CN209704922U - Fan shell with simple structure - Google Patents

Abstract

The utility model relates to a simple structure's fan casing, including installation base and casing, the installation base sets up below the casing, installation base and casing be integrated into one piece, the bounding wall adopts multistage involute arc line to set up its inner wall, the casing includes bounding wall and ring flange, the ring flange welding is on the bounding wall, the ring flange is provided with the apron in front, all be provided with the mounting hole along the outward flange equidistance distribution of ring flange on apron and the ring flange, be provided with the sealing gasket between apron and the ring flange, apron, sealing gasket and ring flange pass through bolted connection and fix; the utility model adopts the flange plate to connect the shell and the cover plate, and the sealing gasket is arranged between the cover plate and the flange plate to improve the sealing property of the shell connection, thus having simple and compact structure; the structure of the cover plate is enhanced by arranging a reinforcing plate on the cover plate; simultaneously, the intermediate layer on the apron is provided with the amortization cotton, has reduced the noise of fan during operation.

Description

A fan housing with simple structure

technical field

The utility model relates to the technical field of fan equipment, in particular to a fan casing with a simple structure.

Background technique

Fans are mainly used in metallurgy, petrochemical, electric power, urban rail transit, textile, shipbuilding and other fields of national economy and ventilation in various places. In addition to traditional application fields, there will still be great development prospects in more than 20 potential market fields such as comprehensive utilization of coal gangue, technical transformation of new dry process clinker, energy saving in metallurgical industry, and comprehensive utilization of resources.

As the competition in the wind turbine manufacturing industry continues to intensify, mergers and acquisitions among large wind turbine manufacturing companies and capital operations are becoming more frequent, domestic excellent wind turbine manufacturing companies are paying more and more attention to the research of the industry market, especially the industrial development environment and product buyers. study in depth. Because of this, a large number of domestic excellent fan brands have risen rapidly and gradually become leaders in the fan manufacturing industry. However, the structure of the existing blower shell is generally complex, resulting in complicated manufacturing process, and it is relatively heavy, difficult to install, and the shell is weak in noise isolation.

Utility model content

The technical problem to be solved by the utility model is to provide a fan housing with a simple structure in view of the above-mentioned defects of the prior art.

The technical scheme that the utility model solves its technical problem adopts is:

Construct a fan housing with a simple structure, including a mounting base and a housing. The mounting base is set under the housing. The mounting base and the housing are integrally formed. The body includes a coaming plate and a flange plate, the flange plate is welded on the coaming plate, the front of the flange plate is provided with a cover plate, and both the cover plate and the flange plate are provided with mounting holes equidistantly distributed along the outer edge of the flange plate , A sealing gasket is arranged between the cover plate and the flange, and the cover plate, the sealing gasket and the flange are fixed by bolts.

Through holes are arranged on the installation base.

The center of the cover plate is provided with an air intake passage running through the front and rear surfaces of the cover plate, and the rear end of the air intake passage is fixed on the cover plate.

There is a concave arc surface with a smooth transition between the front surface of the cover plate and the outer surface of the air intake channel.

The front surface of the cover plate is provided with a plurality of reinforcement plates evenly distributed around its center, the reinforcement plates are vertically fixed on the cover plate, and one end of the reinforcement plate is fixed to the outer surface of the air intake channel.

The rear surface of the cover plate is provided with an interlayer, and the interlayer is filled with sound-absorbing cotton.

The beneficial effect of the utility model is that: the utility model adopts the flange plate to connect the shell and the cover plate, and a sealing gasket is arranged between the cover plate and the flange plate to improve the sealing performance of the shell connection, and the structure is simple and compact ; The structure of the cover plate is enhanced by setting a reinforcing plate on the cover plate; at the same time, the interlayer on the cover plate is provided with sound-absorbing cotton, which reduces the noise of the fan when it is working.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The accompanying drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort:

Fig. 1 is a structural schematic diagram of a fan casing with a simple structure provided by the utility model;

Fig. 2 is a partial structural schematic diagram of a fan casing with a simple structure provided by the utility model.

In the figure: 1-installation base; 11-through hole; 2-housing; 21-coaming plate; 22-flange; 3-cover plate; 31-installation hole;

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be made below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the implementation of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

As shown in Figure 1-Figure 2: construct a fan housing with a simple structure, including the installation base 1 and the housing 2, the installation base 1 is set under the housing 2, the installation base 1 and the housing 2 are integrally formed, The shell 2 includes a coaming plate 21 and a flange 22. The coaming plate 21 adopts multi-stage involute arcs to set its inner wall surface, which can reduce the flow loss caused by the expansion of the fluid in the shell and ensure the flow stability inside the volute. , reducing the noise caused by the outflow, the flange 22 is welded on the top of the enclosure 21, the front of the flange 22 is provided with a cover 3, the cover 3 and the flange 22 are both provided with a Mounting holes 31 equidistantly distributed in circular arcs on the edge are used to install bolts. A sealing gasket is arranged between the cover plate 3 and the flange 22. The sealing gasket improves the sealing performance of the housing 2. The cover plate 3 and the sealing gasket The pad and the flange 22 are fixed by bolting.

The mounting base 1 is provided with a through hole 11 .

The center of the cover plate 3 is provided with an air intake channel 32 penetrating through the front and rear surfaces of the cover plate 3 , and the rear end of the air intake channel 32 is fixed on the cover plate 3 .

A concave arc surface with a smooth transition is provided between the front surface of the cover plate 3 and the outer surface of the air intake passage 32 .

The front surface of the cover plate 3 is provided with a plurality of reinforcement plates 33 evenly distributed around its center, the reinforcement plates 33 are vertically fixed on the cover plate 3, and one end of the reinforcement plate 33 is fixedly connected with the outer surface of the air intake channel 32, and the reinforcement plate 33 has strengthened the structure of cover plate 3 mostly.

The back surface of the cover plate 3 is provided with an interlayer, and the interlayer is filled with sound-absorbing cotton. The sound-absorbing cotton has a multi-fiber structure. When sound waves pass through the cotton, they are reflected, superimposed and collided with countless fibers, so that the sound wave energy is converted into heat energy, making the sound wave intensity weakened, so the sound-absorbing cotton greatly reduces the noise generated by the fan.

The working principle of the utility model: the utility model adopts the flange plate 22 to connect the shell 2 and the cover plate 3, and a sealing gasket is set between the cover plate 3 and the flange plate 22 to improve the sealing performance of the shell 2 connection, The structure is simple and the overall structure is compact; the structure of the cover plate 3 is strengthened by setting a reinforcing plate 33 on the cover plate 3; at the same time, the interlayer on the cover plate 3 is provided with sound-absorbing cotton, which reduces the noise of the fan when it is working.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (5)

1. A fan housing with a simple structure, characterized in that it includes a mounting base and a housing, the mounting base is arranged under the housing, the mounting base and the housing are integrally formed, and the housing The body includes a coaming plate and a flange plate. The coaming plate adopts multi-stage involute arcs to set its inner wall surface. The flange plate is welded on the coaming plate, and a cover plate is arranged in front of the flange plate. Both the cover plate and the flange are provided with installation holes equidistantly distributed along the outer edge of the flange, and a sealing gasket is arranged between the cover plate and the flange, and the cover plate, the sealing liner Pads and flanges are secured by bolted connections. 2. The fan housing according to claim 1, wherein a through hole is provided on the mounting base. 3. The fan casing according to claim 2, characterized in that, the center of the cover plate is provided with an air intake passage penetrating through the front and rear surfaces of the cover plate, and the rear end of the air intake passage is fixed on the cover board. 4 . The fan housing according to claim 3 , wherein there is a concave arc surface with a smooth transition between the front surface of the cover plate and the outer surface of the air intake passage. 4 . 5. The fan casing according to claim 4, wherein the front surface of the cover plate is provided with a plurality of reinforcement plates uniformly distributed around its center, and the reinforcement plates are vertically fixed to the cover plate Above, one end of the reinforcing plate is fixed to the outer surface of the air intake channel.