CN202673369U - Magnetic force type self seal vane pneumatic motor - Google Patents
Magnetic force type self seal vane pneumatic motor Download PDFInfo
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- CN202673369U CN202673369U CN 201220184747 CN201220184747U CN202673369U CN 202673369 U CN202673369 U CN 202673369U CN 201220184747 CN201220184747 CN 201220184747 CN 201220184747 U CN201220184747 U CN 201220184747U CN 202673369 U CN202673369 U CN 202673369U
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Abstract
A magnetic force type self seal vane pneumatic motor comprises a rotor consisting of a front shaft,a rear shaft and a rotor body, a stator, vanes, a front end cap and a rear end cap. The pneumatic motor can be of a non-ferromagnetic material type or a ferromagnetic material type according to the material of the rotor. A non-ferromagnetic material type pneumatic motor is of a rotor made of non-ferromagnetic material. A vane permanent magnet is arranged at the bottom of the vanes. Blade grooves are evenly arranged along the radial direction of the rotor body for installation of the vanes. Vanes can move along the radial direction of the rotor body inside the vane grooves. A rotor permanent magnet is placed at the bottom of each vane groove. A ferromagnetic material type ferromagnetic material type pneumatic motor is of a rotor made of ferromagnetic material. Magnetic-shielding blade grooves are inlaid in deep grooves on the rotor. Vanes can move along the radial direction of the rotor body inside the magnetic-shielding vane grooves. The vane permanent magnet and the rotor permanent magnet are arranged with the same magnetic poles opposite to each other. The magnetic force type self seal vane pneumatic motor is convenient to manufacture and easy to operate. The defects of the prior art of insufficient vane thrust and susceptible stiffness of a spring are overcome.
Description
Technical field
The utility model relates to the pneumatic motor in the Power Machinery Engineering, particularly, is a kind of magnetic type selfsealings blade pneumatic motor.
Background technique
Pneumatic vane motor is mechanical field a kind of dynamic power machine commonly used.The pneumatic vane motor of commonly using at present, the blade of the quality of its service behaviour and its sealing and generation running torque is closely related.The blade release mode of pneumatic vane motor mainly contains following three kinds: the centrifugal force of blade self when one, utilizing pneumatic motor work, blade is released rotor; Two, by at blade bottom mounting spring formula blade ejecting mechanism, utilize spring force that blade is released rotor; Three, the pressurized air that utilizes the blade bottom to pass into is released rotor with blade.
There is following point in first kind of way: when rotor speed was zero during the motor starting, the centrifugal force that blade is subject to was zero, and blade can not be pushed out, and can not form good Seal cage, thereby may cause pneumatic vane motor to start; When the pneumatic motor rotating speed is crossed when low, the centrifugal force that blade is subject to is too small, sealing between blade and the stator inner surface also can be affected, these factors have a strong impact on the sealing between blade and the stator inner surface, cause a large amount of compressed air leakages, cause pneumatic vane motor starting performance and low speed torque performance to be greatly affected and to waste the pressurized air energy.
The problem that the second way exists: because the restriction of spring rate, it is stuck with the motor of spring blade ejecting mechanism blade to occur easily at work, affects motor operations; Perhaps, cause blade and stator inner surface frictional force excessive, have influence on motor operations performance and efficient; Moreover because motor runs up, under long-term load, spring can lose efficacy because of tired.
The problem that the third mode exists: when the compressed air pressure that passes into when the blade bottom was crossed and hanged down, the thrust that blade is subject to was less, and blade and stator inner surface sealing are affected, even it is logical to cause the high low pressure air to alter, and cause motor to lose driving force; When compressed air pressure is too high, the thrust that blade is subject to is excessive, and the frictional force of blade and stator inner surface increases, and causes the resisting moment increase of pneumatic motor and causes the blade wear aggravation, and the processing of the compression air flow channel of blade bottom acquires a certain degree of difficulty, and operability is affected.
The model utility content
For solving existing problem in the above-mentioned background technology, the utility model is designed a kind of magnetic type selfsealings pneumatic vane motor, its core work principle is to utilize to produce enough repulsion (being magnetic field thrust) between the different magnet same pole, magnetic field thrust is released rotor with blade, guarantee blade the motor prestart just closely with the stator inner surface close contact, form Seal cage, pressurized air enters Seal cage by the air inlet on the stator, and then the drive rotor rotation, again by the rotor of output shaft axle output torque.
The utility model solves its technical problem and adopts following technological scheme to realize:
Magnetic type selfsealings blade pneumatic motor, comprise by front axle, the rotor that rear axle and rotor body consist of, stator, blade, front cover, rear end cover, front axle is in order to install bearing again as output shaft, rear axle is in order to install bearing, described stator is the annular element of hollow, be processed with compressed air inlet port and relief opening on the stator, and in order to before installing, the tapped hole of rear end cover and other parts, before, be processed with eccentric pivot hole on the rear end cover, in order to rotor bearing to be installed, it is characterized in that, whether described pneumatic motor has magnetic conductivity according to rotor material can be divided into nonferromagnetic material rotor-type and ferromagnetic material rotor-type, for nonferromagnetic material rotor-type pneumatic motor, its rotor is made by nonferromagnetic material, in the bottom of blade the blade permanent magnet is installed, the blade permanent magnet can be mobile with blade, radially evenly be processed with to install the blade groove of blade along rotor body, blade places in the blade groove, blade can move along rotor radial in blade groove, be processed with groove in blade groove bottom, rotor permanent magnet is installed in the groove, because rotor magnetic conduction not, the magnetic field short circuit phenomenon can not occur in the blade permanent magnet of inserting wherein, and the blade permanent magnet can not cause blade not move owing to magnetic attraction is adsorbed in the blade groove sidewall; For ferromagnetic material rotor-type pneumatic motor, its rotor is made by ferromagnetic material, in the bottom of blade the blade permanent magnet is installed, the blade permanent magnet can be mobile with blade, because the ferromagnetic material of rotor can be with the magnetic field short circuit between rotor permanent magnet and the blade permanent magnet, cause magnetic field thrust to lose efficacy, therefore, in order to prevent the magnetic field short circuit, radially evenly be processed with deep trouth along rotor body, deep trouth is embedded in by having of making of high strength nonferromagnetic material certain thickness every the magnetic blade groove, with permanent magnet and ferromagnetic rotor isolation, blade places in the magnetic blade groove every the magnetic blade groove, and blade can move along rotor radial in the magnetic blade groove, be fixed with permanent magnet every magnetic blade groove bottom, rotate with rotor every the magnetic blade groove; When described blade permanent magnet and rotor permanent magnet were installed, same pole must be installed relatively, is N-N, S-S.
In the utility model, required repulsive force is according to compound function F between two magnet
o=f (m
1, m
2, f
1, f
2) come to determine m wherein
1Be leaf quality, m
2Be blade permanent magnet quality, f
1Be blade and blade groove or the friction factor between the magnetic blade groove, f
2Be the friction factor between blade and the end cap.
In the utility model, every the thickness of magnetic blade groove sidewall according to compound function H
o=h (μ, B, H, h
c, d) determining that wherein μ is permeability, B is saturation induction density, H is magnetic intensity, h
cBe coercivity, d is the distance between blade and blade groove internal surface.In the utility model, the bore of stator radius is pressed
Determine, u=15～22m/s wherein, N is the sliding-vane motor design speed; The eccentric opening throw of eccentric is pressed
Determine, v=1.6～2.2m/s wherein, N is the sliding-vane motor design speed.Rotor radius is pressed r=R-e and is determined; Lobe numbers is chosen by Z=4～6, and length of blade is pressed the air cavity axial length and calculated, and width of blade is pressed h=(0.5～0.6) r and calculated.Blade groove or equal or be slightly larger than blade height every the degree of depth of magnetic blade groove.
The utility model has the advantage of: it is not enough one, effectively to improve the blade thrust of common blade formula pneumatic motor when starting and low speed rotation; Two, avoid spring blade ejecting mechanism since spring rigidity effects moyor and load on the impact of spring; Three, solve the processing of compressed air type blade ejecting mechanism and pressure controlled not ease for operation.
Description of drawings
Fig. 1 is the overall structure schematic representation of nonferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is elevational cross-sectional view, and figure b is side view cutaway drawing;
Fig. 2 is the overall structure schematic representation of ferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is elevational cross-sectional view, and figure b is side view cutaway drawing;
Fig. 3 is the Magnetic field distribution figure of the special-shaped permanent magnet of the utility model;
Fig. 4 is the Magnetic field distribution schematic representation that forms between the utility model blade permanent magnet and the rotor permanent magnet;
Fig. 5 is the utility model blade schematic representation;
Fig. 6 is rotor and the blades installation schematic representation of nonferromagnetic material rotor-type pneumatic motor;
Fig. 7 is the rotor schematic representation of nonferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is front section view, and figure b is side view;
Fig. 8 is the rotor permanent magnet scheme of installation of nonferromagnetic material rotor-type pneumatic motor;
Fig. 9 is the blade assembling design sketch of nonferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is side view, and figure b is the stravismus sectional view;
Figure 10 is the Seal cage schematic representation of nonferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is front view, and figure b is sectional view
Sectional view when Figure 11 is the working state of nonferromagnetic material rotor-type pneumatic motor;
Figure 12 is the blades installation schematic representation of ferromagnetic material rotor-type pneumatic motor;
Figure 13 is the rotor schematic representation of ferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is front view, and figure b is side view;
Figure 14 be ferromagnetic material rotor-type pneumatic motor every magnetic blade groove schematic representation;
Wherein scheming a is front section view, and figure b is side view;
Figure 15 is the magnetic type self-sealing mechanism schematic representation of ferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is side view, and figure b is the stravismus sectional view;
Figure 16 is the Seal cage schematic representation of ferromagnetic material rotor-type pneumatic motor;
Wherein scheming a is front view, and figure b is sectional view;
Figure 17 is the schematic representation of blade when most proximal end of ferromagnetic material rotor-type pneumatic motor;
Figure 18 is the schematic representation of blade when distal-most end of ferromagnetic material rotor-type pneumatic motor;
Figure 19 is the working state sectional view of ferromagnetic material rotor-type pneumatic motor.
Embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments the utility model is further described in detail.
Shown in Fig. 1-19, magnetic type selfsealings blade pneumatic motor, comprise by front axle 5, the rotor 1 that rear axle 6 and rotor body 7 consist of, stator 2, blade 3, front cover 14, rear end cover 15, front axle is in order to install bearing again as output shaft, rear axle is in order to install bearing, described stator is the annular element of hollow, be processed with compressed air inlet port 10 and relief opening 11 on the stator, and in order to before installing, the tapped hole of rear end cover and other parts, before, be processed with eccentric pivot hole on the rear end cover, in order to rotor bearing to be installed, it is characterized in that, whether described pneumatic motor has magnetic conductivity according to rotor material can be divided into nonferromagnetic material rotor-type and ferromagnetic material rotor-type, for nonferromagnetic material rotor-type pneumatic motor, its rotor is made by nonferromagnetic material, in the bottom of blade blade permanent magnet 12 is installed, the blade permanent magnet can be mobile with blade, radially evenly be processed with to install the blade groove 81 of blade along rotor body, blade places in the blade groove, and blade can move along rotor radial in blade groove, is processed with groove in the blade groove bottom, rotor permanent magnet 9 is installed in the groove, because rotor is magnetic conduction not, the magnetic field short circuit phenomenon can not occur in the blade permanent magnet of inserting wherein, and the blade permanent magnet can not cause blade not move owing to magnetic attraction is adsorbed in the blade groove sidewall; For ferromagnetic material rotor-type pneumatic motor, its rotor is made by ferromagnetic material, in the bottom of blade blade permanent magnet 12 is installed, the blade permanent magnet can be mobile with blade, because the ferromagnetic material of rotor can be with the magnetic field short circuit between rotor permanent magnet and the blade permanent magnet, cause magnetic field thrust to lose efficacy, therefore, in order to prevent the magnetic field short circuit, radially evenly be processed with deep trouth along rotor body, deep trouth is embedded in by having of making of high strength nonferromagnetic material certain thickness every magnetic blade groove 82, with permanent magnet and ferromagnetic rotor isolation, blade places in the magnetic blade groove every the magnetic blade groove, and blade can move along rotor radial in the magnetic blade groove, be fixed with permanent magnet every magnetic blade groove bottom, rotate with rotor every the magnetic blade groove; When described blade permanent magnet and rotor permanent magnet were installed, same pole must be installed relatively, is N-N, S-S.
Concrete each the description of the drawings is as follows:
As shown in Figure 1, a is that elevational cross-sectional view, b are side view cutaway drawing.Motor mainly is comprised of rotor 1, stator 2, blade 3, front cover 14, rear end cover 15, rotor permanent magnet 9, blade permanent magnet 12, blade groove 81.
As shown in Figure 2, a is that elevational cross-sectional view, b are side view cutaway drawing.Motor is mainly by rotor 1, stator 2, blade 3, front cover 14, rear end cover 15, rotor permanent magnet 9, blade permanent magnet 12, form every magnetic blade groove 82.
As shown in Figure 3, in order better to utilize the strong characteristic in magnetic field, permanent magnet two ends, the permanent magnet 4 that the utility model adopts (comprising rotor permanent magnet 9 and blade permanent magnet 12) is a kind of special-shaped magnet, and formed Magnetic field distribution is as shown in FIG. in the space for it.
As shown in Figure 4, when two permanent magnets 4 (comprise rotor permanent magnet 9 with blade permanent magnet 12) when nearer, the repulsion between two permanent magnets is larger; When two permanent magnet apart from each others, the repulsion between two permanent magnets is less.
As shown in Figure 5, blade permanent magnet 12 firmly is installed on the bottom of blade 3, can be with 12 motions of blade permanent magnet at motor operations Leaf 3.
As shown in Figure 6, blade 3 places the blade groove 81 on the rotor body 7, and during pneumatic motor work, blade can move in the blade groove on rotor body.
As shown in Figure 7, wherein a is front section view, and b is side view.Rotor is comprised of front axle (output shaft) 5, rear axle 6, rotor body 7, radially evenly be processed with on the rotor body for the blade groove 81 that blade is installed, the blade groove bottom is processed with the groove that rotor permanent magnet is installed, and front axle is used for installing bearing and output torque, and rear axle is used for installing bearing.
As shown in Figure 8, rotor permanent magnet 9 firmly is installed in the groove of blade groove 81 bottoms, rotates with rotor at motor operations rotor permanent magnet.
As shown in Figure 9, wherein a is that side view, b are the stravismus sectional view.The blade permanent magnet 12 that is installed on the blade 3 forms the magnetic type self-sealing mechanism with the rotor permanent magnet 9 that is installed on the rotor 1.When concrete blades installation, must guarantee identical extreme relative installation the with rotor permanent magnet of blade permanent magnet.
As shown in figure 10, wherein a figure is front view, and b figure is sectional view.Because have repulsion between blade permanent magnet 12 and the rotor permanent magnet 9, blade 3 is extrapolated, so that blade 3 is close to motor stator 2.Form Seal cage 13 between blade 3, rotor 1, stator 2 and front cover 14, the rear end cover 15.
As shown in figure 11, pressurized air enters the Seal cage 13 that is formed by stator 2, rotor 1, blade 3 and front cover 14, rear end cover 15 by suction port 10, the expansion of compressed gas acting promotes motor rotor along direction rotation shown in the figure, by rotor front axle output torque, the gas after will expanding by relief opening 11 is at last discharged.
As shown in figure 12, in order to prevent the permanent magnet generation magnet short-cut path on the blade 3, affect motor operations, be equipped with between the rotor 1 that blade 3 and ferromagnetic material are made that nonferromagnetic material makes every magnetic blade groove 82 with both isolation.Every the thickness of magnetic blade groove sidewall according to compound function H
o=h (μ, B, H, h
c, d) determining that wherein μ is permeability, B is saturation induction density, H is magnetic intensity, h
cBe coercivity, d is the distance between blade and blade groove internal surface.
As shown in figure 13, wherein a is front view, and b is side view.Radially evenly be processed with on the rotor body 7 for the deep trouth of installing every the magnetic blade groove, front axle is used for installing bearing and output torque, and rear axle is used for installing bearing.
As shown in figure 14, wherein a is that front section view, b are side view.Rotor permanent magnet 9 firmly is installed on every the bottom of magnetic blade groove 82, rotates with rotor at motor operations rotor permanent magnet 9.Blade groove 82 can prevent that the magnetic field of blade permanent magnet is short-circuited, and causes blade to be adsorbed in the blade groove internal surface and increases the frictional force that blade moves.
As shown in figure 15, wherein a figure is side view, and b figure is the stravismus sectional view.The magnetic type self-sealing mechanism utilizes the principle of " homopolar-repulsion " between the different magnet same pole to make, and the blade permanent magnet 12 that is installed on blade 3 bottoms forms with the rotor permanent magnet 9 that is installed on every magnetic blade groove 82 bottoms.Because the magnet homopolar-repulsion, can produce repulsion between blade permanent magnet 12 and the rotor permanent magnet 9, go out formation Seal cage 13 in motor in that repulsion effect lower blade 3 is pushed outwards.In specific implementation process, during blades installation, must guarantee relatively to install with extreme between blade permanent magnet and the rotor permanent magnet.
As shown in figure 16, wherein a is that front view, b are sectional view.Because produce repulsion between blade permanent magnet 12 and the rotor permanent magnet 9, blade 3 is extrapolated, blade 3 is close to motor stator 2 internal surfaces.Form Seal cage 13 between blade 3, rotor 1, stator 2 and front cover 14, the rear end cover 15.
As shown in figure 17, when moving to most proximal end, blade 3 stretches out every the part of magnetic blade groove 82 minimum.
As shown in figure 18, when moving to distal-most end, the part that blade 3 stretches out reasonable blade groove 82 is maximum.
As shown in figure 19, pressurized air enters the Seal cage 13 that is formed by stator 2, rotor 1, blade 3 and front cover 14, rear end cover 15 by suction port 10, the expansion of compressed gas acting promotes motor rotor along the direction rotation shown in the figure, output torque, the gas after will expanding by relief opening 11 is at last discharged.
Required repulsive force is according to compound function F between two magnet
o=f (m
1, m
2, f
1, f
2) come to determine m wherein
1Be leaf quality, m
2Be blade permanent magnet quality, f
1Be blade and blade groove or the friction factor between the magnetic blade groove, f
2Be the friction factor between blade and the end cap; The bore of stator radius is pressed
Determine, u=15～22m/s wherein, N is the sliding-vane motor design speed; The eccentric opening throw of eccentric is pressed
Determine, v=1.6～2.2m/s wherein, N is the sliding-vane motor design speed.Rotor radius is pressed r=R-e and is determined; Lobe numbers is chosen by Z=4～6, and length of blade is pressed the air cavity axial length and calculated, and width of blade is pressed h=(0.5～0.6) r and calculated.Blade groove or equal or be slightly larger than the height of blade every the degree of depth of magnetic blade groove.
The utility model is exactly the shortcomings and deficiencies for three kinds of pneumatic vane motors in the background technique, pass through technique scheme, utilize the magnetic field of same polarity can produce enough magnetic field thrust, guarantee that blade just closely contacts with stator inner surface before rotor rotates, thereby improve the sealability of blade and starting torque and the low speed torque of blade pneumatic motor, improve motor operations efficient.
Claims (1)
1. magnetic type selfsealings blade pneumatic motor, comprise by in order to bearing to be installed again as the front axle of output shaft, in order to bearings mounted rear axle, and the rotor of rotor body formation, stator, blade, front cover, rear end cover, described stator is the annular element of hollow, be processed with compressed air inlet port and relief opening on the stator, and in order to before installing, the tapped hole of rear end cover and other parts, before, be processed with to install the eccentric pivot hole of rotor bearing on the rear end cover, it is characterized in that, whether described pneumatic motor has magnetic conductivity according to rotor material can be divided into nonferromagnetic material rotor-type and ferromagnetic material rotor-type, for, the nonferromagnetic material rotor-type pneumatic motor that rotor is made by nonferromagnetic material, in the bottom of blade the blade permanent magnet is installed, the blade permanent magnet can be mobile with blade, radially evenly be processed with to install the blade groove of blade along rotor body, blade places in the blade groove, blade can move along rotor radial in blade groove, be processed with groove in the blade groove bottom, rotor permanent magnet is installed in the groove, the ferromagnetic material rotor-type pneumatic motor of being made by ferromagnetic material for rotor, in the bottom of blade the blade permanent magnet is installed, the blade permanent magnet can be mobile with blade, radially evenly be processed with deep trouth along rotor body, deep trouth is embedded in by having of making of high strength nonferromagnetic material certain thickness every the magnetic blade groove, every the magnetic blade groove permanent magnet and ferromagnetic rotor are isolated, blade places in the magnetic blade groove, blade can move along rotor radial in the magnetic blade groove, be fixed with permanent magnet every magnetic blade groove bottom, rotate with rotor every the magnetic blade groove, when described blade permanent magnet and rotor permanent magnet are installed, same pole must be installed relatively, be N-N, S-S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220184747 CN202673369U (en) | 2012-04-21 | 2012-04-21 | Magnetic force type self seal vane pneumatic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220184747 CN202673369U (en) | 2012-04-21 | 2012-04-21 | Magnetic force type self seal vane pneumatic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673369U true CN202673369U (en) | 2013-01-16 |
Family
ID=47494279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220184747 Expired - Fee Related CN202673369U (en) | 2012-04-21 | 2012-04-21 | Magnetic force type self seal vane pneumatic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673369U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748078A (en) * | 2012-04-21 | 2012-10-24 | 长沙润驰节能科技有限公司 | Magnetic force type self-sealing blade pneumatic motor |
| TWI481159B (en) * | 2013-02-23 | 2015-04-11 | Univ Nat Yunlin Sci & Tech | Energy conversion device with eccentric rotor |
-
2012
- 2012-04-21 CN CN 201220184747 patent/CN202673369U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748078A (en) * | 2012-04-21 | 2012-10-24 | 长沙润驰节能科技有限公司 | Magnetic force type self-sealing blade pneumatic motor |
| TWI481159B (en) * | 2013-02-23 | 2015-04-11 | Univ Nat Yunlin Sci & Tech | Energy conversion device with eccentric rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150421 |
|
| EXPY | Termination of patent right or utility model |