High efficiency filtration

Fine particle control in Dulevo Sweepers

During mechanical collection, particles raised by the central broom are sucked and retained due to the vacuum created in the hopper by two suction fans.

The flow rate and pressure head of these fans are sufficiently powerful to raise fine particles without clogging the filters. The result is a system able to suck all fine and ultra fine particles, as well as light litter such as leaves, paper and plastic bags.

This special fabric filtering system also retains the finest particles and completes the sweeping cycle, while ensuring only clean air flows back into the environment.

Medium-sized Dulevo sweepers have also been designed according to the mechanical-suction-filtering sweeping principle, with direct front collection.

Dulevo & GORE: together to protect the environment

Sustainable growth while limiting environmental impact – this is the mission driving constant production improvements through investment in new technologies to reduce consumption and optimize resources.

Constant research into increasingly innovative solutions and a continuous drive for improvement, fueled by unquenchable curiosity: these are the cornerstones of the Dulevo and GORE® Group partnership.

Both leading, state-of-the-art companies, aware of their common goal: environmental protection.

By working with the GORE® Group, Dulevo International has further improved its fine particle filtering systems.
The patented Dulevo mechanical-suction-filtering system, renowned for its ability to filter fine and ultra-fine particles, is now the only one that guarantees total removal of PM10 particles, thanks to the application of GORE® filters.

After years of intensive research, it can truly be said that merging both technologies has revolutionized all benchmarks in fine particle filtering, establishing a new standard for the industrial and urban cleaning sector.

The GORE Group: history, properties and features

When Roy Plunkett discovered Polytetrafluoroethylene (PTFE) in 1938, he had no idea of the extent to which it would revolutionize the world around him.

One day, he opened a new tetrafluoroethylene gas cylinder and none of the gas came out. He weighed it to check it was full. He cut the cylinder open in half and found a white powder instead of gas.

This powder was PTFE, a tetrafluoroethylene polymer. From the moment of its discovery until today, PTFE has been used in a huge range of applications: automotive, chemical, pharmaceutical, IT, electronics, medicine, to name but a few.

The GORE filter applied to your Dulevo sweeper

Dulevo has over 30 years of experience in industrial and urban sweeping and has developed an extensively tested fine particle filtering system of proven quality. The partnership with GORE® has further bolstered the reputation and quality which have always characterized the company.

The application of this innovative type of filter (available in all industrial and road sweeper models, starting from mod. 1100 up to mod. 5000) guarantees:

  • minimum filter maintenance. The filtering surface is entirely impenetrable to fine particles, and is therefore self-cleaning, even without any maintenance

  • Total filtering of PM10 fine particles by over 99%. Dulevo technology has perfected the already exceptional performance of its traditional system with the application of GORE® filters, achieving PM10, PM5, PM2.5 and PM1 particle filtering standards deemed impossible until today

  • quality filtering that lasts over time. PTFE ensures the machine's filtering properties remain unaltered over time, so that particles always remain outside the membrane, preventing even partial clogging over time

  • improved cleaning quality. Thanks to a 35% increase in your machine's air flow, ensuring improved suction of fine particles and light litter

  • total resistance to external agents. Perfect operation of your Dulevo sweeper will never be undermined by water, oil, vegetable and animal fats or chemicals, even and especially in the most extreme environments

  • filter service life with 5 year unlimited warranty. Even if used in extremely dusty environments, GORE® filters come with an unlimited 5 year warranty

The patented mechanical suction filtering system used on Dulevo sweepers – already renowned for their fine and ultra-fine particle filtering performance – have been perfected thanks to the exclusive application of Gore® filters, making them the only ones able to entirely remove PM10 fine particles in civil and industrial settings.

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