Soaking Drum for Leather Processing

Product Specifications

Technical details and manufacturing context for Soaking Drum

Definition

The Soaking Drum is a critical component of the Beamhouse Module in leather manufacturing. It is a large, cylindrical, rotating vessel designed to soak raw hides in water and chemical solutions to rehydrate them after preservation, remove dirt and blood, and prepare them for subsequent liming and unhairing processes. Constructed primarily from stainless steel, the drum is built to withstand the corrosive environment of wet processing. The drum's dimensions and capacity are specified as reference ranges: drum diameter typically ranges from 1500 to 3000 mm, drum length from 2000 to 4000 mm, and working volume from 5 to 20 m³. The rotational speed is adjustable between 2 and 10 rpm to control soaking intensity. Motor power ranges from 5.5 to 22 kW, depending on drum size and load. The maximum load is typically 3000 to 8000 kg of wet hides per batch. The drum operates within a temperature range of 10 to 40 °C for the soaking water. The drum material is specified as SS304 stainless steel (ASTM A240), while the frame is made of Q235B carbon steel (GB/T 700). The total weight of the equipment, including motor and frame, ranges from 5000 to 12000 kg. The footprint (L×W×H) varies from 4000×2000×2500 mm to 6000×3000×3500 mm. The ingress protection rating is IP54 to IP55 (IEC 60529), and the electrical supply is three-phase 380–415 V AC at 50–60 Hz (IEC 60038). These values are reference ranges; actual specifications must be confirmed with the manufacturer for the specific model and application. The drum is designed for integration into a leather processing line, with interfaces for loading, unloading, and connection to water and chemical supply systems. Verification of performance and compliance with relevant standards should be conducted through procurement documentation and on-site testing.

Working Principle

Raw hides are loaded into the drum along with water and soaking agents. The drum rotates slowly, tumbling the hides to ensure uniform contact with the solution. This mechanical action, combined with the chemical agents, facilitates rehydration, cleaning, and the initial removal of soluble proteins and salts. The rotational speed is adjustable to control the intensity of the soaking process. The drum's design ensures that the hides are gently but effectively agitated, promoting even penetration of water and chemicals. The process is batch-based, with each batch typically handling 3000 to 8000 kg of wet hides. The temperature of the soaking solution is maintained within 10 to 40 °C to optimize the rehydration process. The drum's operation is monitored to ensure consistent results, and the equipment is designed for reliable performance in the demanding environment of a tannery.

Common Materials

Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Drum Diameter	1500–3000 mm	Determines batch capacity
Drum Length	2000–4000 mm	Affects hide loading
Working Volume	5–20 m³	Typical batch size
Rotational Speed	2–10 rpm	Adjustable for soaking intensity
Motor Power	5.5–22 kW	Depends on drum size and load
Temperature Range	10–40 °C	Water temperature for soaking
Maximum Load	3000–8000 kg	Wet hide weight per batch
Drum Material	SS304	Corrosion resistantASTM A240
Frame Material	Q235B	Carbon steel for structureGB/T 700
Weight	5000–12000 kg	Including motor and frame
Footprint (L×W×H)	4000×2000×2500–6000×3000×3500 mm	Space required for installation
Ingress Protection	IP54–IP55	Dust and water splash protectionIEC 60529
Voltage	380–415 V AC	Three-phase power supplyIEC 60038
Frequency	50–60 Hz	Compatible with mainsIEC 60038

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 that contains the hides and liquor.

Material: Stainless Steel
Drive Motor and Gearbox
Provides controlled rotational motion to the drum.

Material: Various Metals
Manhole/Door
Opening for loading and unloading hides.

Material: Stainless Steel
Liquor Inlet/Outlet Ports Part
For filling and draining the soaking solution.

Material: Stainless Steel

Applied To / Applications

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

Beamhouse Module

View system integration details

Manufacturers of Soaking Drum

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Frequently Asked Questions

What is the typical working volume of a soaking drum?

The working volume typically ranges from 5 to 20 cubic meters, depending on the drum size. This determines the batch capacity for soaking hides.

What materials are used for the drum and frame?

The drum is made of stainless steel SS304 (ASTM A240), and the frame is made of carbon steel Q235B (GB/T 700). These materials provide corrosion resistance and structural integrity.

What is the rotational speed range for the drum?

The rotational speed is adjustable from 2 to 10 rpm, allowing control over the soaking intensity. Slower speeds are gentler on the hides, while faster speeds increase agitation.

What electrical supply is required?

The drum requires a three-phase power supply of 380–415 V AC at 50–60 Hz, with an ingress protection rating of IP54 to IP55. Always verify the specific requirements with the manufacturer.

Data Basis

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Preliminary Technical Classification

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pressure:	Atmospheric (non-pressurized)
flow rate:	Batch process - no continuous flow
temperature:	Ambient to 40°C (104°F)
drum loading:	60-75% of total volume
rotation speed:	2-8 RPM
slurry concentration:	5-20% solids by weight

Soaking Drum

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards