PUMP CORE DEVICE, UREA PUMP AND SELECTIVE CATALYTIC REDUCTION SYSTEM

• Main Authors: HAN, Fengtao, ZHANG, Biao, ZHAI, Hongqiang, NIU, Jinghong, LI, Bo, FANG, Wu
• Format: Patent
• Language: Chinese; English; French
• Published: 18.04.2024
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

A pump core device (1), a urea pump and a selective catalytic reduction system. The pump core device (1) comprises: an integrated cavity seat (10) comprising a liquid inlet pipeline (10a) and a liquid outlet pipeline (10b); and a delivery pump component (11) arranged in the integrated cavity seat (10) and comprising a delivery liquid inlet end (11a) in communication with the liquid inlet pipeline (10a) and a delivery liquid outlet end (11b) in communication with the liquid outlet pipeline (10b). The pump core device (1) further comprises a backflow component (13) arranged in the integrated cavity seat (10) and comprising a backflow liquid inlet end (13a) and a backflow liquid outlet end (13b). The backflow liquid inlet end (13a) is in communication with the liquid outlet pipeline (10b), and the backflow liquid outlet end (13b) is in communication with the liquid inlet pipeline (10a), such that a solution output from the delivery liquid outlet end (11b) can flow back to the delivery liquid inlet end (11a). L'i