A method for automatically separating waste circuit board components by using high-pressure hot air
A waste circuit board, automatic separation technology, applied in chemical instruments and methods, transportation and packaging, manufacturing tools, etc., can solve the problems of working environment and human health hazards, strong toxicity, and organic pollutants with foul odor, etc., to achieve easy disposal , reduce energy consumption, increase the effect of intake air temperature
Active Publication Date: 2016-03-23
伟翔环保科技发展(上海)有限公司
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0014] When the circuit board is heated at 270°C to 350°C, a severe thermal decomposition weight loss reaction will occur, and the flame retardant (mainly bromine-containing epoxy resin) in the circuit board will be partially decomposed. In addition, during the manufacturing process of the circuit board, Adding organic substances such as curing agents and accelerators, these organic substances will volatilize or decompose when heated, and most of the organic pollutants produced have odor and strong toxicity at low concentrations, which are harmful to the working environment and human health.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In order to better understand the content of the present invention, the following will be further described in conjunction with specific examples.
[0055] In the method for automatically separating waste circuit board components using high-pressure hot air of the present invention, as figure 2 The schematic diagram shown: in the loading station 2001, the waste circuit board 2003 is manually pretreated, that is, the plastic frame and related screws on the back are removed, the relevant iron patches are removed, and the plastic flower wires are cut off. After the pretreatment is completed, place the circuit board on the nail structure 2010 with its back facing upwards. When placing it, ensure that the distance between the boards is between 10 mm and 20 mm. The nail structure 2010 is conveyed by the conveyor belt 2009 into the heat preservation room 2002. On the other hand, the high-pressure air blown by the fan 2008 is raised to 90°C-110°C through the exhaust gas prehea...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for automatically separating waste circuit board components by using high-pressure hot air. The method includes fixing the waste circuit boards to be separated on a conveyor belt with a nail structure for transmission, and separating the waste circuit boards by using a separation method of high-pressure and high-temperature airflow impact. The substrate and components of the discarded circuit board; when separating, the high-pressure and high-temperature airflow is blown out in the form of an air knife or similar air knife slit to remove the solder and force the components to fall off. The invention realizes the industrial application of automatic separation of discarded circuit board components, harmless treatment of toxic and harmful gases, efficient treatment of circuit boards and non-destructive recovery of a large number of valuable components, and provides the possibility of recycling.
Description
technical field [0001] The invention relates to a method for automatically separating waste gas circuit board components by using high-pressure hot air, and belongs to the technical field of comprehensive utilization of electronic waste resources. Background technique [0002] In recent years, electronic waste generated by household appliances has reached a peak period of scrapping. Waste TV sets account for a considerable proportion of electronic waste. According to incomplete statistics, the annual scrapping volume of TV sets is 23.7502 million (2010), million units (2011), 27.7291 million units (2012). Among them, the circuit board is an important part of the discarded TV set, which is usually welded by a low-temperature soldering method of an insulating substrate covered with copper foil on one or both sides and several components. Most of the substrates are flame-retardant phenolic paper-based copper-clad laminates, non-flame-retardant phenolic paper-based copper-clad ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/018
CPCB23K1/018B09B3/40
Inventor 江远峰
Owner 伟翔环保科技发展(上海)有限公司