Safety Technology

In the metal-working industry, large quantities of cooling lubricant are used especially in cutting processes. These cooling lubricants predominantly are non water-soluble oils having the characteristic to form explosive mixtures with air. Heating them up above their flashing point produces explosive vapor/air mixtures. This can be prevented by selecting cooling lubricants with a rather high flashing point. However, the formation of aerosols due to atomizing or spraying processes cannot be averted. Such aerosols are explosive even below the flashing point. When using oil/water emulsions (water-soluble cooling lubricants), a water contents of 80% is required to reliably exclude an ignition.
There are number of countermeasures increasing the safety when applying non water-soluble cooling lubricants in machine tools. Messrs. LTA Lufttechnik GmbH from Nordrach has developed a special fire and explosion protection system which was appraised by an independent institute (IBEXU). This system comprises a pressure relief flap, a trip unit and a fire protection flap.

The LTA pressure relief flap protects the machine housing against deformation which would result from the increased pressure generated by an explosion. If a predefined overpressure is detected in the machine, a pressure relief valve opens. This opens an orifice through which the overpressure may escape. After the escape of the overpressure, the pressure relief flap is automatically opened again. As opposed to other systems, this flap can be reused as often as required. The opening pressure may exactly be defined and also the flap position is easy to monitor.

The LTA trip unit forms the connecting link between pressure relief flap and fire relief flap or controls the function of the fire protection flap via other signals (e.g. fire detector, UV sensor etc.). The triggering is selective where factors like reaction time, operator friendliness, monitoring time and reliability must be taken into consideration.

The LTA fire protection flap serves to interrupt the connection between suction and machine in case of a fire or an explosion. This prevents the stoking of the fire due to the following sucked fresh air and the flames from jumping over to the suction system and the piping systems.

LTA Lufttechnik is a renowned partner for complete solutions in air technology. The company projects, builds and delivers air filter and fire protection systems for trade and industry. For over 30 years, LTA has been researching, developing and manufacturing aerosol separation products. The electrostatic separation method is eco-friendly and has continuously been further developed and improved.

Portfolio:
- Separation and cleaning of oil- and emulsion mist at machine tools
- Gathering and separation of sold-, weld- and oil smoke
- Dust- and chip suction
- Special applications, for example suction of plastic-, silicone- & releasing agent vapours
- Explosion- and fire protection at oil-cooled machine tools
- Suction at source, group suction, centralized air suction, hall air cleaning
- High-duty filter units, ventilation, heat recovery
- 24/7 Service with 15 support points in 11 countries

Available in independant or central suction plants, our equipments are used for exhaust air, air supply or hall air suction, purification. The plants are mounted as initial equipments on machines of well-known automotive manufacturers or as retrofits on already available machines of small and medium size enterprises.

Keywords: Airfilter, suction-devices, electrofilter, emulsionmist-filter, oilmist-filter, dustfilter , chipfilter, welding-fume-filter, solder-smoke-filter, safety-technics, fire-protection, machine-tools

LTA Lufttechnik GmbH
Junkerstraße 2
D - 77787 Nordrach

Tel.: +49/7838/84-245
Fax: +49/7838/84-308
Email: info@lta.de
Homepage: www.lta.de

press contact:
Philipp Fehrenbach
sales office-duty and marketing-manager
Tel.: +49/7838/84-331 (Fax: -308)
Email: philipp.fehrenbach@lta.de

This release was published on openPR.