ring body (1). A bearing (3) connected to the rotor shaft is installed inside the bushing (2). One side of the bearing (3) abuts against a protrusion (21) inside the bushing (2). An annular groove (22) is provided on the other side of the bearing (3). A retaining ring (4) is installed in the annular groove (22) to restrict the bearing (3) from moving axially along the bushing (2).
2. The vacuum pump rotor bearing pressure ring according to claim 1, characterized in that: The pressure ring body (1) has a groove (12) on one side, and the inner wall of the outer side of the groove (12) is provided with an internal thread (13).
3. The vacuum pump rotor bearing pressure ring according to claim 2, characterized in that: One end of the bushing (2) is provided with a connecting part (23), and the outer surface of the connecting part (23) is provided with an external thread (24) that engages with the internal thread (13).
4. The vacuum pump rotor bearing pressure ring according to claim 1, characterized in that: The pressure ring body (1) is fixedly connected to a plurality of positioning pins (14) that are evenly distributed at equal angles on the side away from the bushing (2).
5. A vacuum pump rotor bearing pressure ring according to claim 1, characterized in that: The outer periphery of the pressure ring body (1) is provided with a plurality of fixing holes (15) that are evenly distributed at equal angles.