Online self-cleaning spray gun and desulfurization wastewater zero discharge system

Abstract

The invention provides an online self-cleaning spray gun which comprises a spray gun pipe and a nozzle arranged at one end of the spray gun pipe and further comprises a cleaning assembly, the cleaning assembly comprises a cleaning rod and a cleaning head capable of moving in the length direction of the spray gun pipe, and the cleaning head is arranged at the end, close to one side of the nozzle, of the cleaning rod. The cleaning head comprises a mounting part, a scraper part and a brushing and sweeping part, the scraper part and the brushing and sweeping part are both located on the mounting part, the mounting part is connected with the cleaning rod, the scraper part is provided with a first channel allowing a nozzle to penetrate through, and the first channel is a knife edge capable of scraping dust and dirt on the surface of the nozzle; the invention further provides a desulfurization wastewater zero discharge system which comprises the spray gun. According to the online cleaning device, scale on the surface of the nozzle is cleaned through reciprocating movement of the cleaning head, the purpose of online cleaning of the spray gun can be achieved through the treatment, and shutdown and production halt are not needed.

Description

technical field [0001] The invention relates to flue atomization treatment, in particular to an online self-cleaning spray gun and a zero-discharge system for desulfurization wastewater. Background technique [0002] Because the industrial flue gas pipeline generally contains a lot of dust, the long-term use of the spray gun in the flue will lead to dust accumulation, which will eventually cause the spray gun to agglomerate. [0003] The conventional spray gun is only fixed on the flue for spraying, and the nozzle cannot be cleaned automatically, so once the conventional spray gun accumulates dust or agglomerates, it has to be manually extracted for inspection and manual cleaning, which is very troublesome. If the spray gun is not extracted in time for cleaning , It will cause the nozzle to be blocked, spraying cannot be carried out, and the requirements of the process cannot be met, and when the situation is serious, it will cause a large amount of agglomeration on the flue...

AI Technical Summary

Problems solved by technology

[0002] Because the industrial flue gas pipeline generally contains a lot of dust, the long-term use of the spray gun in the flue will lead to dust accumulation, which will eventually lead to the spray gun crusting and agglomeration

[0003] The conventional spray gun is only fixed on the flue for spraying, and the nozzle cannot be cleaned automatically. Therefore, once the conventional spray gun accumulates dust or agglomerates, it has to be manually extracted for inspection and manual cleaning, which is very troublesome. If the spray gun is not extracted in time for cleaning , will lead to clogging of the nozzle, unable to spray, not meeting the requirements of the process, and when the situation is serious, it will cause a large amount of agglomeration on the flue wall, resulting in industrial accidents

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