Diaphragm vs Peristaltic vs Vacuum Ink Pumps Explained
In wide-format printers, photo printers, and UV flatbed printers, the ink pump is an essential component of the ink supply and cleaning system. Different types of ink pumps vary in structure, working principles, application scenarios, and performance. The three most common types are:
1. Diaphragm Pump
Working Principle:
Driven by a motor and connecting rod, the elastic diaphragm moves back and forth, generating negative and positive pressure. With the help of one-way valves, the ink flows in a single direction, achieving a continuous suction and discharge cycle.
2. Peristaltic Pump
Working Principle:
Relies on rollers or pressure blocks to squeeze flexible tubing, causing the liquid inside the tube to flow. The liquid only contacts the tubing and does not directly touch any metal components, making it suitable for scenarios requiring high precision and low shear force.
3. Vacuum Pump
Working Principle:
Removes gas through mechanical or physical means, reducing system pressure and creating a negative pressure environment. It is often used to stabilize ink systems or assist with suction.
Comparison of the Three Ink Pump Types
Comparison Summary
Diaphragm Pump: The most common type of UV printer ink pump, ideal for most ink supply and cleaning scenarios.
Peristaltic Pump: Best for special inks or environments requiring no cross-contamination, with simple maintenance.
Vacuum Pump: Mainly used for negative pressure control and platform suction, ensuring printing stability and precision.