Extruder cylinder external cooling circulation system

An external cooling circulation system of an extruder barrel comprises the extruder barrel, a water channel pipeline assembly and flanges, the water channel pipeline assembly is connected with the outer side of the extruder barrel, and the flanges are connected with the two ends of the extruder barrel. The water channel pipeline assembly comprises a water channel pipeline, a cover plate and a screw. Compared with the prior art, due to the fact that the water channel pipeline assembly is additionally arranged, external water can be directly pumped into the pipeline through the pump, the purpose of heat exchange is achieved, and disassembly and waste of the machine barrel are reduced. 一种挤出机筒外加冷却循环系统，包括：机筒、水道管路组件和法兰，水道管路组件与机筒外侧连接，法兰与机筒两端连接。其中，水道管路组件包括：水道管路、盖板和螺丝。本实用新型与传统技术相比，通过增设水道管路组件，能够使其外来水通过泵浦直接打入管路内，依此达到热交换的目的，从而减少机筒的拆解以及废弃。