РЕЗУЛЬТАТЫ ИССЛЕДОВАНИЯ ЭЖЕКТОРНЫХ ПНЕВМОПИСТОЛЕТОВ ДЛЯ ПРИМЕНЕНИЯ ПРИ КОНСЕРВАЦИИ СЕЛЬХОЗМАШИН

Abstract

Ejector pneumatic pistols such as the GAV-167 and Voylet PS-5 used for the application of anticorrosive materials with large fillers. Pneumatic pistols have a receiving chamber for material input, an ejector with an air nozzle, a mixing chamber and a spray nozzle. When compressed air supplied through the ejector, a vacuum created in the receiving chamber. The research found that the vacuum pressure in the receiving chamber increased with an increase in the spray pressure, the size of the spray nozzle and a decrease in the length of the receiving chamber. The process of spraying technical liquids with a conditional viscosity from 11 to 80 seconds according to the VZ-4 viscometer has studied. The low quality of liquid spraying of the GAV-167 pneumatic pistol was noted. The liquid consumption when sprayed with a Voylet PS-5 pneumatic pistol depended on the length of the receiving chamber. With an increase in the length of the chamber from the minimum to the maximum, the consumption increased by 2 times. It proposed to set the maximum length of the receiving chamber for spraying low-viscosity material. To spray viscous material, it is necessary to set the minimum length of the chamber. Observations showed that the degree of dispersion of the material was higher at the minimum length of the receiving chamber. The Voylet PS-5 pneumatic pistol has upgraded to force the supply of material through a hose from a pressure tank. A flexible nozzle and extension have developed for applying anticorrosive material to hard-to-reach surfaces of machines.