| 摘要 |
<p>A serpentine track is used to suspend a moving distribution head which has its own drive motor and drive pulley riding on the conductive rail. The rail has a number of insulating bars spaced apart so that the head is controlled to stop above each individual vessel. The liquid is dispensed through a small bore, non drip pipe in drops when a solenoid control valve is de-energised and the feed to the dispenser is from a reservoir using a pump. Relay logic and a timing pulse generator are used to provide programmed orders to the motor and solenoid.</p> |
