CN223908419U - Centrifugal fan with adjustable impeller external diameter - Google Patents

Abstract

This utility model discloses a centrifugal fan with an adjustable impeller outer diameter, including a mounting base, on which a fixed motor is fixedly mounted. It also includes: the output end of the fixed motor is connected to the outer side of a rotating rod via a transmission assembly; the outer side of the rotating rod is fixed to the center of the rotating impeller blades; and the front side of the rotating impeller blades is connected to an adjustable impeller blade via an adjustment mechanism. A dustproof mesh is also provided at the air outlet position at the upper left end of the fixed housing and the closed housing. This centrifugal fan with an adjustable impeller outer diameter is equipped with an adjustment mechanism. The adjustment mechanism allows for an extension between the rotating impeller blades and the adjustable impeller blades, thus improving energy efficiency when adjusting the airflow. Furthermore, by pulling the dustproof mesh, the return spring resets the mesh, and vibration cleans the dust from its surface.

Description

Centrifugal fan with adjustable impeller external diameter

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan with an adjustable impeller outer diameter.

Background

Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and selection of grains, inflation and propulsion of wind tunnel wind sources and air cushion ships, and the like.

The existing centrifugal fan is generally integrally formed with the base or is mounted on the base through bolts, the mounting process is complicated, time and labor are wasted, in order to overcome the defects, the energy-saving centrifugal fan disclosed in the prior art (China patent with application number of CN202023173346.1 and application date of 2020-12-24) can be referred to, the mounting disc of the centrifugal fan can be inserted into the groove of the centrifugal fan, the centrifugal fan is fixedly mounted on the mounting disc through inserting the clamping block into the clamping groove in the inner wall of the groove, and the centrifugal fan is convenient to mount on the mounting disc and detach from the mounting disc, so that the maintenance and replacement of the centrifugal fan are more convenient.

Although the above-mentioned device can be conveniently installed and disassembled, there are other problems in practical operation, because the impeller outer diameter of the centrifugal fan is mostly fixed, in order to increase the wind power, only the gear of the fan can be adjusted, and the operation cannot effectively perform energy-saving treatment.

Therefore, we propose a centrifugal fan with adjustable impeller outer diameter, which can well solve the above problems.

Disclosure of utility model

The utility model aims to provide a centrifugal fan with an adjustable impeller outer diameter, which aims to solve the problems that most of impeller outer diameters of the centrifugal fans in the market proposed by the background technology are fixed, and energy-saving treatment cannot be effectively carried out by the operation only through adjusting the gear of the fans in order to increase wind power.

The centrifugal fan with the adjustable impeller outer diameter comprises a mounting base, wherein a fixed motor is fixed on one side of the top of the mounting base, the centrifugal fan with the adjustable impeller outer diameter further comprises a fixed motor, the output end position of the fixed motor is connected with the outer side of a rotating rod through a transmission assembly, the outer side of the rotating rod is rotatably arranged in a fixed shell, the front side of the fixed shell is connected with a closed shell through a locking bolt, an air inlet is formed in the center position of the front side of the closed shell, the outer side of the rotating rod is fixed at the center position of a rotating impeller blade, the front side of the rotating impeller blade is connected with the adjustable impeller blade through an adjusting mechanism, and a dustproof screen is further arranged at the air outlet position of the left upper end position of the fixed shell and the left upper end position of the closed shell.

As a preferable technical scheme of the application, the adjusting mechanism comprises an adjustable impeller blade which is arranged in the rotating impeller blade in a sliding way, a rotating threaded rod is arranged on the outer side of the adjustable impeller blade in a rotating way, and the outer side of the rotating threaded rod is connected with the inner side of the accommodating pipe in a threaded way.

As a preferable technical scheme of the application, one end position of the rotary threaded rod, which is far away from the rotary rod, is provided with a hexagonal opening, and the rear end position of the accommodating tube is fixed on one side surface of the rotary impeller blade.

As the preferable technical scheme of the application, the rotating threaded rod is provided with two groups of rotating impeller blades at equal angles relative to the circle center position of the rotating impeller blades, and the adjustable impeller blades form a sliding structure through the rotating threaded rod and the inside of the rotating impeller blades.

As the preferable technical scheme of the application, one side of the bottom of the dustproof screen plate is arranged on the outer side of the guide rail in a sliding way, the outer side of the guide rail is fixed with the head end position of the return spring, the tail end position of the return spring is fixed on one side of the dustproof screen plate, and a group of fixing blocks are fixed on the positions of the top of the fixed shell and the closed shell.

As the preferable technical scheme of the application, one ends of the two groups of guide rails are respectively fixed at one side of the fixed shell and one side of the closed shell, and the dustproof screen plate forms an elastic sliding structure with the outer sides of the guide rails through the reset springs.

Compared with the prior art, the centrifugal fan with the adjustable impeller outer diameter has the beneficial effects that the centrifugal fan with the adjustable impeller outer diameter is provided with the adjusting mechanism, the adjusting mechanism can extend between the rotating impeller blades and the adjustable impeller blades, so that the energy is saved when wind power is adjusted, the dust screen plate is pulled, the dust on the surface of the dust screen plate can be cleaned in a vibration mode through resetting of the reset spring, and the specific contents are as follows:

1. Set up the locking bolt, through the dismantlement to locking bolt, can conveniently be to the dismantlement of fixed shell with closed shell, make things convenient for the later stage to the inside maintenance processing that carries out of centrifugal fan, further, set up and rotated the threaded rod, rotatable rotation threaded rod through hexagonal spanner realizes rotating the threaded rod and carrying out the removal of position in the inside that holds the pipe, realizes rotating the position between impeller piece and the adjustable impeller piece and obtains the adjustment, and then can more energy-conserving increase wind-force.

2. The dustproof screen plate is arranged, dust can be filtered through the dustproof screen plate, the dustproof screen plate can slide on the outer side of the guide rail by pulling, vibration is generated by contact between one side of the guide rail and the fixed block, vibration cleaning of the dustproof screen plate is realized, and dust inside the dustproof screen plate can be cleaned.

Drawings

FIG. 1 is a schematic diagram of a front view structure of the present utility model;

FIG. 2 is a schematic view of the bottom structure of the present utility model;

FIG. 3 is a schematic view of the front view of the stationary housing of the present utility model;

FIG. 4 is a schematic top view of a turning bar according to the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 4A according to the present utility model;

fig. 6 is a schematic diagram of a main view structure of the dust screen of the present utility model.

1, A mounting base; 2, a fixed motor, 3, a transmission component, 4, a rotating rod, 5, a fixed shell, 6, a closed shell, 7, an air inlet, 8, a locking bolt, 9, a rotating impeller blade, 10, an adjustable impeller blade, 11, a rotating threaded rod, 12, a containing tube, 13, a dustproof screen plate, 14, a guide rail, 15, a return spring, 16 and a fixed block.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the utility model provides a centrifugal fan with an adjustable impeller outer diameter.

In order to solve the problem that most of the outer diameters of impellers of centrifugal fans in the current market are fixed, and the energy-saving treatment cannot be effectively carried out by adjusting the gear of the fans only for increasing the wind power, reference is made to fig. 1-5, and the centrifugal fan comprises a mounting base 1, wherein a fixed motor 2 is fixed on one side of the top of the mounting base 1; the output end position of the fixed motor 2 is connected with the outer side of the rotating rod 4 through the transmission component 3, the outer side of the rotating rod 4 is rotatably arranged in the fixed shell 5, and the front side of the fixed shell 5 is connected with the closed shell 6 through the locking bolt 8; the front side center position of the closed shell 6 is provided with an air inlet 7, the outer side of the rotating rod 4 is fixed at the center position of the rotating impeller blade 9, the front side of the rotating impeller blade 9 is connected with the adjustable impeller blade 10 through an adjusting mechanism, the adjusting mechanism comprises the adjustable impeller blade 10 which is arranged in the rotating impeller blade 9 in a sliding mode, the outer side of the adjustable impeller blade 10 is rotatably provided with a rotating threaded rod 11, the outer side of the rotating threaded rod 11 is in threaded connection with the inner side position of the accommodating tube 12, one end position of the rotating threaded rod 11, far away from the rotating rod 4, is provided with a hexagonal opening, the rear end position of the accommodating tube 12 is fixed on one side surface of the rotating impeller blade 9, two groups of angles of the rotating threaded rod 11 are arranged at the center position of the rotating impeller blade 9, and the adjustable impeller blade 10 forms a sliding structure through the rotating threaded rod 11 and the inside of the rotating impeller blade 9.

When the external diameter of impeller is required to be adjusted, firstly, through rotating locking bolt 8, and then can make the separation between fixed shell 5 and closed shell 6, then insert the inside of rotating threaded rod 11 through hexagonal wrench, and rotate threaded rod 11, make one side of rotating threaded rod 11 carry out threaded connection in the inside of holding pipe 12, at this moment, adjust the position between impeller blade 9 and the adjustable impeller blade 10, make adjustable impeller blade 10 adjust in the inside position of impeller blade 9, and then the windward area between impeller blade 9 and the adjustable impeller blade 10 has been increased, when the output of fixed motor 2 moves, the output accessible drive assembly 3 of fixed motor 2 drives dwang 4 and rotates in the inside of fixed shell 5, fixed shell 5 drives impeller blade 9 and adjustable impeller blade 10 and rotates the work, and then can make wind get into from air intake 7, and discharge through the upper left side position of fixed shell 5 and closed shell 6, and then can accomplish the work.

In the second embodiment, a dustproof screen 13 is further arranged at an air outlet position at the left upper end position of the fixed shell 5 and the closed shell 6, one side of the bottom of the dustproof screen 13 is slidably arranged at the outer side of the guide rail 14, the outer side of the guide rail 14 is fixed with the head end position of the return spring 15, the tail end position of the return spring 15 is fixed at one side of the dustproof screen 13, a group of fixing blocks 16 are fixed at the top side positions of the fixed shell 5 and the closed shell 6, one ends of the two groups of guide rails 14 are respectively fixed at one side positions of the fixed shell 5 and the closed shell 6, and an elastic sliding structure is formed between the dustproof screen 13 and the outer side of the guide rail 14 through the return spring 15.

In order to clean the surface position of the dust screen 13, the handle on one side of the dust screen 13 is pulled, then the dust screen 13 can slide on the outer side of the guide rail 14, so that one side of the dust screen 13 is extruded by the reset spring 15, and when the dust screen 13 moves to a certain position, the handle is loosened again, so that the dust screen 13 is reset by the reset spring 15, one side of the dust screen 13 is impacted to one side of the fixed block 16, so that the dust screen 13 vibrates, and the cleaning treatment can be conveniently performed on the surface position of the dust screen 13.

What is not described in detail in this specification is prior art known to those skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The centrifugal fan with the adjustable impeller outer diameter comprises a mounting base (1), wherein a fixed motor (2) is fixed on one side of the top of the mounting base (1);

The rotary impeller is characterized by further comprising the following steps that the output end position of the fixed motor (2) is connected with the outer side of the rotary rod (4) through the transmission assembly (3), the outer side of the rotary rod (4) is rotatably arranged in the fixed shell (5), the front side of the fixed shell (5) is connected with the closed shell (6) through the locking bolt (8), an air inlet (7) is formed in the center position of the front side of the closed shell (6), the outer side of the rotary rod (4) is fixed at the center position of the rotary impeller blade (9), and the front side of the rotary impeller blade (9) is connected with the adjustable impeller blade (10) through the adjusting mechanism;

The air outlet positions of the upper left ends of the fixed shell (5) and the closed shell (6) are also provided with dustproof screen plates (13).

2. The centrifugal fan with the adjustable impeller outer diameter according to claim 1, wherein the adjusting mechanism comprises adjustable impeller blades (10) which are slidably arranged inside the rotary impeller blades (9), a rotary threaded rod (11) is rotatably arranged on the outer side of the adjustable impeller blades (10), and the outer side of the rotary threaded rod (11) is in threaded connection with the inner side of the accommodating tube (12).

3. The centrifugal fan with the adjustable impeller outer diameter according to claim 2, wherein one end position of the rotating threaded rod (11) far away from the rotating rod (4) is provided with a hexagonal opening, and the rear end position of the accommodating tube (12) is fixed on one side surface of the rotating impeller blade (9).

4. The centrifugal fan with the adjustable impeller outer diameter according to claim 2, wherein two groups of rotating threaded rods (11) are arranged at equal angles relative to the circle center positions of the rotating impeller blades (9), and the adjustable impeller blades (10) form a sliding structure with the inside of the rotating impeller blades (9) through the rotating threaded rods (11).

5. The centrifugal fan with the adjustable impeller outer diameter according to claim 1, wherein the dust screen (13) is slidably arranged on the outer side of the guide rail (14) at one side of the bottom, the outer side of the guide rail (14) is fixed with the head end position of the return spring (15), the tail end position of the return spring (15) is fixed on one side of the dust screen (13), and a group of fixing blocks (16) are fixed on the positions of the top sides of the fixed shell (5) and the closed shell (6).

6. The centrifugal fan with the adjustable impeller outer diameter according to claim 5, wherein one ends of the two groups of guide rails (14) are respectively fixed at one side position of the fixed shell (5) and one side position of the closed shell (6), and the dustproof screen plate (13) forms an elastic sliding structure with the outer sides of the guide rails (14) through a return spring (15).