CN218862854U

CN218862854U - Roots's fan air-out structure

Info

Publication number: CN218862854U
Application number: CN202223230544.6U
Authority: CN
Inventors: 刘刚
Original assignee: Nantong Petrochemical Machinery Manufacturing Co ltd
Current assignee: Nantong Petrochemical Machinery Manufacturing Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-04-14
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a roots's fan air-out structure, including the fan shell, one side of fan shell is equipped with the bucket form air outlet, the inside of bucket form air outlet is equipped with at least two sets of acoustical panel, and two sets of set up side by side about the acoustical panel, every group is single the acoustical panel sets up side by side from top to bottom, and is two sets of the number of acoustical panel increases gradually, adjacent two along the direction that the fan shell was kept away from gradually to the bucket form the wind channel between the acoustical panel. The utility model discloses in, the number of every group acoustical panel is increased gradually along the direction that fan shell was kept away from gradually to the bucket form air outlet, and when the exhalant gas stream entered into the first group acoustical panel in left side, can carry out preliminary amortization, and the air current of preliminary amortization is through the acoustical panel of second group again, and the acoustical panel of second group can fall into thinner air current with the air current of preliminary amortization once more to further amortization, then can get into the acoustical panel of right side third group, and noise cancelling effect is better, and spare part is few, facilitates the use.

Description

Roots's fan air-out structure

Technical Field

The utility model relates to a roots's fan technical field specifically is a roots's fan air-out structure.

Background

The Roots blower is a positive displacement blower, the end face of the impeller, front and back end covers of the blower, the principle is to utilize two blade-shaped rotors to make relative motion in the cylinder to compress and transport the rotary compressor of the gas, this blower is simple in construction, it is convenient to make, apply to oxygenation of aquaculture, sewage treatment aeration, cement transport extensively, is more suitable for the gas transport and pressurization system of the low pressure occasion, can also be used as the vacuum pump, etc..

The patent with the application number of CN202022188069.5 provides a Roots blower shell air outlet air duct structure, which is matched with an acoustic board, a honeycomb flow guiding plate and an acoustic elimination sheet, noise can be conveniently transmitted through the inclined honeycomb flow guiding plate, the using effect of the device is improved, noise generated in the transmission process of a blower is absorbed through the acoustic board, the noise is secondarily eliminated through the acoustic elimination sheet, the noise is reduced to the maximum extent, the phenomena that the pipeline and the device vibrate due to overlarge noise, parts of the device are abraded and the interference and the injury to workers due to the noise are effectively avoided; but the structure is complicated, the needed parts are more, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a roots's fan air-out structure to it is numerous and diverse to solve air-out pipeline structure among the prior art, and the spare part that needs is more, awkward problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a roots's fan air-out structure, includes the fan shell, one side of fan shell is equipped with the bucket form air outlet, the inside of bucket form air outlet is equipped with at least two sets of acoustical panel, and two sets of the acoustical panel is controlled and is set up side by side, and every group is single the acoustical panel sets up side by side from top to bottom, and is two sets of the number of acoustical panel increases gradually along the direction that the fan shell was kept away from gradually to the bucket form air duct between the acoustical panel adjacent two.

Preferably, a spring is installed between the two sound-absorbing plates which are adjacent up and down, and the upper end and the lower end of the spring are fixedly connected with the hopper-shaped air outlet through spring seats.

Preferably, suspenders are mounted on the uppermost and lowermost acoustic panels on the sides close to the inner wall of the bucket-shaped air outlet, and rubber pads are fixedly connected between the suspenders and the inner wall of the bucket-shaped air outlet.

Preferably, one end of the sound-absorbing plate close to the fan shell is a streamline tip portion.

Preferably, the outer surface of the bucket-shaped air outlet is provided with a silencing outer sleeve.

Preferably, the fan further comprises a rotor arranged inside the fan housing and an air inlet located on one side of the fan housing, which is far away from the bucket-shaped air outlet.

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

1. the utility model discloses in, the number of each group acoustical panel increases along the direction that the fan shell was kept away from gradually to the hopper-shaped air outlet, when the exhaust air current entered the first group acoustical panel in left side, can carry out preliminary amortization, the air current of preliminary amortization passes through the second group acoustical panel again, the second group acoustical panel can divide into the air current of preliminary amortization into thinner air current again, in order to further amortization, then can enter the third group acoustical panel in right side, carry out the amortization, thus the noise cancelling effect is better, and spare part is few, facilitate the use;

2. the utility model is provided with the spring, when the air flow passes through the air duct, the silencing plate can vibrate, and the spring can absorb the vibration to reduce noise;

3. the utility model discloses establish the one end that is close to fan casing with the acoustical panel and into streamlined sharp portion to reduce the impact that the air current produced to the acoustical panel when getting into the wind channel, improve acoustical panel positional stability.

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 structural view of the present invention;

fig. 2 is a schematic structural diagram of a group of sound-absorbing boards of the present invention;

fig. 3 is a schematic structural diagram of the sound-absorbing plate of the present invention.

In the figure: 1. an air inlet; 2. a rotor; 3. a fan housing; 4. a bucket-shaped air outlet; 5. a sound-absorbing panel; 51. a streamlined nose portion; 6. a boom; 7. a spring; 8. a spring seat; 9. an air duct; 10. a noise reduction jacket; 11. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1, in an embodiment of the present invention, an air outlet structure of a roots blower includes a blower housing 3, a bucket-shaped air outlet 4 is disposed at one side of the blower housing 3, a rotor 2 installed inside the blower housing 3, and an air inlet 1 located at one side of the blower housing 3 away from the bucket-shaped air outlet 4, when the rotor 2 rotates, air can enter through the air inlet 1, and an air flow can reach the bucket-shaped air outlet 4 again to be discharged;

as shown in fig. 1 and fig. 2, at least two groups of muffling plates 5 (three groups are shown) are arranged inside the hopper-shaped air outlet 4, the two groups of muffling plates 5 are arranged side by side left and right, each group of single muffling plates 5 are arranged side by side up and down, the number of the two groups of muffling plates 5 is gradually increased along the direction of the hopper-shaped air outlet 4 away from the fan housing 3, an air channel 9 is formed between the two adjacent muffling plates 5, when discharged air flow enters the first group of muffling plates 5 on the left side, preliminary muffling can be performed, the air flow subjected to preliminary muffling passes through the second group of muffling plates 5, the second group of muffling plates 5 can divide the air flow subjected to preliminary muffling into finer air flows again to further muffling, and then can enter the third group of muffling plates 5 on the right side to perform muffling, so that the muffling effect is better;

with reference to fig. 1 and 2, a boom 6 is mounted on each of the uppermost and lowermost acoustic panels 5 on a side close to the inner wall of the hopper-shaped air outlet 4, a rubber pad 11 is fixedly connected between the boom 6 and the inner wall of the hopper-shaped air outlet 4, and the rubber pad 11 can reduce the vibration between the acoustic panel 5 and the hopper-shaped air outlet 4, a spring 7 is mounted between two adjacent acoustic panels 5, the upper and lower ends of the spring 7 are fixedly connected with the hopper-shaped air outlet 4 through a spring seat 8, the spring 7 can absorb the vibration from the acoustic panel 5, that is, when the air flow passes through the air duct 9, the acoustic panel 5 can generate vibration, and the spring 7 can absorb the vibration to reduce noise;

as shown in fig. 2 and 3, preferably, a streamlined tip 51 is provided at one end of the sound-absorbing plate 5 close to the fan casing 3, so as to reduce the impact on the sound-absorbing plate 5 when the air flow enters the air duct 9 and improve the position stability of the sound-absorbing plate 5;

moreover, the outer surface of the bucket-shaped air outlet 4 is provided with a silencing outer sleeve 10, so that noise is further reduced.

The utility model discloses a theory of operation and use flow: when using this device, when rotor 2 rotates, accessible air intake 1 air inlet, the air current can reach hopper-shaped air outlet 4 again, the number of acoustical panel 5 is gradually increased along the direction that fan shell 3 was kept away from gradually to hopper-shaped air outlet 4, form wind channel 9 between two adjacent acoustical panels 5, the combustion gas stream enters into when the first group acoustical panel 5 in left side, can carry out preliminary amortization, the air current process second group acoustical panel 5 with preliminary amortization again, second group acoustical panel 5 can divide into finer air current with the air current of preliminary amortization once more, with further amortization, then can get into right side third group acoustical panel 5, carry out the amortization, sound deadening effect is better like this, the air current is when wind channel 9, acoustical panel 5 can produce vibrations, spring 7 can absorb this vibrations, with making an uproar.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a roots's fan air-out structure, includes fan shell (3), its characterized in that: one side of fan casing (3) is equipped with bucket form air outlet (4), the inside of bucket form air outlet (4) is equipped with at least two sets of acoustical panel (5), and two sets of set up side by side about acoustical panel (5), and every group is single acoustical panel (5) set up side by side from top to bottom, and are two sets of the number of acoustical panel (5) is increased gradually along the direction that fan casing (3) were kept away from gradually in bucket form air outlet (4), adjacent two form wind channel (9) between acoustical panel (5).

2. The roots blower air outlet structure according to claim 1, wherein: and a spring (7) is arranged between the two sound-absorbing plates (5) which are vertically adjacent, and the upper end and the lower end of the spring (7) are fixedly connected with the hopper-shaped air outlet (4) through a spring seat (8).

3. The Roots blower air outlet structure according to claim 1, wherein: the uppermost and the lowermost silencing plates (5) are provided with hanging rods (6) on one sides close to the inner walls of the bucket-shaped air outlets (4), and rubber pads (11) are fixedly connected between the hanging rods (6) and the inner walls of the bucket-shaped air outlets (4).

4. The Roots blower air outlet structure according to claim 1, wherein: one end of the sound-absorbing plate (5) close to the fan shell (3) is provided with a streamline tip part (51).

5. The roots blower air outlet structure according to claim 1, wherein: the outer surface of the bucket-shaped air outlet (4) is provided with a silencing outer sleeve (10).

6. The roots blower air outlet structure according to claim 1, wherein: the fan is characterized by further comprising a rotor (2) arranged inside the fan shell (3) and an air inlet (1) located on one side, far away from the bucket-shaped air outlet (4), of the fan shell (3).