CYCLONE FILTRATION

HOW IT WORKS

Driven by the inlet pressure, the water or liquid with particles enters the top chamber at a tangent causing a rotation, and accelerates through the tangential slots/holes in the top section of the separator, down into the centre section of the separator. This flow creates rapid rotation within the centre sector.

The rotation of the liquid forms a vortex in the centre of the separator. The centrifugal action forces the separation of heavy particles from the water. The separated particles accumulate in the bottom collection chamber where they are periodically purged.

ADVANTAGES

Cyclone Separators have no moving parts or filter elements, screens, bags or media. Therefore, they have many advantages compared to conventional filtration methods.

MAJOR COST SAVINGS ACHIEVED WITH CYCLONES

• Large savings in filter elements and media cartridge replacement.
• No cleaning costs.
• No down time. You do not need to stop the production or process to change filter elements.
• Low water or liquid loss by purging of Separators compared with major losses by backwashing of automatic strainers or sand media filters.
• Low consistent pressure loss. Pressure drop remains constant despite variations in dirt loading of the liquid.

SPECIFICATION

Approximate working conditions

Minimal differential in density between particles and liquid: 20%

Maximum viscosity of liquid: 3°E (22 centistokes)

Maximum concentration of particles generally 1% depending on actual application – for higher concentrations consult factory

Maximum operating temperature: 100°C

Finish

Preparation: Grit blasted with anti-corrosion coating

Finish Coat: Polyester (electrostatically applied)
Depth: 80 micron

PERFORMANCE

The Centrifugal Separator will remove 98% of all particles with a specific gravity of 2.6 to 2.8 (i.e. sand) down to a size of 75 microns.

In recirculated systems, or with two Separators in series, the efficiency will improve to remove 98% of all 40 micron particles or larger.

(Click chart image to enlarge)

INSTALLATION INSTRUCTIONS

The Separator should be installed vertically using the recommended mounting brackets and should not rely on its pipework for support. A range of mounting brackets are available upon request.

For all separator models

Before installation, check inlet/outlet and purge connections for foreign objects which could have entered during storage and delivery. Remove any protective thread or flange covers.

INLET / OUTLET AND CONNECTION POINTS

For optimal performance the cyclone inlet should have minimum turbulence. It is recommended that the inlet is connected with a straight pipe with length of at least three times the diameter.

The Separator should be protected against damage from freezing by suitable insulation/trace heating as required.

To monitor the cyclone is operating under optimal conditions, we recommend provision for pressure gauges and nanometers on inlet and outlet.

SIZE SELECTION

Cyclone Separators should be selected on required flow rates not on pipe size.

For effective performance, Separators must always operate within their design flow range.

INSTALLATION PIPEWORK

The pipework should be installed to conform with good working practice and should have minimal head loss. The pipework size must not be less than the cyclone connection, however we recommend installation with pipework one size larger than the Separator inlet/outlet connection, i.e. If the model has ¾” inlet/outlet connections. We recommend 1” pipework as a minimum.

PURGE SYSTEMS

It is important that the correct method of purging is selected. Please contact The Rodin Group for guidance on selection of the correct purge system but we normally recommend auto purge valve as this is more reliable over a range of conditions.

There are a wide range of automatic purge systems including:-

• No water loss (closed recovery systems)
• Time control
• Air operated
• Fail safe
• Harsh environment systems