A process and device for blowing off and recovering workpiece surface material liquid with circulating compressed gas

Abstract

The invention provides a process and device for blowing off and recovering material liquid on the surface of workpieces with circulating compressed gas. The supercharger unit includes a supercharger; the air inlet of the supercharger is connected with the exhaust port of the exhaust gas chamber, and the outlet of the supercharger is connected with the inlet of the compressed gas chamber; The air inlet connected to the air outlet, the inner wall of the pressurized gas air chamber is provided with a blowing outlet; the bottom of the blow-off chamber is provided with an air guide orifice; the air guide orifice divides the central area of ​​the blow-off unit up and down into a blow-off chamber and a gas-liquid Separation chamber; there are diversion holes on the air guide orifice plate, and the formed gas-liquid mixture enters the gas-liquid separation chamber; there is a filter material in the gas-liquid separation chamber, and an air guide net is arranged around the outer periphery of the gas-liquid separation chamber; the air guide net The outer periphery is provided with a ring-shaped exhaust air chamber. The device combines multiple functions, has a simple structure, and has a high recovery rate of material and liquid.

Description

technical field [0001] The invention belongs to the technical fields of clean production of resource recovery, water saving and emission reduction, and environmental pollution prevention and control, and in particular relates to a process and a device for blowing off and recovering material liquid on the surface of workpieces with circulating compressed gas. Background technique [0002] After surface treatment of the workpiece (such as pickling, oxidation, electroplating, electrolysis, electrophoresis, phosphating, etching, etc.) The cleaning process can only be removed after cleaning. The cleaning process is the core pollution production process of heavy metals, cyanide, acid, alkali, nitrogen, fluorine, phosphorus, sulfur and other pollution sources in the surface treatment industry. Under the circumstances, the amount of cleaning water used in this process (or the amount of cleaning sewage produced) is in a linear relationship of 1:1 with the amount of material liquid ca...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of blowing and spraying deliquoring method are: a. Two kinds of gases, clean gas and mist, are required to blow the material liquid on the workpiece at the same time, and there is a complex structure of the blowing off system; The feed liquid oxidized by the air needs to use inert gas as the cleaning gas); c. The stripping tail gas carrying the feed liquid needs to be purified before it can be discharged up to the standard, which increases the treatment investment and processing cost. Although it can meet the standard, it cannot be discharged zero

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