EXPERIMENTAL INVESTIGATION OF PARAMETERS OF THE DRIVE OF THE VIBRATION MACHINE FOR WASHING AND CLEANING BY IMMEDIATE PULSATING FLUID OF LIQUID FLUID

Abstract

Experimental stands of vibrating machines for cleaning and washing have been developed. An original membrane sensor and an electronic oscilloscope were used to measure the pulsating pressure of the jet. For the washing process, a method was used to create a gas-liquid pulsating jet of liquid in the pulsation chamber of the vibrating machine by oscillating the elastic membrane with disks. To increase the pressure of the jet during the cleaning process in the vibrating machine, it was proposed to connect the pulsation chamber and the cleaning tank with a non-return valve of the membrane type. To confirm the nature of the physical process of the mechanism of mechanical interaction of the liquid jet with contamination during washing, comparative studies of different washing methods were conducted; ultrasonic, jet and jet-pulsating gas-liquid washing. As a result of experimental studies it was found that the use of a diaphragm check valve in the drive of a vibrating cleaning machine allows to increase the maximum pressure of the immersed pulsating fluid jet by 0.045 MPa at oscillation frequencies from 14 to 18 Hz, which allows to increase productivity. It is established that the rational range of oscillation frequencies of the vibrating drive of the machine is in the range from 14 Hz to 16 Hz and it is recommended to use the oscillation amplitude of the vibrating drive 2 mm at a ratio of nozzle diameter to chamber diameter 1:10. Studies of model contamination washing confirmed the main theoretical assumptions on the mechanical nature of the interaction of detergent with contamination and showed the effectiveness of the method of washing with cavitation bubbles obtained by vibrating washing machine and the effectiveness of pulsating jet cleaning of solid particles or metals.