The invention relates to a mixed
acid concentration adjusting
assembly,
pickling equipment and a using method of the
pickling equipment, and belongs to the technical field of steel
machining. The mixed
acid concentration adjusting
assembly comprises an adjusting box, an adsorption
tower liquid discharging
pipe and a new acid
storage tank, and the interior of the adjusting box is divided into two concentration adjusting cavities through a partition plate; a vibrating tube densimeter and an Hion selective
electrode are arranged on a liquid
discharge tube of the adsorption
tower, so that the concentration of the mixed acid can be cooperatively detected, and new acid can be accurately supplied. The
pickling equipment comprises the mixed
acid concentration adjusting
assembly and is further provided with pre-cleaning equipment, a roller, a recycling box and the like, the pre-cleaning equipment and the corner cleaning assembly synergistically remove impurities on the surfaces and the side edges of materials through a cleaning roller, and waste liquid filtered by the recycling box is purified through an adsorption
tower and then circulates to the concentration adjusting assembly. Through the closed-
loop design of pretreatment, acid pickling, waste liquid
recovery and concentration regulation, the problems of high acid consumption, large
pollution and concentration regulation
lag of a traditional process are solved, the acid consumption and
environmental protection pressure are remarkably reduced, and the surface quality of a product is improved.