Air knife for band steel hot galvanizing production

Abstract

The invention discloses an air knife for band steel hot galvanizing production. The air knife for band steel hot galvanizing production comprises two air knife bodies which are arranged oppositely. Each air knife body comprises a beam, an air inlet pipe is fixed to one end of the beam, a knife lip angle adjustment mechanism is arranged at the other end of the beam, an air flow distribution cylinder communicating with the air inlet pipe is arranged in the beam, the bottom of the beam is connected with an air chamber and a knife body in sequence through a knife rest, the air flow distribution cylinder communicates with the knife body through the air chamber, the knife body and the knife rest are rotationally connected, an upper knife lip and a lower knife lip which are matched with each other are installed on the knife body, and a knife lip interval adjustment mechanism for adjusting the lip seam interval between the upper knife lip and the lower knife lip is further fixed to the beam. The air knife for band steel hot galvanizing production has the remarkable effects that the interval between each upper knife lip and the corresponding lower knife lip is adjusted on line, the adjustment time is greatly saved, and the equipment running rate is increased; the problem that an adjustment technology is high in difficulty and requirement is solved; and the air pressure of air flow ejected out of air channels is more stable because the air chambers are arranged, and the product quality can be improved.

Description

Technical field [0001] The invention relates to the technical field of hot-dip galvanizing of strip steel, in particular to an air knife for the production of hot-dip galvanizing of strip steel. Background technique [0002] The method of applying the principle of fluid impact to control the thickness of the galvanized layer of strip steel is called air-blowing galvanizing. This method uses a slit nozzle that traverses the entire strip width, which sprays a continuous flat airflow like a knife. The airflow acts like a scraper to scrape the zinc liquid from the surface of the strip back to the zinc pot. The air knife got its name from this. Under normal circumstances, the air knife lip gap and air jet angle need to be adjusted frequently during the production process, and if there is an abnormal air flow or bump, it needs to be adjusted at any time. [0003] However, the current air knife lip gap and angle need to be adjusted offline. When adjusting, the air knife is lifted away ...

AI Technical Summary

Problems solved by technology

If the adjustment data is wrong, it will cause an increase in production costs or waste products

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