An energy-saving water pump

Abstract

This application relates to the technical field of water pumps, and in particular, to an energy-saving water pump, which includes an energy-saving water pump with a unique structural design. The pump consists of a housing, a flow channel, a drainage impeller, a suction impeller, and a stator unit; by setting a magnetic conductive plate in the housing to separate the water inlet cavity and the water outlet cavity, and using the rotating magnetic field generated by the stator unit to drive the drainage impeller and the suction impeller with the rotor unit to rotate, at the same time, the frictional loss of the sealing component is eliminated, and low-friction rotation can be achieved in combination with magnetic levitation bearings; in addition, the optimized design also includes details such as a magnetic conductive ring with an anti-rust coating, a flow channel port with a special shape, and a metal mesh protection device at the water inlet; this application achieves the effects of significantly improving energy efficiency, reducing operating noise, and extending the service life of the equipment.

Description

Technical Field

[0001] This application relates to the technical field of water pumps, and particularly to an energy-saving water pump. Background Art

[0002] As an essential device in industrial production and daily life, water pumps play an irreplaceable role in multiple fields such as liquid transportation and water supply systems. With the increasing attention to energy efficiency in society, energy conservation and environmental protection have become one of the core driving forces for technological innovation globally. Especially in the context of energy shortages and intensifying environmental protection pressures, traditional high-energy-consuming water pumps have been gradually phased out due to their inefficient operation modes, and have been replaced by a new generation of products that pay more attention to energy conservation and high efficiency. This transformation not only helps to reduce operating costs but also conforms to the long-term goal of sustainable development.

[0003] To address this challenge, the industry has generally taken various measures to optimize the performance of water pumps. For example, by improving the design of the flow channels inside the pump to reduce the resistance loss generated during fluid flow; introducing high-performance alloys or composite materials to manufacture key components to reduce frictional losses caused by mechanical contact; at the same time, upgrading and revising the motor drive part to strive to improve the energy transfer efficiency during the transmission process. In addition, there are also many cases where external cooling devices are used to enhance the heat dissipation capacity or special seals are assembled to extend the service life. Nevertheless, these improvements mostly focus on the local detail adjustment level and have not formed a systematic solution.

[0004] However, the existing technologies still expose some significant problems that need to be overcome. First of all, traditional water pumps usually rely on natural cooling mechanisms to handle the heat accumulation generated during the working process, which often results in poor heat dissipation effects, thereby affecting the ability of the equipment to operate stably for a long time; secondly, relatively large frictional resistances will inevitably be generated in the mechanical seal link, and the energy consumed additionally in this part not only increases the power burden but also shortens the service life of related components; in summary, how to effectively improve the heat dissipation conditions and reduce the wear degree of the mechanical seal part has become the key factor restricting the further improvement of the energy efficiency of water pumps. Summary of the Invention

[0005] To overcome the deficiencies of the above-mentioned existing technologies, this application provides an energy-saving water pump. By optimizing the flow channel design, it can utilize the water flow to improve its own heat dissipation conditions and eliminate the frictional losses at the mechanical seal part.

[0006] This application is realized through the following technical solutions:

[0007] An energy-saving water pump, comprising a housing, a flow channel, a drainage impeller, a suction impeller and a stator unit. The housing is of a cylindrical structure, and an inlet cover and an outlet cover are respectively fixed at both ends of the housing. A magnetic conductive plate is fixed between the inlet cover and the housing and between the outlet cover and the housing. An inlet chamber is formed between the inlet cover and the magnetic conductive plate, and an outlet chamber is formed between the outlet cover and the magnetic conductive plate. The flow channel is fixed between the two magnetic conductive plates, and the end of the flow channel extends out of the magnetic conductive plate. The drainage impeller is placed in the outlet chamber, and the drainage impeller is rotatably connected to the water outlet end of the flow channel. The suction impeller is placed in the inlet chamber, and the suction impeller is rotatably connected to the water outlet end of the flow channel. A rotor unit is provided at the end of the drainage impeller and the suction impeller close to the magnetic conductive plate. The stator unit is fixed on the flow channel through a heat-conducting plate, and the stator unit is placed in the closed space formed between the magnetic conductive plate and the housing to provide an axial rotating magnetic field for the rotor unit to drive the drainage impeller and the suction impeller to rotate.

[0008] By adopting the above technical solution, the energy-saving water pump can significantly improve the heat dissipation performance of the flow channel while improving the working efficiency, and effectively avoid the leakage problem and maintenance cost caused by using traditional seals. First, in the design of the flow channel, the suction impeller introduces external water flow into the flow channel, and under the action of the drainage impeller, the water flow is led out of the flow channel. The water flow can carry the heat on the flow channel. The heat-conducting plate and the stator unit, as the main heat sources, are directly installed on the flow channel, which can not only efficiently transfer heat to the external environment, but also optimize the temperature distribution of the whole system, thereby reducing the working temperature of key components such as the rotor unit, prolonging its service life and improving the operation stability. Second, there is no need to rely on traditional mechanical contact sealing devices, such as rubber sealing rings or stuffing boxes, which fundamentally eliminates the risk of seal failure, reduces friction loss, further improves the overall efficiency and saves energy consumption. In addition, this design scheme cleverly utilizes the independent chamber layout formed by the cylindrical structure housing, the inlet cover and the outlet cover, ensuring that the water flow path is clear and reasonable, minimizing the eddy current phenomenon and its accompanying energy loss. This layout also helps to enhance the internal pressure balance ability of the equipment, so that it can maintain a good working state even during long-term continuous operation. Moreover, under the action of the stable rotating magnetic field provided by both ends of the stator unit, the waste of magnetic energy is avoided, and the suction impeller and the drainage impeller can be driven to operate at the same time, ensuring a smooth and stable pumping process, and thus achieving higher energy utilization rate. To sum up, the energy-saving water pump proposed by the present invention successfully solves many problems existing in the prior art with its unique construction concept, especially making breakthrough progress in two important aspects of improving heat dissipation efficiency and abandoning vulnerable sealing components, and provides a more reliable and efficient solution for related fields.

[0009] Optionally, the magnetic conductive plate includes an outer fixed ring and an inner fixed ring arranged concentrically, and a magnetic conductive ring is fixed between the outer fixed ring and the inner fixed ring.

[0010] By adopting the above technical solution, the magnetic conduction plate is composed of an outer fixing ring and an inner fixing ring, and a magnetic conduction ring is arranged between the outer fixing ring and the inner fixing ring, which can effectively improve the magnetic field conduction efficiency, ensure the uniform distribution of the magnetic field generated by the mover unit, and thus improve the rotational stability of the drainage impeller and the suction impeller. At the same time, this structural design helps to reduce the material usage, achieve lightweight while ensuring performance, and reduce the production cost.

[0011] Further optionally, an anti-rust coating is provided on the surface of the magnetic conduction ring.

[0012] By adopting the above technical solution, setting an anti-rust coating on the surface of the magnetic conduction ring can effectively prevent the magnetic conduction ring from rusting due to oxidation, thereby extending the service life of the magnetic conduction ring and ensuring its long-term stable magnetic conduction performance. This design helps to improve the overall reliability of the energy-saving water pump and reduce the maintenance cost.

[0013] Optionally, the drainage impeller includes an inner clamping plate and an outer clamping plate, and a plurality of blades are fixed between the inner clamping plate and the outer clamping plate.

[0014] By adopting the above technical solution, the plurality of blades fixed between the inner clamping plate and the outer clamping plate can effectively enhance the water flow guiding ability of the drainage impeller, ensure the stable transmission of the water flow in the flow channel, and thus improve the working efficiency of the water pump. At the same time, this design helps to optimize the overall structural strength of the drainage impeller and extend its service life.

[0015] Optionally, positioning columns for fixing bearings are provided in the middle of both the water inlet cover and the water outlet cover.

[0016] By adopting the above technical solution, providing positioning columns for fixing bearings in the middle of the water inlet cover and the water outlet cover can accurately define the position of the bearings, thereby ensuring the stable rotation of the drainage impeller and the suction impeller in the flow channel. This design effectively reduces the mechanical wear caused by position offset, improves the reliability and service life of the water pump operation. At the same time, the stable structure helps to reduce vibration and noise and improve the overall working performance.

[0017] Optionally, arc-shaped protrusions are provided in the middle of both the water inlet cover and the water outlet cover; arc-shaped grooves are provided at the edges of the water inlet end and the water outlet end of the flow channel.

[0018] By adopting the above technical solution, providing arc-shaped protrusions in the middle of the water inlet cover and the water outlet cover can optimize the directionality of the water flow when entering and discharging, reduce the energy loss caused by water flow impact, and improve the working efficiency of the water pump. Providing arc-shaped grooves at the edges of the water inlet end and the water outlet end of the flow channel can further reduce the resistance when the water flow passes through, avoid causing turbulence, thereby improving the smoothness of the water flow and reducing noise.

[0019] Optionally, the stator unit includes a plurality of stator cores, and mounting holes for fixing the stator cores are evenly distributed along the circumferential direction on the heat conducting plate.

[0020] By adopting the above technical solution, the stator unit can be firmly fixed on the heat conducting plate, ensuring its stability during operation and avoiding position deviation caused by vibration or impact; at the same time, the design of evenly distributed mounting holes makes the force more balanced, improving the reliability of the overall structure. This design solution also helps to simplify the assembly process and improve production efficiency.

[0021] Optionally, the drainage impeller and the water suction impeller are rotationally connected to the flow channel through magnetic levitation bearings. The magnetic levitation bearings include a first permanent magnet fixed on the inner ring and a second permanent magnet fixed on the outer ring, and a magnetic repulsive force is formed between the first permanent magnet and the second permanent magnet.

[0022] By adopting the above technical solution, the setting of the magnetic levitation bearings enables the drainage impeller and the water suction impeller to achieve stable non-contact rotation on the flow channel, thus significantly reducing the energy loss and noise problems caused by mechanical friction. Specifically, the magnetic repulsive force between the first permanent magnet and the second permanent magnet can effectively support the rotational movement of the impeller, avoiding the problem of performance degradation caused by wear of traditional mechanical bearings, and at the same time improving the operating efficiency and service life of the system.

[0023] Optionally, positioning grooves adapted to the mover unit are provided on the drainage impeller and the water suction impeller.

[0024] By adopting the above technical solution, the positioning grooves adapted to the mover unit provided on the drainage impeller and the water suction impeller can accurately define the position of the mover unit, ensuring its accurate acting relationship with the rotating magnetic field generated by the stator unit. This not only improves the stability of the drainage impeller and the water suction impeller during rotation, but also enhances the energy conversion efficiency, thus achieving a more efficient water flow conveying effect.

[0025] Optionally, a water outlet is provided on the water outlet cover; a plurality of water inlets are provided on the side of the water inlet cover, and a metal mesh is provided on the water inlets.

[0026] By adopting the above technical solution, the provision of a water outlet on the water outlet cover can ensure the smooth discharge of water flow, improving the working efficiency and stability of the water pump; the setting of a plurality of water inlets in the axial direction of the water inlet cover can increase the water inlet flow rate and improve the water suction capacity of the water pump. At the same time, the addition of a metal mesh at the water inlets can effectively filter impurities, preventing foreign objects from entering the interior of the water pump and causing damage or blockage, thereby extending the service life of the equipment and ensuring the operating reliability.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. In the flow channel design of the present application, the water absorption impeller introduces external water flow into the flow channel, and under the action of the drainage impeller, the water flow is led out from the flow channel. The water flow can carry the heat on the flow channel, and the heat conduction plate and the stator unit, as the main heat sources, are directly installed on the flow channel. This not only enables efficient heat transfer to the external environment but also optimizes the temperature distribution of the entire system, thereby reducing the operating temperature of key components such as the rotor unit, extending its service life, and improving the operating stability;

[0029] 2. The present application does not rely on traditional mechanical contact sealing devices, such as rubber sealing rings or stuffing boxes. This fundamentally eliminates the risk of seal failure, reduces frictional losses at the same time, further improves the overall efficiency, and saves energy consumption;

[0030] 3. The interaction between the stator unit and the rotor unit in the present application generates a stable rotating magnetic field, which can effectively drive the drainage impeller and the water absorption impeller to rotate simultaneously, avoiding waste of magnetic energy, reducing energy loss during the mechanical transmission process, and thus reducing energy consumption;

[0031] 4. The compact integrated design among the components of the present application optimizes the system layout, enhances the synergy between the functional modules, fundamentally breaks through the limitations of the traditional architecture, and provides the possibility for achieving a higher level of energy conversion. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the energy-saving water pump described in Embodiment 1;

[0033] Figure 2 is a schematic layout diagram of the magnetic conduction plate described in Embodiment 1;

[0034] Figure 3 is a front view structural diagram of the magnetic conduction plate described in Embodiment 1;

[0035] Figure 4 is a three-dimensional structural diagram of the drainage impeller described in Embodiment 1;

[0036] Figure 5 is a schematic layout diagram of the blades in the drainage impeller described in Embodiment 1;

[0037] Figure 6 is a structural diagram of the positioning post described in Embodiment 1;

[0038] Figure 7 is a structural diagram of the stator core and the heat conduction plate described in Embodiment 1;

[0039] Figure 8 is a schematic structural diagram of the energy-saving water pump described in Embodiment 2;

[0040] Figure 9It is a schematic structural diagram of the flow channel described in the second embodiment;

[0041] Figure 10 It is a schematic layout structure diagram of the positioning groove described in the second embodiment on the drainage impeller;

[0042] Figure 11 It is a schematic structural diagram of the water inlet cover described in the second embodiment;

[0043] Figure 12 It is a schematic structural diagram of the magnetic levitation bearing described in the third embodiment.

[0044] In the figure: 1. Housing; 2. Water outlet cover; 21. Water outlet; 3. Water inlet cover; 31. Water inlet; 32. Metal mesh; 4. Magnetic conductive plate; 41. Inner fixing ring; 42. Magnetic conductive ring; 43. Outer fixing ring; 5. Flow channel; 51. Heat conducting plate; 52. Heat sink; 53. Arc groove; 6. Stator unit; 61. Stator core; 611. Mounting hole; 62. Silicon steel sheet; 7. Drainage impeller; 71. Inner clamping plate; 72. Blade; 73. Outer clamping plate; 8. Water absorption impeller; 9. Rotor unit; 10. Positioning column; 11. Arc protrusion; 12. Positioning groove; 13. First permanent magnet; 14. Second permanent magnet; 15. Third permanent magnet; 16. Fourth permanent magnet. Specific embodiments

[0045] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present application.

[0046] Embodiment 1

[0047] Refer to Figures 1 to 2, an embodiment of the present application discloses an energy-saving water pump, which includes a housing 1, a flow channel 5, a drainage impeller 7, a suction impeller 8 and a stator unit 6; wherein, the housing 1 has a cylindrical structure, and an inlet cover 3 and an outlet cover 2 are respectively fixed at both ends by means of bolt fastening, and a magnetic conductive plate 4 is fixed between the inlet cover 3 and the housing 1 and between the outlet cover 2 and the housing 1; wherein, an inlet cavity is formed between the inlet cover 3 and the magnetic conductive plate 4, an outlet cavity is formed between the outlet cover 2 and the magnetic conductive plate 4, and a sealed space is formed between the magnetic conductive plate 4 and the housing 1; the flow channel 5 has a tubular structure and is fixed between the two magnetic conductive plates 4, and the end of the flow channel 5 extends outside the magnetic conductive plate 4; the drainage impeller 7 is located in the outlet cavity, and the suction impeller 8 is located in the inlet cavity, and both are rotatably connected to the flow channel 5; in addition, a rotor unit 9 is respectively arranged at the end parts of the drainage impeller 7 and the suction impeller 8 close to the magnetic conductive plate 4, and the stator unit 6 is fixed on the flow channel 5 through a heat conducting plate 51 and is placed in the enclosed space formed between the magnetic conductive plate 4 and the housing 1 to provide an axial rotating magnetic field for the rotor unit 9 to drive the drainage impeller 7 and the suction impeller 8 to rotate.

[0048] Referring to Figure 2 , as the prior art, the rotor unit 9 can be several permanent magnets or exciting bodies, and can be fixed to the end parts of the drainage impeller 7 and the suction impeller 8 close to the stator unit 6 by means of bonding or bolt fastening, and can rotate under the action of the axial rotating magnetic field provided by the rotor unit 9, thereby driving the drainage impeller 7 and the suction impeller 8 to rotate to convert mechanical rotational kinetic energy into the pressure energy of water; it should be noted that the rotor units 9 evenly distributed on the sides of the drainage impeller 7 and the suction impeller 8 can also be equivalent to impellers, and convert rotational kinetic energy into the pressure energy of water during rotation.

[0049] Specifically, referring to Figure 3 , the magnetic conductive plate 4 is composed of an outer fixing ring 43 and an inner fixing ring 41, and a magnetic conductive ring 42 is fixed between the outer fixing ring 43 and the inner fixing ring 41. The magnetic conductive ring 42 can be made of high magnetic permeability materials such as silicon steel sheets 62 or iron-nickel alloys, which can effectively guide the magnetic field distribution and thus improve the magnetic circuit efficiency; in order to prevent oxidation and corrosion, a rust-proof coating, such as an epoxy resin coating or other coatings with good corrosion resistance, is coated on the surface of the magnetic conductive ring 42.

[0050] For the drainage impeller 7, referring to Figures 4 to 5, which mainly includes an inner splint 71 and an outer splint 73, and multiple blades 72 are fixed between the inner splint 71 and the outer splint 73; among them, the blades 72, the inner splint 71 and the outer splint 73 can be integrally designed or combined designed, and the blades 72 are usually made of stainless steel or aluminum alloy, with excellent wear resistance and corrosion resistance characteristics; according to actual needs, carbon fiber reinforced plastic can also be selected as the material of the blades 72, which not only reduces the weight but also maintains high strength; it should be noted that the water suction impeller 8 can also adopt the same structural design as the water drainage impeller 7, and among them, the rotation direction of the blades 72 in the water suction impeller 8 can be arranged in the opposite direction to that of the blades 72 in the water drainage impeller 7.

[0051] In addition, referring to Figure 6 , positioning columns 10 are provided at the middle positions of the water inlet cover 3 and the water outlet cover 2 to accurately install bearings and ensure the coaxiality requirements of the entire rotor system. Among them, the outer sides of the water drainage impeller 7 and the water suction impeller 8 can be rotatably connected to the positioning columns 10 through bearings; at the same time, considering the smoothness of the water flow entering the pump, the ends of the positioning columns 10 are designed in the form of arc protrusions 11; correspondingly, arc bevels 53 with a certain angle are provided at the edges of the inlet and outlet of the flow channel 5, so that the medium flows in and out more smoothly.

[0052] Referring to Figure 7 , the stator unit 6 includes several stator cores 61, windings are provided on the stator cores 61, the stator cores 61 are composed of multiple silicon steel sheets 62 stacked and combined, and an insulating layer is coated on the outer surface of the silicon steel sheets 62; the stator cores 61 are composed of multiple silicon steel sheets 62 stacked and combined and coated with an insulating layer, which can effectively reduce eddy current losses and improve energy conversion efficiency; at the same time, the setting of the insulating layer further reduces the electrical energy loss between the cores, thereby improving the operating efficiency and stability of the entire water pump; it should be noted that the stator cores 61 can also be composed of multiple silicon steel sheet strips 62 coated with an insulating layer, and are plastically bound by windings to be installed on the heat conduction plate 51.

[0053] The heat conduction plate 51 has a circular disc-like structure, can be made of aluminum material, has the characteristics of light weight and good heat conduction performance; among them, the heat conduction plate 51 is fixed on the flow channel 5, and can efficiently carry the heat generated by the stator unit 6 by the water flow in the flow channel 5 to ensure the stability of the water pump operation, without additional heat dissipation mechanism, so as to achieve the effect of energy saving. When designing, mounting holes 611 for fixing the stator cores 61 are evenly distributed along the circumferential direction on the heat conduction plate 51 to ensure its stability during operation and avoid position deviation caused by vibration or impact.

[0054] The implementation principle of this embodiment is as follows: The energy-saving water pump can significantly improve the heat dissipation performance of the flow channel 5 while enhancing the working efficiency, and effectively avoid the leakage problems and maintenance costs caused by using traditional seals. First, in the design of the flow channel 5, the suction impeller 8 introduces external water flow into the flow channel 5, and under the action of the drainage impeller 7, the water flow is led out from the flow channel 5. The water flow can carry the heat on the flow channel 5. The heat conducting plate 51 and the stator unit 6, as the main heat sources, are directly installed on the flow channel 5. They can not only efficiently transfer heat to the external environment, but also optimize the temperature distribution of the entire system, thereby reducing the working temperature of key components such as the rotor unit 9, extending its service life and improving the operation stability. Second, the magnetic coupling technology is adopted. The magnetic conductive plate 4 is used to isolate the stator unit 6 from the rotor unit 9, eliminating the need to rely on traditional mechanical contact seals, such as rubber sealing rings or stuffing boxes. This fundamentally eliminates the risk of seal failure, reduces frictional losses at the same time, further improves the overall efficiency, and saves energy consumption. In addition, this design scheme cleverly utilizes the independent chamber layout formed by the cylindrical structure housing 1, the water inlet cover 3, and the water outlet cover 2, ensuring a clear and reasonable water flow path, minimizing the eddy current phenomenon and its accompanying energy losses. This layout also helps to enhance the internal pressure balance ability of the equipment, enabling it to maintain a good working state even during long-term continuous operation. Moreover, under the action of the stable rotating magnetic field provided by both ends of the stator unit 6, the waste of magnetic energy is avoided, and the suction impeller 8 and the drainage impeller 7 can be driven to operate simultaneously, ensuring a smooth and stable pumping process, and thus achieving a higher energy utilization rate. In summary, the energy-saving water pump proposed by the present invention, with its unique structural concept, successfully solves many problems existing in the prior art, especially making breakthrough progress in two important aspects: improving the heat dissipation efficiency and abandoning vulnerable sealing components, providing a more reliable and efficient solution for related fields.

[0055] Embodiment Two

[0056] Referring to Figures 8 to 9 , the difference between this embodiment and Embodiment One is that, in order to further enhance the heat dissipation effect of the water flow, heat dissipation fins 52 for increasing the heat dissipation area are provided on the inner wall of the flow channel 5. The heat dissipation fins 52 can be arranged in the direction of the water flow, and can be in a straight structure or a spiral structure.

[0057] Referring to Figure 10 , in order to ensure that the rotor unit 9 is correctly installed in place and operates reliably during work, positioning grooves 12 with appropriate size specifications are pre-machined in the corresponding areas of the drainage impeller 7 and the suction impeller 8 close to the end of the stator unit 6 for the stator unit 6 to be inserted, enabling quick and accurate assembly. The water outlet cover 2 is equipped with a water outlet pipe joint in a standard interface form for convenient connection to the subsequent pipeline network.

[0058] At the same time, referring to Figure 11, the water inlet cover 3 also reserves several water inlets 31 on the water inlet side, and a metal mesh 32 for filtration is provided at the water inlet 31. The small-aperture inlet of the metal mesh 32 can not only meet the flow supply but also play a role in preliminary impurity interception, protecting the downstream components from damage.

[0059] The implementation principle of the embodiment of this application is as follows: This embodiment is mainly applied underwater. The added heat sink 52 can effectively improve the heat exchange efficiency inside the flow channel 5, ensure that the water pump maintains a stable temperature state during high-load operation, thereby extending the service life of the equipment and improving the overall working efficiency.

[0060] Embodiment Three

[0061] Refer to Figure 12 , the difference between this embodiment and Embodiment One is that in order to avoid the friction loss problem caused by traditional mechanical seals, a magnetic levitation bearing is used here instead of a conventional ball or sliding type bearing; specifically, the magnetic levitation bearing includes a first permanent magnet 13 inside and a second permanent magnet 14 arranged around the outside. The mutual repulsion between the two generates sufficient supporting force to lift the rotating component, avoiding additional power consumption caused by physical contact in the radial direction, and at the same time greatly extending the maintenance cycle; by the same principle, permanent magnets that repel each other can also be arranged axially on the positioning post 10 and the impeller respectively to avoid additional power consumption caused by physical contact in the axial direction.

[0062] The implementation principle of this embodiment is as follows: The setting of the magnetic levitation bearing enables the drainage impeller 7 and the water absorption impeller 8 to achieve non-contact and stable rotation on the flow channel 5, thereby significantly reducing the energy loss and noise problems caused by mechanical friction.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, not to limit it; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of this application.

Claims

1. An energy-saving water pump, characterized in that, It includes a housing (1), a flow channel (5), a drainage impeller (7), a suction impeller (8) and a stator unit (6). The housing (1) is of a cylindrical structure. An inlet cover (3) and an outlet cover (2) are respectively fixed at both ends of the housing (1), and a magnetic conductive plate (4) is fixed between the inlet cover (3) and the housing (1) and between the outlet cover (2) and the housing (1); an inlet cavity is formed between the inlet cover (3) and the magnetic conductive plate (4), and an outlet cavity is formed between the outlet cover (2) and the magnetic conductive plate (4); the flow channel (5) is fixed between the two magnetic conductive plates (4), and the end of the flow channel (5) extends out of the magnetic conductive plate (4); the drainage impeller (7) is placed in the outlet cavity, and the drainage impeller (7) is rotatably connected to the outlet end of the flow channel (5); the suction impeller (8) is placed in the inlet cavity, and the suction impeller (8) is rotatably connected to the inlet end of the flow channel (5); both the suction impeller (8) and the drainage impeller (7) include an inner clamping plate and an outer clamping plate in a circular ring structure, and a plurality of blades (72) are fixed between the inner clamping plate and the outer clamping plate; positioning columns (10) for fixing bearings are provided in the middle of both the inlet cover (3) and the outlet cover (2), and arc-shaped protrusions (11) for guiding the flow are provided on the positioning columns (10); the inner clamping plate is rotatably connected to the flow channel (5), and the outer clamping plate is rotatably connected to the positioning column (10); moving sub-units (9) are provided at the ends of both the drainage impeller (7) and the suction impeller (8) close to the magnetic conductive plate (4); the stator unit (6) is fixed to the flow channel (5) through a heat conducting plate (51), and the stator unit (6) is placed in the closed space formed between the magnetic conductive plate (4) and the housing (1) to provide an axial rotating magnetic field for the moving sub-unit (9) to drive the drainage impeller (7) and the suction impeller (8) to rotate; the magnetic conductive plate (4) includes an outer fixed ring (43) and an inner fixed ring (41) arranged concentrically, and a magnetic conductive ring (42) is fixed between the outer fixed ring (43) and the inner fixed ring (41); an outlet (21) is provided on the outlet cover (2); a plurality of inlets (31) are provided on the side of the inlet cover (3), and a metal mesh (32) is provided on the inlets (31).

2. The energy-saving water pump according to claim 1, characterized in that, An anti-rust coating is provided on the surface of the magnetic conductive ring (42).

3. The energy-saving water pump according to claim 1, characterized in that Arc-shaped bevels (53) are provided at the edges of the inlet end and the outlet end of the flow channel (5).

4. The energy-saving water pump according to claim 1, wherein The stator unit (6) includes a plurality of stator cores (61), and mounting holes (611) for fixing the stator cores (61) are evenly distributed in the circumferential direction on the heat conducting plate (51).

5. The energy-saving water pump according to claim 1, characterized in that, The drainage impeller (7) and the suction impeller (8) are rotatably connected to the flow channel (5) through magnetic suspension bearings. The magnetic suspension bearings include a first permanent magnet (13) fixed on the inner ring and a second permanent magnet (14) fixed on the outer ring, and a magnetic repulsive force is formed between the first permanent magnet (13) and the second permanent magnet (14).

6. The energy-saving water pump according to claim 1, characterized in that, Positioning grooves (12) adapted to the moving sub-unit (9) are provided on the drainage impeller (7) and the suction impeller (8).

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