What is a tubular centrifuge?
A tubular centrifuge is a high-speed, continuous solid-liquid separation device.
Its structural feature is a long, tubular drum that can rotate at speeds of 16,000–20,000 rpm, generating centrifugal forces of 12,000–15,000 g.
Under this intense centrifugal force, solid particles and liquids are rapidly separated, achieving solid-liquid or liquid-liquid separation.
Because there is no filter inside the drum, clogging is not a problem, making it particularly suitable for clarification of low-concentration, fine-particle, and difficult-to-separate materials.
Tubular centrifuges are commonly classified into two types:
Clarifying Type: Primarily used to remove small amounts of solid impurities from liquids;
Separating Type: Used for liquid-liquid separation and removal of trace solids, such as in plasma extraction and oil-water separation.
Advantages of Tubular Centrifuges in Bio-fermentation Broth Treatment
1. High-Speed Separation and Significant Clarification
During bio-fermentation, the liquid typically contains 0.5%–3% bacterial cells or cell residue, with particle sizes ranging from 1 to 5 micrometers.
Ordinary sedimentation equipment struggles to separate these particles, while tubular centrifuges, through powerful centrifugal force, rapidly separate these fine suspended solids, resulting in a clear and transparent liquid with a clarity of over 99.9%.
2. No Filter Media Required, Avoiding Secondary Contamination
Unlike filtration methods, tubular centrifuges do not require filter cloths or cartridges, eliminating the problems of clogging or consumable replacement.
The entire machine features a fully enclosed structure, allowing for aseptic operation, making it particularly suitable for pharmaceutical and food fermentation applications.
3. Continuous Feeding and Stable Operation
The equipment enables continuous feeding, separation, and effluent discharge, ensuring stable and reliable operation suitable for 24-hour uninterrupted production.
This characteristic is especially important for large-scale bio-fermentation plants, significantly improving the overall efficiency of the production line.
4. Small footprint and low energy consumption
Compared to horizontal screw centrifuges or plate and frame filter presses, tubular centrifuges are compact, simple in structure, and consume only 30%-50% of the energy of traditional separation equipment.
5. High adaptability
Whether it’s bacterial fermentation broth, yeast fermentation broth, fungal broth, enzyme preparations, or plant extracts and algae culture media, tubular centrifuges can achieve efficient separation.
Typical Application Scenarios Analysis
1. Fermented Beverages and Health Products
In the production of functional beverages or probiotic drinks, tubular centrifuges can remove bacteria and control turbidity, resulting in a clearer and more stable product appearance.
2. Biopharmaceuticals and Blood Products
In the processing of vaccines, plasma, and cell culture media, tubular centrifuges, with their aseptic sealing and low shear force characteristics, can achieve high-purity separation without damaging cell or protein structures.
3. Plant Extracts and Traditional Chinese Medicine Separation
For high-value-added products such as traditional Chinese medicine extracts, plant essences, and tea polyphenols, tubular centrifuges can effectively remove fine suspended solids, improving the transparency and stability of the extract.
Structure and Working Principle Analysis
The tubular centrifuge consists of a rotating drum, main shaft, motor, base, feeding system, and discharging system.
The fermentation broth continuously enters the high-speed rotating drum through the inlet.
Under the powerful centrifugal force, denser solid particles are thrown against the inner wall of the drum and deposited, while the clarified liquid is continuously discharged from the top.
The entire separation process is completed automatically and continuously, requiring no manual intervention.
When the solids accumulate to a certain thickness, simply stop the machine to remove the residue, and it can continue operating.
In the fields of bio-fermentation and liquid separation, tubular centrifuges are not merely pieces of equipment, but a symbol of efficiency and purity.
Using the power of high-speed rotation, they clarify complex mixtures by separating them into distinct layers, providing businesses with more efficient, safe, and energy-saving separation solutions. Choosing a high-quality, Chinese-made tubular centrifuge means choosing higher separation efficiency, lower operating costs, and more stable product quality.
