High-air-tightness gas diluting and discharging device

Abstract

The invention relates to the technical field of gas treatment equipment and particularly discloses a high-air-tightness gas diluting and discharging device. A diluting pipe is arranged in a stainlesssteel pipe, the two ends of the diluting pipe are separately fixedly connected with a gas inlet pipe and a gas outlet pipe, the hole diameter of the diluting pipe gradually varies, the left side of the hole is small, and the right side of the hole is large. The hole diameter of the air inlet pipe is matched with the left hole diameter of the diluting pipe, and the hole diameter of the air outlet pipe is matched with the right hole diameter of the diluting pipe. A low-pressure gas delivery pipe is arranged at the upper end of the left side of the stainless steel pipe, the low-pressure gas delivery pipe communicates with the diluting pipe, and the air inlet pipe is connected with the air outlet pipe through a backflow pipe. By arranging the backflow pipe between the air inlet pipe and the air outlet pipe, multiple circulating treatment can be carried out according to the concentration of to-be-diluted gas, high-concentration gas is discharged through the air outlet pipe after being fullydiluted, the diluting efficiency is high, and the safety is great.

Description

Technical field [0001] The invention relates to the technical field of gas treatment equipment, in particular to a high-sealing gas dilution discharge device. Background technique [0002] Under normal circumstances, a large amount of gas is produced during underground mining in coal mines. Gas is a colorless and odorless gas. It is lighter than air, hardly soluble in water, does not support combustion and cannot maintain breathing. When a certain concentration is reached, it can cause human shortages. Asphyxiated by oxygen, when the gas concentration is high, it will explode after encountering an open flame, which brings a great threat to the lives of underground workers. Therefore, coal companies need to invest huge sums of money every year to solve the problem of gas exceeding limits. The usual practice is to extract and discharge large areas of gas through large-scale ventilation systems. [0003] The prior art circular-slot ejected gas diluter, such as CN203201588U circular-s...

AI Technical Summary

Problems solved by technology

[0003] The annular seam injection type gas diluter in the prior art, such as the annular seam ejection type gas diluter of CN203201588U, this invention uses compressed air as the power source, and the low pressure compressed air is passed into the annular air chamber of the ejector, and then It is sprayed out through the circular streamlined slit, rapidly expands and merges to produce high-speed jets, but it has the following disadvantages during use. There is no backflow device, so that the high-concentration gas cannot be diluted completely, and the dilution efficiency is low.

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