CN217176986U

CN217176986U - Environment-friendly centrifugal draught fan with noise reduction function

Info

Publication number: CN217176986U
Application number: CN202221133187.9U
Authority: CN
Inventors: 何妮娜; 王营; 李军营
Original assignee: Xi'an North Blower Co ltd
Current assignee: Xi'an North Blower Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-12
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to the technical field of ventilation mechanical equipment, in particular to an environment-friendly centrifugal draught fan with noise reduction function, which comprises a fan body and a dust screen, wherein the surface of the fan body is provided with two fixed slots, the improved centrifugal draught fan drives a pull rod through a sliding block by inserting a fixed inserted bar into the fixed slots, a pawl is driven to buckle the fixed inserted bar through the sliding of a rotating block inside a limit chute, quick installation is realized, the pull rod is pulled back, the pawl is driven to tilt up inside the limit chute through the sliding of the rotating block, the dust screen is convenient to disassemble, clean or maintain by workers, the maintenance cleaning efficiency is improved, the dust screen can be disassembled, the workers can clean the impeller inside the fan body while the dust screen is disassembled, and after the dust accumulation is prevented for too long time, the impeller is corroded, the unbalance phenomenon occurs, and the normal operation of the centrifugal fan is ensured.

Description

Environment-friendly centrifugal draught fan with noise reduction function

Technical Field

The utility model relates to a ventilation mechanical equipment technical field specifically is an environment-friendly centrifugal draught fan with function of making an uproar is fallen.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion. The centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy (pressure). In a single stage centrifugal fan, the gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser. In diffusers, the gas changes flow direction and the increase in conduit cross-sectional area slows the gas flow, which converts kinetic energy into pressure energy. The pressure increase occurs primarily in the impeller and secondarily in the diffusion process. In a multistage centrifugal fan, a flow reverser is used to direct the air flow to the next impeller, creating a higher pressure.

The inventor finds that the existing centrifugal draught fan device has the following problems: the dust screen on the existing centrifugal draught fan is generally fixed on the device by bolts, and is inconvenient to disassemble when the dust screen needs to be replaced, cleaned or maintained, so that the maintenance cleaning efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an environment-friendly centrifugal draught fan with function of making an uproar is fallen to solve the problem that proposes in the above-mentioned background art. In order to achieve the above object, the utility model provides a following technical scheme: an environment-friendly centrifugal draught fan with a noise reduction function comprises a draught fan body and a dust screen, wherein the surface of the draught fan body is provided with two fixed slots, the surface of the dust screen is fixedly connected with two fixed inserting rods, and the fixed inserting rods are movably inserted into the fixed slots;

the fan body's fixed surface is connected with the fixed block that quantity is two, the inside sliding connection of fixed block has the slider, the surface difference fixedly connected with pull rod and the damping piece of slider, the one end of pull rod is rotated and is connected with the commentaries on classics piece, the surface rotation of fan body is connected with the claw that supports that quantity is two, support claw and fixed inserted bar activity butt, support the inside of claw and seted up spacing spout, commentaries on classics piece sliding connection is in the inside of spacing spout.

Further preferably, a silencer of the centrifugal fan is installed at the air outlet of the fan body.

Further preferably, a sliding groove is formed in the fixed block, and the sliding block is connected to the inside of the fixed block in a sliding mode through the sliding groove.

Further preferably, the dust screen is a double-layer filter screen.

Further preferably, the dust screen is installed at the impeller of the blower body.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in, through the inside with fixed inserted bar insert fixed slot, promote the pull rod through the slider that slides, slide through the turning block and support the claw in the inside drive of spacing spout and buckle fixed inserted bar, realize quick installation, the pull rod is pulled back, slides through the turning block and supports the claw perk in the inside drive of spacing spout and realize quick unblock dismantlement, makes things convenient for the staff to dismantle the dust screen and gets off washing or maintenance, improves the clear efficiency of maintenance.

The utility model discloses in, can dismantle through the dust screen, can dismantle clear the time to the dust screen, the staff can clear up the inside impeller of fan body, prevents that the dust from piling up too much time after having prolonged, and the impeller is corroded, appears unbalance phenomenon, guarantees centrifugal fan's normal operating.

Drawings

FIG. 1 is a schematic front view of the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;

fig. 3 is a schematic diagram of the local enlarged structure of the fixing slot of the present invention.

In the figure: 1. a fan body; 2. a dust screen; 3. fixing the slot; 4. supporting the claw; 5. a pull rod; 6. a fixed block; 7. a slider; 8. a chute; 9. a damping block; 10. fixing the inserted rod; 11. rotating the block; 12. and a limiting sliding groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the staff of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: an environment-friendly centrifugal draught fan with a noise reduction function comprises a draught fan body 1 and a dust screen 2, wherein two fixed slots 3 are formed in the surface of the draught fan body 1, two fixed insertion rods 10 are fixedly connected to the surface of the dust screen 2, and the fixed insertion rods 10 are movably inserted into the fixed slots 3;

fixed surface of fan body 1 is connected with fixed block 6 that quantity is two, the inside sliding connection of fixed block 6 has slider 7, the surface difference fixedly connected with pull rod 5 and damping piece 9 of slider 7, the one end of pull rod 5 is rotated and is connected with commentaries on classics piece 11, the surface rotation of fan body 1 is connected with claw 4 that supports that quantity is two, support claw 4 and the 10 movable butt of fixed inserted bar, support the inside of claw 4 and seted up spacing spout 12, change 11 sliding connection in the inside of spacing spout 12 of piece.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the centrifugal fan silencer is installed at the air outlet of the fan body 1, and the noise of aerodynamic performance at the air outlet can be effectively reduced through the centrifugal fan silencer, so that the noise reduction effect is achieved.

In this embodiment, as shown in fig. 1, 2, and 3, a sliding groove 8 is formed in the fixed block 6, the sliding block 7 is slidably connected to the inside of the fixed block 6 through the sliding groove 8, the moving track of the sliding block 7 is limited by the sliding groove 8, and the effect that the pulling rod 5 cannot be pulled due to the deviation of the track of the sliding block 7 is prevented.

In this embodiment, as shown in fig. 1, 2 and 3, the outer surface of the damping block 9 is attached to the inner side wall of the sliding groove 8, and the damping block 9 provides a resistance force, so that the sliding block 7 does not move when the sliding block 7 pushes the pull rod 5 to make the abutting claw 4 abut against the column fixing inserted link 10.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the dust screen 2 is provided as a double-layer filter screen, so that the dust filtering effect is better by providing the double-layer filter screen, and the dust is effectively prevented from entering the inside of the fan body 1.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the dust screen 2 is installed in the impeller of the blower body 1, and can be disassembled through the dust screen 2, so that when the dust screen 2 is disassembled to be cleaned, the worker can clean the impeller inside the blower body 1, and after the dust is prevented from being accumulated for a long time, the impeller is corroded, the unbalance phenomenon occurs, and the normal operation of the centrifugal blower is ensured.

The utility model discloses a use method and advantage: this kind of environment-friendly centrifugal draught fan with function of making an uproar is making an uproar when the rolling, the working process as follows:

as shown in fig. 1, 2 and 3, firstly, a fixed inserting rod 10 is inserted into a fixed inserting slot 3, a sliding block 7 pushes a pull rod 5, the pull rod 5 pushes a rotating block 11 to slide in a limiting sliding slot 12 to drive a supporting claw 4 to buckle the fixed inserting rod 10, so that the dust screen 2 is quickly installed, the sliding block 7 is pushed back to enable the pull rod 5 to pull the rotating block 11 back, and the rotating block 11 slides in the limiting sliding slot 12 to drive the supporting claw 4 to tilt up, so that the dust screen 2 is quickly unlocked and disassembled, workers can conveniently disassemble and clean or maintain the dust screen 2, and the maintenance cleaning efficiency is improved;

can dismantle through dust screen 2, can dismantle clear to dust screen 2, make things convenient for the staff to clear up the impeller of 1 inside of fan body, prevent that the dust from piling up too long afterwards, the impeller is corroded, the unbalance phenomenon appears, guarantees centrifugal fan's normal operating.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an environment-friendly centrifugal draught fan with function of making an uproar is fallen, includes fan body (1) and dust screen (2), its characterized in that: the surface of the fan body (1) is provided with two fixed slots (3), the surface of the dust screen (2) is fixedly connected with two fixed inserting rods (10), and the fixed inserting rods (10) are movably inserted into the fixed slots (3);

fixed surface of fan body (1) is fixed block (6) that quantity is two, the inside sliding connection of fixed block (6) has slider (7), the surface difference fixedly connected with pull rod (5) and damping piece (9) of slider (7), the one end of pull rod (5) is rotated and is connected with commentaries on classics piece (11), the surface rotation of fan body (1) is connected with claw (4) that support that quantity is two, support claw (4) and fixed inserted bar (10) activity butt, spacing spout (12) have been seted up to the inside of supporting claw (4), change the inside of piece (11) sliding connection at spacing spout (12).

2. The environment-friendly centrifugal induced draft fan with the noise reduction function according to claim 1, wherein: the air outlet of the fan body (1) is provided with a silencer of the centrifugal fan.

3. The environment-friendly centrifugal induced draft fan with the noise reduction function according to claim 1, wherein: the inside of fixed block (6) has seted up spout (8), slider (7) are through spout (8) sliding connection in the inside of fixed block (6).

4. The environment-friendly centrifugal induced draft fan with the noise reduction function according to claim 3, wherein: the outer surface of the damping block (9) is attached to the inner side wall of the sliding groove (8).

5. The environment-friendly centrifugal induced draft fan with the noise reduction function according to claim 1, wherein: the dust screen (2) is a double-layer filter screen.

6. The environment-friendly centrifugal induced draft fan with the noise reduction function according to claim 1, wherein: the dust screen (2) is arranged at the impeller of the fan body (1).