Cyclone screener type DA … Vario Containment from AZO

The DA ...Vario Containment screener is suitable for use in the bulk materials handling industry where there are very stringent requirements regarding the amount of residual dust released. This means the machine is suitable for screening toxic materials both in the pharmaceuticals field and also in other industrial applications. A risk to machine operators from dust that is harmful to their health can be ruled out, both in normal operation and in the event of a service job.

Special advantages

Replacing the screen basket and dosing screw under containment conditions
Inspection of the screen basket by opening the inspection hatch under containment conditions
Outlay for operations wearing full body protection can be reduced
Easy to exchange the dosing module for different performance ranges
Technology for cyclone screener type DA proven over years of use
No additional dosing unit is required thanks to self-dosing, resulting in low overall height
The drive with rotor and screen basket can be pulled out and pivoted with quick-release fasteners
The drive with dosing screw can be pulled out using quick-release fasteners
Suitable for CIP
Chromium-nickel steel design

The design of this machine is based on the tried and tested type DA cyclone screener with two drives and extraction devices. There are different dosing modules available in addition to the cover for various ranges of performance.

The screener is fitted with film liners. This make it possible to replace both the contaminated screen basket with a cleaned one and also the screw feeder in the dosing module under containment conditions.

Replacing screen basket and dosing screw without risk of contamination
The contaminated screen basket is replaced under containment conditions with a cleaned screen basket using a film liner and the crimp fasteners. The machine operator and the environment remain protected from contamination during the entire procedure.

After the screen basket has been replaced, the contaminated sections of film are drawn inside the new liner into the side pockets. After crimping off the pockets, they can be disposed of together with their contents.

Sealing the film liner to make it air and dust-tight
To seal the film liner at a specific place, the crimp clamp is pulled over the bag by hand and compressed using special crimping tongs. After this the crimp can separated using a cutting tool.

Toolkit with various-sized crimp clamps, crimping tongs, cutting tool and opening tools

Inspecting the screen basket under containment conditions
The inspection hatch can be opened using the gloves attached in the film liner and the screen basket can be inspected by turning it.

After the hatch is closed again, a cleaning gun can be used to bind the dust that clings to the hatch. The cloth used for wiping is disposed of in a side pocket.

Dosing unit as replacement module
The dosing screw can be replaced inside the film liner under containment conditions. To do so, the appropriate tools are first passed into the liner beforehand.

The entire dosing module, consisting of drive, dosing screw, product inlet and extractor slide, can be replaced in order to attain different performance figures. To do so, it is separated from the rest of the screener using a changeover rail.

Coarse material container and cleaning pan
The coarse material container is connected to the machine via split-valve technology. The coarse material accumulated in the hopper can then be disposed of under containment conditions or fed back into the production process.

For wet cleaning, the coarse material container is replaced with a cleaning model in just a few steps. This is fitted with a cleaning head and a connection for a drainage line.

AZO Cyclone screener type DA … Vario Containment

for screening Active Pharmaceutical Ingredients (API) and other toxic materials

Features of the Vario Containment cyclone screener