Impeller shaft disc for fan assembly

Abstract

The impeller shaft disc is composed of a shaft disc bottom plate, a shaft disc pressing plate and a shaft sleeve which are machined and assembled in a split mode, the shaft disc bottom plate and the shaft disc pressing plate are provided with spliced positioning steps which are used for wrapping an inner hole of a bottom plate of an impeller, and the structural strength of the impeller is improved; the separated spliced shaft sleeve and the connecting shaft are fixedly assembled, the transition fit length of the center hole of the shaft disc bottom plate and the connecting shaft is reduced, and the three parts are matched with a flat groove in the connecting shaft through key grooves formed in the three parts respectively to transmit torque. By applying the impeller shaft disc, the machining difficulty for ensuring the precision of the shaft disc is reduced, the torque transmission integrity of the assembled impeller shaft disc is ensured while the structural strength of an impeller is improved, and the integral performance of a fan is improved; and meanwhile, the convenience and rapidness of mounting and dismounting of the impeller shaft disc are improved, and manpower and working time cost can be saved.

Description

technical field [0001] The invention relates to an assembly component of a fan, in particular to an impeller shaft disk for improving the fixed assembly performance of an impeller and a connecting shaft. Background technique [0002] Fan products are widely used in all walks of life. With the expansion of production or user scale, new requirements are constantly put forward for the performance and use structure of fans. In the fan, the fan blade and the shaft are the two main parts of the transmission parts. The cooperation mainly consists of the axial and radial fixed cooperation between the impeller shaft disk and the connecting shaft. The firmness of the two is related to the safety of the fan operation. , It is also related to the convenience of disassembly when the fan is overhauled. Among them, the impeller, as a rotating part, is easy to damage or accumulate dirt, so it needs to be disassembled and assembled, and the operation frequency is high. [0003] The traditi...

AI Technical Summary

Problems solved by technology

[0003] The traditional impeller is usually assembled with an integrally formed casting shaft disk. The impeller and the connecting shaft are connected in a humid, oily, dusty environment, usually prone to rust, oily dirt, dust, etc., resulting in impeller shaft disk and connection. The excess gap between the shafts is blocked, which reduces the energy efficiency of the fan transmission, and also makes it more difficult to disassemble the impeller during maintenance and overhaul. Even if tough measures are adopted, the impeller will be deformed and the removal hole will be damaged, which will affect the overall performance of the fan.

Images