CN205243562U

CN205243562U - Pneumatic motor

Info

Publication number: CN205243562U
Application number: CN201521020321.4U
Authority: CN
Inventors: 陈春生; 周伟征
Original assignee: Beijing Qialishen Metal Structure Co Ltd
Current assignee: Beijing Qialishen Metal Structure Co Ltd
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2016-05-18
Anticipated expiration: 2025-12-10

Abstract

The utility model discloses a pneumatic motor, including casing, stator and rotor, be provided with a plurality of gas tanks on the rotor, each the gas tank all is provided with a blade, the symmetrical setting of the central axis of rotor is followed to the gas tank, and two gas tanks that just are located on the symmetrical direction communicate through a logical groove, it is provided with a shank to lead to the groove, the both ends of shank respectively with two blade butts, when the rotor rotates, the shank can follow to slide in logical groove so that the blade that is located its both ends all the time with the inner wall butt of stator. Having changed originally blade and the inner wall springiness contaction's of stator structure, having become the rigidity contact with it, when its inside hard thing or impurity of appearing, can directly not block and to die, and owing to be the rigidity contact, so can do not not blocked by hard thing, huge pressure can make the cylindric lock promote the blade and guarantee impurity and discharge, concrete principle as follows because the length summation of two blades and cylindric lock equals the inner wall diameter of stator just, so just enable rotor normal rotation.

Description

Air motor

Technical field

The utility model relates to a kind of power source, more relates to the rotating power source as complex appts or machine, and more particularly, it relates to air motor.

Background technology

In Pneumatic Transmission, the pressure energy of Compressed Gas is converted to mechanical energy and produces the pneumatic apparatus rotatablely moving. Conventional air pressure motor is positive displacement air motor, and it utilizes the volume-variation of working chamber to carry out work done. Air motor with respect to the main distinction of motor (or claiming motor) is: 1. small size can produce high power. 2. high-adaptability, temperature rise is less, and rotating speed can change with load, until overload is shut down and can not produced any damage to air motor, can consider to adopt lower safety coefficient while therefore selection. 3. anxious startup, anxious shutdown, is particularly suitable for the occasion of frequent starting, and commutation is very easy to. 4. simple stepless speed regulation, from zero to maximum, flexible operation. 5. starting torque is larger, can be with to carry to start. 6. simple in structure, air motor is long especially service life. 7. be not subject to the impact of external environment condition, even in water, in many dirt, humidity, the adverse circumstances such as dirty, because internal pressure is all large than external pressure when air motor running. 8. safety, explosion-proof, air motor does not produce the hazards such as spark, overheated, blast, short circuit (electricity), is particularly useful for the environment with flammable and explosive substance or high temperature, as the stirring to solvent, paint, chemicals etc.

In prior art, air motor generally comprises housing, stator and rotor, housing is provided with two gas ports, enclosure interior is provided with stator, stator interior hollow, and be equipped with rotor, the rotating shaft of rotor passes and extends to hull outside, stator and housing are eccentric settings, rotor arranges with housing is concentric, on rotor, be also provided with blade, described blade is along in the air drain that is circumferentially uniformly distributed and is arranged in rotor of rotor, by apply the power of extruding on cavity, blade is stretched out and the inwall butt of stator from air drain, so that form seal cavity between adjacent blade, when gases at high pressure are during from one end air inlet, because promoting blade rotor driven, the effect of air pressure rotates, complete driving. in general, being provided with sealing ring on stator, in order to ensure that shell and stator closely cooperate, is all generally that sealing ring is arranged to seal completely, but needs undoubtedly to reduce like this gap of other position stators and housing, but just very inconvenient in the time of assembling like this.

Utility model content

The deficiency existing for prior art, the purpose of this utility model is to provide under a kind of prerequisite that can ensure sealing, has strengthened a kind of air motor of the design gaps between stator and housing.

For achieving the above object, the utility model provides following technical scheme: air motor, comprise housing, stator and rotor, on described rotor, be provided with some air drains, described in each, air drain is provided with a blade, on described stator, be provided with a draw-in groove, described draw-in groove inside is provided with a Y type sealing strip, described Y type sealing strip comprises the first support portion, the second support portion and Access Division, the first support portion and the second support portion arrange along described Access Division Central Symmetry, in the time that described Y type sealing strip is arranged in draw-in groove, conflict with inner walls and draw-in groove respectively in the first support portion and the second support portion.

Further: described the first support portion is provided with the first plane for the housing of conflicting, described the second support portion is provided with the second plane for the draw-in groove of conflicting. Described air drain is symmetrical arranged along the central axis of rotor, and two air drains that are positioned on symmetry direction are communicated with by a groove, described groove is provided with a shank, the two ends of described shank respectively with two blade butts, when described rotor rotates, described shank can be along groove slippage so that the blade that is positioned at its two ends all the time with the inwall butt of stator. By such setting, change the structure of the inwall Elastic Contact of script blade and stator, become rigidity contact, occurred hard thing or impurity when it is inner, can be directly not stuck, and owing to being rigidity contact, so can not blocked by hard thing, huge pressure can make straight pin promote blade and ensure impurity discharge, and concrete principle is as follows, because being added, the length of two blades and straight pin just equals the inner diameter of stator, so just can make rotor normal rotation.

Further: coaxially the arranging with described housing of described rotor. By rotor and housing are coaxially arranged, can make transmission more stable, in order to meet the demand of rotating, stator must eccentric setting, just can make rotor normally rotate at the inwall of stator.

Further: described air drain is set to six, corresponding, described shank is set to three. If general air drain is too many, can make pressure unequal, six air drains are set, make transmission efficiency higher.

Further: described shank is set to cylindrical. Arrange by columniform shank, can ensure the stability of transmission, and the sealing of air drain.

Further: described stator is provided with eccentric lobe, a seal is set in described eccentric lobe, by described seal, realizes the inwall interference fit of stator and housing. By such setting, ensure, under the prerequisite of its structural strength, to have improved air-tightness.

By adopting technique scheme, change the structure of the inwall Elastic Contact of script blade and stator, become rigidity contact, occurred hard thing or impurity when it is inner, can be directly not stuck, and owing to being rigidity contact, so can not blocked by hard thing, huge pressure can make straight pin promote blade and ensure impurity discharge, and concrete principle is as follows, because being added, the length of two blades and straight pin just equals the inner diameter of stator, so just can make rotor normal rotation.

So artificial increasing fit clearance, machined and assembly problem have all been solved, so want air tightly, meet pneumatic horse behavior in service, add Y type sealing strip at airintake direction, when air inlet, blow another side, make it be close to shell, thereby reach sealing effectiveness

Brief description of the drawings

Fig. 1 is air motor cutaway view;

Fig. 2 is straight pin schematic diagram.

Reference numeral: 1, housing; 11, air inlet; 12, gas outlet; 2, stator; 21, eccentric lobe; 22, draw-in groove; 221, y-shaped ring; 3, rotor; 31, air drain; 32, blade; 33, straight pin; 331, chamfering; 34, groove.

Detailed description of the invention

Referring to figs. 1 through Fig. 2, the utility model is described further.

Shown in Fig. 1, air motor, comprise housing 1, stator 2 and rotor 3, be provided with some air drains 31 on rotor 3, each air drain 31 is provided with a blade 32, air drain 31 is symmetrical arranged along the central axis of rotor 3, and two air drains 31 that are positioned on symmetry direction are communicated with by a groove 34, and groove 34 is provided with a shank, the two ends of shank respectively with two blade 32 butts, when rotor 3 rotates, shank can be along groove 34 slippages so that the blade 32 that is positioned at its two ends all the time with the inwall butt of stator 2. Coaxially arranging with housing 1 of rotor 3. As shown in the figure, gases at high pressure are pressed into the inner chamber of stator 2 from air inlet 11, and then rotor 3 blades 32 start to rotate, and gases at high pressure being discharged from gas outlet 12 ensured can regular event, and air drain 31 is set to six, corresponding, shank is set to three. Shank is set to cylindrical. Stator 2 is provided with eccentric lobe 21, and a seal is set in eccentric lobe 21, by seal, realizes the inwall interference fit of stator 2 and housing 1. Two end faces of straight pin 33 are provided with chamfering 331, in order to prevent that straight pin 33 from wearing and tearing when the through hole slippage, seal is set to y-shaped ring 221, sealing ring is arranged in draw-in groove 22, so that ensure can be under the prerequisite of normal dismounting stator 2, when installation than circular seal ring 221 sealing effectiveness more.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model. It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. air motor, comprise housing, stator and rotor, on described rotor, be provided with some air drains, described in each, air drain is provided with a blade, it is characterized in that: on described stator, be provided with a draw-in groove, described draw-in groove inside is provided with a Y type sealing strip, described Y type sealing strip comprises the first support portion, the second support portion and Access Division, the first support portion and the second support portion arrange along described Access Division Central Symmetry, in the time that described Y type sealing strip is arranged in draw-in groove, conflict with inner walls and draw-in groove respectively in the first support portion and the second support portion.

2. air motor as claimed in claim 1, is characterized in that: described the first support portion is provided with the first plane for the housing of conflicting, and described the second support portion is provided with the second plane for the draw-in groove of conflicting.

3. air motor as claimed in claim 1, is characterized in that: described air drain is set to six, corresponding, shank is set to three.

4. air motor as claimed in claim 3, is characterized in that: described shank is set to cylindrical.

5. air motor as claimed in claim 1, is characterized in that: described stator is provided with eccentric lobe, and a seal is set in described eccentric lobe, by described seal, realizes the inwall interference fit of stator and housing.