| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to water supply system filter element cleaning control means. Proposed device consists of control gadget composed by signal normalisers, comparator, power supply, annunciator incorporated with microcontroller and output signal amplifier. Note here that ultrasound radiator is used for filter element cleaning. This device is operated by the head in water supply circuit. Water moves from inlet to outlet and from inlet to discharge side. Note here that said control device outputs valve servo drive close signal at increase in pressure at water supply line inlet by preset amount when for filtering and servo drive open signal for flushing purposes. Besides, it can activate the ultrasound radiator and, at filter element cleaning completion, it outputs valve servo drive open signal to discharge filter precipitate. When pressure at water supply line inlet equals that at its outlet, this control device closes the valves for flushing mode and opens the valves for filtering.EFFECT: automatic control over filter flushing nu ultrasound.1 dwg |
