What are the main wearing parts of industrial double planetary disperser

Industrial dual planetary dispersers are core equipment for processing ultra-high viscosity, high-solids materials. They are widely used in new energy battery slurries, electronic adhesives, sealants, inks, polymer materials, and other fields. The efficient operation of this equipment depends on the coordinated operation of its precision components.

I. Dynamic and Static Sealing Systems

Keywords: Mechanical Seal, Packing Seal, Static Seal, Vacuum Retention

The sealing system is one of the most critical and vulnerable components of a dual planetary disperser, especially when processing solvent-based materials or materials requiring high vacuum.

1. Dynamic Shaft Seal

The dynamic seal is located where the agitator shaft exits the mixing cylinder or passes through the planetary housing, enduring high-speed rotation and high pressure differentials.

Mechanical Seal Assembly: This is the most common wear component. It includes a dynamic seal, static seal, O-ring, and spring. Due to the abrasive nature of materials (such as particles in battery cathode and anode slurries) and chemically corrosive materials (such as solvents or acidic or alkaline materials), sealing surfaces can gradually wear or corrode, leading to a loss of vacuum, material leakage, or lubricant contamination. For extremely high-viscosity or highly abrasive materials, regular inspection of sealing surface flatness and O-ring elasticity is necessary.

Packing Rings: In some traditional or simple designs, packing rings made of polytetrafluoroethylene (PTFE) or other materials are used. Compression deformation and frictional wear of packing rings can lead to a sharp decline in sealing performance, requiring regular tightening or replacement.

2. Static Seals and Gaskets

Vacuum Flange Seals: These primarily refer to large-diameter O-rings or gaskets used in locations such as the flange connecting the cylinder head and cylinder body, and in locations like the inspection port or feed port. Frequent opening and cleaning of the cylinder head, as well as temperature fluctuations, can cause these rubber or fluororubber seals to age, harden, or permanently deform, compromising the equipment's airtightness and vacuum retention capabilities.

II. Transmission and Power System

Keywords: Planetary Gears, Bearings, Lubrication System, Torque Transmission

Dual planetary dispersers must overcome the enormous shear resistance caused by ultra-high viscosity, placing extremely high loads on the transmission system.

1. Planetary Gearbox Bearings

Main and planetary gear bearings: These bearings withstand complex radial and axial forces and operate under high torque and low speed conditions. Poor lubrication, prolonged high-load operation, or accidental material intrusion can cause fatigue wear on the bearing rolling elements and raceways. Exacerbated wear can cause abnormal noise and vibration, and reduce transmission efficiency. Bearings are key components for ensuring the life of the equipment.

Gearbox Oil Seals: Gearbox oil seals prevent lubricant leakage and are crucial for maintaining a clean and lubricated gearbox.

2. Drive Belts or Couplings

In belt drive designs, V-belts or timing belts can stretch, wear, or break over time.

In designs using direct couplings, the elastic elements or cushions within the coupling can wear due to frequent start-stop shocks or misalignment.

III. Mixing and Dispersing Tools

Keywords: Impeller, Dispersing Disc, Surface Treatment

These components come into direct contact with the material and are most susceptible to wear, corrosion, and deformation.

1. Mixing Blades

Blade Edges: Whether twisted, butterfly, or frame-shaped, the edges and surfaces of impeller blades are subject to erosion wear from hard particles in the material (such as ceramic powder and metal powder). This wear alters the blade geometry, directly affecting the equipment's mixing efficiency, shear distribution, and material flow patterns.

Blade Connections: The pins or bolts connecting the impeller to the mixing shaft can suffer fatigue damage or loosening due to the high torque stresses created by ultra-high-viscosity materials.

2. High-Speed ​​Dispersing Disc (if equipped)

In a disperser with high-speed dispersing, the teeth of the dispersing disc are the core of the high-speed shearing process. The high-speed impact and friction of the material can cause the teeth to become blunt, significantly reducing dispersing and refinement efficiency. Depending on the material properties, high-wear-resistant materials or surface hardening should be selected.

IV. Hydraulic and Auxiliary Systems

Keywords: Hydraulic Cylinder, Hydraulic Seals, Pressure Sensors

The hydraulic system used for cylinder lifting and locking also contains vulnerable parts.

Hydraulic Cylinder Seals: The oil seal, dust seal, and guide ring on the hydraulic cylinder piston rod can be damaged by frequent lifting and lowering movements, hydraulic oil quality, and corrosion or scratches on the piston rod, leading to hydraulic oil leakage or unstable lifting.

Pressure Sensors and Temperature Probes: These precision instruments may experience drift in accuracy or damage to the sensor body when exposed to material, high pressure, or high temperature for a long time. They are critical wear parts for ensuring accurate process control.