Sink, Washine machine and dishwasher drainage prob

Kitchen sink, dishwasher and washing machine drainage seem to be connected, and not only is the sink extremely slow to drain despite using de-blocker, but the water level rises when the washing machine runs. all the water filled in dishwasher. Once I turn on the dishwasher the water go out eventually. last night i set the timer on washing machine. When i woke up the dishwasher was over flow and the water was on kitchen floor. i managed to dry the water on the floor and turned on the dishwasher so the water can go out. Any help would be very much appreciated.