CN-224228943-U - Streamline industrial fan blade

Abstract

The utility model relates to the technical field of industrial fan blades, in particular to a streamline industrial fan blade which comprises a main shaft, wherein three connecting shafts distributed in a circumferential array are fixedly connected to the outer wall of the main shaft, mounting plates are fixedly connected to the other ends of the three connecting shafts, blade bodies are fixedly connected to the other ends of the three mounting plates, the blade bodies are of three-dimensional twisted structures, a dense protective layer is formed on the surfaces of the blade bodies by nano ceramic coatings, so that dust, moisture and corrosive gas can be effectively prevented from corroding a blade body base material, the problem that a traditional fan blade is easy to rust is solved, airflow forms a laminar boundary layer on the surfaces of the blade bodies, turbulence loss is reduced, friction resistance is reduced, energy consumption of a motor is further reduced, vortex noise is reduced, aluminum magnesium metal foam is filled in a hollow cavity, torsional rigidity of the blade bodies is obviously improved compared with that of pure hollow structures, and twisting deformation under high-speed rotation or complex load is effectively inhibited.

Inventors

• LIU FENG

Assignees

• 江苏凡斯智能科技有限公司

Dates

Publication Date

20260512

Application Date

20250605

Claims (6)

1. 1. The streamline industrial fan blade comprises a main shaft (1) and is characterized in that three connecting shafts (2) distributed in a circumferential array are fixedly connected to the outer wall of the main shaft (1), mounting plates (3) are fixedly connected to the other ends of the three connecting shafts (2), and fan blade bodies (4) are fixedly connected to the other ends of the three mounting plates (3); The fan blade body (4) is of a three-dimensional twisted structure, one end, close to the mounting plate (3), of the fan blade body (4) is provided with a hollow cavity (9), one side of the fan blade body (4) is provided with a flat part (5), the other side of the fan blade body (4) is provided with a curved part (6), a bulge part (7) is arranged between the flat part (5) and the curved part (6), and the flat part (5) of the fan blade body (4) is in a downward bending shape; A metal foam (8) is arranged in the hollow cavity (9); the outer wall of the fan blade body (4) is sprayed with a nano ceramic coating (10).
2. 2. The streamline-shaped industrial fan blade according to claim 1, wherein the blade body (4) is made of glass fiber reinforced polypropylene.
3. 3. A streamlined industrial fan blade according to claim 1, wherein the metal foam (8) is an aluminum-magnesium alloy material.
4. 4. The streamline industrial fan blade according to claim 1, wherein the nano ceramic coating (10) is formed by compounding aluminum oxide, zirconium oxide and silicon carbide, the surface roughness Ra of the coating is less than or equal to 0.5 mu m, and the hardness is more than or equal to 1200HV.
5. 5. The streamline industrial fan blade according to claim 1, wherein the metal foam (8) is filled in the hollow cavity (9) through a liquid metal foaming process, and forms a metallurgical bonding interface with the inner wall of the hollow cavity (9).
6. 6. The streamline-shaped industrial fan blade according to claim 1, wherein two reinforcing ribs (11) are fixedly connected between the mounting plate (3) and the connecting shaft (2).

Description

Streamline industrial fan blade Technical Field The utility model relates to the technical field of industrial fan blades, and particularly discloses a streamline industrial fan blade. Background The industrial fan blade is used as a core component of an industrial ventilation and heat dissipation system, is widely applied to the scenes of factory building environment regulation, large-scale equipment cooling, storage air circulation and the like, and the performance of the industrial fan blade directly influences ventilation efficiency, energy consumption level and equipment operation reliability. The fan blade drives air to flow through the three-dimensional twisted structure, large-flow air supply, low-noise operation and long-term stable operation are required to be realized in high-speed rotation, and therefore, severe requirements are provided for the stability of the fan blade in use. However, the existing industrial fan blade has the obvious technical defects that firstly, surface protection measures are absent, the conventional fan blade is easy to rust and erode when being exposed to dust, moisture, corrosive gas and other environments for a long time, secondly, the conventional fan blade is mainly of a simple arc or a straight section, has high surface roughness, has high friction resistance when air flows through, not only increases the energy consumption of a motor, but also is easy to generate high-frequency noise due to vortex, thirdly, most of fan blades are designed into a hollow cavity structure for reducing the weight, and an effective strengthening means is generally lacking, so that the torsional rigidity of the blade is insufficient, the blade is easy to twist and deform under high-speed rotation or complex load, the stability of air supply is influenced, the vibration is aggravated, and the application of the industrial fan in a high-load scene is severely restricted. Accordingly, there is a need for a streamlined industrial fan blade that addresses the above-described problems. Disclosure of utility model The utility model provides a streamline industrial fan blade, which effectively prevents the blade body from being rusted through a surface protection design, reduces wind resistance through optimizing surface roughness, further reduces energy consumption of a motor and noise, and simultaneously enhances torsional rigidity of the blade body through a structure, prevents distortion and deformation and remarkably improves air supply stability. The utility model is realized in such a way that the streamline industrial fan blade comprises a main shaft, wherein the outer wall of the main shaft is fixedly connected with three connecting shafts distributed in a circumferential array, the other ends of the three connecting shafts are fixedly connected with mounting plates, and the other ends of the three mounting plates are fixedly connected with fan blade bodies; The fan blade body is of a three-dimensional twisted structure, a hollow cavity is formed in one end, close to the mounting plate, of the fan blade body, one side of the fan blade body is a flat part, the other side of the fan blade body is a curved surface part, a bulge part is arranged between the flat part and the curved surface part, and the flat part of the fan blade body is bent downwards; a metal foam is arranged in the hollow cavity; the outer wall of the fan blade body is sprayed with a nano ceramic coating. As a preferable streamline industrial fan blade, the blade body is made of glass fiber reinforced polypropylene. Preferably, the streamline industrial fan blade is made of aluminum magnesium alloy material. As the streamline industrial fan blade, the nano ceramic coating is preferably formed by compounding aluminum oxide, zirconium oxide and silicon carbide, the surface roughness Ra of the coating is less than or equal to 0.5 mu m, and the hardness is more than or equal to 1200HV. Preferably, the metal foam is filled in the hollow cavity through a liquid metal foaming process, and forms a metallurgical bonding interface with the inner wall of the hollow cavity. As a preferable streamline industrial fan blade of the utility model, two reinforcing ribs are fixedly connected between the mounting plate and the connecting shaft. The beneficial effects of the utility model are as follows: 1. The nano ceramic coating forms a compact protective layer on the surface of the fan blade body, so that the erosion of dust, moisture and corrosive gas to the base material of the fan blade body can be effectively prevented, and the problem that the traditional fan blade is easy to rust is solved. 2. The nano ceramic coating has small surface roughness, so that the airflow forms a laminar boundary layer on the surface of the fan blade body, the turbulence loss is reduced, the friction resistance is reduced, and then the energy consumption and the vortex noise are reduced. 3. The aluminum magnesium metal foam is filled in the hollow cavi