Air oxygen content measuring and calculating device for underground coal mine

Abstract

The invention discloses an air oxygen content measuring and calculating device for an underground coal mine. The air oxygen content measuring and calculating device for the underground coal mine comprises a base, a handle and fixing blocks, the handle is fixedly connected to the lower end of the base, containing grooves are formed in the inner surfaces of the two sides of the base, first springs are fixedly connected to the inner surfaces of the containing grooves, connecting blocks are arranged on the outer sides of the first springs, protective blocks are fixedly connected to the outer sidesof the connecting blocks, the fixing blocks are arranged on the outer surfaces of the connecting blocks, first sliding grooves are formed in the inner surfaces of the protective blocks, second springs are arranged on the inner surfaces of the protective blocks, the second springs are connected with the outer surfaces of the fixing blocks, and the rear end of the outer surface of the base is fixedly connected with a limiting block. The air oxygen content measuring and calculating device for the underground coal mine is provided with the protective blocks made of rubber so that the outer surface of the base can be effectively buffered and protected; and with the arrangement of a rotating block, the condition that dust in the air is sucked to cause measurement errors is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of underground equipment in coal mines, in particular to a device for measuring and calculating the oxygen content of air used in underground coal mines. Background technique [0002] Coal mines are areas where human beings mine coal resources in coal-rich mining areas. When people go deep into coal mines such as underground mines, the air density in the mines is uncertain. Therefore, people often need to use oxygen-containing Measuring and calculating devices to ensure the safety of users. [0003] However, the existing oxygen content measurement and calculation device still has certain defects. It is easy to drop on the uneven ground, causing damage to the measurement and calculation device, and the air is generally mixed with some impurities such as dust. The measuring and calculating device cannot filter the air when it sucks in the air, which is prone to monitoring errors, and the existing measuring an...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a coal mine underground air oxygen content measuring device to solve the above-mentioned background technology that does not have a protective function, is prone to damage when dropped, cannot filter the air, and is prone to monitoring errors. The problem of being inconvenient to carry around

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