Safe filtering circulating system for 3D printing equipment

• Main Authors: ZHANG ZHIYONG, LI MIFENG, LIU XINYAN, MIAO JUNJIE
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The safe filtering circulating system for the 3D printing equipment comprises an upper frame body, a middle frame body, a lower frame body and a slag discharging tank which are sequentially connected from top to bottom, the slag discharging tank is connected with the bottom of the lower frame body through a first manual butterfly valve, an air inlet pipe is arranged on the outer side wall of the lower frame body, an inert gas inlet is further formed in the air inlet pipe, and an inert gas outlet is further formed in the inert gas inlet. Filter elements are arranged in the middle frame body and the lower frame body, a second manual butterfly valve, a circulating fan and an air outlet pipe are sequentially connected to the top of the upper frame body, a circulating system safety relief valve is further arranged at the top of the upper frame body, and it is guaranteed that the pressure in a cavity of the filtering circulating system is within a set range; an air inlet pressure sensor and an air outlet pressure s