CN219911236U - Centrifugal fan with shaft sleeve - Google Patents

Abstract

The utility model discloses a centrifugal fan with a shaft sleeve, which belongs to the technical field of centrifugal fans and comprises a base and a driving mechanism arranged on the base, wherein the driving mechanism comprises a main motor fixedly arranged above the base, an extension shaft coaxially connected with an output shaft of the main motor, the shaft sleeve arranged on the extension shaft and an impeller arranged on the shaft sleeve, a hood is arranged on the side part of the base, the hood is of an internal hollow structure, an air inlet is arranged on one side of the hood, which is away from the main motor, the extension shaft, the shaft sleeve and the impeller are all positioned in an inner cavity of the hood, a mounting groove is formed on one side of the hood, which is positioned by the main motor, a side plate is filled in the mounting groove, a plurality of ear seats are extended from the side plate, and bolts penetrating into the base are arranged on the ear seats along the horizontal direction. The extension shaft of the main motor rotates on the shaft sleeve, so that the stability of the extension shaft and the impeller on the extension shaft is enhanced.

Description

Centrifugal fan with shaft sleeve

Technical Field

The utility model belongs to the technical field of centrifugal fans, and particularly relates to a centrifugal fan with a shaft sleeve.

Background

The centrifugal fan is a machine for improving the pressure of gas and discharging the gas by means of input mechanical energy, and is widely used for ventilation, dust discharge and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc.

In carrying out the present utility model, the inventors have found that at least the following problems exist in this technology: most of the existing centrifugal fans are provided with impellers directly on the output shafts of the main motors, so that the output shafts of the main motors drive the impellers to operate, but because the impellers are heavier, the pressure born by the output shafts is larger under the action of no external reinforcing structure, and the stability of the impellers is not facilitated.

To this end, we propose a centrifugal fan with a sleeve solving the above problems.

Disclosure of Invention

The utility model mainly aims to provide a centrifugal fan with a shaft sleeve, wherein an extension shaft of a main motor rotates on the shaft sleeve, so that the stability of the extension shaft and an impeller on the extension shaft is enhanced, and the problems in the background technology can be effectively solved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a centrifugal fan with axle sleeve, includes the base and sets up actuating mechanism on the base, actuating mechanism include fixed mounting in the main motor of base top, with the output shaft coaxial coupling's of main motor extension axle, install in extension epaxial axle sleeve and install the impeller on the axle sleeve, wherein the lateral part of base is provided with the aircraft bonnet, the aircraft bonnet is inside hollow structure, just one side that the aircraft bonnet was facing away from main motor is equipped with the air intake, extension axle, axle sleeve and impeller all are located the aircraft bonnet inner chamber, the mounting groove has been seted up to the aircraft bonnet one side that the aircraft bonnet is located main motor place, and the intussuseption of mounting groove is filled with the curb plate.

As a preferred embodiment, a plurality of ear seats extend out of the side plate, and each ear seat is provided with a bolt penetrating into the base along the horizontal direction; thereby fixing the side plate on the machine cover through a plurality of lugs and a plurality of bolts.

As a preferred embodiment, a discharge pipe is welded on one side of the air outlet of the base, a mounting seat is welded on one side of the top wall of the discharge pipe, and a servo motor is fixedly arranged on one side of the mounting seat; the main motor and the servo motor all need external electric facilities to supply power, and the main motor and the servo motor are all arranged horizontally.

As a preferred embodiment, an output shaft of the servo motor is coaxially connected with an external fulcrum shaft, and the external fulcrum shaft is horizontally arranged in the mounting seat and is rotationally connected with the mounting seat; so that the servo motor can drive the outer support shaft to stably operate when operating.

As a preferable implementation mode, an extension plate is fixedly sleeved on the outer support shaft, and a dust screen is arranged on the inner side of the extension plate; wherein the dust screen is disposed over the opening of the discharge duct so as to filter air blown out from the discharge duct.

As a preferred embodiment, an auxiliary plate is fixedly welded on the side of the discharge pipe facing away from the main motor, and the auxiliary plate is kept horizontal; when the extension plate drives the dust screen to turn over for an angle, the extension plate can be contacted with the auxiliary plate, so that the auxiliary plate is utilized to flap and shake the dust screen, and dust on the dust screen is shaken off.

In summary, the technical effects and advantages of the present utility model are:

according to the centrifugal fan with the shaft sleeve, the mounting groove is formed in the hood, the side plate is filled in the mounting groove, the shaft sleeve is arranged on the side plate, and the extension shaft of the main motor rotates on the shaft sleeve, so that the stability of the extension shaft and the impeller on the extension shaft is enhanced;

this centrifugal fan with axle sleeve is through setting up the dust screen in discharge pipe opening part to filter exhaust air, make discharge pipe department can not discharge a large amount of dust that are infected with, reduced the dust, the periodic drive servo motor operation can drive the dust screen and overturn 180, makes the dust screen beat on the accessory plate, thereby makes the dust on the dust screen automatic drop, has removed the trouble that the manual work used instrument was cleared up from.

Drawings

FIG. 1 is a schematic view of a structure of one side of the present utility model;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view of another embodiment of the present utility model;

fig. 4 is an enlarged view of the structure of fig. 2B according to the present utility model.

In the figure: 1. a base; 2. a main motor; 3. a hood; 4. a side plate; 5. an ear seat; 6. an extension shaft; 7. a shaft sleeve; 8. an impeller; 9. a discharge pipe; 10. a mounting base; 11. a servo motor; 12. an outer support shaft; 13. an extension plate; 14. a dust screen; 15. and an auxiliary plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, a centrifugal fan with a shaft sleeve comprises a base 1 and a driving mechanism arranged on the base 1, wherein the driving mechanism comprises a main motor 2 fixedly arranged above the base 1, an extension shaft 6 coaxially connected with an output shaft of the main motor 2, a shaft sleeve 7 arranged on the extension shaft 6 and an impeller 8 arranged on the shaft sleeve 7, a hood 3 is arranged on the side part of the base 1, the hood 3 is of a hollow structure, an air inlet is arranged on one side of the hood 3, facing away from the main motor 2, of the extension shaft 6, the shaft sleeve 7 and the impeller 8 are all positioned in an inner cavity of the hood 3, a mounting groove is formed on one side of the hood 3, a side plate 4 is filled in the mounting groove, a plurality of ear seats 5 extend out of the side plate 4, and bolts penetrating into the base 1 are horizontally arranged on each ear seat 5, so that the side plate 4 is fixed on the hood 3 through the plurality of ear seats 5 and the bolts, the main motor 2 is horizontally arranged, and power is supplied by an external power facility;

the air outlet of the base 1 is provided with a discharge pipe 9 in a welding mode, one side of the top wall of the discharge pipe 9 is welded with a mounting seat 10, one side of the mounting seat 10 is fixedly provided with a servo motor 11, the main motor 2 and the servo motor 11 are powered by external electric facilities, the main motor 2 and the servo motor 11 are horizontally arranged, an output shaft of the servo motor 11 penetrates through the mounting seat 10 and is coaxially connected with an outer support shaft 12, the outer support shaft 12 is horizontally arranged in the mounting seat 10 and is rotationally connected with the mounting seat 10, the outer support shaft 12 can be driven to stably operate when the servo motor 11 operates, an extension plate 13 is fixedly sleeved on the outer support shaft 12, a dust screen 14 is mounted on the inner side of the extension plate 13, the dust screen 14 is arranged above an opening of the discharge pipe 9, air blown out from the discharge pipe 9 is filtered, an auxiliary plate 15 is fixedly welded on one side of the discharge pipe 9, the auxiliary plate 15 is kept horizontal, and after the extension plate 13 drives the dust screen 14 to overturn 180 DEG, the auxiliary plate 15 can be contacted with the auxiliary plate 15, so that the dust screen 14 can be driven to shake, and the dust on the dust screen 14 can be beaten by the auxiliary plate 15.

Working principle: when the dust-proof device is used, the main motor 2 is driven to operate so as to drive the extension shaft 6, the shaft sleeve 7 and the impeller 8 which are connected with the main motor 2 to operate, air can be sucked from the air inlet of the hood 3 by utilizing the high-speed operation of the impeller 8, finally the air is sprayed out from the opening of the discharge pipe 9, the sprayed air can be directly filtered by the dust screen 14, dust and the like contained in the air can be attached to the dust screen 14, and only the servo motor 11 is required to be periodically driven to operate so as to drive the outer support shaft 12, the extension plate 13 and the dust screen 14 to turn 180 degrees, the extension plate 13 is directly beaten on the auxiliary plate 15 for a plurality of times, and the dust on the dust screen 14 can be shaken off, so that the dust is automatically cleaned.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a centrifugal fan with axle sleeve, includes base (1) and sets up actuating mechanism on base (1), its characterized in that actuating mechanism includes fixed mounting in main motor (2) of base (1) top, with main motor (2) output shaft coaxial coupling's extension axle (6), install axle sleeve (7) on extension axle (6) and install impeller (8) on axle sleeve (7), and wherein the lateral part of base (1) is provided with aircraft bonnet (3), aircraft bonnet (3) are the hollow structure in inside, just one side of aircraft bonnet (3) dorsad main motor (2) is equipped with the air intake, extension axle (6), axle sleeve (7) and impeller (8) all are arranged in aircraft bonnet (3) inner chamber, aircraft bonnet (3) are located one side of main motor (2) and have been seted up the mounting groove, and the intussuseption of mounting groove is filled with curb plate (4).

2. A centrifugal fan with a shaft sleeve according to claim 1, characterized in that a plurality of ear seats (5) extend from the side plate (4), and each ear seat (5) is provided with a bolt penetrating into the base (1) along the horizontal direction.

3. The centrifugal fan with the shaft sleeve according to claim 1, wherein a discharge pipe (9) is welded on one side of an air outlet of the base (1), a mounting seat (10) is welded on one side of the top wall of the discharge pipe (9), and a servo motor (11) is fixedly mounted on one side of the mounting seat (10).

4. A centrifugal fan with a shaft sleeve according to claim 3, characterized in that the output shaft of the servo motor (11) is coaxially connected with an external fulcrum shaft (12), and the external fulcrum shaft (12) is horizontally arranged in the mounting seat (10) and is rotatably connected with the mounting seat (10).

5. The centrifugal fan with the shaft sleeve according to claim 4, wherein the outer support shaft (12) is fixedly sleeved with an extension plate (13), and a dust screen (14) is arranged on the inner side of the extension plate (13).

6. Centrifugal fan with a shaft sleeve according to claim 5, characterized in that the side of the discharge pipe (9) facing away from the main motor (2) is fixedly welded with an auxiliary plate (15), which auxiliary plate (15) is kept horizontal.