The Venturi aspirator is an innovative device that exploits the laws of physics to create a vacuum flow without using the movement of mechanical parts. Thanks to this feature, it is widely used in various industrial sectors, including the conveying of plastic granules.

In this article, we will explain how the Venturi vacuum cleaner works, the advantages it brings and its applications. Then we will focus on the Venturi vacuum cleaners designed and manufactured by Vismec for conveying plastic granules.

Venturi suction unit: how it works

The operation of the Venturi vacuum cleaner is based on the so-called “Venturi effect”, a principle of the physics that exploits the pressure variation created by the passage of a fluid through a variable-shaped duct. This effect creates a low-pressure area that allows air or other substances to be sucked in, without the need for moving parts or motors.

In order to better understand the mechanism that regulates this unit, here is a description of the operating phases of a Venturi vacuum cleaner.

  • Engine fluid injection. A fluid, usually compressed air, is introduced into the vacuum cleaner through a special duct.
  • Passage through a narrow duct (nozzle). The fluid is subjected to an acceleration as it passes through a narrow area of the inner duct, increasing the speed and reducing the pressure according to Bernoulli’s principle.
  • Creation of the suction zone. After the narrowing, a low-pressure zone is created. It allows air or materials to be sucked from a side or dedicated opening.
  • Mixing and outlet. The aspirated fluid mixes with the motor fluid and is expelled through the outlet of the device.

Thanks to this simple and effective operation, the Venturi aspirator offers several advantages. The first is the absence of moving parts, which eliminates the need for mechanical maintenance and extends the life of the unit. Another advantage is a usually very compact design, easy to integrate into existing systems. Finally, it is a very reliable suction system, that suits even the most demanding operating conditions.

The applications of the Venturi vacuum cleaner are many and varied and include, for example:

  • chemical industry, where the device is used for conveying and handling powders and fluids;
  • food industry, where the aspirator is used to transport dry ingredients such as cereals;
  • plastics industry, with particular reference to plastic granules conveying.

In granule conveying, the Venturi vacuum cleaner ensures a continuous and uniform flow of materials, reducing the risk of blockages and optimising process efficiency. In the next section, we will take a closer look at the use of this device, introducing the solutions designed and manufactured by Vismec.

Venturi suction in granule conveying: Vismec solutions

The Venturi vacuum cleaner designed and manufactured by Vismec is an ideal solution for conveying plastic materials such as masterbatches or granule additives. Freestanding and powered by compressed air, it is particularly suitable for low volume production and can be installed directly above a drying hopper. Its design allows a smooth and continuous feeding process, with the possibility of adjusting the conveying air power by means of flow regulator.

The main technical features of the Venturi vacuum cleaner we offer include:

  • reliability over time, stable and safe operation even under continuous use;
  • solid and compact structure, entirely made of stainless steel to guarantee robustness and durability;
  • dust separation efficiency, the spiral lid and the unique cyclonic vortex improve suction and separation performance;
  • advanced filtration, equipped with a stainless steel expanded micro mesh filter, it is easily washable;
  • intelligent monitoring, integrated with a capacitive sensor to monitor the material level and a visual alarm to warn of any shortage;
  • simple control, that is a basic simple, intuitive and functional control system to facilitate adjustment by operators.

The advantages of this unit include, as already mentioned, the absence of mechanical moving parts and the consequent reduction in maintenance costs. The vacuum cleaner is also extremely silent, helping to reduce noise in the production environment and the associated inconvenience.

Thanks to its structural and functional characteristics, the Venturi vacuum cleaner we propose is ideal for handling the conveying of plastic granules over short distances and for quantities up to 70 kg/h. These elements make it perfect for short-scale applications.

Are you looking for innovative and effective solutions for granule conveying in your plastics company? Contact our team: we will offer you technical support and personalised advice to improve the performance and efficiency of your conveying processes.