High-air-tightness pipe fitting applied to exhaust gas treatment air duct system

Abstract

The invention provides a high-air-tightness pipe fitting applied to an exhaust gas treatment air duct system. The high-air-tightness pipe fitting comprises an air duct and a joint used for being connected with the air duct, and is characterized in that the air duct comprises an outer duct layer and an inner duct layer, a hollow layer is arranged between the outer duct layer and the inner duct layer, a plurality of connecting ribs are arranged between the outer duct layer and the inner duct layer, the joint comprises an inner connecting layer and an outer connecting layer, a plurality of connecting ribs are arranged between the inner connecting layer and the outer connecting layer, a hollow channel is formed among the connecting ribs, the inner connecting layer and the outer connecting layer, first internal threads and second external threads are symmetrically arranged at the two ends of each of the internal connecting layer and the external connecting layer correspondingly, the end ofthe inner duct layer of the air duct is provided with first external threads matched with the first internal threads, and the end of the outer duct layer of the air duct is provided with second internal threads matched with the second external threads. According to the high-air-tightness pipe fitting, through the hollow layer structure cooperative design based on the air duct and the joint, the high-air-tightness effect of the pipe fitting is achieved, poisonous and harmful gas leakage is reduced, the pollution hazard to the atmosphere and the workers is reduced, the noise reduction effect isimproved, and the comfort degree of the exhaust gas treatment working environment is improved.

Description

technical field [0001] The invention belongs to the technical field of exhaust gas treatment, and in particular relates to a high airtight pipe fitting applied to an air duct system for exhaust gas treatment. Background technique [0002] The air ducts used in the exhaust gas treatment system generally use PP and PVC pipe fittings with strong corrosion resistance and weather resistance. The disadvantage of using PP and PVC pipe fittings in the air duct system is that the fitting of the pipe fittings cannot achieve the airtightness of the metal parts. The actual production In the process, there is often a small amount of high-pressure gas leakage at each connection of the exhaust gas treatment pipeline, but this situation is mostly ignored by enterprises. If the treatment gas contains toxic and harmful components, it will bring pollution and damage to the environment and enterprise workers. In addition, the conditions to be improved that generally exist in the exhaust gas tre...

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Problems solved by technology

[0002] The air ducts used in the exhaust gas treatment system generally use PP and PVC pipe fittings with strong corrosion resistance and weather resistance. The disadvantage of using PP and PVC pipe fittings in the air duct system is that the fitting of the pipe fittings cannot achieve the airtightness of the metal parts. The actual production In the process, there is often a small amount of high-pressure gas leakage at each connection of the exhaust gas treatment pipeline, but this situation is mostly ignored by enterprises. If the treatment gas contains toxic and harmful components, it will bring pollution and damage to the environment and enterprise workers. Injury, in addition, the situation that generally exists in the exhaust gas treatment system needs to be improved, including the noise pollution caused by the high-speed movement of the gas in the air duct system

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