Energy-saving and throat-reducing magnetic suspension fan

Abstract

The utility model discloses an energy-saving and throat-reducing magnetic suspension fan, which relates to the technical field of magnetic suspension fans and comprises a casing, a rotating shaft and a permanent magnet synchronous motor, the rotating shaft is rotatably connected in the casing, and the permanent magnet synchronous motor is mounted in the middle of the rotating shaft. When the energy-saving and throat-reducing magnetic suspension fan is used, the permanent magnet synchronous motor, the magnetic suspension radial bearing and the impeller are matched with one another, so that the mechanical friction loss is eliminated, and the energy-saving effect is achieved; and the cover plate is moved through the auxiliary mechanism, so that a certain gap is formed between the cover plate and the shell, a worker can conveniently observe the working state of components in the shell, the cover plate is taken down from the guide seat, an opening in one side of the shell is completely shown, the worker can conveniently maintain the components in the shell through the opening, and the working efficiency is improved. And time and energy are saved, so that when the energy-saving and throat-reducing magnetic suspension fan is used, the effects of conveniently observing internal components and maintaining are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic levitation fans, in particular to an energy-saving and noise-reducing magnetic levitation fan. Background Art

[0002] A magnetic levitation fan is a fan that uses magnetic levitation bearing technology and high-speed motor drive, and an energy-saving and noise-reducing magnetic levitation fan is a high-efficiency and energy-saving fan that uses magnetic levitation bearing technology. It uses magnetic force to suspend the rotor, eliminating mechanical friction loss, thereby achieving energy saving effects. The main advantages of magnetic levitation fans include high efficiency, low maintenance costs, low noise and vibration.

[0003] According to announcement number CN113389743A, the patent includes a casing, wherein a fan shaft, a motor, a thrust bearing, a magnetic levitation radial bearing, and a protective bearing are arranged in the casing. A position sensor is provided on the magnetic levitation radial bearing, and the protective bearing is provided with a support ring, a protective seat, and a rolling bearing. A radial suspension gap is provided between the shaft and the motor, the magnetic levitation radial bearing, and the protective bearing. An impeller is installed on the left side of the shaft, an air inlet is provided at the left end of the casing on the left side of the impeller, an air outlet is provided at the left end of the casing on the upper side of the impeller, a speed sensor is installed in the casing at the lower end of the impeller, and a controller is connected to the outside of the casing. The design of the invention enables the shaft to fall when rotating in multiple directions, reducing the collision force, and the shaft can fall back better after shutdown.

[0004] As the usage time increases, in order to ensure the stable movement of the magnetic levitation fan, the staff needs to regularly inspect and maintain the inside of the magnetic levitation fan. However, the casing in the above-mentioned patent is an integrated structure, which makes it difficult for the staff to open the casing to maintain the inside of the magnetic levitation fan, making it difficult for the staff to ensure that the various components of the magnetic levitation fan are in the best working condition, and affecting the staff's replacement of wearing parts, thereby affecting the overall efficiency of the magnetic levitation fan. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving and noise-reducing magnetic levitation fan to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an energy-saving and noise-reducing magnetic levitation fan, comprising a casing, a rotating shaft and a permanent magnet synchronous motor, the casing being rotatably connected to the rotating shaft, and a permanent magnet synchronous motor being installed in the middle of the rotating shaft, and a thrust bearing being connected to one side of the outer wall of the permanent magnet synchronous motor, magnetic levitation radial bearings being provided on both sides of the outer wall of the rotating shaft, and a protective bearing being connected to the side of the rotating shaft close to the magnetic levitation radial bearing, and an impeller being docked on one side of the outer wall of the rotating shaft, a cover plate being docked on the side of the casing away from the impeller, and an auxiliary mechanism being provided on the outer wall of the casing, and the auxiliary mechanism comprising an electric push rod connected to the casing, the output end of the electric push rod being docked with a guide seat, and the outer wall of the guide seat being rotatably connected to a fixing bar, fixing seats being welded on both sides of the outer wall of the cover plate, and a limiting rod being slidably connected inside the fixing seat, and a spring being sleeved on the outer wall of the limiting rod.

[0007] Preferably, a threaded pin is connected to the inner thread of the fixing bar, and a limiting column is welded on the side of the cover plate away from the fixing seat.

[0008] Preferably, an extension seat is slidably connected to the outer wall of the limiting column, and one side of the outer wall of the extension seat is welded to the casing.

[0009] Preferably, a limiting ring is welded to the middle of the outer wall of the cover plate, and a sealing ring is connected to the side of the outer wall of the cover plate close to the limiting ring.

[0010] Preferably, the fixing seat, the limiting rod and the spring form an elastic telescopic mechanism, and a limiting hole corresponding to the limiting rod is opened inside the fixing bar.

[0011] Preferably, a storage cavity is provided inside the fixing seat, and a guide hole is provided on a side of the cover plate close to the fixing seat.

[0012] Compared with the prior art, the beneficial effects of the present invention are: when the energy-saving and noise-reducing magnetic levitation fan is in use, the permanent magnet synchronous motor, the magnetic levitation radial bearing and the impeller cooperate with each other, thereby eliminating mechanical friction losses and achieving energy-saving effects; and the cover plate is moved by an auxiliary mechanism so that there is a certain gap between it and the casing, which makes it convenient for staff to check the working status of the internal components of the casing, and to remove the cover plate from the guide seat so that the opening on one side of the casing is fully visible, thereby making it convenient for staff to maintain the internal components of the casing through the opening, saving time and energy, thereby facilitating the inspection of internal components and maintenance when the energy-saving and noise-reducing magnetic levitation fan is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional cutaway structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the cover plate of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the cover plate of the utility model;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the guide seat of the utility model;

[0018] Figure 6 It is a schematic diagram of the three-dimensional cross-section structure of the fixing seat of the utility model.

[0019] In the figure: 1. Casing; 2. Rotating shaft; 3. Permanent magnet synchronous motor; 4. Thrust bearing; 5. Magnetic levitation radial bearing; 6. Protective bearing; 7. Impeller; 8. Cover plate; 9. Auxiliary mechanism; 901. Electric push rod; 902. Guide seat; 903. Fixing bar; 904. Fixing seat; 905. Limit rod; 906. Spring; 907. Threaded pin; 908. Limit column; 909. Extension seat; 910. Limit ring; 911. Sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-6The utility model provides a technical solution: an energy-saving and noise-reducing magnetic levitation fan, comprising a casing 1, a rotating shaft 2 and a permanent magnet synchronous motor 3, the casing 1 is rotatably connected to the rotating shaft 2, and the permanent magnet synchronous motor 3 is installed in the middle of the rotating shaft 2, and one side of the outer wall of the permanent magnet synchronous motor 3 is connected to a thrust bearing 4, magnetic levitation radial bearings 5 ​​are provided on both sides of the outer wall of the rotating shaft 2, and the side of the rotating shaft 2 close to the magnetic levitation radial bearing 5 is connected to a protective bearing 6, and one side of the outer wall of the rotating shaft 2 is docked with an impeller 7, the side of the casing 1 away from the impeller 7 is docked with a cover plate 8, and the outer wall of the casing 1 is provided with an auxiliary mechanism 9, and the auxiliary mechanism 9 includes an electric push rod 901 connected to the casing 1, the output end of the electric push rod 901 is docked with a guide seat 902, and the outer wall of the guide seat 902 is rotatably connected to a fixing bar 903, fixing seats 904 are welded on both sides of the outer wall of the cover plate 8, and the fixing seat 904 is internally slidably connected to a limit rod 905, and The outer wall of the limit rod 905 is sleeved with a spring 906; the internal thread of the fixing bar 903 is connected to a threaded pin 907, and a limit column 908 is welded on the side of the cover plate 8 away from the fixing seat 904; the outer wall of the limit column 908 is slidably connected to an extension seat 909, and one side of the outer wall of the extension seat 909 is welded to the casing 1; a limit ring 910 is welded in the middle of the outer wall of the cover plate 8, and a sealing ring 911 is connected to the side of the outer wall of the cover plate 8 close to the limit ring 910; the fixing seat 904, the limit rod 905 and the spring 906 constitute an elastic telescopic mechanism, and a limit hole corresponding to the limit rod 905 is opened inside the fixing bar 903; a storage cavity is opened inside the fixing seat 904, and a guide hole is opened on the side of the cover plate 8 close to the fixing seat 904; the center line of the limit ring 910 coincides with the sealing ring 911, and a through hole corresponding to the limit column 908 is opened inside the extension seat 909, and the electric push rod 901 is fixed to the casing 1 through the mounting seat.

[0022] During specific implementation, during the use of the energy-saving and noise-reducing magnetic levitation fan, in order to ensure that the various components of the magnetic levitation fan are in the best working condition, the electric push rod 901 is first started. Since the output end of the electric push rod 901 is connected to the guide seat 902, the extension of the electric push rod 901 will drive the guide seat 902 to move together, and at this time, under the action of the spring 906 returning to the original position, the limit rod 905 is connected to the fixing bar 903, and the threaded pin 907 passes through the fixing bar 903 and is connected to the cover plate 8, thereby making the guide seat 902 and the cover plate 8 aligned. After the guide seat 902 is fixed, it will generate a thrust on the cover plate 8, causing the cover plate 8 to move away from the housing 1. Because the cover plate 8 is connected to the limiting column 908, the limiting column 908 slides along the extension seat 909, thereby guiding the movement of the cover plate 8 until the cover plate 8 moves to the specified position. At this time, there is a large gap between the cover plate 8 and the housing 1, which makes it convenient for the staff to check the working status of the internal components of the housing 1, ensuring that each component is in the best working condition, thereby improving the overall operating efficiency.

[0023] When it is found that the wearing parts need to be replaced, the threaded pin 907 is first rotated to disengage it, and then the limit rod 905 in the fixing seat 904 is pulled to make the limit rod 905 move in the direction away from the fixing bar 903. The movement of the limit rod 905 will squeeze the spring 906 to cause it to deform until the limit rod 905 is disconnected from the fixing bar 903, thereby canceling the limit of the fixing bar 903. Thereafter, the fixing bar 903 is rotated to a horizontal state, and the cover plate 8 is moved to disengage it from the fixing bar 903. Then, the cover plate 8 is removed from the side of the guide seat 902, so that the opening on one side of the casing 1 is completely exposed. At this time, the staff can inspect and replace the internal components of the magnetic levitation fan through the opening, thereby making it convenient for the staff to open the casing 1 for its internal maintenance, saving time and energy. Maintenance measures such as cleaning, inspection and replacement of wearing parts can reduce wear and prevent failures, thereby extending the service life of the fan, thereby facilitating the inspection of internal components and maintenance when the energy-saving and noise-reducing magnetic levitation fan is used.

[0024] After the locking cam 905 is locked, the locking cam 906 is unlocked and the locking cam 907 is unlocked, and the locking cam 907 is unlocked, so that the locking cam 907 is unlocked.

[0025] In summary, when using this energy-saving and noise-reducing magnetic levitation fan, first install the casing 1 at the specified position, then start the permanent magnet synchronous motor 3 so that the thrust bearing 4 drives the rotating shaft 2 to rotate axially, and at this time the magnetic levitation radial bearing 5 is suspended, so that the impeller 7 rotates at high speed to suck air from the air inlet, and then cooperates with the volute to discharge the air from the air outlet, and then exchanges the air flow, and protects the magnetic levitation radial bearing 5 by protecting the bearing 6. The magnetic levitation fan adopts high-efficiency centrifugal impeller 7, high-efficiency permanent magnet synchronous motor 3 drive and contactless magnetic levitation bearing technology, and compared with traditional fans, energy saving can reach more than 30%; and by adopting magnetic levitation The floating bearing system has no contact between the rotating parts and the mechanical system, no mechanical friction, stable operation, low vibration, and very low overall noise, thus achieving the effect of energy saving and noise reduction. This is a prior art and will not be elaborated on here. The cover plate 8 is moved by the auxiliary mechanism 9, which makes it convenient for the staff to maintain the internal components of the casing 1 through the opening, ensuring that the various components of the magnetic levitation fan are in the best working condition, and through maintenance measures such as cleaning, inspection and replacement of wearing parts, wear can be reduced, failures can be prevented, thereby improving the overall operating efficiency of the magnetic levitation fan. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An energy-saving and noise-reducing magnetic levitation fan, comprising a housing (1), a rotating shaft (2) and a permanent magnet synchronous motor (3), characterized in that: The housing (1) is internally connected to a rotating shaft (2), and a permanent magnet synchronous motor (3) is installed in the middle of the rotating shaft (2), and a thrust bearing (4) is connected to one side of the outer wall of the permanent magnet synchronous motor (3), magnetic suspension radial bearings (5) are provided on both sides of the outer wall of the rotating shaft (2), and a protective bearing (6) is connected to the side of the rotating shaft (2) close to the magnetic suspension radial bearing (5), and an impeller (7) is docked on one side of the outer wall of the rotating shaft (2), and a cover plate (8) is docked on the side of the housing (1) away from the impeller (7), and An auxiliary mechanism (9) is provided on the outer wall of the housing (1), and the auxiliary mechanism (9) includes an electric push rod (901) connected to the housing (1), an output end of the electric push rod (901) is docked with a guide seat (902), and the outer wall of the guide seat (902) is rotatably connected to a fixing bar (903), and fixing seats (904) are welded on both sides of the outer wall of the cover plate (8), and a limiting rod (905) is slidably connected inside the fixing seat (904), and a spring (906) is sleeved on the outer wall of the limiting rod (905).

2. The energy-saving and noise-reducing magnetic levitation fan according to claim 1, characterized in that: The fixing strip (903) is internally threadedly connected with a threaded pin (907), and a limiting column (908) is welded on the side of the cover plate (8) away from the fixing seat (904).

3. The energy-saving and noise-reducing magnetic levitation fan according to claim 2, characterized in that: The outer wall of the limiting column (908) is slidably connected to an extension seat (909), and one side of the outer wall of the extension seat (909) is welded to the housing (1).

4. The energy-saving and noise-reducing magnetic levitation fan according to claim 3, characterized in that: A limiting ring (910) is welded to the middle of the outer wall of the cover plate (8), and a sealing ring (911) is connected to the side of the outer wall of the cover plate (8) close to the limiting ring (910).

5. The energy-saving and noise-reducing magnetic levitation fan according to claim 4, characterized in that: The fixing seat (904), the limiting rod (905) and the spring (906) form an elastic telescopic mechanism, and a limiting hole corresponding to the limiting rod (905) is provided inside the fixing bar (903).

6. The energy-saving and noise-reducing magnetic levitation fan according to claim 1, characterized in that: A storage cavity is provided inside the fixing seat (904), and a guide hole is provided on a side of the cover plate (8) close to the fixing seat (904).

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