Pneumatic conveying rotary valve Rotofeeder

for dust collectorsfor bulk materialsfor waste

Overview
The Paramount Rotofeeder provides regulated transfer of bulk and process waste into a single high-velocity conveying air duct located in a trench beneath production equipment. Designed to serve multiple feed-in points (typically up to ten), the Rotofeeder accepts waste from chutes positioned close to production machines to reduce floor spillages and airborne dust at source.

Operating principle
Internal rotating paddles fitted with wear-resistant flexible rubber strips create sealed, rotating voids that convey waste from the feed-in chute into the conveying duct. The rubber strips flex to allow oversized pieces to pass without compromising the conveying air stream. Capacity is calculated from paddle section volume and rotation speed and is typically specified with a safety margin to handle sudden overloads.

Fan and conveying options
Fan placement can be configured according to waste type: before the feed-in points for fine waste and dust or downstream with a chopper fan to reduce particle size prior to separation. An external air intake option mitigates loss of heated building air. System design supports robust industrial operation and flexible installation layouts.

Drive and protection
The Rotofeeder is driven by a high-performance motorised gearbox mounted on shock-absorbing rubber bumpers to minimise vibration. The gearbox includes an integral motor cut-out for overload protection and is engineered to withstand heavy loads for continuous industrial duty.

System advantages
Sealed, negative-pressure configuration contains waste and dust within ductwork, preventing floor contamination and atmospheric release. A single high-capacity conveying duct served by multiple Rotofeeders can replace several local fans and belt conveyors, simplifying waste handling, reducing energy use and maintenance. With only one slow-moving part in contact with waste, wear and mechanical failures are minimised, and the large-diameter conveying duct reduces blockage risk.

Benefits of Rotofeeder Systems

• Clear production area: a single floor trench concentrates ancillary services and keeps the production area organised.
• Easy expansion: additional machines can be integrated without major modifications to waste handling.
• Clean working environment: containment of dust and waste supports hygiene requirements in sensitive production (e.g., food-grade) facilities.

Technical specifications

• Serves up to ten feed-in points into a single high-velocity conveying air duct.
• Internal rotating paddle assembly with wear-resistant flexible rubber strips forming sealed voids.
• Capacity typically oversized to handle sudden overloads (calculated from paddle volume and rotation speed).
• Fan location flexible: before feed-in points for fine waste/dust or after with chopper fan to reduce waste size.
• Option for external air intake to prevent loss of heated air.
• High-performance motorised gearbox with shock-absorbing rubber bumpers and integral motor cut-out for protection.
• Sealed negative-pressure design to contain waste within ductwork and prevent dust release.
• Only one slow-moving part in contact with waste to minimise wear and reduce failure risk.
• Large-diameter, high-powered conveying duct to minimise blockages and downtime.
• Robust industrial construction for long-term reliability.