Coperion and Coperion K-Tron will showcase their role as an innovative supplier of systems and key components with the process chain for the chemical, plastics and other industries at Achema 2015, this month.
The systems shown comprise a laboratory extruder ZSK 18 MEGAlab with a screw diameter of 18 mm for smallest production rates as well as a complete batch weighing system with a P100 batch weigh receiver combined with a KT20 loss-in-weight twin screw feeder by Coperion K-Tron.
The demonstration unit will show how state-of-the-art SFT weighing technology together with advanced control algorithms can effectively filter out vibrations which may be encountered in a typical plant environment without affecting the weighing accuracy.
The product portfolio will be completed with the presentation of an improved version of the patented RotorCheck system for Coperion rotary valves.
Feeding and weighing technology from Coperion K-Tron
Coperion K-Tron presents a complete batch weighing system featuring a P100 batch weigh receiver combined with a KT20 loss-in-weight twin screw feeder, mounted on a wheeled chart with a collection hopper.
Coperion K-Tron offers batch weigh receivers in various sizes, from 30 to 1,000 litres and the displayed unit combines a vacuum receiver with a reliable weighing system.
The resulting combination allows ingredients to be conveyed and weighed so that accurate batching of ingredients can take place on either a cumulative or sequential basis.
The KT20 loss-in weight twin screw feeder is ideal for accurately adding smaller amounts of additives to the batch.
Twin screw feeders can handle more difficult materials such as pigments, sticky, bridging or flooding powders, fibre and fibreglass.
A mobile bag dump/sack tip station is being shown as the product source for the P100 batch weigh receiver at the show in June.
The unit consists of a feed bin equipped with a dust hood and bag rest module, mounted in a frame equipped with casters to make it mobile.
The bag dump station is ideal for emptying bags into the system in a dust free manner and material pick-up from the feed bin can be done via pick-up wand, feeder, discharge valve or rotary valve.
The unit being displayed at Achema features a Coperion ZXD 200 blow-through rotary valve with FXS (Full Access System).
Smart Force Transducer weighing technology for high precision weighing
High demands on accurate feeding, batching and metering of bulk solids can only be met through a highly developed weighing technology.
Coperion K-Tron pioneered vibrating wire technology for the process industries, and today continues its leadership with the patented Smart Force Transducer weighing technology.
The 100 per cent digital design is based on a single wire weighing technology, requires no calibration and features a resolution of 1:4,000,000 in 80 ms.
RotorCheck protects rotary valve and product
An improved version of the patented RotorCheck system for Coperion rotary valves will be displayed on the Coperion booth at Achema, the system is based on a monitoring device that detects any metallic contact between the rotor and the housing.
This contact may result either from the presence of foreign particles or from a process malfunction, such as a sudden increase in product temperature, which may cause the rotor blades to expand and grate against the housing.
In all these cases, RotorCheck not only prevents serious damage to the rotary valve itself but also protects the product, which in most cases is conveyed by a pneumatic conveying system, against contamination by metallic particles (abraded metal).
Typical examples are the handling of polycarbonate pellets for the production of CDs and the handling of insulating polymers for high tension cables.
Highly reliable in operation – no false alarms
With the RotorCheck system, the rotor is insulated from the housing and subjected to an electric charge.
Any metallic contact between the rotor and the housing causes a drop in voltage, which is detected by the system and signalled by an alarm.
The evaluation software operates in conjunction with a highly efficient microcontroller, effectively eliminating false alarms and ensuring the RotorCheck operates with a high degree of reliability.
The built-in electronic self monitoring system further improves reliability: any interruption in the circuit – caused by a broken cable, for example – is also signalled by an alarm.
Achema 2015 takes place from June 15th-19th in Frankfurt, Germany. Coperion can be found at booth D34 in Hall 5.
