The invention relates to a bi-component rubber-mixing
machine and a closed-
loop control method for rubber mixing thereof. The bi-component rubber-mixing
machine comprises a
raw material barrel for filling rubber, a
raw material barrel for filling a curing agent, an
electrical control cabinet and a rubber-mixing
pipe. The bi-component rubber-mixing
machine is characterized by comprising two sets of primary
booster pump groups, two secondary adjustable quantitative delivery pumps, a flow meter and a controller, wherein the two sets of primary
booster pump groups are respectively connected with the rubber
raw material barrel and the curing agent raw material barrel in a matching mode; the flow meter is used for monitoring the delivery pumps and sending signals to the controller; and the controller is used for collecting the signals sent by the flow meter, sending the signals to a
frequency modulation motor of a secondary pump and feeding the signals back for controlling the rotary speed of the secondary pump. Finally, rubber is mixed statically through a rubber-mixing
pipe. With simple structure, the bi-component rubber-mixing machine is easy to operate and runs closely in a pipeline without polluting the environment. The controller is used for receiving the signals sent by the flow meter and feeding the signals back for controlling the rotary speed of the delivery pumps and a bolt pump so as to control the error range of the mixing rate of the rubber to the curing agent to be smaller than plus / minus 0.5 percent and meet the rubber-mixing requirement for accurate
rate control. The invention can ensure the purified use of the rubber and the curing agent and is beneficial to popularization and application.