Indústria de Explosivos
Indústria de Explosivos
Special pump for emulsion explosives
Transalpine rail and road tunnels, dams for hydro-electric and storage power plants – the number of major construction sites which need significant explosive work has increased considerably over recent years.
Consultoria individual
Explosivos emulsionados: Bombas para mistura de ingredientes no local
The requirements for explosives have been changing. Higher performance and increased safety are the overriding objectives which are demonstrated above all in the greater use of emulsion explosives. In Switzerland alone – traditionally a country with a great deal of tunnel construction – the ratio changed between 1998 and 2005 from 100 percent explosives in cartridge form to 95 percent pumped emulsions. The benefits are huge: the components, which are not dangerous individually, are not mixed until they are on site. The finished mix fully uses the whole borehole, but also goes into small openings. Certainly, high-performance, customised pumps which meet the special challenges of the emulsion matrix or of the explosive are the basis for this.
Como bombear explosivos emulsionados com segurança
This type of explosive material certainly requires special conveyance conditions. In the German Accident Prevention and Insurance Association's Regulations (BGV) for solid uniform explosives and for blasting oils, it is for instance stated that pumps should prevent a dangerous strain on the materials or a separation of the emulsion.
Compatível com ATEX: Bomba para explosivos emulsionados
The proven NEMO® SY progressing cavity pump has been reworked to deliver emulsified explosives in vast areas. As a result, it offers you the necessary inspection options and safety measures. The most significant difference to conventional designs is the two inspection openings fitted above the coupling rod’s joints. These allow you to check whether the joints are still sufficiently lubricated and whether the seals are still intact, even during operation. By constantly checking, you prevent dangerous heat build-up from metal-on-metal friction.
Solution
The pump specialist NETZSCH has therefore developed special equipment for mobile mix loading vehicles to convey emulsified explosives. The proven NEMO® SY progressing cavity pump has therefore been extensively reworked to implement the necessary testing possibilities and safety measures. The two inspection openings which have been incorporated above the joints of the coupling rod are the greatest difference with respect to conventional designs. These mean that it is possible to check whether the joints are still sufficiently lubricated and the seals are still intact while the pump is in operation. Otherwise the metal on metal friction could lead to dangerous heat generation. The explosives pumps are ATEX-concurring and built for the individual requirements of the costumer.
NEMO® SY with bearing housing and free shaft end
- Medium: Emulsion explosives
- Pressure: Maximum 72 bar
- Delivery rate: Maximum 130 m³/h
