Magnetic levitation shaftless pump pushing structure

Abstract

This invention relates to the field of magnetic levitation shaftless pump propulsion, and discloses a magnetic levitation shaftless pump propulsion structure, including a shell, a rotor cylinder disposed inside the shell, a coil winding mechanism disposed on the outer diameter of the middle part of the rotor cylinder, and outer conical monopole permanent magnets fixedly installed on both outer diameters of the rotor cylinder. Several blades forming an inner impeller are fixedly installed on the inner diameter of the rotor cylinder. End caps are threaded to both ends of the shell, and inner conical monopole permanent magnets are fixedly installed on the inner sides of the end caps. The magnetic poles of the inner conical monopole permanent magnets are the same as the inner and outer conical magnetic poles of the corresponding outer conical monopole permanent magnets, thus generating a repulsive force that levitates the inner cylinder. This invention adopts a permanent magnet magnetic levitation contactless support and a staggered dual rotor tooth pole drive structure, which has the advantages of noise reduction, energy saving, high torque, and high control precision. It is also equipped with electromagnetic shielding and water flow rectification structures, resulting in stable operation and strong versatility.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation shaftless pump propulsion, specifically to a magnetic levitation shaftless pump propulsion structure. Background Technology

[0002] Pump propulsion structures, as highly efficient fluid transport power devices, are widely used in underwater vehicles, industrial conveying, medical devices, and other fields due to their advantages such as high critical speed, high efficiency, and low radiated noise. They are a core component of modern fluid power systems. As various fields increasingly demand higher precision, stability, low noise, and energy efficiency, traditional shafted pump propulsion structures are gradually failing to meet practical application needs. Shaftless pump propulsion technology, with its characteristics of no mechanical transmission and small space occupation, has become an important direction for industry development. Furthermore, the combination of magnetic levitation technology and shaftless pump propulsion is a key path to achieving high-performance equipment operation.

[0003] Currently, most shaftless pump propulsion structures employ ordinary bearing support or simple magnetic levitation designs, which have numerous technical drawbacks. Shaftless pump propulsion structures supported by ordinary bearings suffer from high mechanical friction, high operating losses, and significant noise. Long-term operation can easily lead to component wear, reducing equipment lifespan and operational stability. Simple magnetic levitation designs often suffer from difficulties in magnetic levitation control and insufficient levitation precision, making it difficult to achieve stable levitation of the rotor cylinder. Furthermore, magnetic field interference easily occurs between the coil windings and the magnetic levitation bearings, affecting equipment operating accuracy. Additionally, insufficient torque output makes it impossible to achieve precise control of the impeller within the blade structure, hindering adaptation to high-speed, high-precision operating scenarios.

[0004] In addition, the existing magnetic levitation shaftless pump push structure has a complex circuit design, cumbersome component assembly, and high maintenance costs. Furthermore, it lacks an effective protection mechanism in the event of a sudden power outage or malfunction, which can easily cause damage to core components such as the rotor cylinder. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a magnetically levitated shaftless pump pusher structure, which solves the technical problems of high mechanical friction, low levitation accuracy, difficult control, weak anti-interference, insufficient torque, and poor operational reliability in existing pump pusher structures.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a magnetic levitation shaftless pump push structure, comprising a housing, an inner rotor cylinder being disposed within the housing, a coil winding mechanism being disposed on the outer diameter of the middle portion of the rotor cylinder, outer conical monopole permanent magnets being fixedly installed on both outer diameters of the rotor cylinder, and a plurality of blades constituting an inner impeller being fixedly installed on the inner diameter of the rotor cylinder, both ends of the housing being threadedly connected to end caps, and inner conical monopole permanent magnets being fixedly installed on the inner sides of the end caps, wherein the inner and outer conical magnetic poles of the inner conical monopole permanent magnets are identical with the corresponding outer conical monopole permanent magnets, thereby generating a repulsive force that levitates the inner cylinder.

[0007] Preferably, a junction box is also fixedly installed at the top of the housing, and the junction box is electrically connected to the coil winding mechanism.

[0008] Preferably, the coil winding mechanism includes a first single-pole permanent magnet rotor and a second single-pole permanent magnet rotor, both of which are fixedly mounted on the outer diameter of the rotor cylinder and have opposite magnetic poles.

[0009] Preferably, both the first single-pole permanent magnet rotor and the second single-pole permanent magnet rotor are provided with fifty first corresponding teeth on their outer diameters, and the first corresponding teeth on the outer diameter of the first single-pole permanent magnet rotor are deflected by 3.6° compared to the first corresponding teeth on the outer diameter of the second single-pole permanent magnet rotor.

[0010] Preferably, the coil winding mechanism further includes a stator outer frame, on the inner wall of which eight sets of iron core windings are uniformly fixedly installed. Each inner end of the iron core winding is fixedly installed with an arc-shaped plate and the interval between adjacent arc-shaped plates is 1.8°. Each inner end of the arc-shaped plate is provided with six second corresponding teeth.

[0011] Preferably, a conical guide plate is fixedly installed on the outer end of one side of the end cap, and a plurality of guide blades are uniformly fixedly installed on the inner wall of the conical guide plate.

[0012] Preferably, a tail nozzle is fixedly installed on the outer end of the other end cap.

[0013] Preferably, a control component is also fixedly installed on one side of the outer diameter of the rotor cylinder, the control component including a PCB board and a Hall element.

[0014] Preferably, it also includes a multi-stage pumping structure, which includes multiple rotor cylinders and coil winding mechanisms connected in series. The output of the previous stage serves as the input of the next stage. The shape of the inner impeller formed by the blades of each stage is optimized step by step according to the different pressures, and the rotor cylinders rotate at different speeds to achieve the purpose of step-by-step pressurization.

[0015] This invention provides a magnetically levitated shaftless pump pusher structure. It has the following beneficial effects:

[0016] 1. This invention employs a conical permanent magnet repulsion type magnetic levitation bearing to achieve contactless levitation operation of the rotor. This eliminates the frictional noise and energy loss of traditional mechanical bearings, improving the overall efficiency of pump operation. Simultaneously, it avoids failures such as component wear and corrosion, reducing subsequent maintenance costs, enhancing the stealth of underwater equipment operation, and adapting to various underwater operation scenarios.

[0017] 2. The coil winding mechanism of this invention features two single-pole permanent magnet rotors with opposite magnetic poles and a tooth position deflection of 3.6°, which, in conjunction with the magnetic pole adsorption effect of the stator core winding, provide greater driving torque to the rotor cylinder through bidirectional magnetic pole adsorption after energization. This balances the forces acting on the rotor, avoids the problem of vibration caused by single-rotor drive, and significantly improves the stability and power output performance during pump operation.

[0018] 3. The present invention allows for flexible adjustment of the spacing between the inner and outer conical permanent magnets via a threaded end cap, thereby changing the magnitude of the magnetic pole repulsion and precisely controlling the magnetic field strength and levitation force of the rotor cylinder. The levitation state can be adjusted according to different working conditions, medium pressure, and operating speed requirements, adapting to a variety of complex working scenarios and greatly improving the equipment's versatility. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a front sectional view of the present invention.

[0022] Figure 4 This is a schematic diagram of the coil winding mechanism in this invention;

[0023] Figure 5 This is a schematic diagram of the structure of the dual permanent magnet rotor in this invention;

[0024] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0025] The components include: 1. Outer shell; 2. Coil winding mechanism; 201. First single-pole permanent magnet rotor; 202. Second single-pole permanent magnet rotor; 203. First corresponding tooth; 204. Stator outer frame; 205. Iron core winding; 206. Arc plate; 207. Second corresponding tooth; 3. Outer conical single-pole permanent magnet; 4. Inner conical single-pole permanent magnet; 5. Rotor cylinder; 6. End cover; 7. Paddle blades forming an inner impeller; 8. Control components; 9. Conical guide plate; 10. Guide vane; 11. Tail nozzle; 12. Junction box. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example:

[0028] Please see the appendix Figure 1 -Appendix Figure 6 This invention provides a magnetically levitated shaftless pump pusher structure, such as... Figure 1 As shown, the device includes an outer shell 1, inside which a rotor cylinder 5 is housed. A coil winding mechanism 2 is mounted on the outer diameter of the middle part of the rotor cylinder 5. External conical monopole permanent magnets 3 are fixedly installed on the outer diameters of both sides of the rotor cylinder 5. Several blades forming an inner impeller 7 are fixedly installed on the inner diameter of the rotor cylinder 5. End caps 6 are threaded to both ends of the outer shell 1. Internal conical monopole permanent magnets 4 are fixedly installed on the inner sides of the end caps 6. The magnetic poles of the internal conical monopole permanent magnets 4 and the corresponding external conical monopole permanent magnets 3 have the same internal and external conical magnetic poles, thus generating a repulsive force that suspends the inner cylinder 5. In this embodiment, the outer shell 1 serves as the overall support and protection structure for the equipment, protecting all core working components and ensuring the overall structural stability. The rotor cylinder 5 is the core rotating base, undertaking the integrated installation of various functional structures. By utilizing the magnetic field principle of repulsion between like poles of inner and outer conical permanent magnets, the rotor cylinder 5 is kept in a non-contact magnetic levitation state throughout the entire process, completely eliminating the traditional mechanical bearing contact support structure. This eliminates vibration noise and energy loss caused by mechanical friction at the source, effectively improving the overall mechanical efficiency of the equipment. The impeller 7, which forms the inner impeller, rotates synchronously with the rotor cylinder 5, and can complete fluid suction, pressurization, and pushing operations, realizing the basic pump pushing function. The threaded end caps 6 at both ends can achieve fine-tuning of the position, providing a structural basis for levitation force adjustment.

[0029] In this embodiment, a junction box 12 is also fixedly installed on the top of the outer casing 1, and the junction box 12 is electrically connected to the coil winding mechanism 2. As a power access and circuit protection structure for the equipment, the junction box 12 can stably realize the circuit conduction between the external power supply and the internal coil winding mechanism 2, organize the equipment wiring structure, improve power safety and the overall structure of the equipment, and provide power guarantee for the continuous and stable operation of the entire electromagnetic drive system.

[0030] Furthermore, the coil winding mechanism 2 includes a first single-pole permanent magnet rotor 201 and a second single-pole permanent magnet rotor 202. Both the first single-pole permanent magnet rotor 201 and the second single-pole permanent magnet rotor 202 are fixedly mounted on the outer diameter of the rotor cylinder 5, and their magnetic poles are opposite. This dual-rotor reverse magnetic pole configuration allows for a bidirectional adsorption drive effect with the stator magnetic field. Compared to a single-rotor structure, this significantly increases the driving torque for the rotation of the rotor cylinder 5, while balancing force deviations during rotation, effectively improving equipment vibration and significantly enhancing overall operational stability and power output performance.

[0031] Furthermore, both the first single-pole permanent magnet rotor 201 and the second single-pole permanent magnet rotor 202 have fifty first corresponding teeth 203 on their outer diameters, and the first corresponding teeth 203 on the outer diameter of the first single-pole permanent magnet rotor 201 are deflected by 3.6° compared to the first corresponding teeth 203 on the outer diameter of the second single-pole permanent magnet rotor 202. This staggered tooth layout of the dual rotors provides structural support for refined drive control. Combined with the stator tooth structure, it effectively reduces the equipment's step angle, changes the traditional coarse rotation control mode of pump pushing, and makes the rotor operation more continuous and smooth, providing a foundation for high-precision speed and angle control.

[0032] Furthermore, the coil winding mechanism 2 also includes a stator frame 204. Eight sets of iron core windings 205 are uniformly fixedly installed on the inner wall of the stator frame 204. An arc-shaped plate 206 is fixedly installed on the inner end of each iron core winding 205, and the interval between adjacent arc-shaped plates 206 is 1.8°. Six second corresponding teeth 207 are provided on the inner end of each arc-shaped plate 206. The stator frame 204 is the fixed base for the iron core windings 205. The multiple sets of uniformly arranged iron core windings 205, combined with the toothed arc-shaped plate 206 structure, can accurately match and mesh with the first corresponding teeth 203 on the outer side of the rotor. The rotor can be driven to rotate precisely by simple electrical signals, which greatly improves the control accuracy and response sensitivity of the equipment and realizes the fine control of the rotor cylinder 5.

[0033] Furthermore, a conical guide plate 9 is fixedly installed on the outer end of one side of the end cap 6, and a plurality of guide vanes 10 are uniformly fixedly installed on the inner wall of the conical guide plate 9. The conical guide plate 9, together with the built-in guide vanes 10, can regulate and guide the fluid entering the equipment, divert and stabilize the flow, effectively suppress fluid turbulence and eddy currents, reduce fluid entry resistance, optimize fluid input state, and improve the stability of fluid transportation and overall transportation efficiency.

[0034] Furthermore, a tail nozzle 11 is fixedly installed on the outer end of the other end cap 6. As a fluid output converging structure, the tail nozzle 11 can gather, concentrate, and accelerate the pressurized fluid, regulate the direction of fluid ejection, concentrate fluid power, effectively enhance the pump output thrust of the equipment, and optimize the overall propulsion performance.

[0035] Furthermore, a control component 8 is fixedly installed on one side of the outer diameter of the rotor cylinder 5. The control component 8 includes a PCB board and a Hall element. The control component 8 can collect operating parameters such as rotor speed and magnetic field position in real time, accurately monitor the working status of the equipment, and provide real-time feedback of control electrical signals to accurately control the electromagnetic working status of the coil winding mechanism 2, ensuring that the rotor cylinder 5 operates at a uniform speed, stably and accurately, and realizing intelligent and precise speed control and stable operation of the equipment.

[0036] Furthermore, a multi-stage pump-push structure is also included. This structure comprises multiple rotor cylinders 5 connected in series and coil winding mechanisms 2. The output of the previous stage serves as the input of the next stage. Each stage rotor cylinder 5 is optimized step-by-step according to the shape of the inner impeller 7 formed by the blades under different pressure conditions, rotating at different speeds to achieve the purpose of progressively increasing pressure. The multi-stage series structure can realize multi-stage continuous pressurization of fluid. The inner impeller 7 formed by the blades at each stage is optimized in shape according to different pressure conditions, and is matched with differentiated speeds for operation. It can progressively increase the fluid delivery pressure, effectively breaking through the upper limit of single-stage pump-push pressurization. It can be adapted to complex fluid delivery and propulsion scenarios with high pressure and large flow, greatly expanding the application range of the equipment.

[0037] Working principle:

[0038] The inner rotor cylinder 5 is suspended by the repulsive force generated by the identical magnetic poles of the inner and outer conical surfaces of the inner and outer conical surfaces of the single-pole permanent magnet 4 and the outer conical permanent magnet 3, replacing the traditional bearing. This avoids the large amount of noise generated by the contact friction vibration of the traditional bearing, as well as the problem of reduced mechanical efficiency caused by the large amount of energy lost due to friction. The coil winding mechanism 2 uses six second corresponding teeth 207 on the inner side of eight sets of arc plates 206, replacing the arc shape of the traditional stator core. Only four electrical signals are needed. Each time a signal is sent, the first single-pole permanent magnet rotor 201 rotates 1.8°, so that the first corresponding teeth 203 align with the corresponding core winding. The second corresponding tooth 207 on the inner side of 205 adopts a front and rear dual rotor structure. Since the two are exactly 3.6° apart and have opposite magnetic poles, when energized, the S-stage of the iron core winding 205 attracts the first single-pole permanent magnet rotor 201 on the front side, and the N-stage attracts the second single-pole permanent magnet rotor 202. This allows the rotor cylinder 5 to obtain greater torque and stability while significantly shortening the step angle, achieving more precise control of the rotor cylinder 5. The movement of the outer conical single-pole permanent magnet 3 is controlled by rotating the end cover 6, controlling the distance between it and the inner conical single-pole permanent magnet 4, thereby controlling the magnetic field strength and levitation force received by the rotor cylinder 5, adapting to different scenarios.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetically levitated shaftless pump pusher structure, comprising a housing (1), characterized in that, The inner shell (1) is provided with a rotor cylinder (5). A coil winding mechanism (2) is provided on the outer diameter of the middle part of the rotor cylinder (5). An outer conical unipolar permanent magnet (3) is fixedly installed on both outer diameters of the rotor cylinder (5). Several blades are fixedly installed on the inner diameter of the rotor cylinder (5) to form an inner impeller (7). Both ends of the outer shell (1) are threaded with end caps (6). An inner conical unipolar permanent magnet (4) is fixedly installed on the inner side of the end cap (6). The inner conical unipolar permanent magnet (4) has the same inner and outer conical magnetic poles as the corresponding outer conical unipolar permanent magnet (3), thereby generating a repulsive force to suspend the inner cylinder (5).

2. The magnetic levitation shaftless pump pusher structure according to claim 1, characterized in that, A junction box (12) is also fixedly installed on the top of the outer casing (1), and the junction box (12) is electrically connected to the coil winding mechanism (2).

3. The magnetic levitation shaftless pump pusher structure according to claim 1, characterized in that, The coil winding mechanism (2) includes a first single-pole permanent magnet rotor (201) and a second single-pole permanent magnet rotor (202). The first single-pole permanent magnet rotor (201) and the second single-pole permanent magnet rotor (202) are both fixedly installed on the outer diameter of the rotor cylinder (5) and their magnetic poles are opposite.

4. The magnetic levitation shaftless pump pusher structure according to claim 3, characterized in that, The first single-pole permanent magnet rotor (201) and the second single-pole permanent magnet rotor (202) are each provided with fifty first corresponding teeth (203) on their outer diameters, and the first corresponding teeth (203) on the outer diameter of the first single-pole permanent magnet rotor (201) are deflected by 3.6° compared to the first corresponding teeth (203) on the outer diameter of the second single-pole permanent magnet rotor (202).

5. The magnetic levitation shaftless pump pusher structure according to claim 4, characterized in that, The coil winding mechanism (2) also includes a stator outer frame (204). Eight sets of iron core windings (205) are uniformly fixedly installed on the inner wall of the stator outer frame (204). An arc plate (206) is fixedly installed on the inner end of each iron core winding (205), and the interval between adjacent arc plates (206) is 1.8°. Six second corresponding teeth (207) are provided on the inner end of each arc plate (206).

6. The magnetic levitation shaftless pump pusher structure according to claim 1, characterized in that, A conical guide plate (9) is fixedly installed on the outer end of the end cap (6) on one side, and a number of guide blades (10) are evenly fixedly installed on the inner wall of the conical guide plate (9).

7. The magnetic levitation shaftless pump pusher structure according to claim 1, characterized in that, A tail nozzle (11) is fixedly installed on the outer end of the end cap (6) on the other side.

8. The magnetic levitation shaftless pump pusher structure according to claim 1, characterized in that, A control component (8) is also fixedly installed on one side of the outer diameter of the rotor cylinder (5). The control component (8) includes a PCB board and a Hall element.

9. The magnetic levitation shaftless pump pusher structure according to claim 1, characterized in that, It also includes a multi-stage pump push structure, which includes multiple rotor cylinders (5) connected in series and coil winding mechanism (2). The output of the front stage is used as the input of the rear stage. The shape of the inner impeller (7) formed by the blades under different pressures is optimized step by step, and the rotor cylinder (5) rotates at different speeds to achieve the purpose of step-by-step pressurization.

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