Double-channel dust-proof vent plug

• Main Authors: CAO BAOLIN, HAO BIN
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2019
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a double-channel dust-proof vent plug, belongs to the field of vent plugs and aims to solve the technical problem by providing the double-channel dust-proof vent plug, which has an intake channel and an exhaust channel that are mutually independent, reduces the exhaust pressure and prevents outside dust from entering equipment. The following technical solution is adopted tosolve the technical problem: the double-channel dust-proof vent plug comprises a screwed joint body, wherein a stepped gas port of which the upper part is wide and the lower part is narrow is formedinside the screwed joint body from top to bottom; an intake flanged base is arranged in the stepped gas port at the upper part; an exhaust plate is arranged above the intake flanged base; a filter screen and a cotton filter are arranged between the exhaust plate and the intake flanged base; the intake flanged base comprises a flange plate and a barrel; a plurality of air inlets are formed in the flange plate; a movable ste