Diaphragm dosing technology
Membrane dosing technology
MEMBRANE DOSING TECHNOLOGY
Highly accurate and shear-free dosing and mixing of liquids and abrasive media
Advantages of our technology
Why diaphragm dosing technology from PROMERA?
Die Membrandosiertechnik von Promera steht für höchste Präzision und Zuverlässigkeit. Unsere Dosiersysteme sind optimal auf die Herausforderungen moderner Industrieprozesse abgestimmt. Mit einem Druckbereich von bis zu 200 bar und einer Dosiergenauigkeit von <0,1 % gewährleisten wir maximale Effizienz und Prozesssicherheit.
Precise dosing
Maximum precision thanks to patented double diaphragm technology.
Shear-free mixing
Ideal for viscous, abrasive and sensitive materials.
Longevity
Robust design for minimal maintenance costs.
Process reliability
Reliable operation with a system availability of over 98 %.
Functional principle of diaphragm dosing technology
At the heart of our diaphragm dosing technology are the patented double diaphragm technology and the hydraulic dosing axis. This high-precision system guarantees safe and loss-free operation that is perfectly adapted to the requirements of modern production processes:
Loss-free fluid control
The high-precision hydraulic flow is converted into an exactly equal fluid flow without losses, which enables exceptional precision.
Patented double diaphragm
Our technology ensures process-safe separation between the neutral liquid and the processing fluid. This guarantees the purity of the materials and trouble-free operation.
Consistent dosing quality
Thanks to the innovative design, the dosing accuracy remains permanently stable - a basic requirement for the optimum implementation of chemical mixing processes.
Our product range
Hydraulic dosing axis
The hydraulic metering plunger meters hydraulic oil with high precision and feeds it into a diaphragm chamber. A servomotor, coupled with a reduction gearbox and a ball screw spindle, moves the metering plunger, which feeds the hydraulic oil into the chamber without loss.
High accuracy is achieved by a precise drive with 8000 steps per millimeter and pressure compensation between the cylinder chambers. This pressure compensation minimizes the drive forces and protects the seals, ensuring smooth, jerk-free movement.
The double diaphragm technology enables a loss-free conversion of the hydraulic flow into an identical fluid flow and reliably separates the liquids. This achieves a consistently precise dosing quality that creates optimum conditions for chemical mixing processes.
Mode of operation
- 1-, 2- or multi-component dosing
- Discontinuous or continuous operation
- Automatic or manual operation
- Conventional or electrostatic application
- High, medium or low pressure applications
- Pressure-controlled or volume-controlled
Properties
- Dosing quality independent of the properties of the processing media, e.g. viscosity, temperature fluctuations, solids content, abrasiveness, etc.
- Guaranteed dosing and mixing quality provides optimum conditions for the chemical reaction process
- Significant savings in the areas of material costs as well as spare parts and maintenance costs
- Wear-free construction and operation
- Pulsation-free operation
Low-pressure, medium-pressure and high-pressure diaphragm dispensers
Technical highlights:
- Dosing ratios from 1:100 to 100:1 in 0.01 increments
- Viscosity range up to 30 million mPas
- Material temperature up to 130 °C
- Flow rate from 20 to 1600 cm³/min
Liquid delivery data:
| Liquid delivery data | Low pressure | Medium pressure | High pressure |
|---|---|---|---|
| Print area | 0 to 10 bar | 0 to 100 bar | 0 to 200 bar |
| Material outlet/ working pressure | 0 to 10 bar | 0 to 100 bar | 0 to 200 bar |
| Dosing accuracy | <0,1% | <0,1% | <0,1% |
| Dosing ratio | 1:100 to 100:1 | 1:100 to 100:1 | 1:100 to 100:1 |
| Material discharge | 20 to 1600 cm³ | 20 to 1600 cm³ | 20 to 1600 cm³ |
| Viscosity of the media | 0 to 7 million mPas | 0 to 7 million mPas | 0 to 7 million mPas |
| Filler sizes | up to 0.5 mm | up to 0.5 mm | up to 0.5 mm |
| Max. Material temperature | 130 °C | 130 °C | 130 °C |
Low-pressure diaphragm feeder
Suitable for applications with sensitive materials such as UV-curing paints or deionized water.
Pressure range: 0 to 10 bar
Medium-pressure diaphragm feeder
Ideal for various industrial applications, from solvent-based to solvent-free adhesives.
Pressure range: 0 to 100 bar
High-pressure diaphragm feeder
Perfect for highly viscous media and abrasive raw materials, e.g. quartz sand-filled polyurethanes.
Pressure range: 0 to 200 bar
Compact diaphragm dosing system
The plug and play solution for your production
Our compact diaphragm dosing system offers you a fully integrated and stand-alone solution in a compact cabinet. It combines all the necessary components in one unit and is the ideal choice for companies that prefer a quick and uncomplicated installation.
The low-pressure diaphragm dosing system is particularly suitable for dosing and mixing 2 or 3 components in a dynamic dosing ratio that can be flexibly adjusted via the software. The system is perfect for coating and painting applications, especially when processing filled, abrasive or chemically aggressive liquids.
Technical highlights:
- Fully integrated system with closed design
- Volumetrische Dosierung, Abweichung <0,1%
- Continuous dosing or batch operation
- Working pressure up to 6 bar without hydraulic support, up to 250 bar with hydraulic support
- Discharge up to approx. 2500 ccm/min per diaphragm metering unit (depending on working pressure, material supply and viscosity)
- Siemens SIMATIC control components, connection to higher-level systems and process control systems possible
Modular system:
- Diaphragm feeder made of POM, aluminum or stainless steel, depending on working pressure, material and process temperature
- Expandable to any number of components
- Spare and wear parts for the dosing technology are largely identical for all systems
Applications of diaphragm dosing technology
Promera's diaphragm dosing technology is versatile and offers solutions for numerous industries and demanding materials. Our systems help companies to maximize efficiency, precision and sustainability. With the combination of industry diversity and material flexibility, Promera's diaphragm dosing technology is the ideal solution for demanding industrial processes.
Application sectors
Automotive industry and automotive suppliers
Precise processing of coatings, adhesives and paints for the highest quality standards.
Plastics industry
Effective dosing and processing of reactive materials in production.
Chemistry
Reliable dosing of solvent and aqueous systems for a wide range of applications
Pharmacy
High precision in the processing of pharmaceutical raw materials.
Wind power and renewable energies
Efficient and sustainable solutions for demanding production processes.
Ceramic coatings in the sanitary sector
Perfect mixes for ceramic-based feasting.
Contract coating
Flexible support for processing different materials.
Application raw materials
- Solvent and aqueous systems
- UV-curing varnishes and liquid isocyanates
- Solvent-based and solvent-free adhesives
- Polyurethanes with quartz sand
- Ceramic-based feasting
- Demineralized water (fully demineralized water)
FAQ - Frequently asked questions
What is diaphragm dosing technology?
A high-precision dosing technology that processes liquids precisely and without shear stress thanks to the double diaphragm system.
Which media can be processed?
From aqueous systems to highly viscous and abrasive materials such as polyurethanes or ceramic slurries.
How individual are the systems?
Each system is tailored precisely to your requirements - for maximum efficiency and quality.
Why PROMERA?
PROMERA offers you:
Decades of experience in diaphragm dosing technology.
Innovative technologies that optimize your production processes.
Support from planning to commissioning.
Accessories and individual solutions
Our range includes high-quality mixing heads for low-, medium- and high-pressure applications. Each system is adapted to your specific requirements - contact us and we will develop a customized solution for your production.