Centrifugal fan with adjustable outer diameter of impeller

Abstract

The utility model discloses a centrifugal fan capable of adjusting the outer diameter of an impeller, which comprises a mounting base, and a fixed motor is fixed on one side of the top of the mounting base; the output end 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 fixed to the circle center of a rotating impeller blade, and the front side of the rotating impeller blade is connected with an adjustable impeller blade through an adjusting mechanism; a dustproof net plate is further arranged at the position of an air outlet in the upper left end of the fixed shell and the upper left end of the closed shell. According to the centrifugal fan with the adjustable outer diameter of the impeller, the adjusting mechanism is arranged, extension between the rotating impeller blades and the adjustable impeller blades can be achieved through the arrangement of the adjusting mechanism, more energy is saved when wind power is adjusted, and by pulling a dustproof net plate and resetting of a reset spring, the wind power can be effectively adjusted. And dust on the surface of the dustproof net plate can be cleaned in a vibration mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field, concretely is a centrifugal fan of adjustable impeller outer diameter. BACKGROUND

[0002] Centrifugal fan is relied on inputted mechanical energy, improves gas pressure and sends gas, and it is a kind of driven fluid machinery;Centrifugal fan is widely used in factory, mine, tunnel, cooling tower, vehicle, ship and ventilation, dust removal and cooling of building, ventilation and air induction of boiler and industrial furnace, cooling and ventilation in air conditioning equipment and household appliance equipment, grain drying and selection and sending, wind tunnel air source and air cushion ship inflation and propulsion etc.

[0003] The existing centrifugal fan is usually integrally formed with the base or mounted on the base by bolts, which is complicated and time-consuming and laborious during installation. To overcome the above-mentioned defects, the energy-saving centrifugal fan disclosed in the prior art (Chinese patent with application number CN202023173346.1 and application date of December 24, 2020) can be referred to. The mounting disc of the centrifugal fan can be inserted into the groove of the centrifugal fan, and the centrifugal fan is fixedly installed on the mounting disc by inserting the clamping block into the clamping groove on the inner wall of the groove. The centrifugal fan is convenient to install on and detach from the mounting disc, making it more convenient to overhaul and replace the centrifugal fan.

[0004] Although the above-mentioned device can be conveniently installed and detached, there are still other problems in actual work. Since the outer diameter of the impeller of the centrifugal fan is mostly fixed, in order to increase the wind power, only the gear position of the fan can be adjusted, which cannot effectively save energy.

[0005] Therefore, we propose a centrifugal fan with adjustable impeller outer diameter to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a centrifugal fan with adjustable impeller outer diameter to solve the problem that the outer diameter of the impeller of the centrifugal fan on the market is mostly fixed, and only the gear position of the fan can be adjusted to increase the wind power, which cannot effectively save energy.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A centrifugal fan of adjustable impeller outer diameter, including installation base, one side of the top of installation base is fixed with fixed motor, still include: the output end position of fixed motor is connected with the outside of rotating rod through transmission assembly, the outside of rotating rod is rotatably arranged in the inside of fixed shell, the front side of fixed shell is connected with the between of closed shell through lock bolt, the front side center position of closed shell is equipped with air inlet, the outside of rotating rod is fixed in the center position of rotating vane, and the front side of rotating vane is connected with adjustable vane through adjusting mechanism, the air outlet position of fixed shell and closed shell left upper end position still is provided with dust screen.

[0008] As the preferred technical scheme of the application, the adjusting mechanism includes an adjustable vane slidingly arranged inside the rotating vane, the outside of the adjustable vane is rotatably provided with a rotating threaded rod, and the outside of the rotating threaded rod is threadedly connected to the inside of the containing tube.

[0009] As the preferred technical scheme of the application, the end of the rotating threaded rod away from the rotating rod is provided with a hexagonal opening, and the rear end of the containing tube is fixed to one side surface of the rotating vane.

[0010] As the preferred technical scheme of the application, the rotating threaded rod is provided with two groups at equal angles about the center of the rotating vane, and the adjustable vane forms a sliding structure with the inside of the rotating vane through the rotating threaded rod.

[0011] As the preferred technical scheme of the application, the dust screen is slidingly arranged on the outside of the guide rail at one side of the bottom of the dust screen, the outside of the guide rail is fixed to the leading end of the return spring, the trailing end of the return spring is fixed to one side of the dust screen, and one group of fixed blocks is fixed to one side of the top of the fixed shell and the closed shell.

[0012] As the preferred technical scheme of the application, one end of each of the two groups of guide rails is fixed to one side of the fixed shell and the closed shell, and the dust screen forms an elastic sliding structure with the outside of the guide rail through the return spring.

[0013] Compared with the prior art, the adjustable centrifugal fan with adjustable impeller outer diameter has the following advantages: the adjusting mechanism is provided, which can extend the rotating vane and the adjustable vane, thereby saving energy when adjusting the wind power, and the dust on the surface of the dust screen can be cleaned by pulling the dust screen, resetting the return spring, and vibrating.

[0014] 1. The locking bolt is arranged, by disassembling the locking bolt, the fixed shell and the closed shell can be conveniently disassembled, the internal maintenance of the centrifugal fan is facilitated, further, the rotating threaded rod is arranged, the rotating threaded rod is rotated through a hexagonal wrench, the position of the rotating threaded rod in the accommodating pipe is moved, the position between the rotating vane and the adjustable vane is adjusted, and then the wind power can be increased more energy-savingly.

[0015] 2. The dust screen plate is arranged, dust can be filtered through the dust screen plate, the dust screen plate can slide outside the guide rail by pulling the dust screen plate, vibration is generated between the one side of the guide rail and the fixed block, the dust screen plate is vibrated and cleaned, and then the dust in the dust screen plate can be cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a bottom view structural schematic diagram of the utility model;

[0018] Figure 3 It is a front view structural schematic diagram of the fixed shell of the utility model;

[0019] Figure 4 It is a top view structural schematic diagram of the rotating rod of the utility model;

[0020] Figure 5 It is a front view structural schematic diagram of the utility model Figure 4 It is an enlarged structural schematic diagram of A in the utility model;

[0021] Figure 6 It is a front view structural schematic diagram of the dust screen plate of the utility model.

[0022] In the drawing: 1, mounting base; 2, fixed motor; 3, transmission assembly; 4, rotating rod; 5, fixed shell; 6, closed shell; 7, air inlet; 8, locking bolt; 9, rotating vane; 10, adjustable vane; 11, rotating threaded rod; 12, accommodating pipe; 13, dust screen plate; 14, guide rail; 15, return spring; 16, fixed block. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-6 The utility model provides the following technical scheme: a centrifugal fan of adjustable impeller outer diameter.

[0025] Embodiment one: in order to solve the problem that the impeller outer diameter of the centrifugal fan on the market is mostly fixed, in order to increase wind power, only the gear of the fan can be adjusted, and the operation cannot effectively save energy, please refer to the attached Figure 1 - attached Figure 5 , including installation base 1, the top side of installation base 1 is fixed with fixed motor 2;It also includes: the output end position of fixed motor 2 is connected with the outside of rotating rod 4 through transmission assembly 3, the outside of rotating rod 4 is rotatably arranged in the inside of fixed shell 5, the front side of fixed shell 5 is connected with the left side of closed shell 6 through locking bolt 8;The front side center position of closed shell 6 is provided with air inlet 7, the outside of rotating rod 4 is fixed at the center position of rotating impeller piece 9, and the front side of rotating impeller piece 9 is connected with adjustable impeller piece 10 through adjusting mechanism;Adjusting mechanism includes adjustable impeller piece 10 slidably arranged in the inside of rotating impeller piece 9, the outside of adjustable impeller piece 10 is rotatably provided with rotating screw rod 11, and the outside of rotating screw rod 11 is threadedly connected at the inside position of containing pipe 12;The end position of rotating screw rod 11 away from rotating rod 4 is provided with hexagonal opening, the rear end position of containing pipe 12 is fixed on the surface of one side of rotating impeller piece 9;Rotating screw rod 11 is provided with two groups of equal angle about the center position of rotating impeller piece 9, and adjustable impeller piece 10 forms a sliding structure between the inside of rotating screw rod 11 and rotating impeller piece 9.

[0026] When the outer diameter of the impeller needs to be adjusted, first, the locking bolt 8 is rotated, so that the fixed shell 5 and the closed shell 6 are separated, then the hexagonal wrench is inserted into the inside of the rotating screw rod 11, and the rotating screw rod 11 is rotated, so that one side of the rotating screw rod 11 is threadedly connected in the inside of the containing pipe 12, at this time, the position of the rotating impeller piece 9 and the adjustable impeller piece 10 is adjusted, so that the position of the adjustable impeller piece 10 in the inside of the rotating impeller piece 9 is adjusted, thereby increasing the wind area between the rotating impeller piece 9 and the adjustable impeller piece 10, when the output end of the fixed motor 2 operates, the output end of the fixed motor 2 can drive the rotating rod 4 to rotate in the inside of the fixed shell 5 through the transmission assembly 3, the fixed shell 5 drives the rotating impeller piece 9 and the adjustable impeller piece 10 to rotate, so that the air enters from the air inlet 7, and is discharged through the left side upper position of the fixed shell 5 and the closed shell 6, thereby completing the work.

[0027] In order to fix the air outlet position of the upper left end position of the closure shell 6 and the fixed shell 5, a dust screen plate 13 is further arranged; the bottom side position of the dust screen plate 13 is slidingly arranged outside the guide rail 14, and the outer side of the guide rail 14 is fixed with the first end position of the reset spring 15, and the tail end position of the reset spring 15 is fixed on one side of the dust screen plate 13; the top side position of the fixed shell 5 and the closure shell 6 is fixed with a group of fixed blocks 16; one end of the two groups of guide rails 14 is respectively fixed on the side position of the fixed shell 5 and the closure shell 6, and the dust screen plate 13 forms an elastic sliding structure between the outer side of the guide rail 14 and the reset spring 15.

[0028] In order to clean the surface position of the dust screen plate 13, pull the handle on one side of the dust screen plate 13, then the dust screen plate 13 can slide on the outer side of the guide rail 14, so that one side of the dust screen plate 13 extrudes the reset spring 15, and when moved to a certain position, release the handle, so that the dust screen plate 13 is reset by the reset spring 15, so that one side of the dust screen plate 13 hits one side of the fixed block 16, so that the dust screen plate 13 vibrates, so that the surface position of the dust screen plate 13 can be conveniently cleaned.

[0029] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An adjustable centrifugal fan of impeller outer diameter, comprising a mounting base (1), the top side of the mounting base (1) is fixed with a fixed motor (2); characterized in that Further comprising: The output end position of the fixed motor (2) is connected with the outer side of a rotating rod (4) through a transmission assembly (3), the outer side of the rotating rod (4) is rotatably arranged in the inside of a fixed shell (5), the front side of the fixed shell (5) is connected with a closed shell (6) through locking bolts (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 a rotating impeller blade (9), and the front side of the rotating impeller blade (9) is connected with an adjustable impeller blade (10) through an adjusting mechanism; The air outlet position of the left upper end position of the fixed shell (5) and the closed shell (6) is further provided with a dust screen plate (13).

2. The centrifugal fan of claim 1, wherein: The adjusting mechanism comprises the adjustable impeller blade (10) which is slidably arranged in the inside of the rotating impeller blade (9), the outer side of the adjustable impeller blade (10) is rotatably provided with a rotating threaded rod (11), and the outer side of the rotating threaded rod (11) is threadedly connected with the inside position of a containing tube (12).

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

4. The adjustable impeller outer diameter centrifugal fan of claim 2, wherein: The rotating threaded rod (11) is provided with two groups at equal angles about the center position of the rotating impeller blade (9), and the adjustable impeller blade (10) forms a sliding structure with the inside of the rotating impeller blade (9) through the rotating threaded rod (11).

5. The adjustable impeller outer diameter centrifugal fan of claim 1, wherein: The dust screen plate (13) is slidably arranged on the outside of a guide rail (14) at the bottom side position, the outside of the guide rail (14) is fixed with the leading end position of a return spring (15), the trailing end position of the return spring (15) is fixed on one side of the dust screen plate (13), and the top side position of the fixed shell (5) and the closed shell (6) is fixed with a group of fixed blocks (16).

6. A centrifugal fan of the type defined above, characterized in that: One end of the two groups of guide rails (14) is respectively fixed on one side position of the fixed shell (5) and the closed shell (6), and the dust screen plate (13) forms an elastic sliding structure with the outside of the guide rail (14) through the return spring (15).

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