{"id":11293,"date":"2024-09-11T05:20:58","date_gmt":"2024-09-11T03:20:58","guid":{"rendered":"https:\/\/shop.ptm-mechatronics.com\/stage\/?p=11293"},"modified":"2025-01-28T16:14:12","modified_gmt":"2025-01-28T15:14:12","slug":"die-regelbarkeit-von-ruehrprozessen-teil-1-warum-regeln","status":"publish","type":"post","link":"https:\/\/ptm-mechatronics.com\/en\/die-regelbarkeit-von-ruehrprozessen-teil-1-warum-regeln\/","title":{"rendered":"The controllability of stirring processes - Part 1: Why control?"},"content":{"rendered":"
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The controllability of stirring processes - Part 1: Why control?<\/h2>\n

Stirring processes are common processes upstream of production or even core processes. Reproducibility and reliability are two of the most important keywords.<\/p>\n

Stirring processes become really effective and, above all, intelligent with the right control system that regulates the process precisely.<\/p>\n\t

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Part 1 of our three-part series shows you which factors can be important for the mixing process. Be it to ensure quality or to optimize work steps. From this, we conclude that regulation and intelligent control are essential.
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Part 2 will then explain how a simple control system can work and what options are available. We will also look specifically at use in ATEX zones.
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Part 3 introduces you to a smart digital solution for comprehensive intelligent control. Manage multiple mixing processes clearly and save time.
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Before we get started: Our experts are of course also available to answer your individual questions at any time. Simply contact us at\u00a0+49 8134 25 797 0<\/a>\u00a0or\u00a0info@ptm-mechatronics.com<\/a>\u00a0or use our\u00a0Contact form<\/a>.<\/p>\n

Let's start with the question of why continuous stirring or agitation can be important in production processes:<\/p>\n

A large number of intermediate or end products that appear as liquids or textures are mixtures. Ultimately, they consist of several ingredients. These are homogenized into one another in the stirring process, such as chocolate or fruit gum mass in the food industry, creams or serums in cosmetics or paint in the chemical industry. If we take the example of paint, these include binders, pigments, oils, resins, fillers, additives and solvents.<\/p>\n

Some of these mixtures, such as the aforementioned varnish, quickly separate into their individual components as soon as they are no longer stirred. They must therefore either be stirred continuously or stirred before further use or filling.<\/p>\n

What factors are important for the stirring process?<\/h4>\n

The mixing process is subject to some passive and some active aspects that should be taken into account in order to achieve an all-round good result. We would like to list these below. We will present you with questions that you may have in this regard.<\/p>\n

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Viscosity of the stirred substance<\/h4>\n

The\u00a0viscosity<\/a>, The viscosity, i.e. the viscosity, of a stirred product can change during the course of a stirring process. There can be several reasons for this: 1. different substances with different viscosities are homogenized into one another during the process. Substances with a lower viscosity make the mixture more fluid, those with a higher viscosity more viscous. 2. let's take the example of stirring paint: the solvent is a volatile component in the mixture. It evaporates. As a result, the viscosity of the paint becomes increasingly viscous. Solvent is added and the paint becomes more fluid again.<\/p>\n\t\t\t<\/div>\n\t\n\t

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Questions: How can I measure the viscosity continuously? How can I adjust the speed of the stirrer to the different conditions? In the example of paint stirring, how much solvent needs to be added to restore the perfect viscosity? How can the agitator refill the solvent completely independently?
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Fill level in the agitator tank changes<\/h4>\n

1. the level in the mixing container can change due to evaporation of the substances, as mentioned above.<\/p>\n

2. some of the contents are removed for further use or for filling, for example via a suction lance or a filling system. Or further components are added to the contents so that the fill level rises.<\/p>\n

The fill level has a significant influence on the speed of the agitator. As the contents are removed, the resistance at the agitator decreases and the speed increases unintentionally. This could, for example, result in foaming due to over-intensive stirring or an increase in shear forces. Adding contents increases the resistance again. The agitator must develop a higher torque in order to keep the homogeneity constant.
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Questions: How do I get the agitator to recognize a lower and higher fill level and automatically adjust the speed and torque?
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Air consumption - potential cost savings <\/h4>\n

1. depending on the application, an agitator consumes more or less compressed air. There are also striking differences in consumption between different types of agitator, such as the energy-intensive vane motor and the economical\u00a0Radial piston motor<\/a>. High savings potential can be exploited here if the consumption of compressed air is measured. 2. some media do not need to be stirred continuously, but only shortly before consumption or filling, for example. This results in stirring pauses, for example at night. This allows the consumption of compressed air to be minimized, which is reflected not only in the environmental balance, but also in the costs.<\/p>\n\t\t\t<\/div>\n\t\n\t

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Questions: How do I measure my consumption accurately and how do I always adapt my process to the framework conditions in the most energy-efficient way possible?
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Different substances, different work steps<\/h4>\n

1. agitators become particularly flexible when they can stir different substances. This may require different speeds or torques, which must be set accordingly on the agitator.<\/p>\n

2. some processes consist of successive steps. For example, if a liquid component is added first, followed by a solid component. These two steps require a different speed in order to produce a homogeneous mass.
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Questions: How can an agitator carry out different work steps automatically one after the other without the need for personnel? How can I ensure that I do not have to manually adjust different standardized work steps each time? How can I adjust an agitator to the standardized stirring requirements of different substances without having to readjust it each time?
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An individual control system is the answer to all these questions. PTM mechatronics develops simple control technology for quick and easy use. The intelligent eco-Control also offers complex, digital central monitoring and control.<\/p>\n

Have we piqued your interest? Then don't miss parts two and three of \u201eThe controllability of stirring processes\u201c.<\/p>\n

Of course, you don't have to wait that long. You are also welcome to ask us your questions on the subject now. We will be happy to advise you personally on the use of an intelligent control system in your application. Get in touch with our experts:\u00a0+49 8134 25 797 0<\/a>\u00a0or\u00a0info@ptm-mechatronics.com<\/a>.<\/p>\n

PTM mechatronics - we bring movement into special environments.<\/span><\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n