RRS Clearing wheel rotary valves

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RRS Clearing wheel rotary valves

Scraper wheel rotary valves are used for caking or slightly sticky bulk materials. The scraper wheel scrapes out the cells of the rotor and thus ensures smooth conveying of the bulk material. The scraper wheel ensures a forced clearing of the cell wheel and reliably scrapes the rounded chamber plates. The scraper wheel is driven by a spur gear. In addition, our scraper wheel sluice has a cleaning opening that allows easy cleaning and maintenance of the scraper wheel sluice without disassembly.

Application area

Nominal conveying capacity 0.45 – 320 m³/h at 100% filling level
Speed 30 rpm.
Differential pressure up to 0.05 MPa
Temperature range from -20°C to +80°C
Rotor diameter from 100 mm to 630 mm

Material variants

0.6020 (GG)
1.0570 (Steel)
1.4301 (V2A)
1.4571 (V4A)

Type/Features

Drive via directly flanged geared motor or with free shaft end
With motor lantern, coupling, torque arm or base plate
Sealing via radial shaft seals or packing glands
Housing as welded construction
With angular inlets and outlets
With cleaning flap
Surface primed, painted, blasted, pickled or chemically nickel-plated
Cellular wheel with 6 chambers

Variants

With wear protection in the inlet
With replaceable wear strips made of spring steel
With heat protection plate
With speed monitor
With seal gas connection
With purge gas connection for bearing cover and housing

Frequently Asked Questions

What is a self-cleaning-rotary valve?

A self-cleaning rotary valve is used to convey slightly sticky, caking, or firmly adhering bulk materials. The individual chambers are emptied by forced evacuation using a separate rotor which is placed below the main rotor.

Which rotors can be used with self-cleaning rotary valves?

Self-cleaning rotary valves are typically equipped with rounded chambers. This facilitates chamber cleaning and emptying, and the cleaning-rotor, which is located below the main motor, always follows a circular path. Rotary vane feeders can be made from all available materials. The range extends from mild steel 1.0577 and stainless steel 1.4301 to high-alloy steels such as 1.4571, 1.4539, and 1.4828.

How is the scraper wheel synchronized with the main rotor?

The scraper wheel and main rotor must be synchronized to prevent collision between the rotors. In all Neue JÄGER self-cleaning rotary valves, both rotor shafts are connected via two gear wheels, which enable precise synchronization of the two rotors to avoid safely any kind of collision.

How can self-cleaning rotary valves be cleaned?

Self-cleaning rotary valves can be equipped with a cleaning hatch below the cleaning rotor. Removing the cleaning hatch allows easy access to the rotor of the self-cleaning rotary valve, thus allowing for quick and easy cleaning. The cleaning hatch can also be made of a transparent material upon request to check the degree of population.

How is a self-cleaning rotary valve driven?

Commercially available helical gear drives are typically used to drive also self- cleaning rotary feeders. The geared motor can be connected to either the main rotor or to the cleaning wheel, for example, via a motor lantern. The motor mount is usually attached directly to the cleaning-wheel; the spur gear then transfers power to the main rotor.

RRS Clearing wheel rotary valves