Pressure-equalizing scavenging air valve device of normal-pressure closed ring main unit

The utility model discloses a pressure-equalizing scavenging air valve device of a normal-pressure closed ring main unit in the field of ring main units, which comprises a valve main body, a main air passage is arranged in the middle of the valve main body, the front part of the valve main body is connected with an air tank through a fixing structure, a scavenging air valve cover is arranged at the rear part of the valve main body, and the main air passage is communicated with the scavenging air valve cover and the air tank. After the valve body and the air box are installed through the front fixing structure, the air box and the scavenging air valve cover are communicated through the main air channel, so that external air can enter the air box through the scavenging air valve cover and the main air channel, pressure balance is achieved, and the air in the air box can be clean and free of dust. 本实用新型公开了环网柜领域内的一种常压密闭环网柜的均压换气阀装置，包括阀主体，阀主体中部开设有主气道，阀主体前部经固定结构与气箱连连接，阀主体的后部设置有换气阀盖，主气道连通换气阀盖和气箱。阀主体通过前固定结构与气箱安装后，主气道将