Gas protection device for high-precision automatic weighing equipment

• Main Authors: HAN FANGMING, DING JIANJIAN, LU YANG, ZHANG JIAHUI, ZHANG HOUDUN, ZHU XIANGYU
• Format: Patent
• Language: Chinese; English
• Published: 03.04.2020
• Subjects: MEASURING; PHYSICS; TESTING; WEIGHING

The invention provides a gas protection device for high-precision automatic weighing equipment. The device comprises an anti-escape assembly and a dustproof assembly. The anti-escape assembly comprises an air barrier blowback coil pipe, the air barrier blowback coil pipe is installed in a sealing cover, the air barrier blowback coil pipe is located on the upper side of a weighing container of theweighing equipment, a plurality of air spraying holes are formed in the bottom of the air barrier blowback coil pipe, and the air barrier blowback coil pipe is communicated with an external positive pressure air source; the dustproof assembly comprises a blowback sleeve; the blowback sleeve is fixed outside the sealing cover; one end of a transmission shaft of the weighing equipment is connected with the weighing mechanism; the other end of the transmission shaft penetrates through an inner hole of the blowback sleeve and a shaft hole of the sealing cover and is fixedly connected with a weighing container of the weigh