The main circuit of traditional relay type altar washing machine

The jar washing machine is a small equipment used to clean commonly used jars such as wine jars, soy sauce jars, dried radish jars, and pickle jars.
(1) The traditional relay control circuit
    circuit is as shown in the figure. In the figure, the motor Mi is responsible for the transmission of the conveyor belt. After the travel switch is closed, Mi stops
. The motors M2 and M3 delay forward and reverse rotation to clean the altar. The motor M4 is responsible for the water supply during the cleaning process; after a
process is completed, Mi Request forced start and open the travel switch .