Systems of energy supply in the process of transformation

Easily can be understood by plastics food transport and supply of raw materials within plants of transformation of thermoplastic materials. This can be done from silos, but also, simply, from sacks, the case is that the material should be transferred from the place where stored until processing machines.

Currently a transforming company can choose by centralizing the entire process of food or have an individualized food of their machines. In many cases the centralized power is more than justified, but in others, the transformer opts for other solutions.

So you can purchase various equipment present on the market.

Maguire, represented in Spain by Alimatic is an interesting technology. An advanced method to load material into a Gravimetric feeder makes it possible to measure colorant and additive in a machine of plastics processing with a degree of accuracy that far exceeds what has been achieved with a volumetric feeder. Even with the addition of an advanced cargo system, feeders FGM Maguire did not cost more than the comparable volumetric feeders and provide the precision, consistency and characteristics of higher gravity systems data generation.

The feeders are available with a processing capacity of up to 16 kg per hour and can be mounted directly in the mouth of the majority of machines for molding or extrusion machines. The device of load, a direct descendant of the Chargers venturi that Maguire has produced for many years, carries material to the feeder from a special box of cardboard, drum or another container. Instead of loading in a continuous or intermittent, charger fills rapidly and completely the feeder only once, in a signal of the controller of the feeder which indicates that the level of color or additive has fallen to 10% of the capacity of the hopper from the feeder. Thus the role of measurement of loss in weight of the feeder, which is what makes a gravimetric system, so must continuously track and compensates for errors in dosage without interference or distortion due to the addition of new material. As a result, feeder retains the dosage in an injection close tolerances to another and makes it for several hours as the levels of material in the hopper are descended steadily.

FGM Maguire feeder is mounted in the processing machine exactly as the volumetric equivalent that Maguire has offered it for a long time. Differs in five aspects of gravity feeders of the competition: it costs no more than its volumetric equivalent, more precise dosing, automatic adjustments to maintain the tolerances, handling of the vibration and protection for the engine.

Another interesting product is the mini-alimentador electro-pneumatic JPV-1 which provides equipment J. r. Puchades. He is noted for its small size and consists of a small cone of aluminium and a cylinder of methacrylate with an air filter that prevents the emission into the atmosphere of dust. Feeds by venturi effect, whose load is automatically adjusted to the use of the machine.

The feeders ECB Raorsa, small single phase and sobre-tolva, provide high power and high speed. They are ideal for small machines. They have a capacity to transport up to 400 kg/h and it is capable of aspiring material to 4 metres in height or 7.5 metres of horizontal length.

The model TBE, by his part, is a small feeder monofásico, of high power and big speed. The hopper of feeding and the engine go separate grouping the advantages of the feeders monofásicos with the advantages of the feeders of accionamiento independent. His capacity of load is of 400 kg/h and can aspire to 4 metres of height or to 7,5 metres of length in the horizontal plane.

BLE Is also a powerful feeder trifásico of on-supplying hopper by Raorsa, instrumented with alarm and function of unblock which allows to free the tubes of feeding if these remain obstructed. It is adapted for machines of average and big size. His capacity of load is of 450 kg\1h\2and can transport material to 4 metres of height or to 8 metres of length. The model TAE is a feeder trifásico instrumented with alarm and function of unblock which allows to free the tubes of feeding if these remain obstructed. The hopper of feeding and the engine go separated for a simpler installation. This model incorporates filters of paper to protect the engine of the dust. His capacity of load oscillates between the 350 kg/hr and the 2000 kg/hr, can aspire from a height of 3 metres in the smallest models until 13 metres in the most powerful feeders or from the 5 until 100 metres in the horizontal plane.

Imvolca also provides feeders that are used for feeding material in pellets either milled to production machines. With variable capacity from 25 to 800 kg/h, there is the possibility to be equipped with proportional valve. The triphasic floorpan vary from 0.76 kW up to 2.2 kW. Cycle (load - cleaning - rest) fully automatic. These teams can also be used for centralized systems of food.

Duga (represented by Centrotécnica) offers a range of feeders tyres of material, three-phase which have not only innovative technical solutions, but are competitive in price and offer the possibility to become a centralized and fully automatic feeding installation easily. The card Ready, exclusive of Duga, allows the recognition of up to 64 feeders. As grows the need in the production plant, we can go adding main vacuum unit, with a simple connection between them.

In the basic configuration, such as individual feeder, command box is located on the ground, on the protection of the applicant group box. Control card allows you to pause time parameters regulation, load, cleaning of the filter, proportional valve with signs of a lack of burden, filter cleaning, inspection bearings, high temperature and thermal block the contender group.

All Duga feeders AT series are equipped with a particular system of cleaning of the filter, called Battifiltro which, unlike other pneumatic feeders, does the cycle of blown through compressed air, but shakes the bearing structure of the filter and prevents the diffusion on the air of dust. Even in the case of particularly difficult materials or with large amount of dust is possible to install a filter on Earth, whose cleaning ensures, also with the Battifiltro system. Removed dust from the filter is contained in a separate container. About Hopper only mounted a filter's network can have different diameters of step, ensuring the maximum despulverización of the material.

Many enterprises have adopted centrally on their machines, on the one hand feeding systems, because often there are many materials to be handled, but also because in the modern production there is a constant change of materials. Modern food also helps when several machines use the same raw.

There is also the need to dry, dehumidifying, mixing and coloring different materials and important reasons as saving storage space.

A centralized food system is a complete logistics system dealing with feed machines continuously and regularly. It deals with the whole of the material at the factory, from its storage, passing through automatic dosing units and mixing until you reach the dryers and Mills concerned with waste generated by these machines. A line of such control monitors the entire process, from the bombs of aspiration, filters, chargers, dehumidifiers, gravity dispensers, etc., as well as facilitate the scheduled maintenance and end user management.

Transport systems, which may be empty, and other equipment as feeders or Chargers come into play (single phase, three phase, feeders Venturi effect, feeders with spindle, force-feeding) dehumidifiers for drying of materials and equipment and installations of volumetric and/or Gravimetric dosing, mixers of various types (for example, mechanics and flat bottom)

The weighing system for the control and the level of material stored in silos record also assumes importance, and even stock management systems.

Dehumidifiers, the elements to be taken into account are its size and its ability and possibility to be mounted on injectors, the level of residual humidity that can leave in the material before the transformation, energy consumption, its dew point, its coupling with hoppers, and if you have control with microprocessor.

When it's gravity dispensers is valued consistent dosage, easy installation and use, as well as if they are applicable to various types of lines, for example of extrusion, blow molding and injection. It is also important to know how many components can be dosed and mixed. Usually you can install directly on the machine replacing the hopper loading, or in the soil to feed one or several machines simultaneously.

In these systems, which operate with several components, each component is dosed by valves or dispensers according to the percentage of dosage and the characteristics of the material to dosage.

The volumetric dispensers are valued by its mechanics, its setting and that incorporate the concepts of security and inspection facilities.

The torque of the engine, which influences the repeatability and precision at different speeds is also important. The incorporation of a control is of utmost importance

because guide the operator in the boot of the machine, who only has to enter a few parameters, such as weight and percentage of masterbatch, so that the own control automatically calibrate equipment and adjust the work of dosage. Allows changes of color, selection or creation of various formulations.

Mixers can be of many types, from simple mechanical mixers that are installed on chute, up to complex systems for industrial applications for the manufacture of raw materials.

In short, a complete line of food as a whole is composed of many elements, which can be purchased individually. However, a good part of the providers of this type of equipment is also prepared to carry out studies of the specific needs of each transformer to propose turnkey solutions.