In order to reduce the energy consumption of the twin roll press washer and improve the system efficiency, the basic application and use characteristics of the industrial closed pump in the twin roll press washer were explained from the perspective of operating conditions, and the existing circuit was analyzed. The analysis results show that it is possible to make up for the shortcomings of the original circuit design by adding external check valves and optimizing the circuit design, then the system efficiency can be improved. Through the development of environmentally friendly industrial closed pump energysaving technology, the system efficiency of the industrial closed pump in the twin roll press washer has been improved.