CN110925239B

CN110925239B - Automatic dust removal sweep-over type blade and axial flow fan

Info

Publication number: CN110925239B
Application number: CN201911256090.XA
Authority: CN
Inventors: 饶川
Original assignee: Pingxiang Nanfeng Fan Factory General Partnership
Current assignee: Pingxiang Nanfeng Fan Factory General Partnership
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-12-29
Anticipated expiration: 2039-12-10
Also published as: CN110925239A

Abstract

The invention relates to the technical field of axial-flow ventilators, and provides an automatic dust removal sweep-bent type blade, which comprises a blade root and a blade main body with a sweep angle, wherein a cavity is arranged in the blade root, a cleaning mechanism is arranged in the cavity, the cleaning mechanism comprises a motor, a conveying belt and a cleaning block, at least one belt wheel is connected to an output rotating shaft of the motor, one end of the conveying belt is connected with the belt wheel, the other end of the conveying belt is connected with the tip end part of the blade main body, the conveying belt is tensioned along the inner surface and the outer surface of the blade main body, and the cleaning block is. The dust removal swept-curved blade is applied to the axial flow fan, so that the surface of the swept-curved blade can be automatically cleaned and dedusted in the axial flow fan, and all attachments on the surface of the swept-curved blade can be cleaned.

Description

Automatic dust removal sweep-over type blade and axial flow fan

Technical Field

The invention relates to the technical field of axial flow fans, in particular to an automatic dust removal sweeping type blade and an axial flow fan.

Background

At present, the sweepback blades are widely applied to impeller machinery, and a large number of experimental researches and numerical calculations show that reasonable blade sweepback can change the radial component force of the acting force of the blades and airflow, control the pressure gradient distribution on the surfaces of the blades, reduce the flow loss and achieve the aim of improving the aerodynamic performance of the impeller machinery. The impeller with the sweepback blades is applied to a working environment with much dust, a large amount of dust is easily attached to the impeller, the ventilation effect is greatly influenced by the large amount of dust attached to the impeller, and the noise is increased. Due to the sweep angle of the curved blade, like a common blade, the attachment on the blade is automatically swept by the brush, the brush is easily blocked at the curved position, the attachment on the surface is cleaned by spraying water to the blade, and the attachment is easily retained at the curved position and is not convenient to clean.

Disclosure of Invention

The invention aims to provide an automatic dust removal sweeping type blade, which can automatically clean and remove dust on the surface of the sweeping type blade and clean attachments on the surface of a sweeping position.

The technical scheme includes that the automatic dust removal sweeping type blade comprises a blade root and a blade main body with a sweep angle, a cavity is arranged in the blade root, a cleaning mechanism is arranged in the cavity and comprises a motor, a conveying belt and a cleaning block, at least one belt wheel is connected to an output rotating shaft of the motor, one end of the conveying belt is connected with the belt wheel, the other end of the conveying belt is connected with the tip end of a blade of the blade main body, the conveying belt is tensioned along the inner surface and the outer surface of the blade main body, and the cleaning block is fixed on the conveying belt.

Compared with the prior art, the automatic dust removal sweeping type blade can drive the belt pulley to operate through the motor, so that the conveying belt drives the cleaning block to move on the inner surface and the outer surface of the blade body, and the surface of the sweeping type blade is automatically cleaned and dedusted.

Preferably, the tip end portion of the blade body is provided with a roller corresponding to the conveyor belt, the conveyor belt is wound around the corresponding roller, and the roller rotates with the operation of the connected conveyor belt. With this structure, the resistance to the belt moving on the inner and outer surfaces of the blade body is small, and particularly the blade tip end of the blade body hinders the belt.

Preferably, the inner and outer surfaces of the blade body are provided with a limiting groove corresponding to the position where the conveying belt is tensioned, and the conveying belt runs in the limiting groove and conveys the cleaning block. By adopting the structure, the conveying belt running in the limiting groove is ensured to strictly convey the cleaning blocks along the inner surface and the outer surface of the blade body, the cleaning of the inner surface and the outer surface of the blade body is ensured, and the influence of the conveying belt on the performance of the blade is also reduced.

Preferably, a communication hole is formed at a position where the blade root is connected with the blade body, and the conveying belt penetrates through the communication hole and is connected with the tip end part of the blade body. By adopting the structure, the connecting part of the blade root and the blade main body is closed except the communicating hole for the conveying belt to penetrate out, and when the blade runs, air is prevented from entering the cavity in the blade root to increase noise.

Preferably, the blade root is provided with a containing cavity for containing the cleaning block. By adopting the structure, when the blade runs, the cleaning block is positioned in the accommodating cavity at the blade root, so that the influence of the cleaning block on the performance of the blade is reduced.

The invention provides an axial flow fan, which can automatically clean and remove dust on the surface of a swept blade and clean attachments on the surface of the swept blade by applying the automatic dust removal swept blade.

The technical scheme of the invention is that the axial flow fan comprises a fan barrel, wherein an axial flow motor is arranged in the fan barrel, an output rotating shaft of the axial flow motor is connected with axial flow fan blades, and the axial flow fan blades are composed of the automatic dust removal sweeping type blades with the structure.

Compared with the prior art, the axial flow fan can automatically clean attachments on the inner surface and the outer surface of the blade through the cleaning mechanism in the automatic dust removal sweeping type blade, and can clean the attachments on the surface at the sweeping position.

Preferably, the wall of the fan barrel is further provided with a control box, the control box is respectively and electrically connected with the axial flow motor and the motors in all the automatic dust removal swept-curved blades and is respectively used for controlling the axial flow motor to be electrified, operated or stopped and controlling the motors in all the automatic dust removal swept-curved blades to be electrified, rotated forwards, rotated backwards or stopped. By adopting the structure, the axial flow fan applying the automatic dust removal sweeping type blade can automatically control the cleaning of the blade and the ventilation working state.

Preferably, a dust sensor is further arranged in the fan barrel, the control box is electrically connected with the dust sensor and used for acquiring dust concentration in the environment, and the control box controls the frequency of cleaning operation according to the dust concentration. By adopting the structure, the axial flow fan applying the automatic dust removal sweep-type blade is more intelligent.

Drawings

Fig. 1 is a schematic structural diagram of an automatic dust removal swept-curved blade of the invention.

Fig. 2 is a schematic structural diagram of the cleaning mechanism of the automatic dust removing sweeping type blade of the invention.

As shown in the figure: 1. the cleaning device comprises a blade root, 1-1 parts of a motor, 1-2 parts of a motor rotating shaft, 1-3 parts of a first belt wheel, 1-4 parts of a second belt wheel, 2 parts of a blade body, 3 parts of a first conveying belt, 4 parts of a second conveying belt, 5 parts of a cleaning block.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Further, when an expression such as "at least one" appears after a list of listed features, the entire listed feature is modified rather than modifying individual elements in the list.

As shown in fig. 1 and 2, the automatic dust-removing swept-curved blade of the present invention includes a blade root 1 and a blade body 2 with a sweep angle, wherein a cavity is arranged in the blade root 1, a cleaning mechanism is arranged in the cavity, and two communication holes are arranged at the connection part of the blade root 1 and the blade body 2. The cleaning mechanism comprises a motor 1-1, a motor rotating shaft 1-2, a first belt wheel 1-3, a second belt wheel 1-4, a first conveying belt 3, a second conveying belt 4 and a cleaning block 5, wherein the first belt wheel 1-3 and the second belt wheel 1-4 are fixedly connected to the motor rotating shaft 1-2, one end of the first conveying belt 3 and one end of the second conveying belt 4 are respectively connected to the first belt wheel 1-3 and the second belt wheel 1-4, the other end of the first conveying belt 3 and the other end of the second conveying belt 4 respectively penetrate through the communication hole to be connected to the tip end part of the blade main body 2, the first conveying belt 3 and the second conveying belt 4 are respectively tensioned along the inner surface and the outer surface of the blade main body 2, rollers (not shown) are respectively arranged at positions of the tip end part of the blade main body 2, which correspond to the first conveying belt 3 and the second conveying belt 4, the first conveying belt 3 and the second conveying belt 4 are respectively connected to corresponding rollers, and the cleaning block 5 is simultaneously connected to the first conveying belt 3 and the second conveying belt 4. Two limiting grooves (not shown) are arranged on the blade body 2 corresponding to the first conveying belt 3 and the second conveying belt 4, the end parts of the two limiting grooves are respectively communicated with the two communicating holes, and the initial position and the reset position of the cleaning block 5 are the positions where the blade root 1 is connected with the blade body 2. The blade root 1 can also be provided with an accommodating cavity for accommodating the cleaning block 5, and the accommodating cavity is the initial position and the reset position of the cleaning block 5. The first conveying belt 3 and the second conveying belt 4 are positioned in the limiting grooves on the surfaces of the blades, so that the influence on structural parameters of the blades is reduced, and the influence on the acoustic characteristics of the automatic dust removal sweeping-type blades is reduced; the cleaning block 5 is positioned in the accommodating cavity, so that the resistance of the blade in operation is reduced, and the influence on the pneumatic performance of the automatic dust removal sweeping type blade is reduced. The cleaning block 5 may be made of sponge or other flexible material.

The working principle of the dust removal sweep-type blade is as follows: the motor 1-1 drives the motor rotating shaft 1-2 to rotate forwards, the motor rotating shaft 1-2 drives the first belt pulley 1-3 and the second belt pulley 1-4 to rotate, so that the first conveying belt 3 and the second conveying belt 4 respectively rotate along with the rotation of the first belt pulley 1-3 and the second belt pulley 1-4 to drive the cleaning block 5 positioned on the inner surface of the blade to move from the initial position to the tip end part of the blade main body 2, and meanwhile, attachments on the inner surface of the blade are cleaned along with the movement of the cleaning block 5; the cleaning block 5 continues to move along with the first conveying belt 3 and the second conveying belt 4 after reaching the blade tip end part of the blade body 2, and moves on the outer surface of the blade to the part where the blade root 1 is connected with the blade body 2 after passing over the blade tip end, and meanwhile, attachments on the outer surface of the blade are cleaned along with the movement of the cleaning block 5; after the cleaning block 5 reaches the position, connected with the blade body 2, of the blade root 1 on the outer surface of the blade, the motor 1-1 drives the motor rotating shaft 1-2 to rotate reversely, the cleaning block 5 is driven to move reversely along with the first conveying belt 3 and the second conveying belt 4 to the position, connected with the blade root 1 and the blade body 2, of the inner surface of the blade, namely the initial position of the cleaning block 5, and the motor 1-1 stops running. The motor shaft 1-2 in fig. 2 may be passed through the motor 1-1, and the first belt pulley 1-3 and the second belt pulley 1-4 are respectively located on the motor shaft 1-2 at both sides of the motor 1-1, so that the cleaning mechanism can be made symmetrical in structure and convenient to install in the cavity of the blade root 1.

The dust removal swept-curved blade is applied to the axial flow fan, so that the surface of the swept-curved blade can be automatically cleaned and dedusted in the axial flow fan, and all attachments on the surface of the swept-curved blade can be cleaned. The axial flow fan applying the dust removal swept-curved blade comprises a fan barrel and an axial flow fan, wherein an output rotating shaft of the axial flow fan is connected with an impeller consisting of the dust removal swept-curved blade, a control box is further arranged on the barrel wall of the fan barrel, the control box is respectively and electrically connected with an axial flow motor and a motor in each dust removal swept-curved blade and is respectively used for controlling the axial flow motor to be electrified, operated or stopped, and the motor in each dust removal swept-curved blade is controlled to be electrified, rotated forwards, rotated backwards or stopped. A dust sensor can be further arranged in the fan barrel, the control box is electrically connected with the dust sensor to acquire the dust concentration in the environment, and the frequency of cleaning operation is set according to the dust concentration in the environment.

Claims

1. The utility model provides an automatic curved formula blade that sweeps that removes dust, includes the blade root and has the blade main part of glancing angle, its characterized in that, is provided with the cavity in the blade root, the cavity in be provided with clean mechanism, clean mechanism includes the motor, conveyer belt and clean piece, be connected with at least one band pulley in the output pivot of motor, the one end of conveyer belt is connected with the band pulley and the other end is connected with the most advanced portion of blade main part, the inside and outside surface tensioning of conveyer belt along blade main part, clean piece is fixed on the conveyer belt, the position department that corresponds the conveyer belt tensioning on blade main part's the inside and outside surface is provided with the spacing groove, the conveyer belt is in spacing inslot operation and is transported clean piece, the blade root.

2. The automated dusting sweepback blade of claim 1, wherein the blade tip end of the blade body is provided with rollers corresponding to the conveyor belt, the conveyor belt is wound around the corresponding rollers and the rollers rotate with the operation of the connected conveyor belt.

3. The automatic dust removal swept-curved blade of claim 1, wherein a communication hole is formed at a connecting portion of the blade root and the blade body, and the conveyor belt passes through the communication hole and is connected with a tip end portion of the blade body.

4. An axial flow fan, comprising a fan barrel, wherein an axial flow motor is arranged in the fan barrel, and an output rotating shaft of the axial flow motor is connected with an axial flow fan blade, characterized in that the axial flow fan blade consists of the automatic dust removal sweeping type blade in any one of claims 1 to 3.

5. The axial flow fan according to claim 4, wherein a control box is further disposed on the wall of the fan barrel, and the control box is electrically connected to the axial flow motor and the motors in all the automatic dust-removing sweeping blades respectively, and is used for controlling the axial flow motor to be powered on, operated or stopped, and controlling the motors in all the automatic dust-removing sweeping blades to be powered on, rotated forward, rotated backward or stopped.

6. The axial flow fan according to claim 5, wherein a dust sensor is further disposed in the fan barrel, the control box is electrically connected with the dust sensor for acquiring dust concentration in the environment, and the control box controls the frequency of cleaning operation according to the dust concentration.