Magnetic suspension thrust disc structure
By using a magnetic levitation thrust disk structure, and utilizing the repulsive force between the first and second disks and friction limiting components, the problem of pump instability under axial force is solved, thus achieving long-term stable operation and extended service life of the pump.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-17
- Publication Date
- 2026-04-14
Smart Images
Figure CN121854468A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of magnetic levitation structure technology for pumps, specifically to a magnetic levitation thrust disk structure. Background Technology
[0002] A pump is a machine that draws in and discharges fluids. It can extract or pressurize fluids into containers or lift liquids to a higher place. For example, water pumps are widely used in industrial, agricultural and domestic water supply fields. When the pump is running, the dynamic reaction force generated by the change in the flow direction of the liquid after passing through the impeller will cause the fluid flow in the pump chamber to generate a dynamic reaction force on the pump shaft. Moreover, the asymmetry of the front and rear cover plates of the impeller and the asymmetry of the pressure distribution in the impeller flow channel will also generate axial force. The presence of axial force will prevent the water pump from operating stably for a long time, reducing its service life and overall performance. Therefore, balancing the axial force of the water pump is the key to improving the overall performance and safety of the water pump. Summary of the Invention
[0003] In view of the above-mentioned shortcomings in the related technologies, the purpose is to provide a magnetic levitation thrust disk structure to solve the technical problem that axial force in the related technologies causes the pump to be unable to operate stably for a long time, thus reducing its service life and performance. The technical solution to achieve the objective is: a magnetic levitation thrust disk structure, including: The first disk is connected to the pump shaft and rotates together with the pump shaft; The second disk is connected to the bracket and is positioned opposite the first disk. The second disk and the first disk are mutually repulsive due to their similar polarities. The friction limiting component is disposed between the first disk and the second disk, separating the first disk and the second disk. There is a magnetic levitation gap between the first disk and the second disk. A portion of the friction limiting component is disposed on the first disk and rotates with the first disk, while another portion is disposed on the second disk and is in a fixed state.
[0004] Furthermore: the first disk includes: a first disk body, a first through hole at the middle position of the first disk body, the first through hole being fitted onto the pump shaft, the first disk body being connected to the pump shaft, and a first groove near the edge of the first disk body; And a first magnet, disposed in the first groove.
[0005] Furthermore: the second disk includes: a second disk body connected to the bracket, the second disk body having a second through hole at the middle position and a second groove near the edge; A second magnet is disposed in the second groove. The second magnet and the first magnet are of the same polarity and repel each other. The magnetic levitation gap exists between the second magnet and the first magnet.
[0006] Furthermore, it also includes at least one key disposed between the first disc body and the pump shaft.
[0007] Furthermore: the friction limiting component includes: a first friction limiting member, disposed at the third groove on the first disc body, partially protruding from the third groove, and spaced apart from the first magnet; And a second friction limiting member is provided at the fourth groove on the second disc body, and partially protrudes from the fourth groove. The second friction limiting member is spaced apart from the second magnet, and one side of the second friction limiting member contacts one side of the first friction limiting member.
[0008] Furthermore: the first friction limiting member includes: a first friction body, disposed at the third groove, and partially protruding from the third groove; And a limiting retaining ring, which is set at the fifth groove on the outer circle of the first friction body, and is positioned between the first friction body and the first disc.
[0009] Furthermore, the first friction body has a circular ring-shaped structure.
[0010] Furthermore: the limiting retaining ring is an O-ring.
[0011] Furthermore: the second friction limiting member includes: a second friction body disposed at the fourth groove, partially protruding from the fourth groove, one side of the second friction body contacting one side of the first friction body, and the second friction body having a notch; A limiting stop pin is provided on the second disc body, with one end extending into the notch.
[0012] Furthermore, the second friction body has a circular ring-shaped structure.
[0013] The above technical solution has the following beneficial effects: the magnetic levitation thrust disk structure, compared with related technologies, is equipped with a first disk, a second disk, and a friction limiting component; The first disk is connected to the pump shaft and rotates with it. The second disk is connected to the bracket and is fixed. The first and second disks repel each other due to their similar polarities, creating a repulsive force that achieves a magnetic levitation effect. A friction limiting component is positioned between the first and second disks. Part of the friction limiting component is located on the first disk and rotates with it, while the other part is located on the second disk and is fixed. The friction limiting component provides support. Therefore, due to the magnetic levitation effect and the supporting function of the friction limiting component, the position change of the pump shaft during rotation is relatively small, achieving the purpose of balancing axial forces. This overcomes the technical problem that axial force can cause pumps to be unable to operate stably for a long time, reducing their service life and performance. It achieves the technical effect of balancing axial force, improving pump operation performance, and extending service life, and is practical. Attached Figure Description
[0014] Figure 1 This is a sectional view of the final assembly. Figure 2 A partial cross-sectional view of the first disk, the second disk, and the friction limiting assembly; Figure 3 This is a partial cross-sectional view of the first disc body; Figure 4 This is a partial cross-sectional view of the first friction limiting component; Figure 5 This is a partial cross-sectional view of the second disk; Figure 6 This is a partial cross-sectional view of the second friction body; In the diagram: 10. First disk, 10-1. First disk body, 10-11. First through hole, 10-12. First groove, 10-13. Third groove, 20. Second disk, 20-1. Second disk body, 20-11. Second through hole, 20-12. Second groove, 20-13. Fourth groove, 20-2. Second magnet, 30. Friction limiting assembly, 30-1. First friction limiting component, 30-11. First friction body, 30-11-1. Fifth groove, 30-12. Limiting ring, 30-2. Second friction limiting component, 30-21. Second friction body, 30-21-1. Notch, 30-22. Limiting pin, 40. Magnetic levitation gap, 50. Key, 100. Pump shaft, 200. Bracket. Detailed Implementation
[0015] To make the content easier to understand, the following detailed description is provided with reference to specific embodiments and accompanying drawings; The magnetic levitation thrust disk structure solves the technical problem in related technologies where axial force causes the pump to be unable to operate stably for a long time, reducing its service life and performance. It can be manufactured and used, achieving the positive effects of balancing axial force, improving pump operating performance, and extending service life. The overall concept is as follows: Implementation Method
[0016] like Figure 1 As shown; the magnetic levitation thrust disk structure includes: The first disk 10 is connected to the pump shaft 100 and rotates together with the pump shaft 100; The second disk 20 is connected to the bracket 200 and is positioned opposite the first disk 10. The second disk 20 and the first disk 10 are like-pairs and repel each other. And a friction limiting component 30, which is disposed between the first disk 10 and the second disk 20, separating the first disk 10 and the second disk 20. There is a magnetic levitation gap 40 between the first disk 10 and the second disk 20. A part of the friction limiting component 30 is disposed on the first disk 10 and rotates with the first disk 10, while another part is disposed on the second disk 20 and is in a fixed state. Specifically, during implementation, the first disk 10 is connected to the pump shaft 100 and rotates together with the pump shaft 100. The second disk 20 is connected to the bracket 200 and is in a fixed state. The first disk 10 and the second disk 20 are like-particles that repel each other, forming a repulsive thrust, which has the effect of magnetic levitation. Furthermore, the friction limiting component 30 is set between the first disk 10 and the second disk 20. A part of the friction limiting component 30 is set on the first disk 10 and rotates together with the first disk 10, while the other part is set on the second disk 20 and is in a fixed state. The friction limiting component 30 has a supporting function. Therefore, due to the magnetic levitation effect and the supporting function of the friction limiting component 30, the position change of the pump shaft 100 is relatively small when it rotates, thus achieving the purpose of balancing the axial force. Another implementation method: like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown; in implementation, the first disk 10 includes: a first disk body 10-1, the first disk body 10-1 having a first through hole 10-11 at its middle position, the first through hole 10-11 being fitted onto the pump shaft 100, the first disk body 10-1 being connected to the pump shaft 100, and the first disk body 10-1 having a first groove 10-12 near its edge; and a first magnet 10-2 disposed in the first groove 10-12; The first disc 10-1 is fitted onto the pump shaft 100 through the first through hole 10-11. The first disc 10-1 and the pump shaft 100 are tightly fitted together, making assembly relatively convenient. A first groove 10-12 is provided, for example: the first groove 10-12 is a circular groove, which is conducive to the insertion and positioning of the first magnet 10-2; The first magnet 10-2 is a permanent magnet, for example, made of NdFeb, and is inserted into the first groove 10-12, making assembly relatively convenient; The second disk 20 includes: a second disk body 20-1 connected to the bracket 200, the second disk body 20-1 having a second through hole 20-11 at its middle position and a second groove 20-12 near its edge; and a second magnet 20-2 disposed in the second groove 20-12, the second magnet 20-2 being like-particles and repelling the first magnet 10-2, and having the magnetic levitation gap 40 between the second magnet 20-2 and the first magnet 10-2; The second disc 20-1 is connected to the bracket 200. For example, after the second disc 20-1 is engaged with the bracket 200, it is connected by screws, and the second disc 20-1 is reliably positioned and in a fixed state. A second groove 20-12 is provided, for example, the second groove 20-12 is a circular groove, which is conducive to the insertion and positioning of the second magnet 20-2; The second magnet 20-2 is a permanent magnet, for example, made of NdFeb, and is inserted into the second groove 20-12, making assembly relatively convenient; The second magnet 20-2 and the first magnet 10-2 are like poles and repel each other. For example, when the S pole on the first magnet 10-2 faces the second magnet 20-2, the S pole on the second magnet 20-2 also faces the first magnet 10-2. Using the principle of like poles repelling each other, a repulsive force will be generated, thereby achieving the effect of magnetic levitation. The value of the magnetic levitation gap 40 is not fixed and can vary. It depends on the parameters of the first magnet 10-2 and the second magnet 20-2, such as size and material. In order to better describe the present invention and facilitate understanding of the technical solution of the present invention, the value of the magnetic levitation gap 40 is three millimeters. Those skilled in the art, after seeing the disclosed content and combining it with the existing technology, can directly and without doubt know how to set it, without needing to put in creative effort or conduct excessive experiments. Another implementation method: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown; in implementation, the friction limiting assembly 30 includes: a first friction limiting member 30-1, disposed at the third groove 10-13 on the first disc 10-1, partially protruding from the third groove 10-13, and spaced apart from the first magnet 10-2; and a second friction limiting member 30-2, disposed at the fourth groove 20-13 on the second disc 20-1, partially protruding from the fourth groove 20-13, the second friction limiting member 30-2 being spaced apart from the second magnet 20-2, and one side of the second friction limiting member 30-2 contacting one side of the first friction limiting member 30-1; The first friction limiting member 30-1 includes: a first friction body 30-11, which is disposed at the third groove 10-13 and partially protrudes from the third groove 10-13; and a limiting retaining ring 30-12, which is disposed at the fifth groove 30-11-1 on the outer circle of the first friction body 30-11 and is disposed between the first friction body 30-11 and the first disc 10-1. The first friction body 30-11 has a circular ring structure, for example, the material is polytetrafluoroethylene; The limiting ring 30-12 is an O-ring, which is set at the fifth groove 30-11-1. It is beneficial to position the first friction limiting member 30-1 and the third groove 10-13, so that the first friction limiting member 30-1 can rotate together with the first disk 10, and the structure has relatively good reliability. The second friction limiting member 30-2 includes: a second friction body 30-21, disposed at the fourth groove 20-13, partially protruding from the fourth groove 20-13, one side of the second friction body 30-21 contacting one side of the first friction body 30-11, and having a notch 30-21-1 on the second friction body 30-21; and a limiting stop pin 30-22, disposed on the second disc 20-1, one end of which extends into the notch 30-21-1; The second friction body 30-21 has a circular ring structure, for example, the material is hard alloy; The limiting pin 30-22 is a cylindrical pin that is inserted into the second disk 20-1. One end extends into the notch 30-21-1 to form a block. When the first friction limiting member 30-1 rotates together with the first disk 10, the second friction body 30-21 will not rotate with it, and the structural reliability is relatively good. The first friction limiting member 30-1 on the friction limiting assembly 30 is disposed on the first disk 10 and rotates together with the first disk 10. The second friction limiting member 30-2 is disposed on the second disk 20 and is in a fixed state. One side of the second friction body 30-21 contacts one side of the first friction body 30-11, and the friction limiting assembly 30 has a supporting function. Another implementation method: like Figure 1 As shown; it also includes: at least one key 50, which is disposed between the first disk body 10-1 and the pump shaft 100, which facilitates a tighter connection between the first disk body 10-1 and the pump shaft 100, and enables the first disk body 10 to rotate synchronously when the pump shaft 100 rotates; Structures in the prior art: See Figure 1 The pump shaft 100 and the bracket 200 are common structures in the prior art and are not the inventive points of this invention. They are only used to better describe this invention and facilitate understanding of the technical solution of this invention. Those skilled in the art can directly and without doubt know how to set them up after seeing the disclosed content, without needing to put in creative effort or conduct excessive experiments. In the description, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience or simplification of the description, rather than indicating a specific orientation that must be present; the operation process described in the embodiments is not an absolute usage step, and corresponding adjustments can be made in actual use; Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the words “first,” “second,” and similar terms used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components, and similarly, the words “a” or “a” and similar terms do not determine a quantity limitation, but rather indicate the presence of at least one, as determined by the content of the embodiments; The above description is only a preferred embodiment, but the scope of protection is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the disclosed technology, based on the technical solution and inventive concept, should be included within the scope of protection.
Claims
1. A magnetic levitation thrust disk structure, characterized in that, include: The first disk is connected to the pump shaft and rotates together with the pump shaft; The second disk is connected to the bracket and is positioned opposite the first disk. The second disk and the first disk are mutually repulsive due to their similar polarities. The friction limiting component is disposed between the first disk and the second disk, separating the first disk and the second disk. There is a magnetic levitation gap between the first disk and the second disk. A part of the friction limiting component is disposed on the first disk and rotates with the first disk, while another part is disposed on the second disk and is in a fixed state.
2. The magnetic levitation thrust disk structure according to claim 1, characterized in that: The first disk includes: a first disk body, a first through hole at the middle position of the first disk body, the first through hole being fitted onto the pump shaft, the first disk body being connected to the pump shaft, and a first groove near the edge of the first disk body; And a first magnet, disposed in the first groove.
3. The magnetic levitation thrust disk structure according to claim 2, characterized in that: The second disk includes: a second disk body connected to the bracket, wherein the second disk body has a second through hole at the middle position and a second groove near the edge; A second magnet is disposed in the second groove. The second magnet and the first magnet are of the same polarity and repel each other. The magnetic levitation gap exists between the second magnet and the first magnet.
4. The magnetic levitation thrust disk structure according to claim 2, characterized in that: Also includes: At least one key is provided between the first disc body and the pump shaft.
5. The magnetic levitation thrust disk structure according to claim 3, characterized in that: The friction limiting component includes: a first friction limiting member, which is disposed at the third groove on the first disc body, partially protruding from the third groove, and spaced apart from the first magnet; And a second friction limiting member is provided at the fourth groove on the second disc body, and partially protrudes from the fourth groove. The second friction limiting member is spaced apart from the second magnet, and one side of the second friction limiting member contacts one side of the first friction limiting member.
6. The magnetic levitation thrust disk structure according to claim 5, characterized in that: The first friction limiting member includes: a first friction body, disposed at the third groove, and partially protruding from the third groove; And a limiting retaining ring, which is set at the fifth groove on the outer circle of the first friction body, and is positioned between the first friction body and the first disc.
7. The magnetic levitation thrust disk structure according to claim 6, characterized in that: The first friction body has a circular ring-shaped structure.
8. The magnetic levitation thrust disk structure according to claim 7, characterized in that: The limiting retaining ring is an O-ring.
9. The magnetic levitation thrust disk structure according to claim 6, characterized in that: The second friction limiting member includes: a second friction body disposed at the fourth groove, partially protruding from the fourth groove, one side of the second friction body contacting one side of the first friction body, and having a notch on the second friction body; A limiting stop pin is provided on the second disc body, with one end extending into the notch.
10. The magnetic levitation thrust disk structure according to claim 9, characterized in that: The second friction body has a circular ring-shaped structure.