One of the most common techniques used to transport bulk goods is pneumatics. Using air or gas, the product is transported with high precision and hygiene. Pneumatic conveying offers several options. Bulk goods can be transported with negative or positive pressure, you can transport the goods by dilute-phase transport or dense-phase transport, and you can choose gas or air.
Pneumatic Conveying (3D)
Pressure Vessel (3D)
Receiving Hopper (3D)
Dilute phase transport
Pneumatic Conveying
Pneumatic Conveying
Pneumatic Conveying
Pressure Vessel
Pressure Vessel
Pressure Vessel
Receiving Hopper
Receiving Hopper
Receiving Hopper
Process:
Conveying & HandlingWith pneumatic conveying, bulk goods can be transported quickly and hygienically. When working with negative pressure, we call this suction transport. Powders, grains and granulates are moved using sucked-in air or gas. These products can be transported from one or more entry points to a receiving unit. You can also transport using overpressure, where the powders, grains and granules are moved by a propelling air or gas flow.
Substances can be transported in different phases and densities. Depending on the product to be transported and the desired transport conditions, you can choose dilute-phase transport or dense-phase transport.
In dilute-phase transport, the material is pneumatically mixed with air or gas, causing the material to be transported ‘in suspension’. This is characterized by a relatively high transport speed and a low load factor. This minimizes product damage and enables both drying and cooling during transport. A high-pressure blower or vacuum pump is often used as a power source in dilute phase transport. The dilute phase transport system is reliable, robust, and suitable for situations with uneven supply.
In dense-phase transport, solids are propelled through the pipeline as a ‘wad’, using air or gas. This type of transport is characterized by relatively low transport speeds, with relatively low air/gas consumption. A medium pressure compressor is often used as a source. Two systems can be distinguished within this type of transport, namely a dense phase with high-pressure locks or vacuum and a dense phase with transmitting barrel transport.
Thanks to high-pressure locks, bulk goods can be supplied in a transport system even at high pressure differences. This involves low gas consumption and high loading. Transport via high-pressure locks is particularly suitable for a continuous production process in which minimum product damage is required. With negative pressure, a vacuum is created to suck the product to the right place.
Transmitting barrel transport involves low speed, high loading and low gas consumption. This mode of transport is especially suitable when minimal product damage is allowed and suits a discontinuous production system, within a dust-free environment. The system is free of rotating parts.
Every Pneumatic Conveying System Dinnissen builds starts with a question: what does your process actually need? Every material behaves differently during pneumatic conveying. Flow behavior, bulk density, particle size, hygiene requirements, required transport distance and available space all influence the final design. That is why we look at the full picture before we engineer your conveying system. What are you transporting? What conveying capacity do you need? Which hygiene standards apply? How many entry and exit points are required? And how should the conveying system fit into your existing production line? The result is a Pneumatic Conveying System that fits your product, your process and your production environment. No two machines are the same, because no two processes are the same.
Dinnissen offers various solutions for pneumatic conveying. We have systems that work with air pressure, but also solutions with gas. The product can be temporarily diluted with air or gas, allowing high transport speeds to be achieved. In addition, you can move the product as a whole, using high-pressure locks or transmitting barrel transport.
In addition to the above solutions, Dinnissen has developed a special slow-flow transport system, suitable for continuous production processes with strict hygiene requirements. The focus here is on fast and thorough cleaning, including ultra-dustproof sealing of the transport system. As the ratio of loading to conveying air is optimal, relatively low transport speeds occur. This makes the system particularly suitable for breakage-sensitive, abrasive and greasy raw materials, such as milk powder, sugar, sand, chalk, milk, and cocoa.
Within the slow flow concept, an extremely compact receiver system is sufficient, which is quick and easy to clean and can be easily integrated into new and existing situations. Moreover, it has low gas and energy consumption, which makes a compact air handling system and a small air filter sufficient.
Depending on your preferences, the slow-flow transport system can be automatically cleaned and made ultra-dustproof. It is also possible to increase capacity. In addition, high-precision measuring and weighing equipment can be integrated, you can create under- or overpressure, choose inflatable seals or automatic cleaning by air. As a source for generating the transport medium, a medium pressure blower or compressor is often used, with an overpressure of 0.2 to 0.5 bar.
In addition to the above options, we also have closed-loop transport systems. As the name suggests, it’s a closed-loop system, in which the transport medium air is replaced by an inert gas such as nitrogen. This creates an explosion- and oxidation-free transport solution. To keep gas costs at a minimum, the system is equipped with an innovative gas recovery system.
With pneumatic suction transport, the pump is placed behind the receiving unit. Thanks to the negative pressure, there is hardly any dust emission even when the hatches or coupling points are opened. It’s therefore ideal for situations with high demands on hygiene and a dust-free environment. An additional advantage is that suction transport often does not require additional transport air cooling. A precondition, however, is that the raw materials are dosed somewhat regularly.
In pneumatic blow transport, the pump is placed at the beginning of the system. Blown air makes it possible to transport raw materials from one entry point to one or more receiving units. It’s also possible to indicate where the product should go, through a changeover system. An additional advantage of pneumatic blow transport is that dirt and dust cannot enter the production process.
Download our brochure or the datasheet with all options, models, and measurements, or freely contact one of our experts.
Dinnissen offers a wide variety of pneumatic and mechanical systems for conveying powders, grains and granulates. Besides pneumatic conveying, Dinnissen has a wide range of techniques for handling drums, bags, Big Bags, bag-in-boxes, and various other forms of packaging. With high-quality process knowledge, Dinnissen provides efficient systems that meet all applicable international guidelines.
System integrator Dinnissen optimizes and innovates your production process with tailored solutions: developed, manufactured and tested in-house. From product intake, transport, dosing and weighing, mixing, grinding, sieving and packaging to full automation and control. We maximize the performance and efficiency of your entire process.
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We also considered other options but on the points we considered most important - flexibility, cleaning, short mixing time, and a homogeneous end product - Dinnissen scored best.
Sam Dimassi- Owner - Nutri-Dynamics
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Previously, we had standard times in the mixing process of 14 - 15 minutes. With the Pegasus® mixer we achieve a mixing time of 60 seconds per batch.
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Fully automated sampling
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Supplied entire installation
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