Editorial Technical Reference

Agitation System

This page explains how Agitation System is classified within Food Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical subsystem within an automated fermentation control system designed to mix and homogenize fermentation media through controlled agitation.

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Product Specifications

Technical details and manufacturing context for Agitation System

Definition
The Agitation System is a critical component of the Automated Fermentation Control System responsible for maintaining uniform temperature, nutrient distribution, and gas dispersion within the fermentation vessel. It ensures optimal contact between microorganisms and substrates, prevents sedimentation, and enhances mass transfer rates, directly influencing fermentation efficiency, product yield, and consistency in industrial bioprocesses. The system typically consists of an electric motor, a drive shaft, and one or more impellers mounted inside the fermentation vessel. The motor rotates the shaft and impellers at controlled speeds, creating fluid movement and turbulence. This mechanical agitation mixes the contents, breaks up gas bubbles for better oxygen transfer (in aerobic fermentations), and maintains homogeneity throughout the fermentation cycle. Speed and torque are precisely regulated by the overarching control system based on process parameters. The system is designed for food-grade applications, with wetted parts made of stainless steel (AISI 316L) and food-grade elastomers. Key parameters include rated power (1.5–7.5 kW), agitation speed (50–300 rpm), impeller diameter (300–1200 mm), shaft length (1000–4000 mm), and operating temperature (-10 to 150 °C). The system operates under pressures up to 0.6 MPa and is available with ingress protection ratings from IP54 to IP65. Supply voltage is 380–480 V AC, three-phase, 50/60 Hz. Noise level is ≤75 dB(A) at 1 m distance. Weight ranges from 50 to 500 kg depending on configuration. Surface roughness of wetted parts is ≤0.8 μm Ra per ISO 4287. These values are reference ranges; verify model-specific specifications with the manufacturer.
Working Principle
The system uses an electric motor to rotate a shaft with impellers inside the fermentation vessel. The impellers create fluid flow and turbulence, mixing the media, breaking up gas bubbles for oxygen transfer, and maintaining homogeneity. Speed and torque are controlled by the automation system based on process parameters.
Common Materials
Stainless Steel (AISI 316L), Food-Grade Elastomers
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Power1.5–7.5 kWSelect based on media viscosity and tank volume.
Agitation Speed50–300 rpmAdjustable via VFD for process optimization.
Impeller Diameter300–1200 mmMatch to tank diameter for efficient mixing.
Shaft Length1000–4000 mmCustomizable to tank depth.
Material of Wetted PartsSS316LFood-grade, corrosion-resistant.ASTM A240
Surface Roughness≤0.8 μm RaRequired for hygienic applications.ISO 4287
Operating Temperature-10–150 °CHigher temperatures may require special seals.
Operating Pressure0.1–0.6 MPaFor closed fermentation vessels.
Ingress ProtectionIP54–IP65IP65 for washdown environments.IEC 60529
Supply Voltage380–480 V ACThree-phase, 50/60 Hz.IEC 60038
Noise Level≤75 dB(A)At 1 m distance, under load.ISO 3746
Weight50–500 kgDepends on configuration and materials.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Drive Motor
    Provides rotational power to the agitation shaft, often with variable speed control.
    Material: Stainless Steel Housing, Copper Windings
  • Agitation Shaft Part
    Transmits torque from the motor to the impeller(s) inside the vessel.
    Material: Stainless Steel (AISI 316L)
  • Impeller
    Creates fluid flow and mixing action within the fermentation broth. Types include Rushton turbine, pitched blade, or marine propeller.
    Material: Stainless Steel (AISI 316L)
  • Mechanical Seal
    Prevents contamination and maintains sterility by sealing the rotating shaft where it enters the vessel.
    Material: Ceramic/Silicon Carbide, Food-Grade Elastomers
  • Bearing Assembly
    Supports the agitation shaft, ensuring stable rotation and alignment.
    Material: Stainless Steel, PTFE

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 2 bar (gauge)
flow rate: 0.1 to 10 m³/h
temperature: 5°C to 80°C
slurry concentration: Up to 40% solids by weight
Media Compatibility
✓ Aqueous fermentation broths ✓ Yeast-based media ✓ Bacterial cell cultures
Unsuitable: Highly abrasive slurries with silica content >20%
Sizing Data Required
  • Tank volume (m³)
  • Required mixing intensity (Reynolds number or power/volume)
  • Media viscosity (cP)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Excessive radial loads from unbalanced impellers or misalignment, combined with inadequate lubrication, leading to spalling and premature wear.
Shaft seal leakage
Cause: Wear or damage to mechanical seals due to abrasive particles in the fluid, thermal cycling, or improper installation causing seal face misalignment.
Maintenance Indicators
  • Unusual vibration or audible knocking from the drive assembly, indicating imbalance, bearing wear, or looseness.
  • Visible fluid leakage around the shaft seal or excessive temperature rise at the bearing housing, signaling seal failure or lubrication issues.
Engineering Tips
  • Implement regular vibration analysis and laser alignment checks to detect imbalance or misalignment early, ensuring smooth operation and reduced mechanical stress.
  • Use compatible, clean lubricants and establish a strict lubrication schedule; consider upgrading to double mechanical seals or seal flush systems for abrasive or corrosive fluids.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 2858:2022 - End-suction centrifugal pumps (Designation, nominal duty point and dimensions) ANSI/ASME B73.1-2021 - Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process DIN 24256:2018 - Agitators; definitions, main dimensions, nominal powers

Quoted from the published standard.

Manufacturing Precision
  • Shaft runout: ≤0.05 mm
  • Impeller clearance: ±0.5 mm
Quality Inspection
  • Vibration analysis (ISO 10816-7)
  • Material verification (PMI - Positive Material Identification)

Manufacturers of Agitation System

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Junan Tongda Electronic Equipment Factory
Shandong, CN
Founded 20127134 square meters
CE
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
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Frequently Asked Questions

What materials are used for wetted parts?

Wetted parts are made of stainless steel (AISI 316L) and food-grade elastomers, as listed in the directory. Confirm exact materials for your model.

What is the typical power range?

The rated power range is 1.5 to 7.5 kW, but the exact value depends on media viscosity and tank volume. Verify with the manufacturer.

Can the agitation speed be adjusted?

Yes, the speed is adjustable via a variable frequency drive (VFD) for process optimization, within the range of 50 to 300 rpm.

What standards are referenced?

Standards include ASTM A240 for material, ISO 4287 for surface roughness, IEC 60529 for ingress protection, IEC 60038 for voltage, and ISO 3746 for noise. These are verification references, not certifications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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