CN214273943U

CN214273943U - Noise reduction device of Roots blower

Info

Publication number: CN214273943U
Application number: CN202023156390.1U
Authority: CN
Inventors: 张玉宏; 靖相炯; 刘长青
Original assignee: Shandong Haifude Machinery Co ltd
Current assignee: Shandong Haifude Machinery Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-24
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses a roots blower noise reduction device, include box, intake pipe, outlet duct, dust removal filter screen, drawer box, vibrating motor, inhale sound cotton, amortization cap, ventilative hose, water conservancy diversion abatvoix and buffering damping device, be equipped with the amortization chamber in the box, it places the chamber to be equipped with the dust removal in the box lateral wall, the intracavity is placed in the dust removal to the dust removal filter screen is located, the box lateral wall is equipped with the drawer spout, drawer box slides and locates in the drawer spout, vibrating motor locates on the box is close to the lateral wall of dust removal filter screen, the intake pipe is located on the box lateral wall, be equipped with the shock attenuation chamber in the box diapire, buffering damping device locates the shock attenuation intracavity, first amortization chamber middle part is located to the amortization cap, ventilative hose both ends are located respectively on second amortization chamber both sides wall, the outlet duct is located on the box lateral wall. The utility model relates to a blower amortization accessory technical field specifically provides a noise reduction device is fallen to roots blower that noise reduction effect is good.

Description

Noise reduction device of Roots blower

Technical Field

The utility model relates to a blower amortization accessory technical field specifically is a device of making an uproar falls in roots blower.

Background

The Roots blower belongs to a positive displacement blower, and the end faces of an impeller and front and rear end covers of the blower. The principle is a rotary compressor which compresses and conveys gas by utilizing the relative motion of two blade-shaped rotors in a cylinder. The blower has simple structure and convenient manufacture, is widely applied to aquaculture oxygenation, sewage treatment aeration and cement conveying, is more suitable for a gas conveying and pressurizing system in a low-pressure occasion, and can also be used as a vacuum pump and the like; the roots blower has the advantages of high pressure head, small flow resistance influence, stable air supply and the like, but the defects of low efficiency and high noise generally exist in the using process, the noise of the roots blower is generated by different noise sources in the blower, but the generated parts are different and comprise: aerodynamic noise at the input and output ports; the mechanical chassis and the engine generate noise with radiation; when the roots blower is used in industrial production in the prior art, a noise reduction measure that the whole blower is subjected to sound insulation treatment by using a sound insulation cover or is wrapped by using a sound insulation material at an inlet and outlet pipeline of the roots blower with large noise and wide radiation range is adopted, so that the actual emission of noise of a plurality of industrial enterprises cannot reach the standard of environmental noise emission of industrial enterprise factories.

SUMMERY OF THE UTILITY MODEL

To the above circumstances, for overcoming current technical defect, the utility model provides a noise reduction device is fallen to roots blower that noise reduction effect is good.

The utility model adopts the following technical scheme: the utility model relates to a Roots blower noise reduction device, which comprises a box body, an air inlet pipe, an air outlet pipe, a dust removal filter screen, a drawer box, a vibration motor, sound absorption cotton, a silencing cap, a ventilating hose, a flow guide silencing board and a buffering and damping device, wherein a silencing cavity is arranged in the box body, the silencing cavity is provided with three groups, the silencing cavities are respectively a first silencing cavity, a second silencing cavity and a third silencing cavity from left to right in sequence, a dust removal placing cavity is arranged in the side wall of the box body, the dust removal filter screen is arranged in the dust removal placing cavity, the side wall of the box body is provided with a drawer chute, the drawer chute is communicated with the dust removal placing cavity, the drawer box is slidably arranged in the drawer chute, the drawer box is positioned below the dust removal filter screen, the vibration motor is arranged on the side wall of the box body close to the dust removal filter screen, the side wall of the dust removal placing cavity is provided with an air vent, the air vent is communicated with the first silencing cavity, the air inlet pipe is arranged on the side wall of the box body, the air inlet pipe is communicated with the dust removal placing cavity, the sound absorption cotton is provided with two groups, the two groups of sound absorption cotton are respectively arranged on the top wall and the bottom wall of the sound reduction cavity, a shock absorption cavity is arranged in the bottom wall of the box body, the buffering shock absorption device is arranged in the shock absorption cavity, the sound absorption cap is arranged in the middle of the first sound reduction cavity, a sound absorption cavity with an opening side wall is arranged in the sound absorption cap, a damping sound insulation pad is arranged on the side wall of the sound absorption cavity, two ends of the ventilating hose are respectively arranged on two side walls of the second sound reduction cavity, two ends of the ventilating hose are respectively communicated with the first sound reduction cavity and the third sound reduction cavity, the side wall of the second sound reduction cavity is provided with honeycomb holes, the honeycomb holes are communicated with the third sound reduction cavity, the air outlet pipe is arranged on the side wall of the box body, the air outlet pipe is communicated with the third sound reduction cavity, the flow guide sound attenuation plate is arranged in the third sound reduction cavity, and the glass wool is arranged on the flow guide sound attenuation plate, the diversion muffling plates are arranged in a V-shaped structure, and two groups of diversion muffling plates are symmetrically arranged around the central axis of the third muffling cavity; buffering damping device includes shock attenuation sound-proof pad, buffer spring and buffering support column, shock attenuation sound-proof pad is located the shock attenuation intracavity, the shock attenuation intracavity is located to the buffering support column, buffer spring locates the shock attenuation intracavity, the buffering support column is located buffer spring.

Furthermore, the inner side wall of the drawer box is provided with a sealing ring, so that gas is prevented from flowing out from a gap of the drawer box.

Furthermore, the breathable hoses are provided with a plurality of groups which are uniformly distributed.

Further, the buffering support column is equipped with the multiunit, the multiunit the buffering support column is evenly distributed, buffer spring corresponds the setting with the buffering support column, the shock attenuation gives sound insulation and fills up and is located between the multiunit buffering support column.

Further, the drawer box is provided with a handle.

Furthermore, the honeycomb holes are provided with a plurality of groups which are uniformly distributed.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: this scheme device of making an uproar falls in roots blower has realized through buffering damping device that the device of making an uproar falls in roots blower to the impact that gas flows fast and produces the box lead to the box vibrations to carry out the shock attenuation thereby reach noise reduction effect, has realized through the amortization structure cooperation of three groups of sound reducing intracavity that roots blower falls the device of making an uproar and falls the sound that gas flow produced, has realized through the dust removal filter screen that roots blower falls the device of making an uproar and removes dust to gas to have dust removal function.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a noise reduction device of a Roots blower according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic diagram of a noise reduction device of a Roots blower according to the present invention;

fig. 4 is a schematic structural diagram of the flow guiding silencing plate of the noise reduction device of the roots blower of the present invention.

The vibration-damping dust-proof box comprises a box body 1, a box body 2, an air inlet pipe 3, an air outlet pipe 4, a dust-removing filter screen 5, a drawer box 6, a vibration motor 7, sound-absorbing cotton 8, a noise-damping cap 9, a ventilating hose 10, a flow-guiding noise-damping board 11, a buffering and damping device 12, a first noise-reducing cavity 13, a second noise-reducing cavity 14, a third noise-reducing cavity 15, a dust-removing placing cavity 16, a shock-absorbing cavity 17, honeycomb holes 18, vent holes 19, glass silk floss 20, a shock-absorbing sound-insulating pad 21, a buffering spring 22, a buffering supporting column 23, a sealing ring 24, a handle 25 and a damping sound-insulating pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-4, the technical scheme adopted by the utility model is as follows: a noise reduction device of a Roots blower comprises a box body 1, an air inlet pipe 2, an air outlet pipe 3, a dust removal filter screen 4, a drawer box 5, a vibration motor 6, sound absorption cotton 7, a sound absorption cap 8, a ventilating hose 9, a flow guide sound absorption plate 10 and a buffer shock absorption device 11, wherein a sound reduction cavity is arranged in the box body 1, three sets of sound reduction cavities are arranged in the sound reduction cavity, the three sets of sound reduction cavities are respectively a first sound reduction cavity 12, a second sound reduction cavity 13 and a third sound reduction cavity 14 from left to right in sequence, a dust removal placing cavity 15 is arranged in the side wall of the box body 1, the dust removal filter screen 4 is arranged in the dust removal placing cavity 15, a drawer sliding groove is arranged on the side wall of the box body 1 and communicated with the dust removal placing cavity 15, the drawer box 5 is arranged in the drawer sliding groove, the drawer box 5 is positioned below the dust removal filter screen 4, the vibration motor 6 is arranged on the side wall of the box body 1, the vent hole 18 is communicated with the first sound reducing cavity 12, the air inlet pipe 2 is arranged on the side wall of the box body 1, the air inlet pipe 2 is communicated with the dust removing placing cavity 15, the sound absorbing cotton 7 is provided with two groups, the sound absorbing cotton 7 is respectively arranged on the top wall and the bottom wall of the sound reducing cavity, a shock absorbing cavity 16 is arranged in the bottom wall of the box body 1, the buffering shock absorbing device 11 is arranged in the shock absorbing cavity 16, the sound absorbing cap 8 is arranged in the middle of the first sound reducing cavity 12, a sound absorbing cavity with an opening on the side wall is arranged in the sound absorbing cap 8, a damping sound insulating pad 25 is arranged on the side wall of the sound absorbing cavity, two ends of the air permeable hose 9 are respectively arranged on two side walls of the second sound reducing cavity 13, two ends of the air permeable hose 9 are respectively communicated with the first sound reducing cavity 12 and the third sound reducing cavity 14, the side wall of the second sound reducing cavity 13 is provided with a honeycomb hole 17, the honeycomb hole 17 is communicated with the third sound reducing cavity 14, the air outlet pipe 3 is arranged on the side wall of the box body 1, the air outlet pipe 3 is communicated with a third sound-reducing cavity 14, the diversion silencing plate 10 is arranged in the third sound-reducing cavity 14, glass wool 19 is arranged on the diversion silencing plate 10, the diversion silencing plate 10 is arranged in a V-shaped structure, and two diversion silencing plates 10 are symmetrically arranged about the central axis of the third sound-reducing cavity 14; buffering damping device 11 includes shock attenuation sound insulation pad 20, buffer spring 21 and buffering support column 22, shock attenuation sound insulation pad 20 is located in shock attenuation chamber 16, buffering support column 22 is located in shock attenuation chamber 16, buffer spring 21 is located in shock attenuation chamber 16, buffering support column 22 is located in buffer spring 21.

Wherein, the inside wall of drawer box 5 is equipped with sealing washer 23, avoids gaseous 5 gaps from the drawer box to flow out. The breathable hoses 9 are provided with a plurality of groups, and the breathable hoses 9 are uniformly distributed. Buffering support column 22 is equipped with the multiunit, the multiunit buffering support column 22 is evenly distributed, buffer spring 21 corresponds the setting with buffering support column 22, shock attenuation sound-proof pad 20 is located between the multiunit buffering support column 22. The drawer box 5 is provided with a handle 24. The honeycomb holes 17 are provided with a plurality of groups, and the plurality of groups of honeycomb holes 17 are uniformly distributed.

When the box body is used, the box body 1 is fastened on the ground through bolts, airflow generated by the Roots blower enters the first sound reducing cavity 12 of the box body 1 from the air inlet pipe 2, because the air speed of the airflow generated by the Roots blower is high, the box body 1 can vibrate when the airflow impacts the dust removal filter screen 4, the vibration of the vibrating box body 1 is buffered and reduced under the matching of the buffer spring 21 and the shock absorption sound insulation pad 20, noise generated by the vibration of the box body 1 is avoided, the airflow is filtered and dedusted through the dust removal filter screen 4, the vibration generated by the airflow is buffered through the damping sound insulation pad 25 in the sound insulation cap 8, the noise generated by vibration is avoided, the damping sound insulation pad 25 primarily absorbs the noise, the noise is prevented from being transmitted to the side wall of the box body 1 through the sound insulation cap 8, the airflow enters the airflow from the original tangent plane to the S-shaped direction through the sound insulation cap 8, and the noise can be sufficiently absorbed by the sound absorption cotton 7 on the top wall and the bottom wall of the first sound reducing cavity 12, the airflow is guided by the air-permeable hose 9 and guided into the third sound-reducing chamber 14, the wind speed of the airflow is weakened in the first step under the action of the sound-reducing cap 8, the airflow is guided and circulated in the air-permeable hose 9, the air flow is combed, the excessive air flow is discharged to the periphery through the pipe wall of the ventilation hose 9 to the second sound reduction cavity 13, the air pressure of the air flow in the ventilation hose 9 is reduced, the air flow is slower, the air flow in the second sound reducing cavity 13 enters the third sound reducing cavity 14 through the honeycomb holes 17, the air flow guided by the air permeable hose 9 and the air flow entering through the honeycomb holes 17 are guided by the flow guide sound reducing plate 10 and discharged through the air outlet pipe 3, and the noise of the air flow guided by the air hose is eliminated again by the glass fiber cotton 19 contacting the flow guide sound reducing plate 10, so that the final air flow flowing out of the air outlet pipe 3 is gentle and the noise is extremely small. Need remove dust to dust removal filter screen 4 after using a period, start vibrating motor 6, thereby vibrating motor 6 makes the vibration of box 1 lateral wall make dust removal filter screen 4 vibrate, shakes off the dust on the filter screen 4 that removes dust and falls into in drawer box 5, pulls out drawer box 5 and handles the dust.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of making an uproar falls in roots blower which characterized in that: the dust-removing sound-absorbing box comprises a box body, an air inlet pipe, an air outlet pipe, a dust-removing filter screen, a drawer box, a vibrating motor, sound-absorbing cotton, a sound-absorbing cap, a ventilating hose, a flow-guiding sound-absorbing plate and a buffering and damping device, wherein sound-reducing cavities are arranged in the box body, three sets of sound-reducing cavities are arranged, the sound-reducing cavities are respectively a first sound-reducing cavity, a second sound-reducing cavity and a third sound-reducing cavity from left to right in sequence, a dust-removing placing cavity is arranged in the side wall of the box body, the dust-removing filter screen is arranged in the dust-removing placing cavity, a drawer sliding groove is arranged on the side wall of the box body and is communicated with the dust-removing placing cavity, the drawer box is slidably arranged in the drawer sliding groove, the drawer box body is positioned below the dust-removing filter screen, the vibrating motor is arranged on the side wall of the box body, the side wall of the dust-removing placing cavity is provided with an air vent hole, the air inlet pipe is communicated with the first sound-reducing cavity, the air inlet pipe is arranged on the side wall of the box body, the air inlet pipe is communicated with the dust removal placing cavity, the sound absorption cotton is provided with two groups, the two groups of sound absorption cotton are respectively arranged on the top wall and the bottom wall of the sound reduction cavity, the bottom wall of the box body is internally provided with a shock absorption cavity, the buffering shock absorption device is arranged in the shock absorption cavity, the silencing cap is arranged in the middle of the first sound reduction cavity, the silencing cap is internally provided with a silencing cavity with an opening on the side wall, the side wall of the silencing cavity is provided with a damping sound insulation pad, the two ends of the air hose are respectively arranged on the two side walls of the second sound reduction cavity, the two ends of the air hose are respectively communicated with the first sound reduction cavity and the third sound reduction cavity, the side wall of the second sound reduction cavity is provided with a honeycomb hole, the honeycomb hole is communicated with the third sound reduction cavity, the air outlet pipe is arranged on the side wall of the box body, the air outlet pipe is communicated with the third sound reduction cavity, the flow guide sound attenuation plate is arranged in the third sound reduction cavity, and the flow guide sound attenuation plate is provided with glass wool, the diversion muffling plates are arranged in a V-shaped structure, and two groups of diversion muffling plates are symmetrically arranged around the central axis of the third muffling cavity; buffering damping device includes shock attenuation sound-proof pad, buffer spring and buffering support column, shock attenuation sound-proof pad is located the shock attenuation intracavity, the shock attenuation intracavity is located to the buffering support column, buffer spring locates the shock attenuation intracavity, the buffering support column is located buffer spring.

2. The roots blower noise reduction device of claim 1, wherein: and a sealing ring is arranged on the inner side wall of the drawer box.

3. The roots blower noise reduction device of claim 1, wherein: the breathable flexible pipe is provided with a plurality of groups which are uniformly distributed.

4. The roots blower noise reduction device of claim 1, wherein: the buffering support column is equipped with the multiunit, the multiunit the buffering support column is evenly distributed, buffer spring corresponds the setting with the buffering support column, the shock attenuation gives sound insulation and fills up and is located between the multiunit buffering support column.

5. A roots blower noise reduction device as set forth in claim 2, wherein: the drawer box is provided with a handle.

6. The roots blower noise reduction device of claim 1, wherein: the honeycomb holes are provided with a plurality of groups which are uniformly distributed.