Cyclone Screener for APIs

Screening API Without Exposure: How to Ensure Containment in Screening and Maintenance

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Screen inspection

The inspection hatch for checking the screen cylinder can be opened using a glove integrated in the flexible liner. The screen cylinder can be rotated manually by almost 360° and, thanks to the built-in light, it can be inspected for damage or contamination through the film. Once inspection has been completed, the inspection hatch can be closed again using the film gauntlet. Using this procedure means that the operator has no contact with the high-risk substance in the machine at any time whatsoever.

Replacing the screen

If any damage to the screen fabric is found during the screen inspection, this will necessitate replacing the damaged screen. This procedure can also be carried out using liner technology without any contact with the screened product. If the machine has stopped, the drive unit for the screen rotor is removed from the housing lengthwise together with the screen cylinder. The weight of this unit is supported by an extraction device. The plastic film system that was attached when the machine was fitted is deployed in this process; it forms a tubular working space, in which the screen cylinder and the screener rotor are located.

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Additional Information
After-Sales Service
Ensuring Reliable and Safe Operation

In addition to the quality of the machinery and plant, being able to rely on customer service is a decisive criterion for every customer. This applies to both installation and commissioning as well as to inspections and maintenance or the supply of spare parts.

Azo provides rapid delivery and extended availability of quality-controlled original spare parts. If orders are placed before 2 pm, available items can be shipped the same day. Azo works with all reputable parcel services and, if required, can arrange for express or special delivery.

Online spare parts catalogues for specific plants make it possible to identify spare parts reliably. The customer is also given suggestions for keeping a supply in stock. This includes not only all wear parts and consumables but also the spare parts required to maintain fault-free operation. Examples for this cyclone screener would be:

  • wear parts: gaskets, screen mesh, bearing seals ...
  • consumables: foil liners for screen replacement, foil liners for supplying and evacuating cleaning materials, foil hood with integral gauntlet for screen inspection
  • spare parts: screen basket, bearing assembly, rotor ...

Azo employs a team of permanent staff who are highly qualified and who have cross-cultural skills and international experience. The aim is to ensure that Azo’s plants and machinery provide reliable and safe operation, downtimes are kept to a minimum and procedures are optimised. For that reason, Azo offers comprehensive after-sales services, which also include:

  • hotline for specific customers and plants,
  • advice and assistance on any questions relating to service,
  • customer or user training,
  • inspection and/or maintenance contracts,
  • remote maintenance,
  • retrofitting.

By using appropriate double-crimp-and-cut techniques, it is then possible for the operator to remove the used or damaged screen inside the plastic liner and to install the new screen while using a new liner, also within a protected environment. The use of a new liner prepares the machine for further operation and for the next screen replacement.

Replacing the dosing screw

The dosing screw conveys the product to the screen cylinder in a continuous process. The speed and thus the dosing rate can be adjusted using a frequency converter, depending on the particular product characteristics. To make adjustments to the range of dosing rates, it is possible to change the dosing screw geometry or to vary the speed with the frequency converter. The machine also allows for the dosing screw to be exchanged under containment conditions. The machine is opened using an extraction device in the same manner as for screen replacement. A film liner provides reliable protection to stop dust from escaping.

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