CN113700665A

CN113700665A - Non-contact bearing dynamic pressure supporting device and manufacturing method thereof

Info

Publication number: CN113700665A
Application number: CN202111137399.4A
Authority: CN
Inventors: 朱光波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2021-11-26

Abstract

The invention discloses a non-contact bearing dynamic pressure supporting device and a manufacturing method thereof, and is characterized in that the device comprises: the permanent magnet motor comprises a shaft core, a shaft end turbofan, a permanent magnet rotor, a stator component and a convection end turbofan; the surface of the shaft core is subjected to precision machining; one end of the shaft core is provided with a shaft end turbofan; the middle of the shaft core is provided with a permanent magnet rotor and a stator component to ensure the driving rotary power; and a convection end turbofan is mounted at the other end of the shaft core. The invention does not need any external pressure supply, and the pressure is larger when the rotating speed is higher; the design of large inlet area and strong pressure, small outlet area and small pressure is adopted, and the whole device is supported and lubricated in an air suspension manner; the problem of the harsh environment operating conditions of traditional bearing is solved, make this product can use for a long time, accomplish zero friction, zero consumptive material, hypervelocity operation, the outstanding product equipment of long-term operation.

Description

Non-contact bearing dynamic pressure supporting device and manufacturing method thereof

Technical Field

The invention relates to a supporting device, in particular to a non-contact bearing dynamic pressure supporting device and a manufacturing method thereof.

Background

The high-speed air-blowing rotation or micro air-blowing rotation of the current social household appliances is composed of the shaft center, a bearing, wire winding power and fan blades. Because of high rotating speed, the service life of the self-grinding friction of the bearing is shortened, and the service life is generally not prolonged quickly due to the influence of severe environments such as rising operating temperature, external dust, sand wind, foreign matters and the like. The elimination needs to be updated and replaced, or accidents occur, which cause the faults of jamming, damage, injury to the leaves and the like; in addition, the cold and hot air and dust in the middle of the use process damage the bearing. The ultra-high speed wind rotation is wind rotation at a speed of 5000-700000 revolutions per minute.

The main problem of the existing wind rotor of household appliances or miniature wind rotor is the service life of the common contact bearing. We want to find a new process or method to replace the existing one.

Disclosure of Invention

In order to make up for the short service life of the prior art, the invention provides a non-contact bearing dynamic pressure supporting device and a manufacturing method thereof.

The technical problem of the invention is solved by the following technical scheme:

the invention provides a non-contact bearing dynamic pressure supporting device, comprising: the shaft comprises a shaft core 1, a shaft end turbofan 2, a permanent magnet rotor and stator component 3 and a convection end turbofan 4; the surface of the shaft core 1 is precisely machined; one end of the shaft core 1 is provided with a shaft end turbofan 2; the middle of the shaft core 1 is provided with a permanent magnet rotor and stator component 3 to ensure the driving rotary power; and a convection end turbofan 4 is arranged at the other end of the shaft core 1.

In some embodiments, the blades of the shaft end turbofan 2 and the convection end turbofan 4 are dynamically balanced, and the permanent magnet rotor in the permanent magnet rotor and stator component 3 is dynamically balanced.

In some embodiments, the shaft core 1 is processed into a forming surface in an ultraprecise processing mode, the precision is controlled to be 0.003 to 0.03 microns, and the roughness is controlled to be 0.003 to 0.005 microns; the cycle star is controlled on the surface of the mirror surface, the acoustic membrane is utilized to gradually improve the surface shape precision and the surface roughness, and then a polishing method is added to avoid the large head and the small head according to the required standard so as to be matched with the precision assembly.

In some embodiments, the blades of the shaft end turbofan 2 and the convection end turbofan 4 adopt a 5-shaft processing system; one fan blade is of a multi-blade type, and the dynamic balance inertia is under the precision standard of 0.003 ug.

In some embodiments, all wind forces compress air towards the central end of the shaft core 1, the rotating speed is faster and the pressure is higher; the wind energy power obtained by the rotating speed supports the mass loads of the shaft end turbofan 2, the convection end turbofan 4 and the shaft core 1, and the whole components are suspended and lubricated by air.

In some embodiments, the mandrels 1 are pressed towards each other.

In some embodiments, the air supports the shaft end turbofan 2, the convection end turbofan 4, and the shaft core 1 for high speed revolution; the shaft end turbofan 2 and the convection end turbofan 4 are used for sealing and compressing air, and the design of large inlet area and high pressure and small outlet area and pressure is adopted to output super-high pressure wind power, so that the shaft end turbofan 2, the convection end turbofan 4 and the shaft core 1 normally rotate to work.

The invention also provides a manufacturing method of the non-contact bearing dynamic pressure supporting device, which is characterized by comprising the following steps of: s1: performing precision machining on the surface of the shaft core (1); s2: one end of the shaft core (1) is provided with a shaft end turbofan (2); s3: a permanent magnet rotor and stator component 3 is arranged in the middle of the shaft core (1) to ensure the driving rotary power; s4: the other end of the shaft core (1) is provided with a convection end turbofan (4).

Compared with the prior art, the invention has the advantages that: the invention does not need any external pressure supply, and the pressure is larger when the rotating speed is higher; the design of large inlet area and strong pressure, small outlet area and small pressure is adopted, and the whole device is supported and lubricated in an air suspension manner; the problem of the harsh environment operating conditions of traditional bearing is solved, make this product can use for a long time, accomplish zero friction, zero consumptive material, hypervelocity operation, the outstanding product equipment of long-term operation.

Drawings

FIG. 1 is a schematic view of an axial core of an embodiment of the present invention;

FIG. 2 is a schematic view of an axial end turbofan blade according to an embodiment of the invention;

FIG. 3 is a schematic diagram of a power element group according to an embodiment of the invention;

FIG. 4 is a schematic view of a convection end turbofan according to an embodiment of the present invention

FIG. 5 is a schematic view of the orientation of air bearing kinematic lubrication according to an embodiment of the present invention;

FIG. 6 is a schematic view of an air inlet of an embodiment of the present invention;

FIG. 7 is a schematic view of the AB orientation of air bearing motion lubrication in accordance with an embodiment of the present invention;

fig. 8 is a schematic view of an aerodynamic pressure operation flow according to an embodiment of the present invention.

Wherein, each part is: 1-an axial core; 2-shaft end turbofan; 3-permanent magnet rotor and stator components; 4-convection end turbofan; 5-a main shaft; 6-a separator; 7-an air inlet; 8-compressed air outlet; 9-air outlet; 10-high pressure air outlet; 11-a pressure support bin; 12-shaft support; 13-an air layer; 14-big wind outlet.

Detailed Description

The invention will be further described with reference to the accompanying drawings and preferred embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms of orientation such as left, right, up, down, top and bottom in the present embodiment are only relative concepts to each other or are referred to the normal use state of the product, and should not be considered as limiting.

The invention provides a non-contact bearing dynamic pressure supporting device and a manufacturing method thereof, and relates to the application of a super-high-speed non-contact bearing wind outlet and high-speed blowing slewing device and a super-high-speed turbocharging dynamic pressure supporting device; the problem of the service life of a common contact bearing is solved, and a main shaft of a non-contact bearing, friction-free, non-contact, ultra-high-speed and high-bearing device is adopted. The main invention method comprises: 1. no operation, no pressure; 2. no external pressure supply is needed; 3. the faster the rotation speed, the larger the pressure; 4. pressurizing the two axial centers in opposite directions; 5. inlet area and pressure greater than outlet area pressure holding support applications; 6. the multiple air ducts are in decompression support to protect long-term normal operation.

Referring to fig. 1, a schematic view of a shaft core according to an embodiment of the present invention is shown.

Referring to fig. 2, a schematic view of a shaft end turbofan blade according to an embodiment of the invention is shown.

Referring to fig. 3, a schematic diagram of a power unit set according to an embodiment of the present invention includes a permanent magnet rotor and a stator component.

Fig. 4 is a schematic view of a convection-end turbofan according to an embodiment of the present invention.

The dynamic pressure supporting device of the non-contact bearing of the embodiment of the invention comprises: the shaft comprises a shaft core 1, a shaft end turbofan 2, a permanent magnet rotor and stator component 3 and a convection end turbofan 4; the surface of the shaft core 1 is precisely processed; one end of the shaft core 1 is provided with a shaft end turbofan 2; the middle of the shaft core 1 is provided with a permanent magnet rotor and stator component 3 to ensure the driving rotary power; the other end of the shaft core 1 is provided with a convection end turbofan 4.

In order to meet the requirement of severe environment, all high-speed rotating parts need to be in dynamic balance at the shaft end, blades of a shaft end turbofan 2 and a convection end turbofan 4 are in dynamic balance, and permanent magnet rotors in a permanent magnet rotor and a stator part 3 are in dynamic balance; the flaw detection process of the main shaft material, the type selection process of the manufacturing material and other processes are all elaborated and refined. For the processing of the shaft core 1, the surface is processed and formed in an ultra-precision processing mode, and the processing technologies such as ultra-precision processing, turning mold annual polishing and the like are generally adopted, so that the precision is controlled to be 0.003 to 0.03 micrometer, and the roughness is controlled to be 0.003 to 0.005 micrometer. The circumference star is controlled on the surface of the mirror surface, the auditory membrane is utilized to gradually improve the surface shape precision and the surface roughness, and finally, a polishing method is added to put an end to the large and small heads of the required standard so as to be matched with precision assembly.

Blades of the shaft end turbofan 2 and blades of the convection end turbofan 4 adopt a 5-shaft processing system; one fan blade is of a multi-blade type, and the dynamic balance inertia is in an accuracy standard below 0.003 ug; the accessories of each main shaft are a complex process, the processing precision is quite precise, the manufacturing cost is high, the consistency of the shaft center processed each time is good, and the interchangeability of the processed main shaft product heads is strong.

The two ends solve the problem that the two ends are more and run in opposite directions; all wind power compresses air towards the central end of the shaft core 1, the rotating speed is faster and faster, and the pressure is larger and larger; the wind energy power obtained by the rotating speed is enough to support the mass load of the whole turbofan and the rotor main shaft core such as the shaft end turbofan 2, the convection end turbofan 4, the shaft core 1 and the like, and the whole component assembly is suspended by air; air is a key material for support and lubrication.

Referring to fig. 5, the trend of the air bearing motion lubrication of the embodiment of the invention is schematically shown. The air supporting shaft end turbofan 2, the convection end turbofan 4, the shaft core 1 and other whole turbofan and shaft center high-speed rotation are adopted, and the design that the inlet area is large, the ultrahigh speed and high pressure are high, the outlet area is small and the pressure intensity is small is adopted for the sealed compressed air of the turbofan, so that the normal rotation work of the air pressure of the inner wall of the box body, the supporting shaft and the turbofan is solved, the air plays a supporting and lubricating role, and the super-pressure wind power is output. A partition plate 6 is arranged between the rotors; the two sides of the clapboard 6 are provided with compressed air outlets 8; the left side and the right side of the rotor are provided with air inlets 7; air outlets 9 are arranged at the upper and lower sides of the rotor.

Referring to fig. 6, which is a schematic view of the air inlet, the rotor is provided with air inlets 7 at its periphery;

referring to fig. 7, the schematic view of the direction AB of air supporting motion lubrication is shown, and the shaft end turbofan 2 is provided with high pressure air outlets 10 at the periphery;

referring to fig. 8, a schematic view of an aerodynamic working flow is shown; the blades at the air inlet 7 rotate, the blades pressurize the pressure supporting bin 11, and because the area of a pressurizing outlet of the pressure supporting bin 11 is smaller than that of a channel at the air inlet, the pressure in the pressure supporting bin 11 is kept to be increased, the rotating speed is faster and faster, the pressure is higher and higher, the main shaft support 12 is suspended in an air-compressing manner, and the friction force is reduced; an air layer 13 is arranged on the upper side of the pressure supporting bin 11; the wind is then directed by the large wind outlet 14 to do work within the desired work scenario.

The invention provides a manufacturing method of a shaftless movement pressure support device, which comprises the following steps: s1: firstly, performing precise processing on a shaft core 1; s2: one end of the shaft core 1 is provided with a shaft end turbofan 2; s3: a permanent magnet rotor and stator component 3 is arranged in the middle of the shaft core 1 to ensure the driving rotary power; s4: and a convection end turbofan 4 is arranged at the other end of the shaft core 1.

The invention solves the severe environment working condition of the traditional bearing, enables the product to be used for a long time, and serves as excellent product equipment with zero friction, zero material consumption, ultra-high speed operation and long-term operation, can be applied to various industries, and solves the fundamental problems of industrial materials and processes. The invention is not limited to the application of ultra-high speed bearing wind power and wind power rotating devices, and ultra-high speed turbocharging dynamic pressure supporting devices, and also comprises daily electric appliances such as any high-speed wind blowing rotation, wind power dryers, hair dryers and the like, the application method of the ultra-high speed non-contact bearing, high-speed centrifugal materials, wear-resistant materials, processing materials, lubricating materials and the like, health products, electric products, medical instruments and medical elements, medical equipment, the rotating mechanism of small household appliances, ultra-high speed rotation experimental devices, industrial application rotating devices, complete machines and key parts in the optical semiconductor industry, high-pressure pumps including but not limited to high-pressure water pumps, high-pressure oil pumps and the like, and the same type of application methods in the high-speed devices are included in the patent protection scope of the invention.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.

Claims

1. A non-contact bearing dynamic pressure support device, characterized in that, comprising:

A shaft core (1), a shaft end turbofan (2), a permanent magnet rotor and stator components (3), and a convection end turbofan (4);

The surface of the shaft core (1) is precisely machined;

A shaft end turbofan (2) is installed on one end of the shaft core (1);

A permanent magnet rotor and a stator component (3) are installed in the middle of the shaft core (1) to ensure driving rotational power;

A convection end turbofan (4) is installed on the other end of the shaft core (1).

2. The non-contact bearing dynamic pressure support device according to claim 1, characterized in that: the blades of the shaft end turbofan (2) and the convection end turbofan (4) are dynamically balanced, and the permanent magnet rotor and The permanent magnet rotor in the stator part (3) is dynamically balanced.

3. The non-contact bearing dynamic pressure support device according to claim 1, characterized in that: the shaft core (1) is processed by ultra-precision machining to form the surface, and the precision is controlled within 0.003 microns to 0.03 microns, and the roughness is controlled In the range of 0.003-0.005 microns; Zhou Xing should control the mirror surface, use the hearing film to gradually improve the surface shape accuracy and surface roughness, and then add polishing methods to eliminate the large and small heads according to the required standards to match the precision assembly.

4. The non-contact bearing dynamic pressure support device according to claim 1, characterized in that: the blades of the shaft-end turbofan (2) and the convection-end turbofan (4) adopt a 5-axis machining system; For multi-blade type, the accuracy standard of dynamic balance inertia is below 0.003ug.

5. The non-contact bearing dynamic pressure support device according to claim 1, characterized in that: all the wind force compresses air to the central end of the shaft core (1), the speed is getting faster and faster, and the pressure is getting bigger and bigger; The obtained wind energy power supports the mass load of the shaft end turbofan (2), the convection end turbofan (4) and the shaft core (1), and the air suspends and lubricates the entire component bearing.

6 . The non-contact bearing dynamic pressure support device according to claim 1 , wherein the shaft cores ( 1 ) are pressed against each other. 7 .

7. The non-contact bearing dynamic pressure support device according to claim 1, characterized in that: the air supports the shaft end turbofan (2), the convection end turbofan (4) and the shaft core (1) for high-speed rotation; The end turbofan (2) and the convective end turbofan (4) seal the compressed air, adopt the design of large inlet area and high pressure, and small outlet area with small pressure, so as to output super high pressure wind force, so that the shaft end turbofan (2), the convection end turbofan (2), the convection end The turbofan (4) and the shaft core (1) rotate normally.

8. A manufacturing method of a non-contact bearing dynamic pressure support device, characterized in that, comprising the following steps:

S1: Do precision machining on the surface of the shaft core (1);

S2: Install the shaft end turbofan (2) at one end of the shaft core (1);

S3: Install the permanent magnet rotor and the stator part (3) in the middle of the shaft core (1) to ensure the driving rotational power;

S4: Install the convection end turbofan (4) on the other end of the shaft core (1).