PCB (polychlorinated biphenyl) smear removal drug liquid filtration recycling equipment and smear removal drug liquid filtration recycling method thereof

Abstract

The invention discloses PCB smear removal drug liquid filtration recycling equipment and a smear removal drug liquid filtration recycling method thereof. The equipment comprises a filtration film assembly, a filtration pump, a washing barrel, a washing pump, a liquid inlet, a sewage draining outlet, a water production port, an air compressed port and a running water port. Automated filtration andsmear removal are achieved through arrangement and mutual cooperation of the components. Automated washing is achieved mainly through arrangement and mutual cooperation of the filtration film assembly, the filtration pump, the washing barrel, the washing pump and valves. Washing is performed through circulation washing by adopting a drug preparation, and running water washing effectively guarantees smear stuck to the filtration assembly is removed clearly. In this way, the filtration film assembly can achieve the effect of repeated cyclic using without being replaced, and the replacement costis saved.

Description

technical field [0001] The invention relates to the technology in the field of PCB processing, in particular to a device for filtering and recycling PCB desmearing liquid and a method for filtering and recycling the liquid. Background technique [0002] The printed board will generate instantaneous high temperature when drilling, and the epoxy glass substrate is a poor conductor. When drilling, the heat is highly accumulated, and the surface temperature of the hole wall exceeds the glass transition temperature of the epoxy resin. As a result, the epoxy resin along the hole wall The surface flows to produce a thin layer of slag. If the slag is not removed, the signal connection in the multi-layer board will not be smooth, or the connection will be unreliable; Clean up. At present, PCB scum is removed by soaking and rinsing with chemical agents to remove printed board slag, and the chemical agent has strong oxidative properties and is expensive; in terms of my country's increase...

AI Technical Summary

Problems solved by technology

[0002] The printed board will generate instantaneous high temperature when drilling, and the epoxy glass substrate is a poor conductor. When drilling, the heat is highly accumulated, and the surface temperature of the hole wall exceeds the glass transition temperature of the epoxy resin. As a result, the epoxy resin along the hole wall The surface flows to produce a thin layer of slag. If the slag is not removed, the signal connection in the multi-layer board will not be smooth, or the connection will be unreliable; Clean up. At present, PCB scum is removed by soaking and rinsing with chemical agents to remove printed board slag, and the chemical agent has strong oxidative properties and is expensive; in terms of my country's increased efforts to monitor corporate environmental protection and corporate operating costs Continuously increasing, recycling and reuse of energy-saving and emission-reducing resources, minimizing operating costs of enterprises, alleviating environmental pressure, and improving profit margins of enterprises have become strategic goals of enterprises; Board production quality has always been a research topic for PCB manufacturers

[0003] In view of the characteristics of the slag removal agent and the slag itself, the current enterprises are manual slag removal or simple slag removal filter devices, relying too much on manual operations, which increases the cost of the enterprise, is also extremely dangerous, and the reuse rate of the liquid medicine is low

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