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Vacuum belt filter

Maximum filtration, minimum downtime

Vacuum belt filters remove the smallest particles from process liquids. The systems show their strength where classic filter systems are no longer sufficient: In manufacturing processes with high purity requirements, fast cycle times and sensitive machines. KÖBO ECO>PROCESS supplies this technology as a sophisticated, fully automated solution – individually designed for your production.

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Unterdruckbandfilter Filtertechnik

Fine filtration with a system: the vacuum belt filter

Vacuum belt filters are used wherever maximum purity of the cooling lubricant is crucial for success – especially in grinding and machining processes in metalworking. They reliably remove even the finest particles from the medium, thereby ensuring consistently high process quality. The result: extended tool life, maximum machine availability and first-class workpiece surfaces.

Vacuum belt filter from KÖBO ECO>PROCESS

Filter/system pumps connected to the lower suction chamber generate a vacuum in the lower chamber and suck the cooling lubricant through the fine-pored filter fabric/fleece. The solids are reliably retained by the filter fabric and the cleaned filtrate is fed back into the production cycle. The filtered dirt cake is discharged discontinuously for chip disposal. Our filter is ideal for production processes with the highest cleanliness requirements – for example in grinding technology or machining. The vacuum belt filter works fully automatically and ensures that the clean filter fabric/fleece is automatically refilled as required. The supply of cooling lubricant from a regeneration tank to production is also ensured during the regeneration phase.

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Technical data

Feature Specification
Filter fineness
120 – 30 µm
Filter area
2-45 m²
Throughput capacity
500-20,000 l/min
Sizes
Standard sizes from 3 to 24 m². Special sizes beyond this on request. Small formats (0.7-1.4 m²) are only available in paper mode.
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Unterdruckbandfilter

Typical applications

Our vacuum belt filter is a high-performance solution for industrial processes with the highest demands on the purity of cooling lubricants and operational safety. The vacuum belt filter provides a measurable quality and efficiency advantage, particularly in abrasive machining processes, tight production tolerances and high tool wear.

  • Grinding processes in rolling bearing and gear manufacturing: The finest particles in the cooling lubricant are critical here, as they can lead to microscopic grinding marks and bearing defects.
  • Precision machining in the automotive and aerospace industries: Precision and process reliability are essential in these sectors, especially when machining safety-relevant components.
  • Precision machining of non-ferrous metals: Aluminum, brass or copper tend to form fine chips that must be reliably removed from the medium.
  • Machine tools with high lubricoolant circulation volumes: Large production lines with high media circulation benefit in particular from the constant filtration performance and low maintenance requirements.

Functionality

The contaminated process medium flows into a sealed filter chamber. Our system creates a vacuum under the clamped filter fabric/fleece by means of the suction effect of the filter system pumps. This suction effect draws the liquid through the filter material, which reliably retains even the finest particles. The filter effect is considerably enhanced by the dirt cake that forms. A pressure sensor in the lower chamber continuously monitors the filtration process. As soon as a defined negative pressure is reached, the vacuum is broken and the automatic belt feed is activated: The saturated filter belt is fed out of the system in sections and fresh filter fabric is drawn in. The separated filter cake is discharged dry and in segments – ready for disposal or recycling. Pressure monitoring is overlaid by time-controlled timing of the regeneration phases.

Advantages of our vacuum belt filters

Top performance in particle separation

Our vacuum belt filter achieves fine filtration down to 30 micrometres and thus removes even microscopically small particles from the cooling medium. This is crucial for production processes with particularly tight tolerances – such as grinding or precision machining.

Increased throughput thanks to negative pressure in the lower chamber

The suction effect of the connected pump(s) is used specifically to create a vacuum in the lower chamber and thus increase the flow rate of the coolant through the filter medium. This leads to accelerated filtration, especially with more viscous media or a higher volume of dirt – while maintaining the same filtration quality.

Two functions, one system

Our vacuum belt filter also functions as a cooling lubricant reservoir and filtration unit. This reduces the number of external components and saves valuable space in the production environment. As the filter pumps that draw in the cooling lubricant also take over the function of the system pumps that supply the production, the costs for pump technology and pipeline construction are also reduced.

Fully automatic continuous operation

The entire filtration process is sensor-controlled and requires no manual intervention. The system monitors the degree of contamination, controls the belt feed, regulates the fleece consumption and ensures consistently high media quality – in 24/7 operation.

Automated belt cleaning

An integrated cleaning mechanism with brush or knocker shaft and targeted belt rinsing removes residues from the filter belt. This cleaning unit works in parallel with the filtration process, prevents efficiency losses and significantly extends the service life of the filter belt used.

Robust industrial design

Every component of our system is designed for durability and heavy-duty use: from the belt drive and seals to the control technology. This ensures maximum operating times, low maintenance intervals and a long-lasting investment value.

How do you benefit in the company?

  • Tools last longer: Fewer particles in the coolant mean less wear on cutting and grinding tools.
  • Less machine downtime: Contaminated coolant leads to problems in nozzles, sensors or pumps. Our filters prevent this.
  • Lower consumption of operating materials: Cooling lubricants need to be replaced less frequently. This saves costs and reduces disposal costs.
  • Cleaner production results: A high level of media purity leads to better workpiece surfaces and a lower reject rate.

Your advantages with KÖBO ECO>PROCESS

  • Individual solutions: We develop systems that are precisely tailored to your requirements and processes. No standard products, but tailor-made technology.
  • Comprehensive service: planning, construction, installation and commissioning - all from a single source, including support from experienced project managers.
  • Experience and know-how: Decades of practical experience and in-depth technical understanding lead to durable, economical solutions.
  • Fast support: In the event of a fault, we are available, responsive and efficient. Our goal: to ensure your productivity - without long downtimes.

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Contact us

Would you like a non-binding consultation, further information or an initial quote? Then get in touch with us now.
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Find out more about our services and references by calling

Phone +49 (0) 202 / 7 09 02 – 0

In urgent cases, you can also reach us via our KÖBO ECO>PROCESS service hotline: Tel. +49 (0) 202 / 7 09 02 – 199

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