CN216157900U

CN216157900U - Roots blower silencing device

Info

Publication number: CN216157900U
Application number: CN202122229612.6U
Authority: CN
Inventors: 杨周; 万希立; 普文杰; 谭伟; 杨建荣
Original assignee: Yunnan Chengfeng Non Ferrous Metals Co ltd
Current assignee: Yunnan Chengfeng Non Ferrous Metals Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-01
Anticipated expiration: 2031-09-15

Abstract

The utility model provides a Roots blower silencing device, which comprises a shell and is characterized in that: the casing makes for hollow structure's screwed pipe, and the casing bottom is provided with curved air inlet, and the casing top is provided with the arc air outlet, and casing internal center puts and is provided with the inner tube, and the inner tube surface is provided with a plurality of annular through-holes, carries out the amortization to the roots fan, and noise cancelling effect is good.

Description

Roots blower silencing device

Technical Field

The utility model relates to the field of smelting equipment, in particular to a Roots blower silencing device.

Background

Roots's fan has important effect at tin smelting in-process, and roots's fan's silencing device can not only improve operational environment, but also can the noise reduction, for example patent number: 201921221877.8 discloses a silencing device for Roots blower, which comprises a telescopic tube, wherein the left and right ends of the telescopic tube are symmetrically provided with lantern rings, the lantern ring is internally and fixedly provided with an air bag ring, the surface of the lantern ring is fixedly provided with a connecting tube communicated with the air bag ring, the other end of the connecting tube is fixedly provided with an air bag, the upper and lower sides of the lantern ring are symmetrically fixed with a liquid passing tube, a conduit is communicated between the liquid passing tube and the telescopic tube, the side wall of the liquid passing tube is provided with a through hole communicated with the conduit, the outer end of the liquid passing tube is provided with an end cover, and the middle part of the end cover is provided with a slide bar. The Roots blower is simple in structure and reasonable in design, and the air inlet pipe and the air outlet pipe are wrapped by water in a mode of introducing water to the surfaces of the air inlet pipe and the air outlet pipe of the Roots blower, so that noise reduction is realized conveniently, the noise reduction effect of the Roots blower is improved, the Roots blower meets social requirements, and the Roots blower is worth popularizing in the field of the Roots blower.

The device has a complex structure and poor noise reduction effect.

Disclosure of Invention

The utility model aims to provide a Roots blower silencing device which is used for silencing a Roots blower by using a small-hole silencing principle and has a good silencing effect.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a roots's fan silencing device, includes the casing, its characterized in that: the casing is hollow structure's screwed pipe and makes, and the casing bottom is provided with curved air inlet, and the casing top is provided with the arc air outlet, and casing internal center puts and is provided with the inner tube, and the inner tube surface is provided with a plurality of annular through-holes.

As a further improvement of the utility model, the diameter of the through hole is 14mm, and the inner diameter of the shell is 425 mm.

As a further improvement of the utility model, the inner surface of the shell is provided with silencing cotton, and the silencing cotton is internally provided with a rubber layer.

As a further improvement of the utility model, a middle cylinder is arranged in the middle of the inner part of the shell, a plurality of conical exhaust ports are arranged in the middle cylinder, and the inner sides of the exhaust ports are fixed outside the through hole of the inner cylinder.

Has the advantages that:

the Roots blower solves the problem of high noise of the Roots blower in the prior art, reduces the noise of the Roots blower by utilizing the mutual matching of the shell and the inner cylinder, effectively improves the operating environment and reduces the noise decibel.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The utility model is further illustrated with reference to fig. 1.

The utility model provides a roots's fan silencing device, includes casing 2, its characterized in that: casing 2 makes for hollow structure's screwed pipe, and 2 bottoms of casing are provided with curved air inlet 8, and 2 tops of casing are provided with arc air outlet 1, and 2 inside central points of casing put and are provided with inner tube 7, and 7 surfaces of inner tube are provided with a plurality of annular through-holes 9, utilize mutually supporting between inner tube 7 and the casing 2, effectually carry out the amortization to the roots fan.

Furthermore, the diameter of the through hole 9 is 14mm, the inner diameter of the shell 2 is 425mm, and the small diameter of the through hole 9 is used for discharging inlet air, so that the noise is effectively reduced.

Further, 2 internal surfaces of casing are provided with amortization cotton 4, and amortization cotton 4 is inside to be provided with rubber layer 3, and the buffering not only effectual noise reduction with the design of attracting the material, but also can effectual reduction vibration.

Furthermore, a middle cylinder 5 is arranged in the middle of the inside of the shell 2, a plurality of conical exhaust ports 6 are arranged in the middle cylinder 5, the inner sides of the exhaust ports 6 are fixed outside the through holes 9 of the inner cylinder 7, and the two layers of cylindrical structures are utilized for noise reduction, so that the noise reduction effect is more obvious, and the noise of 8-10 decibels can be effectively reduced.

Claims

1. The utility model provides a roots's fan silencing device, includes casing (2), its characterized in that: casing (2) are hollow structure's screwed pipe and make, and casing (2) bottom is provided with curved air inlet (8), and casing (2) top is provided with arc air outlet (1), and casing (2) inside central point puts and is provided with inner tube (7), and inner tube (7) surface is provided with a plurality of annular through-holes (9).

2. A roots blower silencer according to claim 1 in which the through hole (9) is 14mm in diameter and the housing (2) has an internal diameter of 425 mm.

3. The silencing device for the Roots blower according to claim 1, wherein the silencing cotton (4) is arranged on the inner surface of the shell (2), and the rubber layer (3) is arranged inside the silencing cotton (4).

4. The silencing device for the Roots blower according to claim 1, wherein an intermediate cylinder (5) is arranged in the middle of the inside of the shell (2), a plurality of conical exhaust ports (6) are arranged in the intermediate cylinder (5), and the inner sides of the exhaust ports (6) are fixed outside the through holes (9) of the inner cylinder (7).