Circular pendulum mixer

For a flooded flow measuring kettle a circular pendulum mixer is recommcaided for use instead of a conventional stirrer (Sect. 2.5, Fig. 2.39). 

The setup is largely comprised of a continuous-flow, compensating calorimeter which consists of a flooded measuring kettle housed in an intermediate thermostat, which is enveloped by a base thermostat. The base thermostat and the intermediate thermostat are filled with a thermostat liquid. The base thermostat, the intermediate thermostat and the flow measuring kettle are each provided with a mixer, baffles and temperature sensors. The mixer of the base and intermediate thermostats are classic stirrers, and the mixer in the flooded measuring kettle is a circular pendulum mixer. Its bearing is protected from contamination with the reaction mixture by corrugated metal bellows, which is joined to the cover of the shaft to form a seal. 

Fig. 2.39 Circular pendulum mixer top bearing of mixer, bottom design of mixer...

Since the power loss in the bearing of the circular pendulum mixer in the measuring kettle is guaranteed to remain imchanged during measurement and electric motors without armature retroaction, i.e. DC disk-armature motors are used, relationship (2.7) holds between the total motor power Pm2 and the mixing power psa- Therefore, the following expression results ... 

Temperature range (thermostat liquid silicon fluid) essentially the temperature range is determined by the boiling point respectively freezing point of the thermostat liquid Maximum frequency of circular pendulum mixer PID control system Maximum electric heating power Resolution... 

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