Automatic feeding system CC-Mix

electricfor abrasive fluidsfor viscous fluids

Overview

• Mashes simple biomass cost‑effectively to form a homogeneous organic suspension
• Integrated foreign‑matter separator removes heavy objects before they reach the pump
• Compact design and simple control for easy integration and retrofit
• One CC‑Mix can feed multiple digesters
• Quick on‑site replacement of wear parts via QuickService concept

Application summary
The CC‑Mix is an energy‑efficient liquid feeding system for preparing flowable to slightly pasty solid substrates (e.g. maize silage, sugar beet pulp, grain meal, fruit and vegetable waste, dry chicken manure) into a pumpable, homogeneous suspension suited for digester feed. It is designed to minimize power consumption while delivering optimal substrate preparation for fermentation.

Design and operating principle
The CC‑Mix combines a CC‑series progressive cavity pump with a generously sized mixing chamber. Solids are conveyed into the mixing chamber by a feed screw (side or top feed). Liquid (for example recirculated digestate) is introduced at the chamber inlet. The mixing shaft actively pulls and disperses solids into the liquid to avoid floating layers and to produce a homogeneous suspension suitable for pumping.

Performance
Engineered geometry and component selection keep energy demand low while achieving intensive mixing. Typical total drive power for producing a well‑mashed organic suspension is approx. 11–15 kW, depending on configuration and feed material. Configurations are available for higher pressures (two‑stage pump) when required.

Maintenance and service
The CC‑Mix follows the QuickService concept: rotor and stator swivel out as a unit for fast removal and replacement. The mixing shaft and wear parts are accessible and replaceable on site with simple manual operations, minimizing downtime.

Key features

• Efficient intensive mixing with low energy requirement
• Integrated gravity‑based foreign‑matter separator at the mixing‑chamber base
• Compact footprint for easy integration and retrofit
• QuickService: simple on‑site replacement of rotor/stator unit, shaft seal and mixing‑shaft components
• Robust direct‑mounted parallel‑shaft geared motor drive (no additional coupling)
• Mixing chamber, mixing shaft and exposed steel parts in corrosion‑resistant materials
• Protected cardan shaft with two universal joints and protective sleeve to avoid damage from solids and fibres

Options

• Two‑stage / multi‑stage pump geometry for higher pressure or abrasive media
• Performance Control Unit (PCU) with optional PROFINet interface
• Wide‑screen touch display in control cabinet door for local operation
• Complete control hardware/software and sensor package available
• Remote maintenance capability for PCU (software updates and remote support if enabled)

Typical application areas
Feed preparation and dosing for biogas plant digesters: processing of renewable substrates and energy‑rich co‑substrates such as maize silage, grain residues, sugar beet pulp, fruit and vegetable waste, and dry poultry manure. Suitable for new plants and retrofit installations; one unit can supply multiple digesters.

Technical specifications

• Commercial designation: CC‑Mix
• Standard model: CC‑Mix66‑M1 — capacity up to 50 m³/h, pressure up to 6 bar
• Power model: CC‑Mix66‑D1 — capacity up to 85 m³/h, pressure up to 6 bar
• High‑pressure model: CC‑Mix66‑M2 (two‑stage) — capacity up to 50 m³/h, pressure up to 12 bar
• Typical power consumption: approx. 11–15 kW (depending on feedstock & configuration)
• Pump type: Progressive cavity pump (CC series, Cavity‑Comfort)
• Mixing chamber and mixing shaft: corrosion‑resistant stainless steel
• Integrated foreign‑matter separator: gravity‑based, standard
• Drive: direct‑mounted parallel‑shaft geared motor
• Service concept: QuickService (rotor/stator swivel unit; easy replacement of mixing‑shaft tools)
• Available automation: PCU, PROFINet, touch display, full control package, remote maintenance