Processing Drum for Industrial Vacuum Tumblers

Product Specifications

Technical details and manufacturing context for Processing Drum

Definition

The Processing Drum is the core rotating component of an Industrial Vacuum Tumbler, designed as a sealed cylindrical chamber that holds materials during processing. It rotates to tumble and mix contents while maintaining a controlled vacuum environment, facilitating processes such as marination, curing, drying, or coating of food products, pharmaceuticals, or other materials. Constructed from stainless steel grades AISI 304 or 316L, the drum is engineered for hygiene and corrosion resistance, with 316L offering enhanced protection against acidic products. The drum's volume ranges from 100 to 5000 liters, accommodating various batch sizes and production throughputs. Its diameter spans 800 to 2000 mm, and length from 1500 to 4000 mm, influencing footprint and clearance requirements. The maximum rotation speed is 2 to 20 rpm, with higher speeds reducing cycle time but potentially damaging the product. The vacuum level operates between 0.08 and 0.1 MPa, where lower pressure improves impregnation but demands stronger seals. Operating temperature ranges from -10 to 60°C, beyond which seals and lubricants may degrade. The drum is driven by an electric motor with power ratings from 2.2 to 15 kW, selected based on drum size and load inertia. Electrical supply requires three-phase power at 380–480 V AC, per IEC 60038, and ingress protection is rated IP54 to IP65 for washdown environments. Maximum load capacity is 50 to 2000 kg, and the drum's weight ranges from 500 to 3000 kg, affecting floor loading and installation. Material grade conforms to ASTM A240. All values are reference ranges; verify model-specific specifications with the manufacturer or supplier.

Working Principle

The drum rotates on its axis, typically driven by an electric motor through a gear system. As it rotates, materials inside are lifted and dropped (tumbled) to ensure uniform exposure and mixing. The drum is sealed to maintain vacuum pressure, which lowers the boiling point of liquids, accelerates moisture removal, and enhances penetration of marinades or coatings into the material. The vacuum level is controlled within 0.08–0.1 MPa, and rotation speed is adjustable from 2 to 20 rpm. The tumbling action combined with vacuum facilitates efficient mass transfer and uniform processing. The drum's design ensures that the vacuum is maintained throughout the cycle, and the seals are critical to prevent leakage. The motor power and gear ratio are selected to handle the load inertia and provide the required torque. The operating temperature range of -10 to 60°C must be respected to avoid seal and lubricant degradation. The process is batch-oriented, with cycle times depending on product type and desired outcome.

Common Materials

Stainless Steel (AISI 304/316)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Drum Volume	100–5000 L	Select based on batch size and production throughput.
Max Rotation Speed	2–20 rpm	Higher speeds reduce cycle time but may damage product.
Vacuum Level	0.08–0.1 MPa	Lower pressure improves impregnation but requires stronger seals.
Operating Temperature	-10–60 °C	Exceeding range may degrade seals and lubricants.
Drum Diameter	800–2000 mm	Affects footprint and clearance requirements.
Drum Length	1500–4000 mm	Longer drums increase capacity but require more floor space.
Material Grade	304/316L	316L offers better corrosion resistance for acidic products.ASTM A240
Motor Power	2.2–15 kW	Select based on drum size and load inertia.
Electrical Supply	380–480 V AC	Three-phase required; check local grid compatibility.IEC 60038
Ingress Protection	IP54–IP65	Higher IP for washdown environments.IEC 60529
Max Load Capacity	50–2000 kg	Do not exceed to avoid motor overload and uneven processing.
Weight	500–3000 kg	Consider floor loading and installation requirements.

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

Drum Shell Part
Forms the main cylindrical body of the drum, containing the materials during processing

Material: Stainless Steel
End Plates Part
Seal the ends of the drum shell and provide mounting points for the rotation shaft

Material: Stainless Steel
Rotation Shaft Part
Transmits rotational force from the drive system to the drum

Material: Carbon Steel or Stainless Steel
Sealing System
Maintains vacuum integrity at the shaft penetration points

Material: Food-grade elastomers (e.g., silicone, EPDM), Stainless Steel
Internal Baffles/Fins Part
Lift and tumble materials more effectively during rotation

Material: Stainless Steel

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Frequently Asked Questions

What materials are used for the Processing Drum?

The drum is typically made of stainless steel grades AISI 304 or 316L, with 316L offering better corrosion resistance for acidic products. The material grade should conform to ASTM A240. Always confirm the exact grade with the manufacturer for your specific application.

How do I select the right drum volume?

Drum volume ranges from 100 to 5000 liters. Selection depends on batch size and production throughput. Consider the required capacity per cycle and the available floor space, as larger drums increase footprint and clearance requirements.

What is the maximum rotation speed and why does it matter?

The maximum rotation speed is 2 to 20 rpm. Higher speeds reduce cycle time but may damage the product due to excessive impact. Choose a speed that balances efficiency and product integrity, and verify the optimal speed for your material.

What are the electrical and protection requirements?

The drum requires a three-phase electrical supply of 380–480 V AC, per IEC 60038. Ingress protection is rated IP54 to IP65, with higher ratings recommended for washdown environments. Ensure your facility's electrical system is compatible and that the drum's IP rating suits your cleaning procedures.

Data Basis

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Preliminary Technical Classification

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pressure:	Full vacuum to 2 bar absolute (typical), up to 5 bar with reinforced design
flow rate:	Batch process - not applicable
temperature:	-20°C to 150°C (typical), up to 200°C with special seals
slurry concentration:	Up to 70% solids by weight (depending on viscosity and particle size)

Processing Drum

Product Specifications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

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