CIPRES FILTR BRNO s.r.o.

Extraction of fumes generated during welding

The task of exhaustion from welding workplaces is smoke exhaust from a welding area and from worker's breathing zone. Trapping of welding fumes is going on: a) By using exhaust, positioning arms. Various lengths 3-9 m. b) Suitably shaped exhaust devices, slotted fans, covers etc. We produce the devices to measure according to actual requirements of a particular application. Central extraction piping: - It connects all extraction sites with one central extraction and filtration unit. - Correct dimensioning of piping system ensures - equal distribution of extraction power. - An automatic flushing of pipes with max.extraction power serves to prevent creation of deposits in pipes. - All necessary components for assembly are parts of extraction piping, i.e. flanges, valves, clamps, brackets, columns. - We produce piping components in spiro version or welded class 11. Upcast pipes: - An exhalation of clean, filtered air is brought back into a hall in winter season. In summer it is exhausted outside a building. So-called winter/summer operation. - Air mass is exhausted into the hall through a HAFI PES sleeve ensuring its draught-free spreading in the hall. - Return of clean, filtered air back in the hall brings considerable savings of heating energy. Extraction and filtration equipment: - For extraction of welding fumes we recommend central extraction and filtration equipment of our production of CARM GH type. - We set extraction power according to particular requirements, i.e. central filtration unit is designed "to measure". - Filtration medium are filter bags with guaranteed lifetime of 18 000-20 000 operating hours. - Extraction output will be constant throughout filter media lifetime, without manual re-treatment. - Regeneration of the filtration medium is performed by counter-flow of pressure air during filtration system operation (JET SYSTEM). - A fan is placed in a noise silencer (max 72dBa). - Extraction power control is solved by using a frequency converter regulating fan speed depending on the number of actively used sites. The system of dust exhaustion out of the filtration device: - It serves for dust exhaustion, incl. possible source of ignition in the filtration device (sparks, hot balls) outside the filter. - A spark that flies into the filtration device is, by using knocking-over bars, diverted directly to a material discharge. - There is pneumatic transport of dust connected to the material discharge, it conducts dust into a cyclone separator in a closed circuit. - Dusts are separated in a centrifugal separator and they are conducted through a fire damper in a collecting container. - In case of ignition in the collecting container, a contact on the fire damper is melted and then damper closes itself and prevents fire from spreading - fire damage minimizing. - The system serves as a protection against ignition of the filter from the collecting container. Extraction power control: a) automatic control of extraction power based on underpressure - manual opening/closing of flaps b) automatic control of extraction power based on an impulse from the machine. - It uses: welding sensors, automatic flaps, frequency converter and control system. - Each site can be fitted with an automatic flap, which is connected to a welding apparatus and control system by electric coupling, controlling the frequency converter. - At the moment when a worker starts welding, the sensor reacts, the flap is opened and the frequency converter will increase extraction power. - After finishing of welding, the flap is closed and the frequency converter will reduce extraction power. - The system automatically switches on the filter at the beginning of welding of the first worker and switches off after finishing of welding of the last worker. - The system is equipped with a cyclic flushing of pipes with maximum extraction power. The system opens all flaps at once and for about 1 minute will increase extraction power to maximum. - The automatic flushing ensures pipeline cleaning from creating deposits. - Extraction power control ensures energy savings ranging from 40-60% compared to the classic START → STOP. Our company has many installations of extraction of welding shop all over the CR and the EU. On request we will arrange a reference visit in your surroundings. You can also visit our production plant. The whole team of our company looks forward to collaboration.