A cylindrical drum mixer is used to blend materials, increase contact between different phases to promote chemical reactions, and accelerate physical processes such as dissolution. Depending on the application, these mixers are available in large, medium, and small sizes.
Applications of a cylindrical drum mixer
Blending different materials
A drum mixer combines multiple materials to produce a uniform mixture. For example, cement, sand, crushed stone, and water can be mixed to produce fresh concrete.
Promoting chemical reactions
Mixing increases the contact area between materials, which can promote chemical reactions. In gas-liquid catalytic reactions, for example, a solid powdered catalyst or a liquid catalyst with a density different from that of the reaction liquid may need to remain uniformly suspended in the liquid. Gas must also be dispersed as small bubbles throughout the liquid to support contact between the phases.
Accelerating physical processes
A drum mixer can accelerate physical processes such as dissolution. When granular solutes are added to a solvent, mechanical mixing promotes contact between the solid particles and the liquid, helping the solute dissolve and distribute throughout the mixture.
Structural features of a cylindrical drum mixer
Support roller bases
The mixer uses an integrated base for the support rollers and a separate base for the drive components.
The base supporting each pair of rollers is constructed as a single unit. This arrangement simplifies installation and adjustment and helps maintain installation accuracy.
The drive components have a separate base. This design is relatively simple to manufacture, lightweight, and convenient to install and adjust.
Reducer housing and gears
The reducer housing and gears use welded construction. To simplify installation, the upper cover of the reducer on the secondary mixer is divided into two sections.
This arrangement provides a neat external appearance and reduces component weight. Welded gears can also make efficient use of materials. However, achieving consistent quality requires careful control of the welding process and a high level of welding skill.
Automatic oil-spray lubrication
The mixer incorporates automatic oil-spray lubrication for the gear contact surfaces. The lubrication arrangement covers the contact between the riding ring and support rollers, the riding ring and thrust rollers, and the small gear and large gear.
These interfaces are part of the supporting and drive mechanisms, so their contact conditions and lubrication requirements need to be considered during equipment installation and maintenance.
Custom machining for industrial equipment
In addition to components used in mixing equipment, Hansheng Automation provides custom precision machining for non-standard industrial parts according to customer supplied drawings. Our machining services also cover components for food processing and filling machinery, precision parts for yacht equipment and remote control racing cars, and parts used in tobacco packaging machinery. Each component is manufactured according to the supplied drawings and the specified dimensional and structural requirements.
