CN217270940U

CN217270940U - Large-scale draught fan for aluminum plant

Info

Publication number: CN217270940U
Application number: CN202221075179.3U
Authority: CN
Inventors: 张海; 王思静; 黄祥尧
Original assignee: Qianjiang Zhengsheng Luxury Aluminum Power Co ltd
Current assignee: Qianjiang Zhengsheng Luxury Aluminum Power Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-23
Anticipated expiration: 2032-05-06

Abstract

A large induced draft fan for an aluminum plant comprises an induced draft assembly and a rotating shaft, wherein the rotating shaft is installed on a base through a first bearing and a second bearing, a shell is arranged on the outer side of the induced draft assembly in a matching mode, and the induced draft assembly comprises a front annular plate, a rear annular plate and a plurality of fan blades which are arranged between the front annular plate and the rear annular plate in a coaxial mode and are arranged in an annular and equidistant mode; set on the pivot between first bearing and the second bearing and have the same with induced air subassembly structure but the less first cooling module of size and second cooling module, when the pivot was rotatory, first cooling module and second cooling module cooled first bearing and second bearing respectively. This draught fan has all set special air-cooled subassembly for every bearing of main pivot, has imitated the defect that the loss that leads to because of the bearing excessively generates heat is fast, life is short, this draught fan modern design is reasonable, and there is not interference between its a plurality of air-cooled subassemblies.

Description

Large-scale draught fan for aluminum plant

Technical Field

The utility model relates to a large-scale draught fan is used in aluminium factory belongs to large-scale draught fan technical field.

Background

Because a large amount of electricity is needed for the electrolysis of aluminum in an aluminum plant, the aluminum plant is generally provided with a thermal power plant, and the thermal power plant generally heats water into steam in a coal-burning mode and then drives a generator to generate electricity by using the steam. Thermal power is because need burn a large amount of coals, and its dust removal demand is great, has all set large-scale draught fan usually, and current large-scale draught fan exists the axle and bears the weight of significantly, and operating time is long, and the bearing generates heat obviously, the fast defect of loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned defect of prior art, provide a large-scale draught fan to aluminum plant usefulness, this draught fan has all set special forced air cooling subassembly for every bearing of main pivot, has imitated the defect that the loss that leads to because of the bearing excessively generates heat is fast, life is short, this draught fan novel in design is reasonable, and no interference has outstanding practicality between its a plurality of forced air cooling subassemblies.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a large induced draft fan for an aluminum plant comprises an induced draft assembly and a rotating shaft, wherein the rotating shaft is installed on a base through a first bearing and a second bearing, a shell is arranged on the outer side of the induced draft assembly in a matching mode, and the induced draft assembly comprises a front annular plate, a rear annular plate and a plurality of fan blades which are arranged between the front annular plate and the rear annular plate in a coaxial mode and are arranged in an annular and equidistant mode; set on the pivot between first bearing and the second bearing and have the same with induced air subassembly structure but the less first cooling module of size and second cooling module, when the pivot was rotatory, first cooling module and second cooling module cooled first bearing and second bearing respectively.

Through adopting above-mentioned technical scheme, a large-scale draught fan is used in aluminium factory is provided, and this draught fan has all set special air-cooled subassembly for every bearing of main pivot, has imitated the defect that the loss that leads to because of the bearing excessively generates heat is fast, life is short, and this draught fan novel in design is reasonable, and there is not interference between its a plurality of air-cooled subassemblies.

The utility model discloses a further set up to: the outer side covers of the first cooling assembly and the second cooling assembly are provided with mesh covers.

Through adopting above-mentioned technical scheme, set up the screen panel that can clear away impurity, can effectively guarantee two cooling module's normal operating, guarantee the cooling ability.

The utility model discloses a further set up to: the screen panel is arc or U-shaped otter board, the lock in the outside of first cooling module and second cooling module, and the axis of screen panel is parallel with the pivot.

Through adopting above-mentioned technical scheme, a simple structure is provided, the screen panel that the function is practical, and this screen panel not only has the good function that blocks impurity, still has that cooling gas flows smoothly, is convenient for maintain cooling module's function.

The utility model discloses a further set up to: the base is composed of a counterweight part above and a supporting frame below.

Through adopting above-mentioned technical scheme, set up a reasonable base, the counter weight portion above that can effectively increase weight guarantees the stability of draught fan during operation, and the support frame of its below then has the function of being convenient for adjust the base height.

The utility model discloses a further set up to: and lifting rings are arranged at the tops of the first bearing and the second bearing.

Through adopting above-mentioned technical scheme, set up rings at the top of first bearing and second bearing, made things convenient for people to remove the draught fan.

The utility model discloses a further set up to: and the rear end of the rotating shaft is provided with a coupling connected with the motor.

Through adopting above-mentioned technical scheme, a concrete connection mode of pivot and motor output shaft is provided.

The utility model discloses main beneficial effect is:

1. the novel draught fan is characterized in that each bearing of the main rotating shaft is provided with a special air cooling assembly, the defects of high loss and short service life caused by excessive heating of the bearing are effectively overcome, the design of the draught fan is novel and reasonable, and a plurality of air cooling assemblies are not interfered;

2. this novel draught fan covers in first cooling module and second cooling module's the outside and is equipped with arc or U-shaped screen panel, and the axis of screen panel is parallel with the pivot, and screen panel simple structure, function practicality not only have the good function that blocks impurity, still have that cooling gas flows smoothly, are convenient for maintain cooling module's function.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

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

In the figure, 1, an induced draft assembly; 11. a front ring plate; 12. a fan blade; 13. a rear circular plate; 2. a first bearing; 3. a first cooling assembly; 4. a second cooling assembly; 5. a second bearing; 6. a rotating shaft; 7. a coupling; 8. a mesh enclosure; 9. a base; 91. a counterweight portion; 92. a support frame.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 (the arrow in the figure indicates the flow direction of air), a large-scale induced draft fan for aluminum plants comprises an induced draft assembly 1 and a rotating shaft 6, wherein the rotating shaft 6 is installed on a base 9 through a first bearing 2 and a second bearing 5, the induced draft assembly 6 is arranged at the front end of the rotating shaft 6, and a coupler 7 connected with a motor is arranged at the rear end of the rotating shaft 6. A casing (not shown in the figure) is arranged at the outer side of the induced draft assembly 1, and the fan assembly comprises a front annular plate 11, a rear annular plate 13 and a plurality of fan blades 12 which are arranged between the front annular plate and the rear annular plate in an annular and equidistant mode; a first cooling unit 3 and a second cooling unit 4, which have the same structure as the induced draft unit 1 but are small in size, are disposed on the rotating shaft 6 between the first bearing 2 and the second bearing 5, and when the rotating shaft 6 rotates, the first cooling unit 3 and the second cooling unit 4 cool the first bearing 2 and the second bearing 5, respectively. The outer side covers of the first cooling assembly 3 and the second cooling assembly 4 are provided with mesh enclosures 8, each mesh enclosure 8 is an arc-shaped or U-shaped mesh plate and is buckled on the outer sides of the first cooling assembly 3 and the second cooling assembly 4, and the axis of each mesh enclosure 8 is parallel to the rotating shaft 6. The base 9 is composed of an upper counterweight part 91 and a lower supporting frame 92, and lifting rings are arranged at the tops of the first bearing 2 and the second bearing 5.

During the use, the motor drives pivot 6 rotatory, induced air subassembly 6 work, at this moment, radial air all around is extracted respectively to first cooling module 3 and second cooling module 4, the air of extraction turns to the back, respectively the axial blows the cooling to first bearing 2 and second bearing 5, screen panel 8 keeps off the air intake at first cooling module 3 and second cooling module 4, but filters impurity, guarantee two cooling module's normal work, simultaneously because two cooling module's structural feature, two cooling module are the side by side extraction air, both influence each other is less.

Claims

1. A large induced draft fan for an aluminum plant comprises an induced draft assembly (1) and a rotating shaft (6), wherein the rotating shaft (6) is installed on a base (9) through a first bearing (2) and a second bearing (5), a shell is arranged on the outer side of the induced draft assembly (1) in a matching mode, and the induced draft fan assembly comprises a front annular plate (11), a rear annular plate (13) and a plurality of fan blades (12) which are coaxially arranged between the front annular plate and the rear annular plate in an equidistant mode; the method is characterized in that: set on pivot (6) between first bearing (2) and second bearing (5) and have the same but the less first cooling module (3) of size and second cooling module (4) of induced air subassembly (1) structure, when pivot (6) are rotatory, first cooling module (3) and second cooling module (4) cool off first bearing (2) and second bearing (5) respectively.

2. The large induced draft fan for the aluminum plant according to claim 1, wherein: and mesh enclosures (8) are covered on the outer sides of the first cooling assembly (3) and the second cooling assembly (4).

3. The large induced draft fan for the aluminum plant according to claim 2, wherein: the mesh enclosure (8) is an arc-shaped or U-shaped mesh plate and is buckled on the outer sides of the first cooling assembly (3) and the second cooling assembly (4), and the axis of the mesh enclosure (8) is parallel to the rotating shaft (6).

4. The large induced draft fan for the aluminum plant according to claim 1, wherein: the base (9) is composed of an upper counterweight part (91) and a lower supporting frame (92).

5. The large induced draft fan for the aluminum plant according to claim 1, wherein: and lifting rings are arranged at the tops of the first bearing (2) and the second bearing (5).

6. The large induced draft fan for the aluminum plant according to claim 1, wherein: and a coupler (7) connected with a motor is arranged at the rear end of the rotating shaft (6).