Rotary lobe pump BioCut

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Overview
The BioCut is a compact pump system developed for biogas and other demanding industrial applications. It integrates a VX‑series rotary lobe pump with a RotaCut wet cutter to separate heavy material, macerate fibrous and disruptive solids and produce a homogeneous, pumpable suspension. Vogelsang designed the layout for a minimal footprint and straightforward on‑site maintenance.

Key benefits

• Cost-effective pumping of viscous, solids- and fibre-laden media
• Separation of heavy material before the pump to protect downstream equipment
• Upstream cutting/maceration for homogenisation and improved pumpability
• Compact design with short suction paths
• QuickService accessibility for fast on-site maintenance

How it works
The upstream RotaCut separates heavy items (stones, metal parts) and reduces fibrous and disruptive matter. The treated medium reaches the VX rotary lobe pump as a more homogeneous suspension with reduced floating layers and viscosity, which improves pumping behaviour and can reduce energy consumption and positively affect gas yield.

Models

• BioCut VX136-105Q/RCQ-26G — compact unit for small volume flows; RotaCut separates heavy material and macerates fibers.
• BioCut VX136-105Q/RCQ-33Gpro — small, high-capability unit with RCQpro for demanding heterogeneous media.
• BioCut VX136-140Q/RCQ-33Gpro — universal standard version for conventional applications.
• BioCut VX186-130Q/RCQ-43Gpro — large unit for high-volume flows and viscous suspensions.

Features and highlights

• Integrated heavy-material separator to protect cutter and pump components
• QuickService design: wear parts accessible and replaceable on site
• Adjustable pump housing segments to compensate wear without additional parts
• Break-proof shafts to reduce deflection and start-up wear
• Element-based pump body design for economical component replacement
• Optimized cutting-screen geometries, reversible and wear-resistant; free passage sizes 4–50 mm
• Quality Cartridge: preassembled mechanical seal cartridge for fast, safe seal replacement
• Compact assembly: pump and cutter mounted together with short suction pipes
• Self-priming capability: primes from depths down to approximately 9 m

Options

• Connector box — for upstream heavy-material separation with XRipper/XRP units
• InjectionSystem — increases foreign-matter resistance, volumetric efficiency and suction capacity
• Radial wear plates — high-wear-resistant steel plates to extend maintenance intervals
• HiFlo® rotary lobes — pulsation-free pumping and improved suction performance
• Cutting screens — multiple hole patterns and free passage options; stainless-steel variants available
• ACCplus — online monitoring of cutter blade status
• Auto-Reverse function — blockage detection and periodic reversing to maintain cutting performance

Application areas
The BioCut is intended for biogas/anaerobic digestion plants and other installations that handle slurries and suspensions with high solid and fibre content and foreign objects. It separates heavy material, macerates disruptive solids, homogenises the medium and improves downstream pumping and plant efficiency.

Technical specifications

• Composition: VX-series rotary lobe pump + RotaCut wet cutter
• Heavy-material separation integrated; cutting-screen free passage options 4–50 mm (stainless steel available)
• QuickService accessibility; replaceable wear parts on site
• Self-priming capability (primes from approx. 9 m)
• Element-based pump body design; available options include InjectionSystem, HiFlo lobes, radial wear plates, ACCplus, Auto-Reverse, connector box