METRO G med

The extensive family of material loaders allows for an optimal selection for any required material throughput. The units are available in 0.5, 1, 3, 6 and 30 liter volumes. In addition to these different unit sizes, different vacuum valve combinations enable an individual solution tailored to your needs.

A machine loader version is available for conveying hygroscopic materials with small throughputs or when space is limited. The discharge module of the device has no discharge flap and is mounted directly on the feed throat of the processing machine.

The advantage is that you do not need a machine hopper and can work with a small supply of material. This is especially important for dried materials and the material dwell time is reduced to a minimum.

All material loaders bodies are designed to be as smooth as possible and are made of stainless-steel 1.4301(V2A) and then electropolished. This allows you contamination-free operation and easy cleaning due to the high surface quality.

The strong stainless-steel sieve is automatically cleaned by implosion after each conveying. This guarantees constant and reliable material conveying and reduces the maintenance costs for the unit.

Due to the high-quality seals used in the METRO G med, the material loader operates reliably, and the environment remains dust-free. The HEPA H13 implosion filter is supplied as a standard and enables use in the clean room.

The membrane implosion vacuum valve offers the same functions as the implosion vacuum valve but works without compressed air. Instead, the vacuum required for the switching process comes from the conveying system, which opens and closes the valve. This valve is therefore ideally suited for use in clean room applications.

The dedusting unit removes dust from high performance engineering plastics directly at the hopper loader, sending them to the central dust filter via the air flow. These expensive materials, now dust-free, can be processed without further delay. The HEPA H13 implosion filter installed as standard enables the machine to be used in clean rooms.

All surfaces in contact with the product are made of stainless steel or FDA-compliant plastics and thus the METRO G med hopper loader meets all requirements according to FDA 21 CFR.

• Surfaces that come into contact with granulate have a maximum roughness of 0.8 μm Ra
• Optimal cleanability: no dust corners, rounded transitions, completely removable discharge flap
• Filtered ventilation air (FDA-compliant HEPA H13 air filter)
• Detailed documentation of all components used in the construction of the material loader

The material loader inlet flaps make sure that multiple loaders can work together properly in a system. They limit the amount of vacuum required for a group of loaders connected to a coupling station. Thus, no check valves need to be installed in the material flow at the coupling station which would result in a reduction of conveying capacity and increased material abrasion.

An additional benefit of the plasma-nitrided inlet flap is that it acts as a deflector plate at the material inlet, protecting the body of the unit from wear.

A level sensor is installed as standard in all material loaders from 3 liters. The sensor ensures an efficient conveying process by conveying the optimum capacity with each conveying cycle.

The large material outlet with a stainless-steel discharge flap is abrasion-resistant and meets all requirements for applications in the medical and pharmaceutical industries.

The angled design ensures complete emptying of the material loader after each conveying cycle.

A discharge flap with spring damper prevents the flap from completely closing when it is not under vacuum. If there are granulate on the discharge flap at the beginning of pneumatic conveying, these are first sucked away. With increasing vacuum, the flap is then pressed against the spring and will close completely.

The counterweight of the discharge flap is mounted on the outside so that the current status of the conveying cycle is visible at all times. Due to the easy accessibility, service work can be carried out uncomplicatedly and quickly.

All METRO G med material loaders have a lid with a safety interlock that secures it in the open position. This allows to clean the unit easily and safely.

Optimise or expand your system to your production needs with our options and numerous medical compliant accessories:

• Suction boxes with integrated HEPA H13 filters and dust wiper to prevent contamination.
• Proportioning valve with wear-resistant rotary piston and without seals that come into contact with the product.
• Shut-off slide valve with dust wiper to prevent contamination.
• Telescopic suction pipe with HEPA H13 filter and a remote pipe coupling with a quick-action closure provides both loading adjustment and sealing against bypass air.
• Machine hoppers
• Pipe material according to specification 318-08.0.0B

All our accessories from the medical line are easy to clean and suitable for cleanroom applications. The parts in contact with the material are made of stainless steel or electropolished stainless steel with smooth surfaces and have a maximum roughness of Ra 0.8 μm. Detailed documentation is supplied.

All METRO G med material loaders are equipped with the C control box. This is our most advanced control box with alarm and status display, on / off button and other functions directly on the unit.

METROnet AE and AN is the ultimate networkable system toolkit for complex material conveying systems with either a soft PLC or an S7 PLC with WEBpanel and decentralized CAN bus nodes for connecting peripherals.

All METROnet controllers are fully integrated into the CONTROLnet platform and can be connected to other controllers via Ethernet.