Compact stepper-driven pump assembly for controlled liquid transfer.
The Peristaltic Pump Prototype is a compact mechanical assembly designed for controlled liquid movement through flexible tubing.
The system uses a stepper-driven rotor with bearing rollers to progressively compress a silicone tube along a circular pump track. This allows the liquid to be moved without direct contact between the fluid and the mechanical components of the pump.
The pump body was designed as a compact 3D printed assembly, with a focus on clean mechanical integration, simple assembly and controlled tube compression. The rotor geometry, bearing position and pump track were developed around the selected silicone tubing to achieve a functional pumping mechanism in a small form factor.
This prototype is part of RoghenLab’s work on functional mechanical systems, fluid-handling concepts and compact electromechanical assemblies.
Technical Details
- Stepper-driven rotor
- Three-roller compression system
- Silicone tube: 6 mm OD / 4 mm ID
- 3D printed pump body
- Circular pump track
- Bearing-based roller system
- Compact square body layout
- Designed for electronic speed control integration
Development Focus
The design focuses on the relationship between tube compression, roller position and pump track geometry. The main mechanical challenge was to create enough compression to move fluid while avoiding excessive friction, tube damage or unnecessary load on the motor.
The body geometry was developed to keep the tube guided during rotation while allowing enough lateral space for tube deformation under compression.