CN212479508U

CN212479508U - Noise elimination and noise reduction device for vacuum pump

Info

Publication number: CN212479508U
Application number: CN202020666166.8U
Authority: CN
Inventors: 杭玄昌; 蒋姣
Original assignee: Jiangsu Dongze Environmental Protection Technology Co ltd
Current assignee: Jiangsu Dongze Environmental Protection Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-02-05
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a device of making an uproar falls in vacuum pump noise elimination. The damping and noise-reducing mechanism is arranged at the bottom of the vacuum pump, and the vacuum pump is connected with the speed-reducing and noise-reducing mechanism through an air outlet pipe; the bottom of the vacuum pump is provided with a base, rubber pads are arranged at the parts of two ends of the base, which are contacted with the ground, the inner cavity of the base forms a first sound absorption chamber, sound absorption plates are arranged in the first sound absorption chamber and are arranged into a honeycomb structure, the base is provided with a sound transmission pipe, and the first sound absorption chamber is communicated with an air outlet pipe through the sound transmission pipe; the silencing tower is connected with the air outlet pipe, an air inlet of the silencing tower is provided with a speed reduction fan, the installation direction of the speed reduction fan is perpendicular to the air inlet direction, the middle section of the silencing tower expands to form a wind resistance chamber and a second sound absorption chamber respectively, the tail section of the silencing tower forms an exhaust duct, the wind resistance chamber is positioned above the speed reduction fan, a speed reduction ball is arranged in the wind resistance chamber, the wind resistance chamber is connected with the second sound absorption chamber, a micropore sound absorption plate is arranged in the second sound absorption chamber, the second sound absorption chamber is connected with the exhaust duct, and sound absorption cotton is laid on the inner surface of the exhaust duct.

Description

Noise elimination and noise reduction device for vacuum pump

The technical field is as follows:

the utility model belongs to the technical field of the vacuum pump is fallen and is fallen, in particular to vacuum pump noise elimination falls device of making an uproar.

Background art:

most of existing vacuum pump noise reduction devices only reduce noise of sucked air at an air outlet, but noise of a vacuum pump is also from vibration and object conduction of the vacuum pump, and the noise cannot be eliminated by a noise reduction tower. Meanwhile, most of the existing silencing towers are internally provided with sound absorption cotton and sound insulation materials, the wind noise comes from the too fast speed, and effective measures are not taken on the wind resistance of the existing silencing towers, so that the noise reduction effect is limited.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

The utility model has the following contents:

an object of the utility model is to provide a device of making an uproar falls in vacuum pump noise elimination to overcome the defect among the above-mentioned prior art.

In order to achieve the above object, the utility model provides a device of making an uproar falls in vacuum pump noise elimination, include: the vibration and noise reduction mechanism is arranged at the bottom of the vacuum pump, and the vacuum pump is connected with the vibration and noise reduction mechanism through the air outlet pipe; the vibration-damping and noise-reducing mechanism comprises a base, a rubber pad, a first sound-absorbing chamber, a sound-transmitting pipe and sound-absorbing boards, wherein the base is arranged at the bottom of the vacuum pump, the rubber pad is arranged at the part, which is in contact with the ground, of the two ends of the base, the inner cavity of the base forms the first sound-absorbing chamber, the sound-absorbing boards are arranged in the first sound-absorbing chamber and are arranged into a honeycomb structure, the sound-transmitting pipe is arranged on the base, and the first sound-absorbing chamber is communicated with; the mechanism of making an uproar falls in speed reduction includes the amortization tower, the speed reduction fan, the windage room, the second sound-absorbing chamber, the exhaust duct, the amortization tower is connected with the play tuber pipe, amortization tower air intake department is provided with the speed reduction fan, speed reduction fan installation direction is mutually perpendicular with the air inlet direction, the amortization tower middle section is enlarged and is formed the windage room respectively, the second sound-absorbing chamber, amortization tower tail section forms the exhaust duct, the windage room is located speed reduction fan top, be provided with the speed reduction ball in the windage room, the windage room is connected with the second sound-absorbing chamber, be provided with the micropore abatvoix in the second sound-absorbing chamber, the second sound-absorbing chamber is connected with.

Preferably, in the technical scheme, an auxiliary tower is arranged in the silencing tower, the auxiliary tower is positioned behind the speed reduction fan, a speed reduction ball is arranged in the auxiliary tower, and an air inlet screen is arranged at the lower part of the auxiliary tower.

Preferably, in the technical scheme, the deceleration ball is a solid plastic ball, and the outer surface of the deceleration ball is wrapped with foam.

Preferably, among the technical scheme, be provided with on the supplementary tower and inhale the sound nest, inhale the sound nest and be the semiellipse shape structure, inhale the inside porous structure that is of sound nest, inhale the sound nest and set up with the tuber pipe is relative, inhale the sound nest and be located the speed reduction fan rear.

Preferably, in the technical scheme, two groups of speed reducing fans are arranged in the silencing tower, and the two groups of speed reducing fans are symmetrically arranged by taking the air outlet pipe as a central axis; the speed reduction fan comprises a rotating shaft and fan blades, the rotating shaft is transversely arranged in the silencing tower, three groups of fan blades are symmetrically arranged on the outer surface of the rotating shaft, and the fan blades extend to the tail part from the head part of the rotating shaft.

Preferably, among the technical scheme, the number of the sound transmission pipes on the base is two, the two sound transmission pipes are arranged in parallel, one end of each sound transmission pipe is communicated with the bottom of the air outlet pipe, and the other end of each sound transmission pipe is communicated with the first sound absorption chamber.

Preferably, in the technical scheme, the inner pipe wall of the air outlet pipe is of a wave-shaped structure.

Preferably, among the technical scheme, the top of the silencing tower is provided with a rain hat, and the diameter of the rain hat is larger than that of the exhaust duct.

Compared with the prior art, the utility model discloses following beneficial effect has:

the vibration of the vacuum pump is reduced through the rubber pad, and the noise generated when the vacuum pump is rapidly blown out is transmitted to the first sound absorption chamber through the sound transmission pipe to be reduced. The wind speed entering the silencing tower is reduced through the speed reduction fan, the inlet wind is divided into an upper path and a lower path to respectively enter the wind resistance chamber and the auxiliary tower to be decelerated through the speed reduction ball, and finally, the absorption noise is consumed through the second sound absorption chamber and the exhaust duct, so that the noise reduction effect is improved.

Description of the drawings:

FIG. 1 is a schematic structural view of the noise-eliminating and noise-reducing device of the vacuum pump of the present invention;

FIG. 2 is a schematic view of the structure of the speed reduction fan of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is a schematic view of the air outlet pipe structure of the present invention;

the reference signs are: 1-vacuum pump, 2-air outlet pipe, 3-base, 4-rubber pad, 5-first sound absorption chamber, 6-sound transmission pipe, 7-sound absorption plate, 8-sound absorption tower, 9-speed reduction fan, 10-wind resistance chamber, 11-second sound absorption chamber, 12-exhaust duct, 13-speed reduction ball, 14-micropore sound absorption plate, 15-sound absorption cotton, 16-auxiliary tower, 17-speed reduction ball, 18-air inlet screen, 19-sound absorption nest, 20-rotating shaft, 21-fan blade, and 22-rain-proof cap.

The specific implementation mode is as follows:

the following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Example 1

As shown in fig. 1, a noise-reducing and noise-reducing device for a vacuum pump comprises a vibration-reducing and noise-reducing mechanism, a speed-reducing and noise-reducing mechanism and an air outlet pipe 2, wherein the vibration-reducing and noise-reducing mechanism is arranged at the bottom of the vacuum pump 1, and the vacuum pump 1 is connected with the speed-reducing and noise-reducing mechanism through the air outlet pipe 2; as shown in fig. 4, the inner wall of the air outlet pipe 2 is of a wave-shaped structure; the vibration and noise reduction mechanism comprises a base 3, rubber pads 4, a first sound absorption chamber 5, sound transmission pipes 6 and sound absorption plates 7, wherein the base 3 is arranged at the bottom of the vacuum pump 1, the rubber pads 4 are arranged at the parts, contacted with the ground, of the two ends of the base 3, the inner cavity of the base 3 forms the first sound absorption chamber 5, the sound absorption plates 7 are arranged in the first sound absorption chamber 5, the sound absorption plates 7 are arranged into a honeycomb structure, the base 3 is provided with the two sound transmission pipes 6, the two sound transmission pipes 6 are arranged in parallel, one end of each sound transmission pipe 6 is communicated with the bottom of the air outlet pipe 2, and the other end of each sound; the mechanism of making an uproar falls in speed reduction includes amortization tower 8, speed reduction fan 9, windage room 10, second sound-absorbing chamber 11, exhaust duct 12, assist tower 16, amortization tower 8 is connected with

play tuber pipe

2, 8 air inlets of amortization tower department is provided with speed reduction fan 9, speed reduction fan 9 direction of installation is mutually perpendicular with the air inlet direction, 8 middle sections of amortization tower expand and form windage room 10 respectively, second sound-absorbing

chamber

11, 8 tail sections of amortization tower form exhaust duct 12, windage room 10 is located speed reduction fan 9 top, be provided with speed reduction ball 13 in the windage room 10, windage room 10 is connected with second sound-absorbing chamber 11, be provided with micropore abatvoix 14 in the second sound-absorbing chamber 11, second sound-absorbing chamber 11 is connected with exhaust duct 12, sound cotton 15 is inhaled to laid to exhaust duct 12 internal surface. An auxiliary tower 16 is arranged in the silencing tower 8, the auxiliary tower 16 is positioned behind the speed reducing fan 9, as shown in fig. 3, a speed reducing ball 17 is arranged in the auxiliary tower 16, and an air inlet screen 18 is arranged at the lower part of the auxiliary tower 16. The

deceleration balls

13 and 17 are solid plastic balls, and the outer surfaces of the

deceleration balls

13 and 17 are wrapped with foam. The auxiliary tower 16 is provided with a sound absorption nest 19, the sound absorption nest 19 is of a semi-elliptical structure, the interior of the sound absorption nest 19 is of a porous structure, the sound absorption nest 19 is arranged opposite to the air outlet pipe 2, and the sound absorption nest 19 is positioned behind the speed reducing fan 9. Rain hat 22 is arranged on the top of the silencing tower 8, and the diameter of the rain hat 22 is larger than that of the exhaust duct 12.

As shown in fig. 1-2, two sets of speed reduction fans 9 are arranged in the silencing tower 8, and the two sets of speed reduction fans 9 are symmetrically arranged by taking the air outlet pipe 2 as a central axis; the decelerating fan 9 comprises a rotating shaft 20 and fan blades 21, the rotating shaft 20 is transversely arranged in the silencing tower 8, three groups of fan blades 21 are symmetrically arranged on the outer surface of the rotating shaft 20, and the fan blades 21 extend from the head part to the tail part of the rotating shaft 20.

Starting the vacuum pump 1, the wind speed of the air outlet end of the vacuum pump 1 is extremely high, and the wind speed is transmitted to the silencing tower 8 through the air outlet pipe 2. At this time, noise generated by the operation of the vacuum pump 1 is transmitted into the first sound absorbing chamber 5 through the sound transmission pipe 6 by physical conduction, and the noise is absorbed and consumed by the first sound absorbing chamber 5 through the sound absorbing plates 7 arranged in the honeycomb structure, so that the noise generated by the operation of the vacuum pump 1 itself is reduced. Rotating shaft 20 and fan blades 21 are arranged inside silencing tower 8, friction between rotating shaft 20 and silencing tower 8 is large, and when air enters to push fan blades 21 to rotate, air speed can be reduced. Meanwhile, the positive outlet of the air outlet pipe 2 corresponds to the sound absorption nest 19, and can absorb part of noise generated by high-speed wind. Fan blade 21 can be with two directions conduction of wind direction, and the wind of downward conduction can get into and assist tower 16 through air inlet screen 18, sets up speed reduction ball 17 in assisting tower 16, and speed reduction ball 17 can block wind, and because surface parcel foam, the collision between the flying back of speed reduction ball 17 can not the noise, and later wind-force gets into windage chamber 10, places a plurality of speed reduction balls 13 in the windage chamber 10 equally, reduces the windage. After wind passes through the wind resistance chamber 10, the wind force is weakened, noise generated by the wind passes through the second sound absorption chamber 11 and is consumed and absorbed by the microporous sound absorption plate 14, then the wind enters the exhaust duct 12, and residual tiny noise can be absorbed by the sound absorption cotton 15.

The utility model provides a problem that the noise that vacuum pump self vibrations produced can't be eliminated, solved the amortization tower and not set up the problem that effectively reduces the windage structure.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a device of making an uproar falls in vacuum pump noise elimination which characterized in that: the vibration and noise reduction device comprises a vibration and noise reduction mechanism, a deceleration and noise reduction mechanism and an air outlet pipe, wherein the vibration and noise reduction mechanism is arranged at the bottom of a vacuum pump, and the vacuum pump is connected with the deceleration and noise reduction mechanism through the air outlet pipe; the vibration-damping and noise-reducing mechanism comprises a base, a rubber pad, a first sound-absorbing chamber, a sound-transmitting pipe and sound-absorbing boards, wherein the base is arranged at the bottom of the vacuum pump, the rubber pad is arranged at the part, which is in contact with the ground, of the two ends of the base, the inner cavity of the base forms the first sound-absorbing chamber, the sound-absorbing boards are arranged in the first sound-absorbing chamber and are arranged into a honeycomb structure, the sound-transmitting pipe is arranged on the base, and the first sound-absorbing chamber is communicated with; the mechanism of making an uproar falls in speed reduction includes the amortization tower, the speed reduction fan, the windage room, the second sound-absorbing chamber, the exhaust duct, the amortization tower is connected with the play tuber pipe, amortization tower air intake department is provided with the speed reduction fan, speed reduction fan installation direction is mutually perpendicular with the air inlet direction, the amortization tower middle section is enlarged and is formed the windage room respectively, the second sound-absorbing chamber, amortization tower tail section forms the exhaust duct, the windage room is located speed reduction fan top, be provided with the speed reduction ball in the windage room, the windage room is connected with the second sound-absorbing chamber, be provided with the micropore abatvoix in the second sound-absorbing chamber, the second sound-absorbing chamber is connected with.

2. A vacuum pump noise damping and noise reducing arrangement according to claim 1, wherein: an auxiliary tower is arranged in the silencing tower, the auxiliary tower is located behind the speed reduction fan, a speed reduction ball is arranged in the auxiliary tower, and an air inlet screen is arranged on the lower portion of the auxiliary tower.

3. A vacuum pump noise damping and noise reducing arrangement according to claim 2, wherein: the deceleration ball is a solid plastic ball, and the outer surface of the deceleration ball is wrapped with foam.

4. A vacuum pump noise damping and noise reducing arrangement according to claim 2, wherein: be provided with on the supplementary tower and inhale the sound nest, inhale the sound nest and be half oval structure, inhale the inside porous structure that is of sound nest, inhale the sound nest and set up with going out the tuber pipe relatively, inhale the sound nest and be located the speed-down fan rear.

5. A vacuum pump noise damping and noise reducing arrangement according to claim 2, wherein: two groups of speed reducing fans are arranged in the silencing tower, and are symmetrically arranged by taking the air outlet pipe as a central axis; the speed reduction fan comprises a rotating shaft and fan blades, the rotating shaft is transversely arranged in the silencing tower, three groups of fan blades are symmetrically arranged on the outer surface of the rotating shaft, and the fan blades extend to the tail part from the head part of the rotating shaft.

6. A vacuum pump noise damping and noise reducing arrangement according to claim 2, wherein: the sound transmission pipes on the base are arranged in parallel, one end of each sound transmission pipe is communicated with the bottom of the air outlet pipe, and the other end of each sound transmission pipe is communicated with the first sound absorption chamber.

7. A vacuum pump noise damping and noise reducing arrangement according to claim 2, wherein: the inner pipe wall of the air outlet pipe is of a wave-shaped structure.

8. A vacuum pump noise damping and noise reducing arrangement according to claim 2, wherein: the top of the silencing tower is provided with a rain hat, and the diameter of the rain hat is larger than that of the exhaust duct.