The Key Role of Micro Pumps in Circulating Coolant Replenishment
1. Industry Overview
In industrial environments requiring liquid cooling, circulating micro pumps are typically used to drive the flow of coolant through pipelines. However, due to evaporation, leakage, and the need for periodic replenishment of the coolant, a small-flow micro liquid pump is required to supplement the coolant in the cooling loop as needed. For example, in the metal radiator manufacturing industry, a liquid cooling loop is used to test the quality and effectiveness of radiators. This testing loop requires the on-demand addition of refrigerant, and the use of a micro-flow control system for refrigerant addition enables precise, stable, and reliable coolant replenishment.
2. Introduction to Micro Pumps Application
In factories, liquid transportation is achieved using AC circulating micro pumps as the core pressurizing equipment, which can achieve high-pressure, high-flow coolant circulation to drive the coolant through the pipelines. However, these micro pumps are not suitable for coolant replenishment.
In such scenarios, micro vacuum pumps with small flow rates and high heads are more suitable as coolant replenishment pumps. Integrated with on-site equipment processes and controlled by liquid level sensors combined with PLCs or microcontrollers, these micro pumps can promptly start pumping when the coolant level falls below the normal line, ensuring accurate liquid replenishment. The micro vacuum pumps developed by Chengdu Hilin Technology feature fast response, convenient control, and real-time monitoring of operational status, making them particularly suitable for automated control applications that require integration with sensors and microcontrollers for precise micro-liquid replenishment.
3. Project Challenges
Most micro vacuum pumps on the market lack speed adjustment capabilities. Variations in on-site workload pressure lead to significant deviations in flow rates from expected values, making automatic liquid replenishment control difficult.
On-site requirements demand that the pump be self-priming, capable of pumping immediately upon power-on, and able to run dry when no liquid is being pumped.
The pump must be capable of suctioning liquids with a certain level of viscosity.
Factory equipment requires the micro vacuum pump to operate continuously for 24 hours without power interruption, with long life, high stability, and minimal maintenance.
4. Solutions
The S-series micro vacuum pumps developed and produced by Chengdu Hilin Technology offer a small liquid output flow rate, with an adjustable flow range of 0.2 L/min to 3 L/min. By connecting to a PWM signal, the flow rate and pressure at the output end can be adjusted. Additionally, the pumps feature a speed feedback signal function, making them more suitable for practical on-site applications.
The S-series micro vacuum pumps are dual-purpose, capable of functioning as both liquid pumps and vacuum pumps. They can run dry and are self-priming, eliminating the need to add priming water to the pump chamber before startup. They can directly self-prime to create a vacuum and then suction the liquid.
The S-series micro vacuum pumps can directly run dry to create a vacuum, reducing the container to a certain negative pressure before suctioning liquids with a certain level of viscosity.
The S-series micro vacuum pumps feature low power consumption and compact size. The high-quality version can operate continuously for 24 hours without interruption, with a service life of over 6,000 hours as a water pump and over 10,000 hours as a vacuum pump. Powered by DC 24V or DC 12V, they offer stable and reliable long-term operation with minimal maintenance.
