An energy-saving water pump featuring an axial magnetically suspended rotor

Abstract

The present invention relates to the technical field of water pumps, and discloses an energy-saving water pump with an axial magnetic suspension rotor feature, comprising a base, the bottom of the base is fixedly connected to a motor driver, the top of the base is fixedly connected to a lower bearing cover, a lower sliding bearing is fixedly installed on the lower bearing cover, a suspension magnetic ring 1 is fixedly installed on the top of the lower sliding bearing, and the suspension magnetic ring 1 and the lower sliding bearing are fixedly installed on the upper end surface of the lower bearing cover. The present invention rotates the permanent magnet rotor at high speed, and the permanent magnet rotor and all parts fixed on the permanent magnet rotor will not have any friction and contact with any mechanical parts in the axial direction, and are in an absolute suspension state, thereby greatly reducing the loss of useless work, greatly improving the energy efficiency and service life of the product, and increasing the flow rate of water through an impeller or a booster screw or a turbofan impeller with a special shape and structure, thereby increasing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of water pumps, and in particular to an energy-saving water pump with an axial magnetic suspension rotor feature. Background Art

[0002] A water pump is a machine that transports liquid or pressurizes liquid. It transfers the mechanical energy of the water pump prime mover or other external energy to the liquid to increase the liquid energy. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions, etc. For a long time, water pumps generally limit the rotor assembly in the axial direction through ball bearings or direct mechanical contact of the axial end faces. The stator of the water pump drives the rotor component and the impeller fixed on the rotor component to rotate at high speed, and the water or liquid is pushed or discharged under the high-speed rotation of the impeller. During the operation of the water pump, the rotor assembly will be subject to an axial reaction force. The limiting device of the rotor assembly in the water pump structure is to resist this reaction force. After most water pumps are designed, the direction of the axial reaction force on the rotor assembly during operation is determined and unidirectional. No matter how the water inlet and outlet directions of the water pump are designed, the rotor assembly will definitely be subject to at least one set of axial reaction forces, and the direction will be opposite to the water inlet or outlet direction. An energy-saving water pump with an axial magnetic levitation rotor feature fundamentally solves the current defect. The invention of an energy-saving water pump with an axial magnetic levitation rotor feature also solves the problem of wear and maintenance of ball bearings and end contact type limit devices. Summary of the invention

[0003] The object of the present invention is to provide an energy-saving water pump with an axial magnetically suspended rotor feature to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving water pump with an axial magnetic levitation rotor feature, comprising a base, the bottom of the base is fixedly connected to a motor driver, the top of the base is fixedly connected to a lower bearing cover, the lower bearing cover is fixedly installed with a lower sliding bearing, the top of the lower sliding bearing is fixedly installed with a suspension magnetic ring 1, the suspension magnetic ring 1 and the lower sliding bearing are fixedly installed on the upper end surface of the lower bearing cover, the top of the lower bearing cover is fixedly installed with a brushless motor housing, the inner wall of the brushless motor housing is installed with a stator, a stator wire frame is fixedly installed on the stator, a permanent magnet rotor is installed in the concentric circular cavity of the stator and the brushless motor housing, a suspension magnetic ring 1 and a suspension magnetic ring 2 are fixedly installed on the permanent magnet rotor and the rotating shaft, a suspension magnetic ring 2 is fixedly installed downward in the first suspension magnetic ring, and the suspension magnetic ring A suspended magnetic ring three is installed and fixed upward in the second seat, and a closed impeller is installed and fixed on the upper end of the rotating shaft. The rotating shaft, the first suspended magnetic ring, the second suspended magnetic ring, the second suspended magnetic ring, the third suspended magnetic ring and the closed impeller are attachments of the permanent magnet rotor. An upper bearing cover is installed and fixed on the upper part of the brushless motor housing, and an upper sliding bearing and a suspended magnetic ring four are fixedly installed on the upper bearing cover. The upper sliding bearing is located on the upper part of the suspended magnetic ring four. A guide cover is installed and fixed on the upper end face of the brushless motor housing, and 5 spiral guide vanes are designed on the guide cover structure. After assembly, the closed impeller is located at the inner hole of the guide cover, and the inner hole diameter of the guide cover is 0.5-1MM larger than the outer diameter of the circular wall of the closed impeller. The permanent magnet rotor and the attachments of the permanent magnet rotor are supported by the radial lower sliding bearing and the upper sliding bearing.

[0005] Preferably, a suspended magnetic ring 1 and a bushing are fixed on the top of the base, the permanent magnet rotor is fixed by a turbofan impeller-rotor glue injection-molded in plastic at one time or by a rotor glue injection-molded in plastic at one time, the turbofan impeller-rotor glue or the rotor glue is designed with a central hole flow channel running through the center, a suspended magnetic ring 2 is installed and fixed on the lower end of the turbofan impeller-rotor glue or the rotor glue, a booster screw is installed and fixed in the central hole flow channel of the rotor glue, an upper sliding bearing and a lower sliding bearing are respectively fixed on the upper and lower ends of the central axis of the turbofan impeller-rotor glue or the booster screw, a bushing is installed and fixed on the upper part of the brushless motor housing, and both ends of the rotating shaft are installed and fixed between the bushing and the bushing.

[0006] Preferably, one end of the brushless motor housing is installed and connected with a water inlet cover, and one end of the water inlet cover is installed and fixed with a shaft sleeve and a suspended magnetic ring four; the suspended magnetic ring four and the shaft sleeve are installed in a superimposed manner and the suspended magnetic ring four is on the end face of the water inlet cover, and the brushless motor housing is designed with a water outlet channel joint perpendicular to the axial direction of the water inlet cover, and the other end of the brushless motor housing is installed and fixed with a shaft sleeve and a suspended magnetic ring one; the suspended magnetic ring one and the shaft sleeve are installed in a superimposed manner and the suspended magnetic ring one is on the end face of the inner protrusion of the brushless motor housing, and a rotating shaft is installed and fixed between the shaft sleeve and the shaft sleeve.

[0007] Preferably, the permanent magnet rotor and the rotating shaft are fixed by one-time injection molding of plastic magnets, and the plastic magnets are punched and magnetized at the same time during the injection molding to become the permanent magnet rotor.

[0008] Preferably, the closed impeller has five spiral blades and an outer annular wall.

[0009] Preferably, the end faces of the second suspension magnetic ring and the first suspension magnetic ring are opposite to each other without mechanical contact, and the end faces have the same polarity.

[0010] Preferably, the end faces of the suspension magnetic ring four and the suspension magnetic ring three are opposite to each other without mechanical contact, and the end faces have the same polarity.

[0011] The present invention provides an energy-saving water pump with an axial magnetic suspension rotor feature. It has the following beneficial effects:

[0012] (1) The present invention rotates the permanent magnet rotor at high speed. The permanent magnet rotor and all parts fixed on the permanent magnet rotor will not have any friction or contact with any mechanical parts in the axial direction and will be in an absolute suspension state, thereby greatly reducing the loss of useless work and greatly improving the energy efficiency and service life of the product.

[0013] (2) The present invention can increase the flow rate of water through the impeller or booster screw or turbofan impeller with special shape and structure, thereby increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of Embodiment 1 of the present invention;

[0015] Figure 2 It is a three-dimensional structural diagram of the first embodiment of the present invention;

[0016] Figure 3 It is a partial structural diagram of the first embodiment of the present invention;

[0017] Figure 4 This is a structural diagram of a booster screw according to Embodiment 2 of the present invention;

[0018] Figure 5 This is a structural diagram of a turbofan impeller according to Embodiment 2 of the present invention;

[0019] Figure 6 This is a structural diagram of embodiment 3 of the present invention.

[0020] In the figure: 1 motor driver, 2 base, 3 lower bearing cover, 4 lower sliding bearing, 5 suspension magnetic ring one, 6 suspension magnetic ring two, 7 suspension magnetic ring one, 8 permanent magnet rotor, 9 suspension magnetic ring two, 10 suspension magnetic ring three, 11 suspension magnetic ring four, 12 upper sliding bearing, 13 upper bearing cover, 14 rotating shaft, 15 impeller, 16 guide cover, 17 brushless motor housing, 18 stator, 19 stator wire frame, 20 boost screw, 21 turbofan impeller. DETAILED DESCRIPTION

[0021] Embodiment 1:

[0022] like Figure 1-3 As shown:

[0023] An energy-saving water pump with an axial magnetic suspension rotor feature includes a base 2, a motor driver 1 is fixedly connected to the bottom of the base 2, a lower bearing cover 3 is fixedly connected to the top of the base 2, a lower sliding bearing 4 is fixedly installed on the lower bearing cover 3, a suspension magnetic ring 5 is fixedly installed on the top of the lower sliding bearing 4, the suspension magnetic ring 5 and the lower sliding bearing 4 are fixedly installed on the upper end surface of the lower bearing cover 3, a brushless motor housing 17 is fixedly installed on the top of the lower bearing cover 3, a stator 18 is installed on the inner wall of the brushless motor housing 17, and a The stator wire frame 19, the stator 18 and the brushless motor housing 17 are provided with a permanent magnet rotor 8 in the concentric cavities, the permanent magnet rotor 8 and the rotating shaft 14 are fixedly provided with a first suspension magnetic ring 7 and a second suspension magnetic ring 9, the first suspension magnetic ring 7 is provided with a second suspension magnetic ring 6 downwardly provided, the second suspension magnetic ring 9 is provided with a third suspension magnetic ring 10 upwardly provided, the upper end of the rotating shaft 14 is provided with a closed impeller 15, the rotating shaft 14, the first suspension magnetic ring 7, the second suspension magnetic ring 9, the second suspension magnetic ring 6, the third suspension magnetic ring 10 and the closed impeller 1 5 is an attachment of the permanent magnet rotor 8. An upper bearing cover 13 is fixedly mounted on the upper part of the brushless motor housing 17. An upper sliding bearing 12 and a suspension magnetic ring 4 11 are fixedly mounted on the upper bearing cover 13. The upper sliding bearing 12 is located on the upper part of the suspension magnetic ring 4 11. A guide cover 16 is fixedly mounted on the upper end surface of the brushless motor housing 17. The guide cover 16 is structurally designed with 5 spiral guide vanes. After the closed impeller 15 is assembled, it is located at the inner hole of the guide cover 16 and the inner hole diameter of the guide cover 16 is 0.5-1 / 2 larger than the outer diameter of the circular wall of the closed impeller 15. 1MM, the permanent magnet rotor 8 and the attachments of the permanent magnet rotor 8 are supported by the lower sliding bearing 4 and the upper sliding bearing 12, the permanent magnet rotor 8 and the rotating shaft 14 are fixed by one-time injection molding of plastic magnets, and the plastic magnets are punched and magnetized into the permanent magnet rotor 8 during injection molding, the closed impeller 15 has 5 spiral blades and an outer annular wall, the end faces of the suspended magnetic ring 2 6 and the suspended magnetic ring 1 5 are opposite and have no mechanical contact, and the end face polarity is the same, the end faces of the suspended magnetic ring 4 11 and the suspended magnetic ring 3 10 are opposite and have no mechanical contact, and the end face polarity is the same.

[0024] Embodiment 2:

[0025] like Figure 4-5 As shown:

[0026] An energy-saving water pump with an axial magnetic suspension rotor feature comprises a base 2, a motor driver 1 is fixedly connected to the bottom of the base 2, a lower bearing cover 3 is fixedly connected to the top of the base 2, a lower sliding bearing 4 is fixedly installed on the lower bearing cover 3, a suspension magnetic ring 5 is fixedly installed on the top of the lower sliding bearing 4, the suspension magnetic ring 5 and the lower sliding bearing 4 are fixedly installed on the upper end surface of the lower bearing cover 3, a brushless motor housing 17 is fixedly installed on the top of the lower bearing cover 3, a stator 18 is installed on the inner wall of the brushless motor housing 17, a stator wire frame 19 is fixedly installed on the stator 18, a permanent magnet rotor 8 is installed in the concentric circle cavity of the stator 18 and the brushless motor housing 17, and a suspension magnetic ring seat 7 and a suspension magnetic ring are fixedly installed on the permanent magnet rotor 8 and the rotating shaft 14. The second magnetic ring seat 9, the first suspended magnetic ring seat 7 has the second suspended magnetic ring 6 fixed downwardly installed, the second suspended magnetic ring seat 9 has the third suspended magnetic ring 10 fixed upwardly installed, the upper end of the rotating shaft 14 has the closed impeller 15 fixedly installed, the rotating shaft 14, the first suspended magnetic ring seat 7, the second suspended magnetic ring seat 9, the second suspended magnetic ring 6, the third suspended magnetic ring 10 and the closed impeller 15 are attachments of the permanent magnet rotor 8, the upper part of the brushless motor housing 17 has the upper bearing cover 13 fixedly installed, the upper bearing cover 13 has the upper sliding bearing 12 and the fourth suspended magnetic ring 11 fixedly installed, the upper sliding bearing 12 is located on the upper part of the fourth suspended magnetic ring 11, the upper end surface of the brushless motor housing 17 has the guide cover 16 fixedly installed, and the guide cover 16 is structurally designed with 5 spiral guide vanes, After the closed impeller 15 is assembled, it is located at the inner hole of the guide cover 16 and the inner hole diameter of the guide cover 16 is 0.5-1MM larger than the outer diameter of the circular wall of the closed impeller 15. The permanent magnet rotor 8 and the attachments of the permanent magnet rotor 8 are supported by the lower sliding bearing 4 and the upper sliding bearing 12. The top of the base 2 is fixed with a suspended magnetic ring 5 and a sleeve 23. The permanent magnet rotor 8 is fixed by a one-time plastic injection-molded turbofan impeller-rotor glue 22 or a one-time plastic injection-molded rotor glue 21. The turbofan impeller-rotor glue 22 or the rotor glue 21 is designed with a centrally-through middle hole flow channel. The lower end of the turbofan impeller-rotor glue 22 or the rotor glue 21 is fixed with a suspended magnetic ring 6. The rotor glue 21 is installed in the middle hole flow channel. The boost screw 20 is fixed, and the upper and lower ends of the central axis of the turbofan impeller-rotor rubber 22 or the boost screw 20 are respectively fixedly installed with an upper sliding bearing 12 and a lower sliding bearing 4, a bushing 23 is fixedly installed on the upper part of the brushless motor housing 17, and both ends of the rotating shaft 14 are fixedly installed between the bushing 23 and the bushing 23, the permanent magnet rotor 8 and the rotating shaft 14 are fixed by one-time injection molding of plastic magnets, and the plastic magnets are punched and magnetized into the permanent magnet rotor 8 at the same time of injection molding, the closed impeller 15 has 5 spiral blades and an outer annular wall, the end faces of the suspended magnetic ring 2 6 and the suspended magnetic ring 1 5 are opposite and have no mechanical contact, and the end face polarity is the same, the end faces of the suspended magnetic ring 4 11 and the suspended magnetic ring 3 10 are opposite and have no mechanical contact, and the end face polarity is the same.

[0027] Embodiment three:

[0028] like Figure 6 As shown:

[0029] An energy-saving water pump with an axial magnetic suspension rotor feature includes a base 2, a motor driver 1 is fixedly connected to the bottom of the base 2, a lower bearing cover 3 is fixedly connected to the top of the base 2, a lower sliding bearing 4 is fixedly installed on the lower bearing cover 3, a suspension magnetic ring 5 is fixedly installed on the top of the lower sliding bearing 4, the suspension magnetic ring 5 and the lower sliding bearing 4 are fixedly installed on the upper end surface of the lower bearing cover 3, a brushless motor housing 17 is fixedly installed on the top of the lower bearing cover 3, a stator 18 is installed on the inner wall of the brushless motor housing 17, and a The stator wire frame 19, the stator 18 and the brushless motor housing 17 are provided with a permanent magnet rotor 8 in the concentric cavities, the permanent magnet rotor 8 and the rotating shaft 14 are fixedly provided with a first suspension magnetic ring 7 and a second suspension magnetic ring 9, the first suspension magnetic ring 7 is provided with a second suspension magnetic ring 6 downwardly provided, the second suspension magnetic ring 9 is provided with a third suspension magnetic ring 10 upwardly provided, the upper end of the rotating shaft 14 is provided with a closed impeller 15, the rotating shaft 14, the first suspension magnetic ring 7, the second suspension magnetic ring 9, the second suspension magnetic ring 6, the third suspension magnetic ring 10 and the closed impeller 1 5 is an attachment of the permanent magnet rotor 8. An upper bearing cover 13 is fixedly mounted on the upper part of the brushless motor housing 17. An upper sliding bearing 12 and a suspension magnetic ring 4 11 are fixedly mounted on the upper bearing cover 13. The upper sliding bearing 12 is located on the upper part of the suspension magnetic ring 4 11. A guide cover 16 is fixedly mounted on the upper end surface of the brushless motor housing 17. The guide cover 16 is structurally designed with 5 spiral guide vanes. After the closed impeller 15 is assembled, it is located at the inner hole of the guide cover 16 and the inner hole diameter of the guide cover 16 is 0.5-1 / 2 larger than the outer diameter of the circular wall of the closed impeller 15. 1MM, the permanent magnet rotor 8 and the attachments of the permanent magnet rotor 8 are supported by the lower sliding bearing 4 and the upper sliding bearing 12, the permanent magnet rotor 8 and the rotating shaft 14 are fixed by one-time injection molding of plastic magnets, and the plastic magnets are punched and magnetized into the permanent magnet rotor 8 during injection molding, the closed impeller 15 has 5 spiral blades and an outer annular wall, the end faces of the suspended magnetic ring 2 6 and the suspended magnetic ring 1 5 are opposite and have no mechanical contact, and the end face polarity is the same, the end faces of the suspended magnetic ring 4 11 and the suspended magnetic ring 3 10 are opposite and have no mechanical contact, and the end face polarity is the same.

[0030] In summary, by the high-speed rotation of the permanent magnet rotor 8, the permanent magnet rotor 8 and all the components fixed on the permanent magnet rotor 8 will not have any friction and contact with any mechanical parts in the axial direction, and will be in an absolutely suspended state, thereby greatly reducing the loss of useless work and greatly improving the energy efficiency and service life of the product. The impeller 15 or the booster screw 20 or the turbofan impeller 21 with a special shape and structure can increase the flow rate of water, thereby increasing efficiency.

Claims

1. An energy-saving water pump with axial magnetic suspension rotor features, characterized in that: The invention comprises a base (2), wherein the bottom of the base (2) is fixedly connected to a motor driver (1), the top of the base (2) is fixedly connected to a lower bearing cover (3), the lower bearing cover (3) is fixedly mounted with a lower sliding bearing (4), the top of the lower sliding bearing (4) is fixedly mounted with a suspension magnetic ring (5), the suspension magnetic ring (5) and the lower sliding bearing (4) are fixedly mounted on the upper end surface of the lower bearing cover (3), the top of the lower bearing cover (3) is fixedly mounted with a brushless motor housing (17), and the brushless motor housing ( A stator (18) is installed on the inner wall of the brushless motor housing (17), a stator wire frame (19) is fixedly installed on the stator (18), a permanent magnet rotor (8) is installed in the concentric circular cavity of the stator (18) and the brushless motor housing (17), a first suspension magnetic ring (7) and a second suspension magnetic ring (9) are fixedly installed on the permanent magnet rotor (8) and the rotating shaft (14), a second suspension magnetic ring (6) is fixedly installed downwardly in the first suspension magnetic ring (7), a third suspension magnetic ring (10) is fixedly installed upwardly in the second suspension magnetic ring (9), and the rotating shaft ( 14) A closed impeller (15) is fixedly mounted on the upper end; the rotating shaft (14), the first suspension magnetic ring (7), the second suspension magnetic ring (9), the second suspension magnetic ring (6), the third suspension magnetic ring (10) and the closed impeller (15) are attached to the permanent magnet rotor (8); an upper bearing cover (13) is fixedly mounted on the upper part of the brushless motor housing (17); an upper sliding bearing (12) and a fourth suspension magnetic ring (11) are fixedly mounted on the upper bearing cover (13); the upper sliding bearing (12) is located in the suspension A guide cover (16) is fixedly mounted on the upper end surface of the brushless motor housing (17) and the guide cover (16) is structurally designed with 5 spiral guide vanes. After assembly, the closed impeller (15) is located at the inner hole of the guide cover (16) and the inner hole diameter of the guide cover (16) is 0.5-1MM larger than the outer diameter of the circular wall of the closed impeller (15). The permanent magnet rotor (8) and the attachments of the permanent magnet rotor (8) are supported by the lower sliding bearing (4) and the upper sliding bearing (12); A suspended magnetic ring (5) and a shaft sleeve (23) are fixed on the top of the base (2); the permanent magnet rotor (8) is fixed by injection molding of a turbofan impeller-rotor glue (22) or a rotor glue (21) formed by injection molding of a plastic one-time injection molding; the turbofan impeller-rotor glue (22) or the rotor glue (21) is designed with a centrally-through-hole flow channel; the lower end of the turbofan impeller-rotor glue (22) or the rotor glue (21) is fixedly mounted. There is a second suspended magnetic ring (6), a booster screw (20) is fixedly mounted in the middle hole flow channel of the rotor rubber (21), an upper sliding bearing (12) and a lower sliding bearing (4) are respectively fixedly mounted on the upper end and lower end of the central axis of the turbofan impeller-rotor rubber (22) or the booster screw (20), a shaft sleeve (23) is fixedly mounted on the upper part of the brushless motor housing (17), and both ends of the rotating shaft (14) are fixedly mounted between the shaft sleeve (23) and the shaft sleeve (23); One end of the brushless motor housing (17) is connected to a water inlet cover (24), and one end of the water inlet cover (24) is fixedly mounted with a shaft sleeve (23) and a suspension magnetic ring four (11); the suspension magnetic ring four (11) and the shaft sleeve (23) are superimposed and mounted, and the suspension magnetic ring four (11) is on the end surface of the water inlet cover (24); the brushless motor housing (17) is designed with a water outlet flow channel joint perpendicular to the axial direction of the water inlet cover (24); the other end of the brushless motor housing (17) is fixedly mounted with a shaft sleeve (23) and a suspension magnetic ring one (5); the suspension magnetic ring one (5) and the shaft sleeve (23) are superimposed and mounted, and the suspension magnetic ring one (5) is on the end surface of the inner protrusion of the brushless motor housing (17); a rotating shaft (14) is fixedly mounted between the shaft sleeve (23) and the shaft sleeve (23).

2. The energy-saving water pump with axial magnetic suspension rotor feature according to claim 1 is characterized in that: The permanent magnet rotor (8) and the rotating shaft (14) are fixed by one-time injection molding of plastic magnets, and the plastic magnets are magnetized during the injection molding to become the permanent magnet rotor (8).

3. The energy-saving water pump with axial magnetic suspension rotor characteristics according to claim 1 is characterized by: The closed impeller (15) has five spiral blades and an outer annular wall.

4. The energy-saving water pump with axial magnetic suspension rotor feature according to claim 1 is characterized in that: The end faces of the second suspension magnetic ring (6) and the first suspension magnetic ring (5) are opposite to each other and have no mechanical contact, and the end faces have the same polarity.

5. The energy-saving water pump with axial magnetic suspension rotor feature according to claim 1 is characterized in that: The end faces of the suspension magnetic ring four (11) and the suspension magnetic ring three (10) are opposite to each other and have no mechanical contact, and the end faces have the same polarity.

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