A more secure and efficient material conveying fan
Release date:
2021-10-07
When the fan draws air in from the outside, airflow tends to form vortices in the intake duct. These vortices easily accumulate in the curved sections inside the fan, reducing the fan’s exhaust efficiency. Therefore, there is a need for a more practical material-handling fan.
The blower, also known as a centrifugal fan, is a driven fluid machine that relies on input mechanical energy to increase gas pressure and convey gases. Centrifugal fans are widely used in ventilation, dust removal, and cooling applications in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings. When the fan draws air in from the outside, airflow tends to form vortices in the intake duct, and these vortices easily accumulate in the curved sections inside the fan, leading to reduced fan efficiency in exhaust. Therefore, there is a need for a more practical solution. Material conveying fan 。
Technical Highlights: Addressing the shortcomings of existing technologies, the technical personnel have developed a highly efficient and safe material-conveying fan that effectively solves the problem of vortex formation inside the intake pipe during fan suction, which previously led to low exhaust efficiency. To achieve the above objective, the following technical solution is adopted: A material-conveying fan comprising a fan body, with a support frame fixedly connected to the lower surface of the fan body. The bottom end of the support frame is fixedly connected to a baseplate. The front surface of the baseplate is equipped with a sliding groove, and the inner top wall of the sliding groove features a through-hole that communicates with the upper part of the baseplate. A counterweight is fixedly attached to the bottom of a support rod. An air outlet pipe is fixedly connected to the top of the fan body, and an air inlet pipe is fixedly attached to the right side of the fan body. Inside the air inlet pipe, there are respectively a first annular groove and a second annular groove. Two positioning rings are hinged on the sides away from the inner wall of the air inlet pipe to a wind-blocking plate. The inner side of the wind-blocking plate is provided with a limiting groove, and near the inner wall of the air inlet pipe, the limiting groove has a limiting opening. The first annular groove and the second annular groove each accommodate a first rotating ring and a second rotating ring, respectively, which slide freely inside them. A gear is fixedly sleeved onto the surface of a rotating rod; the two sides of the gear mesh with the opposite surfaces of the first rotating ring and the second rotating ring, respectively. Connecting rods are fixedly attached to the inner walls of the first rotating ring and the second rotating ring. One end of each connecting rod, located inside the air inlet pipe, is fixedly connected to a rotating plate. On the side of the rotating plate away from the connecting rod, a limiting rod is fixedly attached. At the end of the limiting rod away from the rotating plate, a limiting ball is fixedly attached, fitting snugly within the limiting groove. There are two counterweights, each with its lower surface positioned on either side of the upper surface of the baseplate. The interiors of both the air inlet pipe and the air outlet pipe are connected to the interior of the fan body. In total, there are twelve rotating plates and wind-blocking plates, arranged in six pairs, with each pair of rotating plates located on the left side of one of the two positioning rings. The diameter of the limiting ball matches the width of the inner wall of the limiting groove, and the width of the limiting groove is twice that of the limiting opening.
The beneficial effects of this new material-conveying fan are as follows: 1. When the intake pipe draws air in, the guide vanes serve to alter the direction of the airflow; the gears ensure that the first and second rotating rings rotate in opposite directions; and the limiting balls, moving within the limiting grooves, adjust the deviation of the guide vanes, making it easier to regulate the airflow direction with the two sets of guide vanes. This prevents the formation of vortices caused by the airflow and thereby enhances the blowing efficiency of the fan body itself. 2. The slider moves within the slide groove, facilitating the installation of the counterweight and the base plate, thus improving the stability of the fan body.
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