Injection head of polyurethane foam insulation pipe

The utility model discloses an injection head of a polyurethane foam heat preservation pipe. The injection head of the polyurethane foam heat preservation pipe is composed of fan blades, an air inletpipe, a component A feeding pipe, a component B feeding pipe, a mixing pipe, an injection pipe and a nozzle. The injection head has the technical effects that the air inlet pipe device is additionallyarranged at one end of the injection head, direct-current air is converted into eddy current through the fan blades in the air inlet pipe, materials are fully mixed under the action of centrifugal force of the air flow and the materials, the defect rate is reduced, and polyurethane foam with excellent performance is produced. 本实用新型公开了一种聚氨酯泡沫保温管注射头，所述聚氨酯泡沫保温管注射头由风叶、进风管、A组分进料管、B组分进料管、混合管、注射管和喷嘴组成。本实用新型的技术效果是：在注射头一端增加进风管装置，通过进风管中的风叶将直流气体转变为涡流，在气流和物料本身离心力的作用下，使物料充分混合，降低缺陷率，生产出性能优良的聚氨酯泡沫。