Creating and adjustment of the 3D model of the centrifugal juicer with ball-type autobalancer

Abstract

In the process of work of electric centrifugal juicers (juicers) with the cylindrical sieve the pulp is distributed non-uniformly on a sieve which causing a significant imbalance and vibration of machine case.

To balance these juicers on the go in the operation the authors propose their modernization which consists in replacing the standard platform for mounting the sieve by platform combined with ball auto-balancer.

In order to study the process of balancing by auto-balancer of juicer’s cylindrical sieve created its 3D model with using the CAD system SolidWorks and its module Cosmos Motion. The simulation was performed in a technique that can be adopted as the standard for modeling process-balancing in rotor systems. It includes the steps of:

1) creation of models of details of a juicer in SolidWorks;

2) union of details in assembly;

3) kinematic and power processing of assembly by the Cosmos Motion module;

4) choice of criteria of quality of operation of the auto-balancer and juicer (the value of the module of residual acceleration of the case, time of onset of auto-balancing etc.);

5) adjustment of the model (the values of its parameters are selected in maximum accordance with the real machine);

6) test of the model of elementary tasks, the results of which are known or can be easily interpreted.

Proposed an approach to the modeling ball’s movement on the auto-balancer’s treadmill and viscous resistance forces acting on it, which provides high-speed calculations.

The model of a juicer created by the offered technique is efficient and provides high speed of calculations. Its key parameters correspond to a natural juicer with the ball-type auto-balancer. By means of the created model it is possible to make fully - factorial and multiple-factorial experiments, in particular – with 2-levels, 3-levels, for search of optimum values of parameters of a juicer with the auto-balancer.