The history of the development of respirators

My country began to design and manufacture oxygen gas masks by itself in the 1950s. At that time, in order to cooperate with the atomic bomb test, the General Staff of the People's Liberation Army assigned the task of developing gas masks to the Beijing Institute of Chemical Defense Forces. The prototype provided at that time was a gas mask made in the former Soviet Union. The Beijing Institute of Chemical Forces developed my country's first generation of oxygen gas masks in 1959, which provided an effective guarantee for my country's nuclear tests. Later, the Shanxi Xinhua Chemical Plant, the first military gas mask production plant of the General Staff in Taiyuan, Shanxi, was established, which mainly produces various types of military gas mask canisters.

At the end of the 1970s, my country emerged from the catastrophe of the "Cultural Revolution" and the national economy began to fully recover. At that time, China was pursuing a policy of foreign reform and development, and increasing international exchanges. Many advanced air respirators have been introduced into our country's fire protection, coal mine, and petrochemical systems. The air respirator at that time was a negative pressure air respirator (the pressure in the mask was lower than the ambient pressure). The gas cylinder is a steel gas cylinder with a bulk density ratio of 1.1-1.2 and an inflation pressure of 20MPa.

In 1982, the Shanghai Fire Science Research Institute of the Ministry of Public Security cooperated with the Shanghai Diving Equipment Factory to successfully develop my country's first generation HZK-7 fire air respirator based on Japanese and British products.