Powtech virtual talks ATEX

Posts tagged Vacuum conveying

2nd webinar recording: Metal Powder Handling in the Additive Manufacturing Industries (AM)

Powtech virtual talks ATEX

Advanced Powder Handling in the Additive Manufacturing industries –

Safe Vacuum Conveying and more around 3D-Printing |

There are various powder handling tasks around Additive Manufacturing. Feeding the machines with new powders, emptying them and recycling the powder with sieving, combining/interlinking various printers (multi-machine layouts); this all requires a very flexible powder handling system.

Usually polymer powders are relatively easy to handle, however metal  powders are more demanding. Criteria like high bulk density, abrasiveness and flowing properties are not the only challenge. Conventional mechanical conveying systems (e.g. auger- or screw-conveyors) are often not able to handle demanding powders like stainless steel-, titanium- or alumina-powder.

Moreover they include potential ignition risks since they can create mechanical friction and heat, but also electrical sparks. Hence they are not the preferred choice when it comes to Explosion Protection (EP) or ATEX requirements.

With the growing demand in using larger printers and in greater quantities, the requirements for powder handling are constantly rising and the tasks are getting more complex. One question could be of how to integrate a sieve in the conveying process and allow recycling of the metal powder whilst maintaining a high throughput rate.

A combination of conveying and sieving is the answer to that which  combines the required material handling and sieving within one machine. Although most of the powder handling is still done under atmospheric  conditions, an inert version for the powder transfer and sieving is also available. Latest advances from various research and development projects are also presented for the first time to a larger audience.

Further contents and links:

Do you have a special requirement in the field of metal powder handling?
Ask our application experts, we will be happy to help you. >> Contact

Video: Volkmann in the canning factory

Video: Volkmann in the canning factory

Gentle conveying of “solids & liquids” |

This blog is also about promoting applications that may not be so commonplace and obvious. This has resulted in numerous interesting and new ideas in the past. Thanks to the highly usable vacuum, not only all types of powders and granules can be conveyed, but also liquids. Even viscous fluids such as applesauce, oil or greases can be pumped in theory, provided they have a certain flowability (viscosity).

A Japanese customer who packs chanterelles, mushrooms and adzuki beans in cans, among other things, was so enthusiastic about the sheer power of the vacuum that he wanted to try it out in his canning factory.

In particular, the fact that there are no moving mechanical parts in the flowing product stream is the decisive factor for gentle conveying.

The successful vacuum conveying experiments with the mushroom / water mixture shown in the following video led to the installation of 20x vacuum conveying systems from the Volkmann company for different packaging lines. The liquid also prevents the oxidation of these very sensitive bulk goods.

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#LiquidConveyor #Mushrooms #Foods # ConveyedGoodsInLiquid
#Vacuumconveying #VolkmannGmbH # MushroomsConveyedInLiquid #SolidsInLiquid

White Paper Food / Applications in the food sector

White Paper Food / Applications in the food sector

This interactive document uses numerous of current examples to describe the advantageous use of vacuum conveyors and powder handling solutions in the food sector.

Hardly any other industry processes so many different solids and bulk goods. The inserted links make it possible to deepen the most diverse aspects and these lead precisely to further examples, descriptive videos and more in-depth specifications. It is shown, for example, how a single-variety separation can be achieved in the seed sector or how segregation can be avoided.

Other important topics such as ATEX and explosion protection, gentle conveying, provision and dosing of recipes and, of course, hygiene aspects and cleaning are in focus.

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    POWTECH virtual talks – webinar recording ATEX and explosion protection

    Powtech virtual talks ATEX

    POWTECH virtual talks |

    The professional handling of dusts and powdery solids requires a comprehensive consideration of the task. In addition to the purely technical questions relating to feasibility and implementation, numerous boundary conditions must be taken into account.

    One of them is the possible use in potentially explosive areas. The crux here is that these areas can not only be predefined from the outside, but potentially only arise through the actual conveying task or the conveyed goods themselves.

    This is due to the fact that every substance which is flammable, in either a powdery or dusty form with fine particulates of less than 500 µm, also has the capability for a dust explosion.

    Conventional, mechanical conveyor systems often reach their limits of use. Pneumatic vacuum conveying systems, on the other hand, can be designed without ignition sources and are therefore particularly suitable for such purposes. Both for organic compounds and for inorganic substances such as metal powders.

    As an extract from the “ATEX, Explosion Protection and Powder Handling” seminars that take place several times a year, this short video gives an initial insight into this extremely complex topic.

    Container emptying station

    Container emptying station

    Emptying powder and bulk goods from containers |

    At companies that process bulk materials, the raw products are often delivered in containers. This leads to the question of how these containers can be emptied as quickly and efficiently as possible.

    Container emptying station

    Our container emptying station has been developed in such a way that its loading can be easily and individually adjusted.

    As shown here, the container is placed on the station by forklift truck and the discharge valve is manually opend.
    The container is emptied by gravity.

    The bulk material is then gently introduced into the process by means of vacuum conveying.

    The container docking stations can also be used for metered filling of containers.

    Would you like to empty powder from containers?
    Then this product may also be of interest to you -> VIAS

    Would you like to learn more about the topic or do you have a specific task?
    Our application experts will be happy to help you. >> Contact

    #Container emptying #Weighing #Dosing # VacuumConveying #PowderHandling #VolkmannGmbH #ATEX

    Reach out for the stars

    Reach out for the stars

    Reach out for the stars
    (with 3D printed rocket engines) |

    Handling of larger amounts of Metal Powders in the aerospace industries

    With the modular design of the Volkmann Vacuum Conveyors and Sieves they can be easily adapted to larger transfer rates, required either by a Multi-Machine layout with centralized powder handling or driven by substantially bigger printers.

    The following article from Launcher USA and AMCM GmbH (an EOS Group company) highlights the use of Vacuum Conveyors, PowTReX sieving and powder recovery stations in such a case.

    Click to the last page (101) in particular where Volkmann is mentioned twice

    or start here at page 89 to read the full story.

    Full Metal AM edition:

    Follow Launcher on and AMCM GmbH on

    In addition, learn more about the beneficial use of advanced metal powder handling at Materials Solutions U.K. (a Siemens company) under this Link

    #PowTReX #Launcher #AMCM #MetalPowderHandling #MaterialsSolutions #VacuumConveying #VacuumConveyor #VolkmannGmbH

    How does the powder get into the machine without a ladder?

    How does the powder get into the machine without a ladder?

    Vacuum conveyor with lifting and swiveling columns |

    In many industries it is still common practice to fill filling systems, presses or containers by hand from above.

    This process is usually unergonomic for employees and rather time-consuming. This procedure often harbors undreamt-of dangers, for example that of a dust explosion.

    360 ° rotatable lifting column with vacuum conveyor

    360 ° rotatable lifting column that simply brings the vacuum conveyor onto the machine

    An alternative to automated filling are lifting and swiveling columns that are equipped with a vacuum conveyor for material transfer. The vacuum conveyor sits in a holding fork that is mounted on the lifting column and can be steplessly raised and lowered.

    Would you like more information on the topic or do you have a process that you would like to make safer, more effective and more ergonomic?
    Our application experts will be happy to help you. >> Contact

    #LiftingColumn #LiftingAndSwivelingColumns #ProcessesSimplify #MakeProcessesBetter #BulkMaterialHandling #VacuumConveyor #PowderHandling #VacuumConveying #VolkmannGmbH

    This is how bread crumbs are brought to the fish

    This is how bread crumbs are brought to the fish

    Big bag emptying and conveying of bread crumbs |

    Bread crumbs are often used in the production of fish fingers and other fish dishes. The task was to empty the big bags filled with breadcrumbs and then to feed the breadcrumbs to the machines for further processing.

    This is how bread crumbs comes on the fish

    A cost-effective solution was sought in order to empty the big bags and continue to use the existing crane. The customer then preferred to use mini hoppers as emptying aids. These have a small overall height, are easy to handle and cleaning when changing products is easy.
    Big bag emptying and conveyance of breadcrumbs

    The big bags are emptied and transported to the machines by four VS 250 vacuum conveyors. 12 tons of breadcrumbs are conveyed and processed every day.

    Do you find the application interesting and would you like to find out more about the topic or do you have a specific task?
    Our application experts will be happy to help you. >> Contact

    You can find more videos and application examples here!

    #BreadCrumbs # FishFingers #BigBagUnloading #BulkMaterialHandling #ProcessesSimplify #OptimiseYourProcess #VacuumConveyor #VacuumConveying #VolkmannGmbH

    Make your workflow faster and more effective

    conveying coffee Martermühle

    Conveying coffee beans |

    The coffee roastery client Martermühle: rates itself highly. “Fragrant, first-class, fresh coffee – this is our promise to you. We only purchase the best beans from suppliers we trust and from plantations we know.”

    The coffee roastery Martermühle also has the same quality claim when new equipment should be planned and procured for the improvement of the work processes. A modern filling scale should be completed on a new transport and supply system for coffee beans. The amount of coffee beans processed daily totaled 500 kg – the restriction on best quality and small lots should guarantee a fresh coffee aroma.

    Originally, coffee beans were poured in small amounts by hand from barrels into the collection hopper. The then placed filling unit fills doses of coffee in different retail containers and sealed and marked them. The process was improved to be more work ergonomic, cleaner and simpler but without taking away from the unique aroma of the coffee.

    After test runs, it was decidedto use the Volkmann VS 200 LT vacuum conveyor. The slow transport provided by the exceptionally compact and quick and easy to clean Volkmann conveyor system proved less stressful to the comparatively sensitive coffee beans, and this was critical.

    The extraction of material by the suction lance directly from the barrel now makes loading the filling scale operator friendly, quick and safe. The conveyor system can be easily taken apart and cleaned with minimal intervention and without tools for pending grade changes.

    What our clients are saying today about the selected solution:

    “For our employees, the work situation has been considerably simplified, and the design makes it possible to clean it quickly.“

    Do you also have a process that you want to make safer, more efficient and more ergonomic?
    Our application experts will be happy to help you. >> Contact

    #Coffee #BulkMaterialHandling #OptimiseYourProcess #VacuumConveyor #VacuumConveying #VolkmannGmbH

    Resin granulate – A clean solution in the EX aera

    resin granule

    Clean Solution in the EX area |

    The Production of care and hygiene products requires the transport and dosage of highly flammable resin granules in a mixer. Minimum ignition energy of the substance to be transported is 3 mJ (MIE 3 mJ).

    In the previous procedure, drums were filled with resin and heated up in ovens; then the liquified resin was mixed with another liquid in a stirred vessel. This time-consuming and comparatively cumbersome to master process led to production bottlenecks.

    The customer turned to us with its request for a safe, yet, at the same time, flexible work environment. In close consultation between the provider and the user, they agreed to design a flowing and space-saving process.

    Big Bag Station

    After the process conversion, the resin granulates will no longer be prepared in drums but rather in bulk bags. The material to be transported is now placed centrally and in the easily reachable material storage above two bulk bag unloading stations. Whereby the bulk bags are alternatingly unloaded and standstill times for container changes are avoided.

    Two Volkmann Conweigh vacuum conveyors suck the material from here and transport it over 60 or 85 m distance and 12 m high to the stirred vessel with a conveyor capacity of 2 tons per hour.

    The Conweigh systems ultimately supply 100 precisely measured grams of the transported material to the stirred vessel where it is heated and mixed with other liquids.


    Now various flammable materials from the client can be safely transported with the selected system. Studies have shown that the suction lines can be almost completely emptied so that additional cleaning measures are not necessary in the case of pending material changes which contributes to the desired high flexibility in the system. The entire system is designed and made in conformity with ATEX.

    The client chose the VOLKMANN solution for the new design of the process not least because of the close cooperation and competence specifically found in explosion risk prevention. The proposed solution also appeared attractive on account of the hygienic aspects and the operation and maintenance friendliness.Volkmann considers the user’s needs with knowledge and experience and therefore develops optimal results and processes.

    Would you like to find out more or do you have a specific task?
    Our application experts will be happy to help you. >> Contact

    ATEX #BBU #Conweigh #Resin #CriticalSubstance #Granule #weighing #dosing #Mixer #StirredTank #BulkHandling #PowderHandling #VacuumConveying #VolkmannGmbH

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