Multi-layer combined impeller

Abstract

The invention discloses a multi-layer combined impeller, which belongs to the technical field of powder grader impellers and comprises a plurality of first impeller frameworks and a second impeller framework. The plurality of first impeller frameworks are sequentially connected from top to bottom; the lowermost first impeller framework is connected with the second impeller framework; the top end of the uppermost first impeller framework is connected with an impeller labyrinth disc; the lower end of the second impeller framework is connected with a lower blocking disc; and the first impeller framework and the second impeller framework are each provided with a plurality of inserting grooves in the circumferential direction, and blades are inserted into the inserting grooves. Diversity of blade materials is achieved, and the abrasion resistance of the blade is improved; meanwhile, the problem that the height of the impeller is limited due to the fact that the length of the new material impeller is limited is solved, and the application range is wide.

Description

technical field [0001] The invention relates to a multi-layer combined impeller, which belongs to the technical field of air classifier impellers. Background technique [0002] Airflow classifiers are often used in powder dry classification processing. The key component that affects the classification accuracy of the air classifier is the classification impeller. When working, the material forms a material layer on the outside of the impeller with the rotating airflow, and the fine material will enter the inside of the classifying impeller through the gap between the blades of the classifying impeller, while the large material will be blocked outside by the blades. [0003] At present, the grading impellers in the prior art have the following problems in actual production: [0004] 1. During the process of materials passing through the classifying impeller, due to the frequent friction between the materials and the blades, the blades will wear out after a period of use. T...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a multi-layer combined impeller for the above deficiencies, which not only realizes the diversity of blade materials, but also improves the wear resistance of the blade; at the same time, it solves the impeller height limitation caused by the limitation of the impeller length of the new material. limited problems, has the advantage of a wide range of applications

Images