Painting equipment – Industrial varnishing device.
The following operating zones of the device are distinguished:
1) disassembly preparation area, cleaning, wrapping, putty, priming the element to be varnished;
2) spray painting booth (painting);
3) accelerated drying cabin (dried);
4) finishing zone, including the removal of the applied shields and the reassembly of the disassembled parts.
Spray booths and drying booths can also be combined.
The disadvantages of combined paint and drying booths. The energy consumption for these cabins is relatively high, because after spraying, the cabin must be warmed up, however, after drying the varnished element, its temperature must be lowered.
Otherwise, compared to separate spray and drying booths, in connected cabins, fewer elements can be processed (e.g. car body) during the day.
What is the task of the exhaust and supply installation in the paint shop?? The exhaust and supply air installations fulfill the following tasks:
1) maintaining constant pressure;
2) removing paint sprayed next to the workpiece;
3) separation of spray paint particles from the extracted air;
4) supply of purified and heated air.
Why is there a slight overpressure in the shower cubicle compared to adjacent rooms?
Positive pressure in the spray booth prevents contaminating particles from entering the spray zone.
The principle of operation of various paint dust removal systems
There are two systems for removing paint dust:
1. Dry removal: In this system, the paint particles are captured by layered fiber mats or by filters made of flame-retardant paper.
2. Wet removal: In this system, the paint particles are bound by the water, and then precipitated by adding appropriate agents. The resulting paint sludge is disposed of as special waste.
The varnish sludge formed during the wet removal of varnish dust must be disposed of as special waste due to environmental protection requirements.. Wet dust removal considerably increases costs.
There are the following types of compressors:
1. Piston compressor – air is drawn in through the inlet valve and compressed to a pressure of 7-10 bar.
2. screw compressor – two rotors with integrated scrolls compress the air to 24 bars.
3. Diaphragm compressor – The diaphragm built into the compressor sucks in air and compresses it to a pressure of approx. 3 bars.