Central tube set, spiral wound reverse osmosis membrane component, and reverse osmosis water purifier

摘要

Disclosed is a central tube set. The central tube set includes: a permeate tube, a peripheral wall of the permeate tube being arranged with a pure water influx hole communicating with an internal channel of the permeate tube; and a plurality of wastewater tubes arranged at intervals. The wastewater tubes are arranged around the permeate tube, a peripheral wall of each wastewater tube is arranged with a wastewater influx hole communicating with an internal channel of each wastewater tube. The plurality of the wastewater tubes and the permeate tube are arranged at intervals, to form a receiving space between each wastewater tube and the permeate tube, for receiving a portion of the reverse osmosis membrane sheet set which is extending into the central tube set. The present application further provides a spiral wound reverse osmosis membrane component and a reverse osmosis water purifier.