External dust-proof water-proof breathing device and embedded dust-proof water-proof breathing device

• Main Authors: CAO BAOLIN, SHI LIZHI
• Format: Patent
• Language: Chinese; English
• Published: 18.01.2019
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The invention relates to an external dust-proof water-proof breathing device and an embedded dust-proof water-proof breathing device, and belongs to the technical field of air exchange and breathing devices inside and outside equipment. The technical problem to be solved is to provide a dust-proof water-proof breathing device with simple structure and good filtering effect, which is divided into an external type and an embedded type. The adopted technical scheme is as follows: the invention relates to an external dust-proof water-proof breathing device, wherein a first shell is in a barrel shape with a threaded hole at the top, a first filtering liquid is filled in the first shell, a first end cover is connected with the threaded hole at the top of the first shell through threads, an air inlet hole and an air outlet hole are formed in the first end cover, a first air inlet pipe is positioned inside the first shell, the upper end of the first air inlet pipe is fixed at the bottom of thefirst end cover, a first