GRAVITY MIXERS WITH VIBRATION ACTIVATOR IN CONSTRUCTION ENGINEERING

Abstract

Vibration processes and corresponding machinery and equipment are widely used in construction, production of construction materials and other industries. Compaction, crushing, separation, piling, dosing and transportation of bulk materials are just several processes where it is expedient to use vibration. The article presents original designs of gravity (drum) mixers with vibration activators placed inside the mixing chamber. A vibration activator is installed in "dead" zones located along the geometrical axis of the mixing chamber where intensity of convective mixing is low. Methods of design of balanced eccentric vibration activators of precessing type are considered. Results of production tests with regard to the industrial design of the gravity vibration mixer are presented. Considerable attention is paid to measurement of the vibration level reflecting the quality of dynamic balancing of the vibration activator. Vibrational impact on the environment and maintenance personnel amounts to ~ 5 m/s2, corresponding to standard values for processing equipment as per GOST 22061-76.

Keywords

• Gravity mixer
• vibration activator
• design methods
• dynamic balancing