CN211351929U - Noise reduction device for permanent magnet brushless motor for industrial fan - Google Patents

Abstract

The utility model provides a noise reduction device for a permanent magnet brushless motor for an industrial fan, which comprises a case shell, wherein the permanent magnet brushless motor is arranged inside the case shell, the middle part of the right end of the permanent magnet brushless motor is movably connected with a rotating shaft, the right end of the rotating shaft is fixedly connected with the industrial fan, the middle part of the left side of the inner wall of the case shell is provided with a guide hole, the inner wall of the guide hole is fixedly connected with a sound-absorbing sponge, and the inner wall of the case shell is provided with a cavity; the utility model discloses a set up the arch on quick-witted case inner wall to can reflect the transmission of sound wave, reach the effect that weakens the sound wave, and the sound sponge of inhaling in the guide hole then is further absorption and falls the sound wave, and the soundproof cotton in the cavity of deuterogamying plays the effect of isolated sound wave, has finally reached the effect of making an uproar of falling the permanent magnet brushless motor in the industrial fan.

Description

Noise reduction device for permanent magnet brushless motor for industrial fan

Technical Field

The utility model relates to an industrial equipment technical field specifically is a permanent magnet brushless motor is with device of making an uproar that falls for industrial fan.

Background

The industry is one of the most important material production departments in national economy, and is mainly a process of processing or assembling natural resources and raw materials, and various industrial devices are used in the industrial production, wherein industrial fans are used for ventilation and cooling.

But at present when using industrial fan, because its inside use be permanent magnet brushless motor for the fan provides kinetic energy to when specific use, permanent magnet brushless motor can produce noise pollution, influences workman's physical and mental health, is unfavorable for work efficiency's improvement, and then can drag holistic industrial production's progress slowly.

Disclosure of Invention

The utility model provides a be not enough to prior art, the utility model provides a permanent magnet brushless motor for industrial fan is with device of making an uproar falls possesses advantages such as noise reduction effect is good, has solved current industrial fan and can produce noise pollution's problem when using.

The utility model discloses a device of making an uproar falls for permanent magnet brushless motor for industrial fan, including the casing of the case, the inside of casing of the case is provided with permanent magnet brushless motor, permanent magnet brushless motor's right-hand member middle part swing joint has the pivot, the right-hand member fixedly connected with industrial fan of pivot, the guide hole has been seted up at the left side middle part of casing inner wall of the case, fixedly connected with inhales the sound sponge on the inner wall in guide hole, has seted up the cavity on the inner wall of casing of the case, the right side of cavity link up with the left side in guide hole, fixedly connected with soundproof cotton on the inner wall of cavity, fixedly connected with is protruding on the inner wall of casing.

The utility model discloses a permanent magnet brushless motor is with device of making an uproar that falls for industrial fan, the arch is designed into semi-circular, just protruding evenly distributed is on the inner wall of casing, bellied inside is provided with inert gas, through setting up inert gas in bellied inside, plays further transmission that weakens the sound wave.

The utility model discloses a device of making an uproar falls for permanent magnet brushless motor for industrial fan, the top and the equal fixedly connected with sleeve in bottom of casing inner wall of the case, telescopic inner wall swing joint has the spring, swing joint has the movable rod on the inner wall of spring, the one end fixedly connected with dog of spring is kept away from to the movable rod, permanent magnet brushless motor's one end is kept away from to the dog and the one end fixed connection that the spring is close to permanent magnet brushless motor, two the movable rod keep away from telescopic one end respectively with permanent magnet brushless motor's top surface and bottom fixed connection, through movable rod cooperation spring at telescopic inside shrink to play and carried out absorbing effect to permanent magnet brushless motor, avoided permanent magnet brushless motor because of the problem of vibrations noise generation.

The utility model discloses a device of making an uproar falls for permanent magnet brushless motor for industrial fan, the right-hand member fixed surface of pivot is connected with the master gear, the surperficial swing joint of master gear has the drive wheel, the side fixedly connected with bull stick of drive wheel, the left end fixedly connected with flabellum of bull stick through the setting of master gear and drive wheel, has played and has openly carried out radiating effect to permanent magnet brushless motor.

The utility model discloses a device of making an uproar falls for permanent magnet brushless motor for industrial fan, the quantity of flabellum is two, two the flabellum symmetric distribution is in the upper and lower both sides of pivot, downside the left side of flabellum is provided with the air inlet cover, the left end fixedly connected with pipeline of air inlet cover, the left side top fixedly connected with of pipeline goes out the fan housing, the right-hand member that goes out the fan housing corresponds with permanent magnet brushless motor's left side, through the air inlet cover with go out the setting of fan housing, has played and has carried out radiating effect to the permanent magnet brushless motor back.

The utility model discloses a device of making an uproar falls for permanent magnet brushless motor for industrial fan, the fixed surface of pipeline is connected with the dead lever, the outside of master gear is provided with the box, through the setting of dead lever and box, plays the supporting role to the pipeline and the guard action to the master gear respectively.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the arch on quick-witted case inner wall to can reflect the transmission of sound wave, reach the effect that weakens the sound wave, and the sound sponge of inhaling in the guide hole then is further absorption and falls the sound wave, and the soundproof cotton in the cavity of deuterogamying plays the effect of isolated sound wave, has finally reached the effect of making an uproar of falling the permanent magnet brushless motor in the industrial fan.

2. The utility model discloses a set up inert gas in bellied inside, play further transmission that weakens the sound wave, and movable rod cooperation spring is at telescopic inside shrink to played and carried out absorbing effect to permanent magnet brushless motor, avoided permanent magnet brushless motor because of vibrations the problem of noise production.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of a front cross-sectional structure of the present invention;

fig. 2 is a schematic left side sectional view of the present invention.

In the figure: 1. a housing of the chassis; 2. a permanent magnet brushless motor; 3. a rotating shaft; 4. an industrial fan; 5. a guide hole; 6. sound-absorbing sponge; 7. a cavity; 8. sound insulation cotton; 9. a protrusion; 10. a movable rod; 11. a stopper; 12. a spring; 13. a sleeve; 14. a main gear; 15. a driving wheel; 16. a rotating rod; 17. a fan blade; 18. a box body; 19. an air inlet cover; 20. a pipeline; 21. an air outlet cover; 22. and (5) fixing the rod.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-2, the noise reducer for permanent magnet brushless motor for industrial fan of the present invention comprises a housing 1, a permanent magnet brushless motor 2 is disposed inside the housing 1, a rotating shaft 3 is movably connected to the middle of the right end of the permanent magnet brushless motor 2, an industrial fan 4 is fixedly connected to the right end of the rotating shaft 3, a guide hole 5 is formed in the middle of the left side of the inner wall of the housing 1, a sound absorbing sponge 6 is fixedly connected to the inner wall of the guide hole 5, a cavity 7 is formed in the inner wall of the housing 1, the right side of the cavity 7 is communicated with the left side of the guide hole 5, a soundproof cotton 8 is fixedly connected to the inner wall of the cavity 7, a protrusion 9 is fixedly connected to the inner wall of the housing 1, the protrusion 9 is formed on the inner wall of the housing 1, thereby transmitting sound waves can be reflected, the effect of attenuating sound waves is achieved, the sound absorbing sponge 6 in the guide hole 5 further absorbs sound waves, and the soundproof cotton 8 in the cavity 7 is matched to play a role in isolating sound waves, and finally the effect of reducing the noise of the permanent magnet brushless motor 2 in the industrial fan 4 is achieved.

The bulges 9 are designed into a semi-circle shape, the bulges 9 are uniformly distributed on the inner wall of the machine case shell 1, inert gas is arranged inside the bulges 9, and the transmission of sound waves is further weakened by arranging the inert gas inside the bulges 9.

Top and the equal fixedly connected with sleeve 13 in bottom of 1 inner wall of case casing, the inner wall swing joint of sleeve 13 has spring 12, swing joint has movable rod 10 on spring 12's the inner wall, the one end fixedly connected with dog 11 of spring 12 is kept away from to movable rod 10, dog 11 keeps away from permanent magnet brushless motor 2's one end and spring 12 and is close to permanent magnet brushless motor 2's one end fixed connection, two movable rods 10 keep away from sleeve 13's one end respectively with permanent magnet brushless motor 2's top surface and bottom fixed connection, through the inside shrink of movable rod 10 cooperation spring 12 at sleeve 13, thereby played and carried out absorbing effect to permanent magnet brushless motor 2, the problem of permanent magnet brushless motor 2 noise because of vibrations has been avoided.

The surface of the right end of the rotating shaft 3 is fixedly connected with a main gear 14, the surface of the main gear 14 is movably connected with a driving wheel 15, the side surface of the driving wheel 15 is fixedly connected with a rotating rod 16, the left end of the rotating rod 16 is fixedly connected with fan blades 17, and the arrangement of the main gear 14 and the driving wheel 15 plays a role in radiating the front surface of the permanent magnet brushless motor 2.

The quantity of flabellum 17 is two, and two flabellum 17 symmetric distributions are in the upper and lower both sides of pivot 3, and the left side of downside flabellum 17 is provided with air inlet cover 19, and air inlet cover 19's left end fixedly connected with pipeline 20, pipeline 20's left side top fixedly connected with go out fan housing 21, and the right-hand member that goes out fan housing 21 corresponds with permanent magnet brushless motor 2's left side, through air inlet cover 19 and the setting that goes out fan housing 21, has played and has carried out radiating effect to permanent magnet brushless motor 2 back.

The fixing rod 22 is fixedly connected to the surface of the pipe 20, the box 18 is disposed outside the main gear 14, and the fixing rod 22 and the box 18 are disposed to support the pipe 20 and protect the main gear 14, respectively.

When using the utility model discloses the time: when the permanent magnet brushless motor 2 generates sound waves when working, the sound waves are firstly reflected by the bulge 9 to block the outward transmission of the sound waves, meanwhile, the inert gas in the bulge 9 plays a role of weakening the transmission of the sound waves, the sound-absorbing sponge 6 in the guide hole 5 further absorbs a part of the sound waves, the other part of the sound waves pass through the guide hole 5 and enter the cavity 7, and then the sound-insulating cotton 8 in the cavity 7 is matched to play a role of isolating the transmission of the last part of the sound waves, and finally the effect of reducing the noise of the permanent magnet brushless motor 2 in the industrial fan 4 is achieved, when the permanent magnet brushless motor 2 is started, the main gear 14 on the rotating shaft 3 drives the driving wheel 15 to rotate, the driving wheel 15 drives the rotating rod 16 to rotate, the fan blades 17 on the rotating rod 16 rotate along with the rotating wheel, and further the heat dissipation effect is carried out on the front side of the permanent magnet brushless motor 2, and the wind blown out by the fan blade 17 below the rotating shaft 3 can enter the wind inlet cover 19 and then is blown out from the wind outlet cover 21 to the back of the permanent magnet brushless motor 2 through the pipeline 20, so that the effect of radiating the back of the permanent magnet brushless motor 2 is achieved, and the situation that the temperature of the permanent magnet brushless motor 2 is too high is prevented.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a permanent magnet brushless motor is with device of making an uproar that falls for industrial fan, includes casing (1), its characterized in that: the inside of quick-witted case casing (1) is provided with permanent magnet brushless motor (2), the right-hand member middle part swing joint of permanent magnet brushless motor (2) has pivot (3), right-hand member fixedly connected with industrial fan (4) of pivot (3), guide hole (5) have been seted up at the left side middle part of quick-witted case casing (1) inner wall, fixedly connected with inhales sound sponge (6) on the inner wall of guide hole (5), has seted up cavity (7) on the inner wall of quick-witted case casing (1), the right side of cavity (7) link up with the left side of guide hole (5), fixedly connected with soundproof cotton (8) on the inner wall of cavity (7), fixedly connected with arch (9) on the inner wall of quick-witted case casing (1).

2. The noise reduction device for the permanent magnet brushless motor for the industrial fan according to claim 1, characterized in that: the bulges (9) are designed into a semi-circle shape, the bulges (9) are uniformly distributed on the inner wall of the machine case shell (1), and inert gas is arranged inside the bulges (9).

3. The noise reduction device for the permanent magnet brushless motor for the industrial fan according to claim 1, characterized in that: the top and the equal fixedly connected with sleeve (13) in bottom of quick-witted case casing (1) inner wall, the inner wall swing joint of sleeve (13) has spring (12), swing joint has movable rod (10) on the inner wall of spring (12), one end fixedly connected with dog (11) of spring (12) are kept away from in movable rod (10), the one end that permanent magnet brushless motor (2) were kept away from in dog (11) and spring (12) are close to the one end fixed connection of permanent magnet brushless motor (2), two the one end that sleeve (13) were kept away from in movable rod (10) respectively with the top surface and the bottom fixed connection of permanent magnet brushless motor (2).

4. The noise reduction device for the permanent magnet brushless motor for the industrial fan according to claim 1, characterized in that: the fan blade rotating mechanism is characterized in that a main gear (14) is fixedly connected to the surface of the right end of the rotating shaft (3), a driving wheel (15) is movably connected to the surface of the main gear (14), a rotating rod (16) is fixedly connected to the side face of the driving wheel (15), and fan blades (17) are fixedly connected to the left end of the rotating rod (16).

5. The noise reduction device for the permanent magnet brushless motor for the industrial fan according to claim 4, wherein: the quantity of flabellum (17) is two, two flabellum (17) symmetric distribution is in the upper and lower both sides of pivot (3), downside the left side of flabellum (17) is provided with air inlet cover (19), the left end fixedly connected with pipeline (20) of air inlet cover (19), the left side top fixedly connected with of pipeline (20) goes out fan housing (21), the right-hand member that goes out fan housing (21) corresponds with the left side of permanent magnet brushless motor (2).

6. The noise reduction device for the permanent magnet brushless motor for the industrial fan according to claim 5, wherein: the surface of the pipeline (20) is fixedly connected with a fixing rod (22), and a box body (18) is arranged outside the main gear (14).

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