CN214464974U

CN214464974U - Axial flow fan with split type shell and combined multiple noise elimination mechanisms

Info

Publication number: CN214464974U
Application number: CN202022838515.2U
Authority: CN
Inventors: 谢星明; 张果辉; 刘刚; 梁艳斌; 王海桥; 娄炳炎
Original assignee: Ping An Electric Co Ltd
Current assignee: Ping An Electric Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-10-22
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses an axial fan of multiple noise elimination mechanism combination with subdivision formula shell, including the host computer noise elimination casing, be equipped with the terminal box part on the host computer noise elimination casing, be equipped with the motor part of being connected with the impeller in the host computer noise elimination casing, the noise elimination inner tube both ends and two flange fixed connection of host computer noise elimination casing, the space in the circumference outside of two flange inboards and noise elimination inner tube forms the packing space of the noise elimination body, the packing space is laid the noise elimination body supporting layer from inside to outside in proper order, the cotton layer of hole class noise elimination, micropore board noise elimination layer, foamer noise elimination layer, the sound insulation layer outside is equipped with the subdivision formula shell, multiple noise elimination material and the coaxial suit of subdivision formula shell. The utility model discloses a multiple noise elimination material and structure realize that noise elimination, sound absorption, sound insulation combine together, have prevented effectively that the noise from outwards propagating along the casing, and different materials and different structures all have an effect to the different frequency noise that the host computer produced moreover to make the general greatly reduced of noise of axial fan host computer side.

Description

Axial flow fan with split type shell and combined multiple noise elimination mechanisms

Technical Field

The utility model relates to an axial fan field, in particular to axial fan of multiple noise elimination mechanism combination with subdivision formula shell.

Background

The axial flow fan is a ventilating device which is widely applied to industrial and mining enterprises and converts mechanical energy into fluid energy. Axial flow fans used under mines need large full pressure due to long air supply distance, and generally adopt axial flow fans of a two-stage disrotatory structure or a multi-stage structure, so that noise generated in the operation process is large. Because the fans are all installed in narrow and long roadways, noise cannot be diffused to the periphery but is spread along the roadways in a long distance, and the noise brings serious influence on the health of production workers.

In order to reduce noise, the inlet and the outlet of the fan are provided with the silencers, and the fan body is provided with a simpler silencing structure. The fan main machine is a noise source, and has various types such as airflow noise, mechanical noise, electromagnetic noise and the like, and the frequency spectrum characteristics of the noise are different. The single structure and the single noise elimination material are not obvious for reducing noise of the main engine. If various noise elimination materials are adopted, the shell structure of the main machine is inconvenient to install. Thus, although the noise at the front and rear mufflers is greatly reduced, the noise on the fan main unit side is mostly above 90 db.

In recent years, most mine users have higher requirements on the noise of the fan under the mine. The noise of the whole machine is required to be lower than 80 decibels, and the efficiency is required to be further improved.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a simple structure, safe and reliable's axial fan that multiple noise elimination mechanism that has the subdivision formula shell makes up.

The utility model provides a technical scheme of above-mentioned problem is: the utility model provides an axial fan that multiple noise elimination mechanism is combined with subdivision formula shell, includes host computer noise elimination casing, motor part, terminal box part, impeller, be equipped with the terminal box part on the host computer noise elimination casing, be equipped with the motor part in the host computer noise elimination casing, the motor part is connected with the impeller.

The main engine noise elimination shell comprises a noise elimination inner cylinder, two ends of the noise elimination inner cylinder are fixedly connected with two flanges, the space between the inner sides of the two flanges and the space outside the circumference of the noise elimination inner cylinder form a filling space of a noise elimination body, a noise elimination body supporting layer, a pore noise elimination cotton layer, a micropore plate noise elimination layer, a foaming agent noise elimination layer and a sound insulation layer are sequentially laid in the filling space from inside to outside along the circumferential direction, and the split shell is arranged outside the sound insulation layer.

The split type shell is a detachable structure formed by connecting two split bodies, wherein the cylinder body is split into two halves along the diameter, flat steel straight flanges are welded on split surfaces of the two split bodies, and the two split bodies are connected through holes in the flat steel straight flanges and bolt assemblies.

The sound insulation layer, the foaming agent sound attenuation layer and the split type shell are of a detachable integral structure, the sound insulation layer is laid on the inner side of the split type shell, and the foaming agent is filled in the space between the sound insulation layer and the microporous plate sound attenuation layer to form the foaming agent sound attenuation layer.

The axial flow fan with the split type shell and combined multiple noise elimination mechanisms is characterized in that a motor shell is arranged in the noise elimination inner cylinder and fixedly connected with the noise elimination inner cylinder through a plurality of supporting webs, motor components are located in the motor shell, a combined type junction box seat is arranged on the upper half split section of the split type shell, and the combined type junction box seat is connected with the motor shell through a wire outlet pipe.

The axial flow fan with the split type shell and combined by multiple noise elimination mechanisms is characterized in that the noise elimination inner cylinder is of a punched plate or hollow plate structure.

In the axial flow fan with the split-type shell and combined by multiple noise elimination mechanisms, the material of the noise eliminator supporting layer is glass fiber cloth or a steel wire mesh.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a subdivision formula shell structure, the filling of noise elimination material on the host computer noise elimination casing is more convenient, uses when for multiple noise elimination material and provides the feasibility.

2. The utility model discloses a materials such as noise elimination, sound absorption, sound insulation make up into multiple noise-abatement structure to coaxial suit replaces traditional single noise-abatement material and noise-abatement structure, has prevented effectively that the noise from outwards propagating along the casing, and in addition, different materials and different structures all have the effect to the different frequency noise that the host computer produced. Therefore, by adopting the novel noise elimination material, the noise elimination structure is optimized, multiple noise elimination mechanisms are combined, and an integrated structure is formed under the condition of multiple pipes, so that the noise on the host side is reduced to about 75 decibels.

Drawings

Fig. 1 is a schematic front sectional view of the present invention.

Fig. 2 is a schematic cross-sectional view at a-a of fig. 1.

Fig. 3 is a sectional structure schematic diagram of the main engine noise elimination shell.

Fig. 4 is a schematic cross-sectional view at B-B of fig. 3.

Fig. 5 is a schematic top view of the profile structure of fig. 4.

Fig. 6 is an enlarged view of the structure of fig. 3 at "i".

Fig. 7 is an enlarged schematic view of the structure of fig. 4 at "ii".

Fig. 8 is a simplified structural schematic diagram of the main engine muffler housing.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-2, an axial flow fan with a split housing and a combination of multiple noise elimination mechanisms includes a main engine noise elimination housing 301, a motor component 302, a junction box component 303, and an impeller 304, where the main engine noise elimination housing 301 is provided with the junction box component 303, the main engine noise elimination housing 301 is provided with the motor component 302 therein, and the motor component 302 is connected with the impeller 304.

As shown in fig. 3-7, the main engine noise elimination casing 301 includes a noise elimination inner cylinder 30106, two ends of the noise elimination inner cylinder 30106 are fixedly connected to two flanges 30101, a space inside the two flanges 30101 and outside the circumference of the noise elimination inner cylinder 30106 form a filling space of a noise elimination body, a noise elimination body supporting layer 30107, a pore noise elimination cotton layer 30108, a micropore plate noise elimination layer 30109, a foaming agent noise elimination layer 30110, and a noise isolation layer 30111 are sequentially laid in the filling space from inside to outside along the circumferential direction, and a split-type housing 30112 is arranged outside the noise isolation layer 30111.

The split-type housing 30112 is a detachable structure formed by splitting a cylinder into two halves along the diameter and connecting two split bodies, flat steel straight flanges are welded on the split surfaces of the two split bodies, and the two split bodies are connected through holes on the flat steel straight flanges 30101 and bolt assemblies.

The sound insulation layer 30111, the foaming agent noise elimination layer 30110 and the split type shell 30112 are of a detachable integral structure, the sound insulation layer 30111 is laid on the inner side of the split type shell 30112, and a foaming agent is filled in a space between the sound insulation layer 30111 and the micropore plate noise elimination layer 30109 to form the foaming agent noise elimination layer 30110.

A motor shell 30105 is arranged in the noise elimination inner cylinder 30106, the motor shell 30105 is fixedly connected with the noise elimination inner cylinder 30106 through a plurality of supporting webs 30114, the motor component 302 is arranged in the motor shell 30105, a combined terminal box seat 30103 and a lifting lug 30102 are arranged on the upper half-section of the split type shell 30112, the combined terminal box seat 30103 is connected with the motor shell 30105 through a wire outlet pipe 30104, and a support foot 30113 is arranged at the bottom of the lower half-section of the split type shell 30112.

The silencing inner cylinder 30106 is of a punched plate or hollowed-out plate structure. The material of the sound attenuation body supporting layer 30107 is glass fiber cloth or steel wire mesh. The porous silencing cotton layer 30108 can be made of any one of superfine glass fiber, flame-retardant polyester fiber, carbon fiber, flame-retardant sponge and the like. The micropore plate noise elimination layer 30109 is formed by punching a thin steel plate with the thickness of less than 1mm, and the sound insulation layer 30111 is made of a composite material with the thickness of 1-5mm and taking flame-retardant rubber as a base material.

Fig. 8 the utility model discloses a host computer noise elimination casing 301301 adopts the forward cross-sectional schematic diagram of simplified structure. According to different requirements, the structure mode that only the pore silencing cotton layer 30108 and the sound insulation layer 30111 are combined can be simplified. The four silencing modes can be combined in other modes. The filling of the silencing material is simplified, and the shell can adopt an integral structure without splitting.

The utility model discloses a multiple different noise elimination mechanism, the noise elimination material of multiple different noise elimination effect and function makes up through coaxial suit structure and uses, adopts subdivision formula shell 30112 to carry out the cladding. Therefore, the composite noise elimination mechanism, the composite noise elimination structure and the combination of multiple noise elimination materials replace the traditional single noise elimination material and noise elimination structure, and noise elimination, sound absorption and sound insulation are all performed, so that the noise is effectively prevented from being transmitted outwards along the shell.

Claims

1. The utility model provides an axial fan that multiple noise elimination mechanism is combined with subdivision formula shell which characterized in that: the motor comprises a main engine noise elimination shell, a motor part, a junction box part and an impeller, wherein the junction box part is arranged on the main engine noise elimination shell, the motor part is arranged in the main engine noise elimination shell, and the motor part is connected with the impeller; the host machine silencing shell comprises a silencing inner cylinder, two ends of the silencing inner cylinder are fixedly connected with two flanges, the inner sides of the two flanges and the space on the outer side of the circumference of the silencing inner cylinder form a filling space of a silencing body, a silencing body supporting layer, a pore silencing cotton layer, a micropore plate silencing layer, a foaming agent silencing layer and a sound insulation layer are sequentially laid in the filling space from inside to outside along the circumferential direction, and a split shell is arranged on the outer side of the sound insulation layer.

2. The axial flow fan with a combination of multiple noise attenuation mechanisms of a split housing of claim 1, wherein: the split type shell is a detachable structure formed by splitting a cylinder into two halves along the diameter and connecting two split bodies, flat steel straight flanges are welded on split surfaces of the two split bodies, and the two split bodies are connected through holes in the flat steel straight flanges and bolt assemblies.

3. The axial flow fan with a combination of multiple noise attenuation mechanisms of a split housing of claim 1, wherein: the sound insulation layer, the foaming agent silencing layer and the split type shell are of a detachable integral structure, the sound insulation layer is laid on the inner side of the split type shell, and the foaming agent is filled in the space between the sound insulation layer and the microporous plate silencing layer to form the foaming agent silencing layer.

4. The axial flow fan with a combination of multiple noise attenuation mechanisms of a split housing of claim 1, wherein: the noise elimination inner cylinder is internally provided with a motor shell, the motor shell is fixedly connected with the noise elimination inner cylinder through a plurality of supporting webs, motor parts are positioned in the motor shell, the upper half section of the split type shell is provided with a combined type junction box seat, and the combined type junction box seat is connected with the motor shell through a wire outlet pipe.

5. The axial flow fan with a combination of multiple noise attenuation mechanisms of a split housing of claim 1, wherein: the silencing inner cylinder is of a punched plate or hollow plate structure.

6. The axial flow fan with a combination of multiple noise attenuation mechanisms of a split housing of claim 1, wherein: the material of the sound-deadening body supporting layer adopts glass fiber cloth or a steel wire mesh.