Digitalisation in dispensing technology: Walther goes digital
23 Sept 2021, 10:00:00
The reliable conveying, dispensing and application of liquid and pasty media is a key factor for the functionality, quality and safety of products across almost all industrial sectors. For more than two decades, Walther Systemtechnik GmbH has been developing dispensing components and dispensing systems and has established itself as a competent partner for standard solutions as well as customised turnkey systems.
With its current Industry 4.0 product family (I4.0), Walther Systemtechnik is consistently pursuing the path of digitalisation in dispensing technology. The aim is to sustainably secure the future viability of industrial dispensing and application processes. Within the product family, relevant process and condition parameters can be recorded in real time using integrated sensor technology and transmitted via analogue and digital interfaces – for example to the machine or line control system. This opens up new potential for users to increase process capability, overall equipment effectiveness (OEE) and product quality.
An illustrative example is the WSV spray valve. Developed entirely from the ground up, this valve for the application of low- to medium-viscosity media is characterised by a highly integrated design with minimal space requirements. It combines an integrated pressure sensor, a valve heater with controlled temperature management, and the complete electronics for control, monitoring and evaluation of process data within a compact system.
For connection to higher-level systems, the WSV spray valve is equipped with an analogue output, four digital inputs and outputs, and an Ethernet interface. These enable comprehensive connectivity to peripheral devices as well as remote parameterisation and remote diagnostics of the valve. In addition, software add-ons and firmware updates can be installed and activated retrospectively as required, providing the operator with a high degree of flexibility and investment security.
Thanks to its compact design, the smart valve can be easily integrated into both new installations and existing production systems. No external control technology or additional programming effort is required, significantly reducing commissioning time and costs. The systematic acquisition and evaluation of various process data also create a deep understanding of the process, which can be specifically used to optimise key performance indicators, process stability and product quality.
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Team spirit, action and shared experiences
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Employee in focus: Sebastian Meyer
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No two days are the same! New challenges and unexpected events ensure that there's never a dull moment - and that's exactly what Sebastian loves about his work.What motivates him?
Quite clearly: his team and the goal of constantly developing Walther Systemtechnik further. Working together on solutions and driving the company forward is his greatest driving force.His greatest strength?
Sebastian is a real problem solver! He has an impressive flair for finding the right information and learning from the past to make the best decisions for the future.And after work?
Then it's all about football, skiing and his family - the perfect balance to his varied working day.His advice to his younger self?
‘Do it exactly the same way! I'm happy with my life and have found my place in it.’Sebastian, we're glad to have you in the team!
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The valve is opened for a fixed time ⏱️, but the actual quantity discharged can fluctuate - e.g. due to changes in pressure or viscosity. Without measuring the actual discharge quantity, process reliability remains limited.Figure 2 (🇬🇧 6): PLC with volume flow meter for process evaluation (IO/NIO)
Measuring the discharged quantity is possible, but involves a high level of integration effort (additional hardware, software adaptations, calibration and fine adjustment). Figure 3 (🇬🇧 7): WVC control with volume flow meter for process evaluation (IO/NIO)
Low integration effort via plug-and-play: Automatic calibration and compensation of dead times facilitate commissioning. The volumetric flow is controlled directly via the WVC, without complex PLC adaptations.Figure 4 (🇬🇧 8): WVC as a control system
The highest level of process control: regulation instead of control! The WVC dynamically adjusts the valve opening time to ensure a constant discharge rate - regardless of external influencing factors such as pressure or viscosity fluctuations. Conclusion: If you want process reliability with minimum effort, there is no way around a solution with the WVC!
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Cured and ready for operation
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