Galvanized air knife
A technology of air knife and knife lip, applied in hot-dip galvanizing process, metal material coating process, coating, etc., can solve problems such as uneven zinc layer, zinc slag adhesion, uneven gas pressure, etc., and achieve a clean and tidy board surface Increased degrees, average of air pressure, and avoiding adhesion effects
Inactive Publication Date: 2017-05-10
江苏大力神科技股份有限公司
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Problems solved by technology
[0002] The current hot-dip galvanizing unit usually uses an air knife to scrape off excess zinc liquid and control the thickness of the zinc layer, but the traditional air knife has the following defects: 1. The splashed zinc slag often adheres to the lip of the knife and blocks it. The channel of the air outlet causes a white line to form on the galvanized sheet; 2. The pressure of the gas ejected by the air knife is uneven, resulting in uneven zinc layers on both sides of the galvanized sheet
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[0009] Depend on figure 1 with figure 2 Known, a kind of galvanized air knife comprises air inlet 5, rectangular air inlet chamber 1, circular mixing chamber 2, upper knife lip 3 and lower knife lip 4; described air inlet 5 is provided with At the right end of the air knife; the air inlet chamber 1 is arranged on the right side inside the air knife, and is connected to the external pipeline through the air inlet 5; the mixing chamber 2 is arranged in the middle of the air knife; the upper The knife lip 3 and the lower knife lip 4 are arranged on the left end of the air knife.
[0010] There are 9 air inlet holes 5, which are equally distributed on the central axis of the right side of the air knife, and the 9 air inlet holes 5 that are equally distributed make the pressure of the gas entering the air knife more uniform.
[0011] The lower part of the right side of the mixing chamber 2 has a hole leading to the air intake chamber 1, and the upper part of the left side has a ...
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The invention discloses a galvanized air knife which comprises an air inlet hole (5), a rectangular air inlet cavity (1), a round mixing cavity (2), an upper knife lip (3) and a lower knife lip (4). The air inlet hole (5) is formed in the right end of the air knife. The air inlet cavity (1) is formed in the right side of the interior of the air knife. The galvanized air knife is characterized in that the mixing cavity (2) is formed in the middle of the interior of the air knife; a hole leading to the air inlet cavity (1) is formed in the lower portion of the right side of the mixing cavity (2); and a hole leading to an acceleration channel between the upper knife lip (3) and the lower knife lip (4) is formed in the upper portion of the left side of the mixing cavity (2). According to the galvanized air knife, the mixing cavity (2) is formed behind the air inlet cavity (1) so that the pressure intensity in the air knife can be consistent; meanwhile, the upper knife lip (3) and the lower knife lip (4) are arranged to be chromium-plated electric heating plates, adhesion of zinc slag is avoided, and neatness of the plate face of the galvanized plate is effectively improved.
Description
technical field [0001] The invention relates to a zinc layer control device in a hot-dip galvanizing unit, in particular to a galvanizing air knife. Background technique [0002] The current hot-dip galvanizing unit usually uses an air knife to scrape off excess zinc liquid and control the thickness of the zinc layer, but the traditional air knife has the following defects: 1. The splashed zinc slag often adheres to the lip of the knife, blocking the The channel of the air outlet causes a white line to form on the galvanized sheet; 2. The pressure of the gas ejected by the air knife is uneven, resulting in uneven zinc layers on both sides of the galvanized sheet. Contents of the invention [0003] In view of the above deficiencies, the object of the present invention is to provide a galvanized air knife, which is to set a mixing chamber behind the air inlet chamber, so that the gas pressure in the air knife becomes uniform, and at the same time, the upper and lower knife l...
Claims
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Login to View More IPC IPC(8): C23C2/16
CPCC23C2/16
Inventor 曹晓国刘国玉
Owner 江苏大力神科技股份有限公司